阅读说明：本技术 一种纯铜压铸设备及工艺 (Pure copper die-casting equipment and process ) 是由 王伟铭 陈荣才 于 2021-09-06 设计创作，主要内容包括：本发明提供了一种纯铜压铸设备以及压铸工艺；所述压铸设备包括磁场仪、X射线探射装置、移动模块以及控制系统；所述磁场仪以及所述X射线探射装置安装于所述移动模块上,并通过所述移动模块的驱动,移动到模具的指定位置进行检测；所述磁场仪在压铸模具内部产生标准测量磁场,通过测量穿过模具的磁场数值判断模具是否有超过阈值的变化或变化率的位置,从而判断模具内部是否出现缺陷的可能性；所述磁场仪报告可能存在缺陷的位置到所述控制系统；所述X射线探射装置对可能存在缺陷的位置进行X射线探测,并提供探测后的影像报告。本发明适用于自动化连续压铸生产线,在提高压铸生产效率的同时,保证压铸模具以及产品的生产质量。(The invention provides pure copper die-casting equipment and a die-casting process; the die casting equipment comprises a magnetic field instrument, an X-ray detection device, a mobile module and a control system; the magnetic field instrument and the X-ray detection device are arranged on the moving module and are driven by the moving module to move to the specified position of the die for detection; the magnetic field instrument generates a standard measuring magnetic field in the die-casting die, and whether the die has a position with change or change rate exceeding a threshold value is judged by measuring the value of the magnetic field passing through the die, so that the possibility of whether defects occur in the die is judged; the magnetometer reports the location of possible defects to the control system; the X-ray detection device detects X-rays at the position where the defect possibly exists and provides a detected image report. The invention is suitable for an automatic continuous die-casting production line, improves the die-casting production efficiency and ensures the production quality of die-casting dies and products.)

1. A pure copper die casting device comprises a magnetic field instrument, an X-ray detection device, a moving module and a control system; the magnetic field instrument and the X-ray detection device are arranged on the moving module and are driven by the moving module to move to the specified position of the die for detection; the magnetic field instrument generates a standard measuring magnetic field in the die-casting die, and whether the die has a position with change or change rate exceeding a threshold value is judged by measuring the value of the magnetic field passing through the die, so that the possibility of whether defects occur in the die is judged; the magnetometer reports the location of possible defects to the control system; the control system controls the moving module to operate, and the X-ray detection device is moved to a position where a defect possibly exists; the X-ray detection device detects X-rays at positions where defects possibly exist and provides an image report after detection;

wherein the mobile module comprises a mounting plate; the mounting plate is used for fixing the magnetic field instrument and the X-ray detection device on the mobile module; the moving module further comprises a screw rod and a moving track; the moving track is matched with the guide block on the back surface of the mounting plate, so that the mounting plate only has one degree of freedom of moving along a first direction; the screw rod is matched with a thread block positioned on the back surface of the mounting plate; the screw rod is driven to rotate, so that the thread block generates displacement along a first direction, and the mounting plate is further linked to move along the first direction; the magnetometer moves with the mounting plate, scans the die for a magnetic field in a first direction and records the values collected, and generates a data set of < position-value > stored in the control system.

2. The pure copper die casting apparatus according to claim 1, wherein said moving module further comprises a driving part; the driving component is used for driving and controlling the rotating direction and the rotating speed of the screw rod.

3. The pure copper die casting apparatus according to claim 3, wherein said moving module further comprises a distance holder; the first end of the distance bracket is arranged on the mounting plate; the second end of the distance bracket is contacted with the measured mould; the distance support comprises a telescopic mechanism and is used for adjusting the distance between the mounting plate and the measured die.

4. The pure copper die casting equipment according to claim 4, wherein the magnetic field instrument is a passive magnetic flaw detection device; the magnetic field instrument comprises a probe array formed by a plurality of sensing probes and is arranged along a second direction perpendicular to the first direction; the distribution positions of the plurality of sensing probes are adjusted by the magnetic field instrument through the adjusting mechanism, so that the detection range of the magnetic field instrument covers the maximum length of the tested die in the second direction.

