阅读说明：本技术 滤膜及滤膜应用方法 (Filter membrane and filter membrane application method ) 是由 贺石中 石新发 覃楚东 李秋秋 赵畅畅 何伟楚 冯伟 钟龙风 杨智宏 许少凡 关 于 2021-09-10 设计创作，主要内容包括：本申请实施例提供一种滤膜及滤膜应用方法,应用于磨损颗粒的铁谱分析和电镜能谱分析,滤膜具有一承载面,用于承载磨损颗粒；承载面上设有第一方向标记,第一方向标记用于与电镜载物台上的第二方向标记相对应；承载面上设有一个或多个标记圈,标记圈用于与电镜载物台的钉台相对应,部分磨损颗粒位于标记圈中。上述的滤膜及滤膜应用方法,在进行铁谱分析与电镜能谱分析时,使得两次观测时滤膜摆放的方向和位置相同,保证了铁谱分析与电镜能谱分析中的视场完全一致；由于滤膜的承载面上设置了标记圈,部分磨损颗粒位于标记圈中,这样通过锁定标记圈,可以准确获取磨损颗粒或磨粒区域在滤膜上的位置信息,可以快速定位特定的磨损颗粒或磨粒区域。(The embodiment of the application provides a filter membrane and an application method of the filter membrane, which are applied to ferrography analysis and electron microscope energy spectrum analysis of wear particles, wherein the filter membrane is provided with a bearing surface for bearing the wear particles; a first direction mark is arranged on the bearing surface and is used for corresponding to a second direction mark on the electron microscope objective table; one or more marking rings are arranged on the bearing surface, the marking rings are used for corresponding to a nail table of the electron microscope objective table, and part of wear particles are positioned in the marking rings. According to the filter membrane and the filter membrane application method, when ferrography and electron microscope energy spectrum analysis are carried out, the placing directions and the placing positions of the filter membranes are the same during two times of observation, and the fact that the fields of view in the ferrography and the electron microscope energy spectrum analysis are completely consistent is guaranteed; because the bearing surface of the filter membrane is provided with the mark ring, and part of the wear particles are positioned in the mark ring, the position information of the wear particles or the abrasive particle area on the filter membrane can be accurately acquired by locking the mark ring, and the specific wear particles or the abrasive particle area can be quickly positioned.)

1. A filter membrane is applied to the ferrographic analysis and electron microscope energy spectrum analysis of wear particles and is characterized in that,

the filter membrane is provided with a bearing surface for bearing abrasion particles;

a first direction mark is arranged on the bearing surface and is used for corresponding to a second direction mark on the electron microscope objective table;

one or more marking rings are arranged on the bearing surface and used for corresponding to a nail table of an electron microscope objective table, and partial abrasion particles are positioned in the marking rings.

2. The filter membrane according to claim 1, characterised in that it is circular in shape, having a diameter of a first predetermined diameter adapted to the diameter of an electron microscope stage.

3. The filter membrane according to claim 1, characterised in that said marker circle is circular in shape, said marker circle having a second predetermined diameter adapted to fit the diameter of the nail table of an electron microscope stage.

4. The filter membrane of claim 1 in which the number of marker rings is plural, one of the marker rings being located at the center of the support surface and the other marker rings being spaced apart from the edge of the support surface and surrounding the marker ring at the center of the support surface.

5. The filter membrane according to claim 1, characterised in that said number of marker rings is one, said marker rings being located in the centre of said support surface.

6. The filter membrane according to claim 1, characterised in that the filtration pores of said filter membrane have a pore size lower than or equal to 10 μm.

7. The filter membrane according to claim 6, characterised in that the pore size of said filtration pores is less than or equal to 2 μm.

8. The filter membrane of claim 1 in which the first direction indicia and the indicia circles are printed on the support surface, the printing ink of the first direction indicia and the indicia circles comprising liquid sulfur black.

9. The filter membrane according to claim 1, characterised in that it is a conductive membrane.

10. The filter membrane according to claim 9, characterised in that it is a non-metallic conductive membrane.

11. The filter membrane of claim 10, in which said filter membrane is of non-metallic conductive fibrous material, said filter membrane comprising one of carbon black-based conductive fibers and conductive polymeric fibers.

12. A method of filter membrane application, using a filter membrane according to any one of claims 1 to 11, comprising the steps of:

preparing an abrasive particle spectrum sheet, wherein the abrasive particle spectrum sheet comprises a filter membrane and abrasive particles on the filter membrane;

drying the abrasive grain spectrum sheet;

placing the abrasive particle spectrum plate under a microscope, then carrying out first observation and analysis on the wear particles on the spectrum plate, and determining the placing direction of the first direction mark of the filter membrane at the moment;

determining a specific position on the abrasive particle spectrum sheet according to the mark ring of the filter membrane;

the abrasive particle spectrum piece is placed on an electron microscope objective table, a first direction mark of the filter membrane corresponds to a second direction mark of the electron microscope objective table, the placing direction of the first direction mark is the same as that of the first direction mark in the first observation, and electron microscope micro-morphology analysis and energy spectrum element content detection are carried out on the wear particles in the target area according to the mark ring.

Technical Field

The application relates to the technical field of ferrography and electron microscope energy spectrum analysis, in particular to a filter membrane and a filter membrane application method.

Background

The oil monitoring technology is a technology for 'blood drawing and physical examination' of mechanical equipment, and can acquire oil information and wear information of the mechanical equipment by detecting indexes of the equipment in the aspects of physical and chemical properties, pollution and wear of lubricating oil, so that the overall running state of the equipment is reflected. In order to judge the wear degree and wear parts of mechanical equipment and avoid serious wear and shutdown failure of the equipment, the technical means adopted is to perform ferrographic analysis on the lubricating oil used by the equipment through a microscope and perform electron microscope energy spectrum analysis on specific abrasive particles.

The ferrographic analysis is the most critical detection item for reflecting equipment wear in the oil monitoring technology, and the main technical principle is that the worn metal particles in lubricating oil are separated and prepared into a spectrum sheet in a magnetic field or filtering mode, and then the information such as the concentration, the size, the form, the material and the like of the worn metal particles on the spectrum sheet is observed under a microscope, so that the wear condition of the equipment is comprehensively evaluated.

The method comprises the steps of carrying out electron microscope energy spectrum analysis on abrasive particles in oil, randomly adhering the abraded metal particles separated from a ferrography spectrum plate on a nail table pasted with conductive adhesive, and then putting the nail table into an electron microscope energy spectrum instrument to carry out detection and analysis on the particles, so that the high-resolution surface micro-morphology of the particles and the specific element content of the particles can be obtained.

The wear degree and the wear part of the mechanical equipment can be diagnosed by combining the wear metal particle information observed in the ferrographic microscope with the wear metal particle morphology and component information detected in the electron microscope energy spectrum analysis.

In the prior art, the abrasion degree and the abrasion part of equipment can be diagnosed by combining ferrography analysis and electron microscope energy spectrum analysis, but the following two main problems still exist in the actual analysis process.

First, in both ferrography and electron microscopy spectroscopy, the fields of view of the two cannot be kept consistent and it is difficult to lock specific wear metal particles. In the process of ferrography analysis, a microscope is mainly used for observing and photographing a spectral slice, so that the microscopic morphology information and the color picture of the worn metal particles are obtained. After microscopic observation of ferrography spectrum plate, if high-magnification microscopic morphology analysis or element component analysis needs to be carried out on a certain particle or a particle in a certain area, electron microscope energy spectrum detection analysis needs to be carried out on the particle. In the prior art, a conductive adhesive special for an electron microscope is used for adhering particles on a spectrum sheet for ferrography analysis, and then the particles are placed into an electron microscope spectrometer for detection. Such an operation is difficult to accurately lock a specific particle or a particle in a certain area, and it cannot be guaranteed that the particle does not fall off in the process of adhering the conductive adhesive, and it cannot be guaranteed that the whole field of view of the particle in the certain area does not change position.