5. The pure copper die casting device according to claim 5, wherein the X-ray detector comprises a radiation source mounted on the mounting plate at one side of the die and a radiation detector at the other side of the die; the X-ray detection device also comprises at least one group of shielding cases which are used for shielding and protecting the X-ray in the detection process.

6. The pure copper die casting device according to claim 6, wherein the moving module further comprises a safety light grating module; the safety grating module is used for detecting whether foreign matters or personnel stay at the periphery of the tested die.

7. Pure copper die casting plant according to claim 7, characterized in that the moving module further comprises a light and sound warning system for warning possible radiation hazard areas with light and sound during operation of the X-ray detection device.

8. The pure copper die casting apparatus according to claim 8, wherein a die casting process of said die casting apparatus is adopted; the die casting process comprises the following steps:

s1: carrying out standard quality inspection preparation on production elements related to die-casting production to ensure that equipment, dies and materials related to the production are in qualified production states;

s2: performing standard die-casting production at least once in a qualified production state, and performing magnetic field scanning at least once by using the magnetic field instrument at the T moment of the injection heat-preservation forming stage of the die-casting process, and confirming the magnetic field value in a die containing a casting in the standard die-casting production flow; determining a set of standard measurement values < position-value > for use as a threshold for abnormality judgment in normal production by the above-mentioned magnetic field inspection;

s3: in the subsequent conventional die-casting production, at the same T moment after each round of die-casting is finished, the die-casting equipment performs magnetic field scanning on the die and the internal semi-finished product and compares the magnetic field scanning with a standard measurement value set;

s4: if the abnormal position exists, the control system records the position coordinate, controls the X-ray detection device to carry out radioactive inspection on the abnormal position, and stores the inspection record into the control system.

Technical Field

The invention relates to the technical field of die casting processes. In particular to pure copper die casting equipment and a pure copper die casting process.

Background

Die casting, also known as high pressure casting, is a near net shape technology that has been widely used in recent years in the automotive, aerospace, and electronics industries. In die casting, molten metal (typically a light alloy) fills the cavity at high pressure and speed under the action of a punch and rapidly cools to form the final casting. Compared with the common casting process, the die casting process has the characteristics of high speed and high pressure. The products produced are typically light alloy thin-walled parts. However, die casting techniques are also used to produce pure copper rotors, unlike aluminum and magnesium alloys. The melting point of pure copper is about 850-900 ℃, so that the short service life of the die in the pure copper die casting process is a big problem. In the existing die casting process and die production process, the requirement on the red hardness of a die material for die casting pure copper is high, the hardness requirement is above HRC50, otherwise the die is easy to soften, crack and even crack after high-temperature die casting.

At present, automatic continuous production equipment is gradually popularized along with the development of related technical fields, however, the dilemma that the full-scale automatic production is difficult to develop still exists in some special production projects; for example, the die-casting production process is adopted for copper products, which is a production mode with high efficiency and extremely high production efficiency, and the equipment conversion from semi-automation to automation production does not need to be changed greatly; however, for pure copper products, due to the high melting point temperature, the surface quality and dimensional tolerance of the die are difficult to guarantee for a long time by common die steel materials; and using higher strength die steel materials such as: 8433 die steel, YXR33 high-speed die steel, Y4 die steel and other high-hardness steel can effectively prolong the service life of the die, but inevitably faces the problem of high loss rate of the die working under high load, thereby greatly improving the production cost; at the same time, the high loss of the mold also means a higher frequency of inspection and maintenance of the mold during production;