Secondly, the spectral slice in ferrography is not conductive, can not be directly put into an electron microscope energy spectrometer for detection, and needs secondary sample preparation when the electron microscope energy spectrometer is used for detection. The existing spectrum plate for ferrography mainly comprises a glass substrate and a microporous filter membrane, and the two types of spectrum plates cannot be directly used for electron microscope energy spectrum detection because the two types of spectrum plates are not conductive. Experiments prove that the actual conductive effect is still poor and the requirements of electron microscope shooting and energy spectrum detection cannot be met by carrying out gold spraying treatment on the glass spectrum sheet and the filter membrane spectrum sheet before the glass spectrum sheet and the filter membrane spectrum sheet are placed into an electron microscope energy spectrum instrument.

Disclosure of Invention

The embodiment of the application aims to provide a filter membrane and a filter membrane application method, and aims to solve the problems that the visual fields of ferrography and electron microscope energy spectrum analysis cannot be kept consistent and specific worn metal particles are difficult to lock when the existing ferrography and electron microscope energy spectrum analysis are combined to diagnose the wear degree and the wear part of equipment.

The embodiment of the application provides a filter membrane which is applied to the ferrographic analysis and electron microscope energy spectrum analysis of wear particles,

the filter membrane is provided with a bearing surface for bearing abrasion particles;

a first direction mark is arranged on the bearing surface and is used for corresponding to a second direction mark on the electron microscope objective table;

one or more marking rings are arranged on the bearing surface and used for corresponding to a nail table of an electron microscope objective table, and partial abrasion particles are positioned in the marking rings.

The filter membrane is used for filtering wear particles of equipment using lubricating oil to manufacture a spectrum sheet, and the bearing surface of the filter membrane is provided with the first direction mark, so that when the filter membrane is placed in ferrography analysis, the first direction mark enables the filter membrane to have a placing direction, such as pointing to the north-south direction; because the bearing surface of the filter membrane is provided with the mark rings, part of the wear particles are positioned in the mark rings, and thus, the position information of some wear particles or abrasive particle areas on the filter membrane can be accurately acquired by locking a certain mark ring or a plurality of mark rings, that is, the position information of the wear particles of a certain mark ring or a plurality of mark rings can be acquired, that is, the specific wear particles or abrasive particle areas can be quickly positioned, and the positioning can be realized more quickly by matching the first direction mark with the mark rings.

In one embodiment, the filter membrane is circular, and the diameter of the filter membrane is a first preset diameter, and the first preset diameter is used for being matched with the diameter of the electron microscope stage.

In one embodiment, the mark ring is circular, and the diameter of the mark ring is a second preset diameter which is used for being matched with the diameter of a nail table of an electron microscope objective table.

In one embodiment, the number of the mark rings is multiple, one of the mark rings is located in the center of the bearing surface, and the other mark rings are distributed at intervals on the edge of the bearing surface and surround the mark ring located in the center of the bearing surface.

In one embodiment, the number of the marking rings is one, and the marking rings are positioned in the center of the bearing surface.

In one embodiment, the filter pores of the filter membrane have a pore size of less than or equal to 10 μm.

In one embodiment, the pore size of the filtration pores is less than or equal to 2 μm.

In one embodiment, the first direction mark and the mark ring are printed on the carrying surface, and the printing ink of the first direction mark and the mark ring comprises liquid sulfur black.

In one embodiment, the filter membrane is a conductive membrane.

In one embodiment, the filter membrane is a non-metallic conductive membrane.

In one embodiment, the filter membrane is made of a non-metallic conductive fiber material, and the filter membrane comprises one of carbon black conductive fibers and conductive polymer fibers.

A method of filter membrane application using a filter membrane according to any of the preceding embodiments, the method comprising the steps of:

preparing an abrasive particle spectrum sheet, wherein the abrasive particle spectrum sheet comprises a filter membrane and abrasive particles on the filter membrane;

drying the abrasive grain spectrum sheet;

placing the abrasive particle spectrum plate under a microscope, then carrying out first observation and analysis on the wear particles on the spectrum plate, and determining the placing direction of the first direction mark of the filter membrane at the moment;

determining a specific position on the abrasive particle spectrum sheet according to the mark ring of the filter membrane;

the abrasive particle spectrum piece is placed on an electron microscope objective table, a first direction mark of the filter membrane corresponds to a second direction mark of the electron microscope objective table, the placing direction of the first direction mark is the same as that of the first direction mark in the first observation, and electron microscope micro-morphology analysis and energy spectrum element content detection are carried out on the wear particles in the target area according to the mark ring.

According to the filter membrane application method, the filter membrane is used for filtering wear particles of lubricating oil used in equipment to manufacture a spectrum sheet, and the bearing surface of the filter membrane is provided with the first direction mark, so that when the filter membrane is placed in ferrography analysis, the first direction mark enables the filter membrane to have a placing direction, such as pointing to the north-south direction, and when the filter membrane is placed in the electron microscope energy spectrum analysis, the first direction mark is aligned with the second direction mark of the electron microscope objective table, such as the first direction mark is the same as the position of the push notch of the electron microscope objective table, so that the first direction mark points to the north-south direction, the placing directions and the positions of the filter membrane in two-time observation are the same, and the complete consistency of the viewing fields in the ferrography analysis and the electron microscope energy spectrum analysis is ensured; because the bearing surface of the filter membrane is provided with the mark ring, part of the wear particles are positioned in the mark ring, the position information of certain wear particles or abrasive particle areas on the filter membrane can be accurately obtained by locking a certain mark ring or a plurality of mark rings, the position information of the wear particles of the certain mark ring or the plurality of mark rings can be obtained, the specific wear particles or abrasive particle areas can be quickly positioned, the positioning can be quickly realized by matching the first direction mark with the mark ring, and the wear particles in the specific area are subjected to electron microscope micro-morphology analysis and energy spectrum element content detection.

Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic diagram of the structure of a filter membrane provided in an embodiment of the present application;

FIG. 2 is a schematic flow chart of a method for applying a filter membrane according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

In one embodiment, the filter membrane is applied to ferrography and electron microscope energy spectrum analysis of wear particles, and is provided with a bearing surface for bearing the wear particles; a first direction mark is arranged on the bearing surface and is used for corresponding to a second direction mark on the electron microscope objective table; one or more marking rings are arranged on the bearing surface and used for corresponding to a nail table of an electron microscope objective table, and partial abrasion particles are positioned in the marking rings.

As shown in fig. 1, a filter membrane 10 of an embodiment is applied to ferrography and electron microscopy spectroscopy analysis of wear particles, the filter membrane 10 has a bearing surface 100 for bearing wear particles, such as wear metal particles in equipment lubricating oil; a first direction mark 110 is arranged on the bearing surface 100, and the first direction mark 110 is used for corresponding to a second direction mark on an electron microscope objective table; one or more mark rings 120 are arranged on the bearing surface 100, the mark rings 120 are used for corresponding to a nail table of an electron microscope objective table, and part of wear particles are located in the mark rings 120. In this embodiment, the filter 10 is used for being placed on a stage of an electron microscope, the first direction mark 110 is used for being vertically opposite to a second direction mark of the stage of the electron microscope, and the first direction mark 110 and the second direction mark are in the same direction. In one embodiment, the second direction of the electron microscope stage is marked as the position of the electron microscope stage at the push-in notch.

The filter membrane 10 is used for filtering wear particles of lubricating oil used in equipment to prepare a spectrum sheet, and the bearing surface 100 of the filter membrane 10 is provided with the first direction mark, so that when the filter membrane 10 is placed in ferrography analysis, the first direction mark 110 enables the filter membrane 10 to have a placing direction, for example, the filter membrane points to the north and south, when the filter membrane 10 is placed in the electron microscope energy spectrum analysis, the first direction mark 110 is aligned with the second direction mark of the electron microscope objective table, for example, the first direction mark 110 is the same as the position of the notch pushed into the electron microscope objective table, so that the first direction mark 110 points to the north and south, the placing directions and the positions of the filter membrane 10 are the same in two times of observation, and the viewing fields in the ferrography analysis and the electron microscope energy spectrum analysis are completely consistent; because the bearing surface 100 of the filter membrane 10 is provided with the mark ring 120, and part of the wear particles are located in the mark ring 120, the position information of some wear particles or abrasive particle areas on the filter membrane 10 can be accurately obtained by locking a certain mark ring 120 or a certain number of mark rings 120, that is, the position information of the wear particles of a certain mark ring 120 or a certain number of mark rings 120 can be obtained, that is, a specific wear particle or abrasive particle area, that is, an area where the wear particles are located, can be quickly positioned by matching the first direction mark 110 with the mark ring 120.