in the conventional inspection of the die, a quality inspector can firstly perform detail inspection on the surface quality and the size of a die-cast product and determine a low difference value with a product diagram; in the process, a quality inspector needs to perform detection steps of measuring, searching for a standard value, calculating differences and even more, and finally determines whether one position is abnormal or not; furthermore, quality testing personnel calculate the abnormal position of the die according to the abnormal position of the product; and for the abnormity of the working surface of the die, quality testing personnel are required to repeatedly carry out the detection steps of measuring, searching for a standard value and calculating the difference; for the quality inspection of the die with low die casting temperature and low tolerance requirement of the finished product, the inspection period is short, the loss rate of the die is relatively low, and the cost of the produced production time is low; however, as mentioned above, the production of pure copper requires a higher requirement for the mold, and requires a shorter inspection period, so that the conventional inspection process results in higher production cost.

Referring to the related disclosed technical solutions, the patent document with publication number JP2021065911A proposes a method of applying laser simultaneously to nickel alloy powder, so that the copper casting is easier to peel off from the die, thereby improving the efficiency of automatic continuous die casting production; patent document CN213080014(U) proposes a centrifugal casting method to improve the uniformity of copper castings in the mold, thereby improving the quality of the copper castings. However, in the existing scheme, after the casting is demoulded, whether the casting or the die has abnormal quality in the casting process can be found, and the production detection efficiency of the casting or the die needs to be improved.

Disclosure of Invention

The invention aims to provide pure copper die-casting equipment and a pure copper die-casting process; the die casting equipment adopts a flaw detection device of a magnetometer type, magnetic detection description is carried out on a die and a finished product before demolding after each die casting process is completed, a scanning result is compared with a numerical value of standard die casting production, the yield point of the die and the change trend of multiple secondary postnatals are confirmed, the possible damage point of the die is timely found in continuous automatic production, and the production efficiency and the product quality of the continuous production flow are ensured.

The invention adopts the following technical scheme: a pure copper die casting device comprises a magnetic field instrument, an X-ray detection device, a moving module and a control system; the magnetic field instrument and the X-ray detection device are arranged on the moving module and are driven by the moving module to move to the specified position of the die for detection; the magnetic field instrument generates a standard measuring magnetic field in the die-casting die, and whether the die has a position with change or change rate exceeding a threshold value is judged by measuring the value of the magnetic field passing through the die, so that the possibility of whether defects occur in the die is judged; the magnetometer reports the location of possible defects to the control system; the control system controls the moving track to operate, and the X-ray detection device is moved to a position where a defect possibly exists; the X-ray detection device detects X-rays at positions where defects possibly exist and provides an image report after detection;

wherein the mobile module comprises a mounting plate; the mounting plate is used for fixing the magnetic field instrument and the X-ray detection device on the mobile module; the moving module further comprises a screw rod and a moving track; the moving track is matched with the guide block on the back surface of the mounting plate, so that the mounting plate only has one degree of freedom of moving along a first direction; the screw rod is matched with a thread block positioned on the back surface of the mounting plate; the screw rod is driven to rotate, so that the thread block generates displacement along a first direction, and the mounting plate is further linked to move along the first direction; the magnetic field instrument moves along with the mounting plate, performs magnetic field scanning on the die along a first direction, records the acquired values, and generates a data set of < position-value > and stores the data set in the control system;

the moving module further comprises a driving part; the driving component is used for driving and controlling the mounting plate to move on the moving track;

the moving module further comprises a distance bracket; the first end of the distance bracket is arranged on the mounting plate; the second end of the distance bracket is contacted with the measured mould; the distance support comprises a telescopic mechanism and is used for adjusting the distance between the mounting plate and the measured die;

the magnetic field instrument is a passive magnetic flaw detection device; the magnetic field instrument comprises a probe array formed by a plurality of sensing probes and is arranged along a second direction perpendicular to the first direction; the distribution positions of the plurality of sensing probes are adjusted by the magnetic field instrument through the adjusting mechanism, so that the detection range of the magnetic field instrument covers the maximum length of the tested die in the second direction;