In one embodiment, the first direction mark 110 is located at the edge of the carrying surface 100, so as to correspond to the position of the push-in notch of the electron microscope stage. In one embodiment, the first direction mark 110 is a mark line, and the same arrangement direction and position of the filter membrane 10 in the observation chamber can be quickly and accurately achieved by positioning the mark line. In one embodiment, the first direction indicia 110 is formed by printing a line on the carrying surface 100.

In one embodiment, the filter membrane 10 is circular, the diameter of the filter membrane 10 is a first predetermined diameter, the first predetermined diameter is used for matching with the diameter of the electron microscope stage, and since the upper surface of the standard electron microscope stage is circular, the filter membrane 10 is circular, so as to be matched with the electron microscope stage, and the diameter of the filter membrane 10 is also matched with the electron microscope stage. In one embodiment, the diameter of the filter membrane 10 isIn one embodiment, the diameter of the filter membrane 10 isThe diameters of the standard electron microscope object stages are mostly concentratedThe diameter of the filter membrane 10 is thus set toAnd the size of the filter membrane 10 is better matched with that of an electron microscope objective table, so that the applicability of the filter membrane is improved. In one embodiment, the diameter of the filter membrane 10 isTypical dimensions for the filter membrane 10.

In one embodiment, the marker ring 120 is circular, the diameter of the marker ring 120 is a second predetermined diameter, the second predetermined diameter is used for matching with the diameter of the nail stage of the electron microscope stage, because the upper surface of the nail stage of the standard electron microscope objective table is round, the shape of the marking ring 120 is round, which is convenient for matching with the nail stage, the diameter is also matched with the nail stage, which is convenient for aligning the marking ring 120 with the nail stage, the position, the shape and the size of the marking ring 120 are respectively matched with the nail stage, in this embodiment, the second predetermined diameter is of the same size as the diameter of the staple table, thus enabling observation of the abrasive particles at the staple table position of the standard stage, therefore, the position of the specific abrasive particles on the filter membrane 10 can be quickly positioned in the electron microscope control software, and the position information of the specific abrasive particles on the filter membrane 10 can be accurately acquired, so that the specific abrasive particles or the abrasive particle area can be quickly positioned and locked. In one embodiment, the diameter of the marker ring 120 isIn one embodiment, the diameter of the marker ring 120 isThe diameters of the nail stages of the standard electron microscope object stages are mostly concentratedThe diameter of the filter membrane 10 is thus set toThe nail table is well matched with the size of the nail table, and accurate positioning is facilitated. In one embodiment, the diameter of the filter membrane 10 is

In one embodiment, the number of the marker circles 120 is multiple, one of themThe marker rings 120 are located at the center of the bearing surface 100, and other marker rings 120 are spaced around the edge of the bearing surface 100 and surround the marker rings 120 located at the center of the bearing surface 100. When the objective table of electron microscope has a plurality of nail platforms, and filter membrane 10 size and electron microscope objective table adaptation, can set up a plurality of mark circle 120 on the filter membrane 10 and correspond with a plurality of nail platforms, can fix a position mark circle 120 fast through the nail platform position like this to fix a position grit or grit region fast. In one embodiment, the number of the marker rings 120 is 9, wherein 1 is located at the center of the bearing surface 100, and the other 8 are located at the edge of the bearing surface 100 and surround the marker ring 120 located at the center, since the number of the standard stage is 9, and the number of the marker rings 120 is set to be equal to the number of the standard stage, the rapid positioning of the abrasive particles or the abrasive particle area can be more accurately and sufficiently realized, in this embodiment, the diameter of the filter membrane 10 is a typical size, that is, the diameter is the diameter of the filter membrane 10

In other embodiments, the diameter of the filter membrane 10 is not a typical dimension, and the number of the marker rings 120 on the filter membrane 10 can be increased or decreased appropriately, and the marker rings 120 are distributed on the filter membrane 10 to ensure uniform arrangement and non-intersection, so as to ensure that the marker rings are uniformly arranged around the outer circle, i.e. the edge, of the bearing surface 100 of the filter membrane 10 and then arranged at the center of the bearing surface 100 of the filter membrane 10. In one embodiment, when the diameter of the filter membrane 10 is reduced to 20mm or less, the number of the position mark circles 120 on the filter membrane 10 is 1, and only arranged at the center of the bearing surface 100 of the filter membrane 10.

In one embodiment, the number of the marker rings 120 is one, the marker rings 120 are located in the center of the support surface 100, and the filter membrane 10 is smaller relative to the stage size, and the marker rings 120 occupy a larger area of the support surface 100, so that it is sufficient to provide one marker ring 120 on the support surface 100, preferably in the center.

In one embodiment, the filter pores of the filter membrane 10 have a pore size of less than or equal to 10 μm. The sizes of the wear metal particles are mostly concentrated between 10 mu m and 100 mu m, although the sizes of partial abrasive particles are smaller than 10 mu m or larger than 100 mu m, the abrasive particles are generally called abnormal wear particles when the sizes of partial abrasive particles are larger than 10 mu m, and the abnormal wear particles have larger value in fault diagnosis and analysis; the pore size of the filter membrane 10 should therefore be 10 μm or less to allow the separation of the abnormally worn metal particles in the lubricating oil.

In one embodiment, the pore size of the filter pores is less than or equal to 2 μm, so that the pore size of the filter pores is controlled to a sufficiently small level to avoid loss of information of wear metal particles in the oil.

In one embodiment, the viscosity of the oil determines how easy and long the filtration time is, and the lower the viscosity, the easier the oil is to be filtered. Typical filter membrane 10 pore sizes can be selected to be 0.45 μm, 0.8 μm, 1.2 μm depending on the viscosity of the oil in use.

In one embodiment, the first direction mark 110 and the mark ring 120 are printed on the bearing surface 100, the printing ink of the first direction mark 110 and the mark ring 120 includes liquid sulfur black, and during the preparation of a spectral slice for ferrography analysis, due to the high viscosity of some oil products, the oil products generally need to be diluted by using dissolved gasoline, so that the lubricating oil can be smoothly filtered, the wear metal particles in the oil can be smoothly separated and deposited on the filter membrane 10, and thus the printing ink for printing the first direction mark 110 selects the liquid sulfur black, and cannot be dissolved in the lubricating oil and the gasoline, so that the first direction mark 110 is stored on the filter membrane 10, and similarly, the mark ring 120 is also stored on the filter membrane 10. In one embodiment, the printing ink of the first direction mark 110 and the mark ring 120 may be other printing ink insoluble in lubricating oil and gasoline.

In one embodiment, the filter membrane 10 is a conductive film, and the filter membrane 10 is a conductive film, so that the spectral slice made of the filter membrane 10 can be conductive and can be directly placed into an electron microscope spectrometer for detection, and secondary sample preparation is not needed during electron microscope spectrum detection, that is, a detection sample does not need to be made again for electron microscope spectrum detection; compared with the traditional gold spraying treatment of a glass spectrum plate and a filter membrane 10 spectrum plate, the conductive effect is good, and the requirements of electron microscope shooting and energy spectrum detection can be met.

In one embodiment, the filter membrane 10 is a non-metallic conductive membrane, and since the wear metal particles are separated from the friction pair of the mechanical device, the material of the filter membrane 10 is generally metallic, and the filter membrane 10 is prepared by using a non-metallic material, the interference of elements in the material of the filter membrane 10 on the element content of the wear metal particles can be avoided in the electron microscope energy spectrum detection process. In one embodiment, the filter membrane 10 is made of a non-metallic conductive fiber material, and the filter membrane 10 includes one of a carbon black conductive fiber and a conductive polymer fiber.

A method of filter membrane application using a filter membrane according to any of the preceding embodiments, the method comprising the steps of: preparing an abrasive particle spectrum sheet, wherein the abrasive particle spectrum sheet comprises a filter membrane and abrasive particles on the filter membrane; drying the abrasive grain spectrum sheet; placing the abrasive particle spectrum plate under a microscope, then carrying out first observation and analysis on the wear particles on the spectrum plate, and determining the placing direction of the first direction mark of the filter membrane at the moment; determining a specific position on the abrasive particle spectrum sheet according to the mark ring of the filter membrane; the abrasive particle spectrum piece is placed on an electron microscope objective table, a first direction mark of the filter membrane corresponds to a second direction mark of the electron microscope objective table, the placing direction of the first direction mark is the same as that of the first direction mark in the first observation, and electron microscope micro-morphology analysis and energy spectrum element content detection are carried out on the wear particles in the target area according to the mark ring.