the X-ray detection device comprises a radiation source arranged on the mounting plate and positioned on one side of the mold, and a ray detector positioned on the other side of the mold; the X-ray detection device also comprises at least one group of shielding cases which are used for shielding and protecting the X-ray in the detection process;

the mobile module further comprises a safety grating module; the safety grating module is used for detecting whether foreign matters or personnel stay around the tested die;

the mobile module further comprises a light and sound warning system for warning possible radiation hazard areas with light and sound during operation of the X-ray detection device;

the die casting equipment comprises a die casting process; the die casting process comprises the following steps:

s1: carrying out standard quality inspection preparation on production elements related to die-casting production to ensure that equipment, dies and materials related to the production are in qualified production states;

s2: performing standard die-casting production at least once in a qualified production state, and performing magnetic field scanning at least once by using the magnetic field instrument at the T moment of the injection completion and heat preservation forming stage to confirm the magnetic field value in a die containing a casting in the standard die-casting production flow; determining a set of standard measurement values < position-value > for use as a threshold for abnormality judgment in normal production by the above-mentioned magnetic field inspection;

s3: in the subsequent conventional die-casting production, at the same T moment after each round of die-casting is finished, the die-casting equipment performs magnetic field scanning on the die and the internal semi-finished product and compares the magnetic field scanning with a standard measurement value set;

s4: if the abnormal position exists, the control system records the position coordinates, controls the X-ray detection device to carry out radioactive inspection on the abnormal position, and stores the inspection record into the control system.

The beneficial effects obtained by the invention are as follows:

1. the die-casting equipment and the die-casting process adopt two non-contact detection devices, can detect the die-casting equipment at the injection heat-preservation stage, and greatly shorten the detection period by distinguishing the detection mode after demoulding and cooling in the past;

2. the die-casting equipment and the die-casting process adopt electromagnetic waves and radioactive particles for penetration detection, can perform perspective imaging on various micro positions of a die and a die-casting product, and can quickly find out the difference through an automatic program and an algorithm due to the comparison detection;

3. the die casting equipment and the die casting process can regionalize and numerically adjust the detection threshold according to the process requirements of copper products, thereby being suitable for different quality inspection precisions and balancing the production cost and the production rate.

4. The die casting equipment adopts modularized parts, and is convenient for maintenance and technical upgrade of the device in the future.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

FIG. 1 is a schematic view of the arrangement of the present invention;

FIG. 2 is a schematic view of another arrangement according to the present invention;

FIG. 3 is a schematic diagram of a side view angle and coordinate setting method according to the present invention;

figure 4 is a schematic view of the use of the distance holder;

fig. 5 is a schematic diagram of the linkage device of the present invention.

The reference numbers illustrate: 101-a magnetometer; 102-an X-ray detection device; 103-a mounting plate; 104-a mobile module; 105-a movement track; 106-thread block; 107-lead screw; 108-a coupling; 109-a guide block; 110-a limiting block; 111-a magnetizer; 112-a detector; 113-distance holder; 20-die casting mold; 201-a sleeve; 202-a movable core; 203-a pressure sensitive sensor; 301-sun gear; 302-a planetary gear; 303-gear ring; 304-a motor; 305-cantilever.

Detailed Description

In order to make the technical solution and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the embodiments thereof; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or assembly referred to must have a specific orientation.

The first embodiment is as follows:

as shown in fig. 1 and fig. 2, the pure copper die casting equipment comprises a magnetic field instrument, an X-ray detection device, a mobile module and a control system; the magnetic field instrument and the X-ray detection device are arranged on the moving module and are driven by the moving module to move to the specified position of the die for detection; the magnetic field instrument generates a standard measuring magnetic field in the die-casting die, and whether the die has a position with change or change rate exceeding a threshold value is judged by measuring the value of the magnetic field passing through the die, so that the possibility of whether defects occur in the die is judged; the magnetometer reports the location of possible defects to the control system; the control system controls the moving track to operate, and the X-ray detection device is moved to a position where a defect possibly exists; the X-ray detection device detects X-rays at positions where defects possibly exist and provides an image report after detection;

wherein the mobile module comprises a mounting plate; the mounting plate is used for fixing the magnetic field instrument and the X-ray detection device on the mobile module; the moving module further comprises a screw rod and a moving track; the moving track is matched with the guide block on the back surface of the mounting plate, so that the mounting plate only has one degree of freedom of moving along a first direction; the screw rod is matched with a thread block positioned on the back surface of the mounting plate; the screw rod is driven to rotate, so that the thread block generates displacement along a first direction, and the mounting plate is further linked to move along the first direction; the magnetic field instrument moves along with the mounting plate, performs magnetic field scanning on the die along a first direction, records the acquired values, and generates a data set of < position-value > and stores the data set in the control system;

the moving module further comprises a driving part; the driving component is used for driving and controlling the mounting plate to move on the moving track;

the moving module further comprises a distance bracket; the first end of the distance bracket is arranged on the mounting plate; the second end of the distance bracket is contacted with the measured mould; the distance support comprises a telescopic mechanism and is used for adjusting the distance between the mounting plate and the measured die;

the magnetic field instrument is a passive magnetic flaw detection device; the magnetic field instrument comprises a probe array formed by a plurality of sensing probes and is arranged along a second direction perpendicular to the first direction; the distribution positions of the plurality of sensing probes are adjusted by the magnetic field instrument through the adjusting mechanism, so that the detection range of the magnetic field instrument covers the maximum length of the tested die in the second direction;

the X-ray detection device comprises a radiation source arranged on the mounting plate and positioned on one side of the mold, and a ray detector positioned on the other side of the mold; the X-ray detection device also comprises at least one group of shielding cases which are used for shielding and protecting the X-ray in the detection process;

the mobile module further comprises a safety grating module; the safety grating module is used for detecting whether foreign matters or personnel stay around the tested die;

the mobile module further comprises a light and sound warning system for warning possible radiation hazard areas with light and sound during operation of the X-ray detection device;

the die casting equipment comprises a die casting process; the die casting process comprises the following steps:

s1: carrying out standard quality inspection preparation on production elements related to die-casting production to ensure that equipment, dies and materials related to the production are in qualified production states;

s2: performing standard die-casting production at least once in a qualified production state, and performing magnetic field scanning at least once by using the magnetic field instrument at the T moment of the injection completion and heat preservation forming stage to confirm the magnetic field value in a die containing a casting in the standard die-casting production flow; determining a set of standard measurement values < position-value > for use as a threshold for abnormality judgment in normal production by the above-mentioned magnetic field inspection;

s3: in the subsequent conventional die-casting production, at the same T moment after each round of die-casting is finished, the die-casting equipment performs magnetic field scanning on the die and the internal semi-finished product and compares the magnetic field scanning with a standard measurement value set;

s4: if the abnormal position exists, the control system records the position coordinate, controls the X-ray detection device to carry out radioactive inspection on the abnormal position, and stores the inspection record into the control system;

the invention provides a process for improving detection and production conversion speed in die-casting production based on a non-contact die and an internal defect detection method of an internal semi-finished part, and by combining a magnetic measurement method and an X-ray measurement method; but if necessary, the production flow is allowed to stop so as to further detect the abnormal position;

fig. 1 and fig. 2 are views showing an embodiment of the present embodiment; the first side of the mounting plate 103 comprises two guide blocks 109; the two guide blocks are positioned in cooperation with the two moving rails 105, so that the mounting plate can move precisely along the first direction indicated by the x axis on the figure; the mounting plate is in threaded fit with a driving screw rod 107 through a threaded block 106 with a threaded hole; a first end of the screw rod 107 is connected with an output shaft of the driving part 104 through a coupler 108;