As shown in fig. 2, a method for applying a filter membrane is implemented by using the filter membrane described in any one of the above embodiments, and the method for applying the filter membrane comprises the following steps:

210. and preparing an abrasive particle spectrum sheet, wherein the abrasive particle spectrum sheet comprises a filter membrane and abrasive particles on the filter membrane. In one embodiment, the filtration is performed using a filtration apparatus corresponding to the filter membrane 10 to produce an abrasive spectral patch comprising abraded particles and said filter membrane. In one embodiment, filtration is performed using a funnel and vacuum pump corresponding to the diameter of the filter membrane 10.

220. And drying the abrasive grain spectrum piece. Used to volatilize the abrasion particles and the oil and solvent on the filter membrane. In one embodiment, the abrasive grain spectrum sheet is placed in a vacuum drying oven for drying, so that the abrasive grains and the in-use oil (lubricating oil) and the solvent (solvent gasoline) on the filter membrane 10 can be fully volatilized, and the vacuum environment can avoid oxidation of the abrasive grains as much as possible, thereby avoiding influencing the use of an electron microscope instrument and the result of energy spectrum detection.

230. The abrasive grain spectral slice is placed under a microscope, and then the first observation and analysis are carried out on the abrasive grains on the spectral slice, and the placing direction of the first direction mark 110 of the filter membrane 10 at the moment is determined.

240. The specific location on the spectral slice of the abrasive particles is determined from the marker circles 120 of the filter membrane 10. In one embodiment, during microscopic observation of ferrography, a specific area is microscopically photographed to obtain a color picture of the abrasive grain, and then the position is determined and recorded by the mark circle 120 of the area.

250. The abrasive particle spectrum sheet is placed on an electron microscope objective table, the first direction mark 110 of the filter membrane 10 corresponds to the second direction mark of the electron microscope objective table, the placing direction of the first direction mark 110 is the same as that of the first direction mark in the first observation, and electron microscope micro-morphology analysis and energy spectrum element content detection are carried out on the wear particles in the target area according to the mark ring 120.

In the filter membrane application method, the filter membrane is used for filtering wear particles of lubricating oil used in equipment to prepare a spectrum sheet, and the bearing surface 100 of the filter membrane 10 is provided with the first direction mark, so that when the filter membrane 10 is placed in ferrography analysis, the first direction mark 110 enables the filter membrane 10 to have a placing direction, such as pointing to the north-south direction, and when the filter membrane 10 is placed in electron microscope energy spectrum analysis, the first direction mark 110 is aligned with the second direction mark of an electron microscope objective table, such as the first direction mark 110 is the same as the position of the notch pushed into the electron microscope objective table, so that the first direction mark 110 points to the north-south direction, and thus the placing directions and the positions of the filter membrane 10 are the same in two times of observation, and the complete consistency of the fields of ferrography analysis and electron microscope energy spectrum analysis is ensured; because the bearing surface 100 of the filter membrane 10 is provided with the mark ring 120, and part of the wear particles are located in the mark ring 120, the position information of some wear particles or abrasive particle areas on the filter membrane 10 can be accurately obtained by locking a certain mark ring 120 or a plurality of mark rings 120, that is, the position information of the wear particles of a certain mark ring 120 or a plurality of mark rings 120 can be obtained, that is, specific wear particles or abrasive particle areas can be quickly positioned, that is, the abrasive particle areas are the areas where the wear particles are located, and the first direction mark 110 and the mark ring 120 are matched to realize positioning more quickly, so that the wear particles in the specific areas are subjected to electron microscope microscopic morphology analysis and energy spectrum element content detection.

In all embodiments of the present application, the terms "large" and "small" are relatively speaking, and the terms "upper" and "lower" are relatively speaking, so that descriptions of these relative terms are not repeated herein.

It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present application," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in this embodiment," "in the examples of the present application," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.

In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.