further, the farthest end of the moving rail is fixedly installed with the stopper 110, and the center of the stopper 110 includes a fixing hole; the fixing hole is fixedly installed with the screw rod; the limiting block limits the mounting plate when the mounting plate moves along the first direction, and the mounting plate is prevented from falling off from the moving track to prevent the detection device from being damaged; meanwhile, the limiting block rigidly corrects the straightness and parallelism of the screw rod and the moving track, so that the mounting plate can accurately move along a first direction all the time;

further, the driving part outputs power to the screw rod through an output shaft to cause the rotary motion of the screw rod; when the screw rod rotates, because two ends of the screw rod are fixed, the screw rod and the thread block generate acting force, the thread block is driven to move along the length direction of the screw rod, namely a first direction, and the mounting plate is driven to move;

further, the driving member is preferably a coding motor; the coding motor can accurately control the rotating speed, the torque and the rotating angle of the output shaft; controlling the moving speed of the mounting plate along a first direction by controlling the rotating speed of the output shaft; determining the moving distance of the mounting plate in the first direction by calculating the rotated angle of the output shaft; therefore, the control system sends control instructions about the rotating speed and the rotating angle to the coding motor, so that the moving distance and the moving speed of the mounting plate can be accurately controlled;

furthermore, the magnetic field instrument is composed of a plurality of magnetic field induction probes to form an array; the width of the array can be adjusted in a manual or mechanical control mode according to the actual width to be detected of the die so as to meet the detection requirement; furthermore, one or more magnetic field induction probes can be configured to serve as redundant spare parts of the magnetic field instrument, and when the main force probe is unstable or stops working, the redundant probe is started to supplement so as to ensure that the magnetic field instrument can continue to operate;

further, on one side of the mold, a magnetizer 111 is provided; the magnetizer generates a magnetic field through electromagnetic induction and temporarily magnetizes the die after contacting the mold; meanwhile, a positioning spigot mechanism is arranged at the top end of the magnetizer and the mold and is used for keeping the magnetizer and the mold relatively static during magnetization;

further, the magnetometer provides readings of magnetic field strength in three axial directions using non-contact detection; an X-axis coordinate with the first direction, a Y-axis coordinate with the second direction, and a Z-axis coordinate perpendicular to the X, Y-axis coordinate; depending on the type of defect (e.g., transverse crack, defective weld, vertical crack head) and the plane/axis in which it is located, the corresponding change in the magnetic field is associated with a particular type of defect in the mold; the magnetic induction lines in the mould trigger the deflection of a plurality of magnetic axes according to the size and the shape of the internal structure of the mould; therefore, the standard value is determined by using the standard die casting production, and the standard value is used as an exemplary value for comparison in the later detection;

further, the mould is integrally scanned along a first direction through the moving module, and the position of an abnormal point of the standard measurement value is searched;

further, the X-ray detection device is positioned above the magnetic field instrument; generally, the X-ray detection device is in a standby mode to reduce energy consumption and avoid environment and personal injury caused by excessive high-energy rays; the radiation source of the X-ray detection device is mounted on the mounting plate; the radiation source emits detection rays along the Z axis towards the direction of the mould; after passing through the mold, the detection rays fall onto the ray detector 112 positioned on the other side of the mold, and the ray detector performs reading analysis on the detection rays to provide a detection result image; the radiation detector preferably employs a digital technology imaging panel for capturing radiation from the radiation source; relevant X-ray detection techniques are well known to those skilled in the art and will not be described in detail herein;

further, the top of the moving module adopts a sliding rail or a guide rail (not shown in the figure) for moving the die-casting equipment out of the working range during die-casting production and demolding and taking; and when the die-casting process is carried out again, the die-casting process is moved into the working range again.

Example two:

this embodiment should be understood to include at least all of the features of any of the foregoing embodiments and further modifications thereon;

according to the formula for calculating the theoretical magnetic field strength, the magnetic field strength H is inversely proportional to the cube of the distance r of the test point from the center of the magnetic field, i.e.Therefore, when the distance between the die and the magnetometer is slightly changed, the magnetic force value obtained by testing is obviously changed and cannot be compared with the standard value for detection;

thus, on the mounting plate, two or more distance holders 113 are provided, as shown in fig. 4; the distance bracket is made of non-magnetized materials, such as aluminum alloy, stainless steel or engineering plastics; the distance holder comprises a sleeve 201 and a movable core 202; the movable core is embedded into the sleeve and can be drawn and moved in the sleeve; one end of the movable core is provided with an elastic element; the elastic element can use common parts such as a spring, elastic rubber and the like; the movable core is contacted with one end inside the sleeve through an elastic element, and the total length of the distance bracket can be compressed after the other end of the movable core is pressed, and the movable core is reset after the pressure is removed;

a pressure-sensitive sensor 203 is included at one end of the movable core, which is in contact with the mold, for detecting the contact pressure between the movable core and the mold, and the compressed length of the distance holder can be calculated accordingly, thereby calculating the distance between the magnetic field instrument and the mold;

setting the distance between the magnetic field instrument and the die to be S during detection in the standard die-casting production₀At this time, the detected magnetic field intensity is H₀(ii) a During actual detection, the distance between the magnetic field instrument and the mold is S; the actually measured magnetic field strength H should be equal to the ratio of the distances, i.e.:thus, the actually measured magnetic field intensity is subjected to proportion correction and then is further compared;

further, using the correction coefficient, when calculating the magnetic field strength, the magnetic field measurement value is corrected: make itK is a distance correction coefficient, and the distance correction coefficient k is introduced to correct the calculation of the magnetic field intensity at different distances due to the temperature and the room temperature of the mold and the signal-to-noise ratio change possibly generated after the distance of the magnetic field instrument is changed; the distance correction factor k can be measured by effective statistical experiments.

Example three:

this embodiment should be understood to include at least all of the features of any of the embodiments described above and further refinements thereto:

when a part of castings are cast, the thickness of the used die-casting die is too large along the Z-axis direction, so that the X-ray detection device still cannot reach the standard of the lowest readable value when the X-ray detection device is used for measuring the maximum power; if the measuring power of the X-ray detecting device is increased, the safe power range of radiation measurement can be exceeded, and radiation pollution is caused; thus, by rotating the relevant measuring device around the mould, the mould is measured from another usable angle;

as shown in fig. 4, a circumferential driver is arranged above the magnetizer; the circumferential drive comprises a planetary gear set and a motor 304; the planetary gear set includes a sun gear 301, planet gears 302, and ring gear 303; the central gear is coaxial with the central shaft of the magnetizer; the number of the planetary gears is three or more; the inner circumference and the outer circumference of the gear ring are provided with continuous teeth; the ring gear surrounds the planet gear and the sun gear; each of the planet gears is meshed with the sun gear and is meshed with the ring gear; fixedly mounting the central gear so that the central gear cannot rotate;

further, the motor outputs power to drive the gear ring to rotate;

further, as shown in fig. 5, the mounting plate and the driving device are fixedly mounted by a structural member and then combined with a cantilever 305 to form an integral module; the cantilever is connected and fixed with the gear ring, and the cantilever is enabled to rotate along with the rotation of the gear ring, so that the mounting plate and various devices on the mounting plate, which are additionally mounted by the cantilever, can rotate around the die by taking the die as a rotation center, and the magnetic field or X-ray detection can be carried out on the die from a second angle; due to the characteristics of the planetary gear set, the central shaft does not need to rotate, the rotation of the gear ring is limited by the matching of the planetary gears, the rotation tolerance is small, no rotating shaft is deviated, the rotation is smooth, the angle is accurate, and the gear ring is suitable for application schemes requiring accurate angle adjustment.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described, and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many elements are examples and do not limit the scope of the disclosure or claims.

Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.

In conclusion, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that these examples are illustrative only and are not intended to limit the scope of the invention. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.