阅读说明：本技术 零件雾化喷涂工艺 (Part atomizing and spraying process ) 是由 丛长林 于 2020-06-17 设计创作，主要内容包括：本发明涉及渗透探伤技术,公开了一种零件雾化喷涂工艺,包括如下步骤：S1、渗透：对待检试件表面进行雾化喷涂施加渗透液；S2、去除表面多余渗透液：去除所述待检试件表面的多余渗透液；S3、干燥：对所述待检试件表面动态吹扫烘干；S4、显像：对所述待检试件喷涂显像剂；S5、检验：在黑光灯的照射下观察所述待检试件表面是否存在缺陷。本发明能够保证对表面缺陷的判断的准确性。(The invention relates to a penetration inspection technology and discloses a part atomization spraying process, which comprises the following steps: s1, permeation: atomizing and spraying the surface of a test piece to be detected and applying penetrating fluid; s2, removing excessive surface penetrant: removing redundant penetrating fluid on the surface of the test piece to be detected; s3, drying: dynamically blowing and drying the surface of the test piece to be detected; s4, developing: spraying a developer on the test piece to be detected; s5, checking: and observing whether the surface of the test piece to be detected has defects or not under the irradiation of a black light lamp. The method and the device can ensure the accuracy of judging the surface defects.)

1. A part atomization spraying process comprises the following steps:

s1, permeation: atomizing and spraying the surface of a test piece to be detected and applying penetrating fluid;

s2, removing excessive surface penetrant: removing redundant penetrating fluid on the surface of the test piece to be detected;

s3, drying: dynamically blowing and drying the surface of the test piece to be detected;

s4, developing: spraying a developer on the test piece to be detected;

s5, checking: and observing whether the surface of the test piece to be detected has defects or not under the irradiation of a black light lamp.

2. The atomized spray process for parts according to claim 1, wherein in step S1, the atomized spray head is used for permeate spraying.

3. The atomized spraying process of parts according to claim 1, wherein in step S1, after spraying the penetrating fluid on the test piece to be inspected, the excessive penetrating fluid is dropped from the surface of the test piece to be inspected.

4. The atomizing spray process for parts as claimed in claim 1, wherein in step S2, the test piece to be inspected is subjected to water washing, water rinsing and water spray washing.

5. The parts atomizing spray process of claim 4, wherein the pressure of the water washing, the water replenishing washing and the water spray washing is not more than 0.27 MPa.

6. The parts atomizing spray process of claim 4, wherein the water wash is a dynamic water spray.

7. The atomizing spraying process for parts as claimed in claim 1, wherein in step S3, the test piece to be inspected is purged and dried along the transport direction of the test piece to be inspected.

8. The atomizing spraying process for parts as claimed in claim 1, wherein in step S3, the test piece to be inspected is subjected to purging and drying in a direction perpendicular to the transport direction of the test piece to be inspected.

9. The atomized spraying process of parts according to claim 1, wherein in step S3, the test piece to be tested is dried by a movable drying device from multiple angles through dynamic hot air circulation.

10. The part atomizing and spraying process as set forth in any one of claims 1 to 9, wherein the test piece to be tested is transported in a planar transportation or three-dimensional handling manner.

Technical Field

The invention relates to a penetrant inspection technology, in particular to a part atomization spraying process.

Background

In the manufacturing industry, surface defects on the surfaces of raw materials and parts often make the product quality not meet the requirements of customers. The fluorescent penetrant inspection is to coat penetrant containing fluorescent substance on the surface of the inspected piece, to permeate into the surface defect by capillary action, then to wash the redundant penetrant on the surface, to retain the penetrant in the defect, to develop the image.

At present, when the fluorescence penetrant inspection is carried out, because the penetrant of a test piece is incompletely removed, particularly, false fluorescence traces can be remained on the surface of the test piece to be inspected due to holes or blind holes, air film holes and other test pieces, surface defect false images are formed, and therefore wrong judgment is obtained, and the accuracy of the fluorescence penetrant inspection is influenced.

Therefore, how to ensure the accuracy of the fluorescence penetrant inspection still remains a technical problem to be solved urgently in the field.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a part atomization spraying process, which can ensure the accuracy of judging surface defects.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a part atomization spraying process comprises the following steps: s1, permeation: atomizing and spraying the surface of a test piece to be detected and applying penetrating fluid; s2, removing excessive surface penetrant: removing redundant penetrating fluid on the surface of the test piece to be detected; s3, drying: dynamically blowing and drying the surface of the test piece to be detected; s4, developing: spraying a developer on the test piece to be detected; s5, checking: and observing whether the defects exist under the irradiation of a black light lamp.

Preferably, in step S1, the permeate spray is performed using an atomizer.

More preferably, in step S1, after spraying the penetrating fluid on the test piece to be tested, the excessive penetrating fluid is dropped from the surface of the test piece to be tested.

Preferably, in step S2, the test piece to be inspected is subjected to water washing, water replenishment washing, and water spray washing.

Further, the pressure of the water cleaning, the water replenishing and the water spraying is not more than 0.27 MPa.

Preferably, the water spray is a dynamic water spray.

Specifically, in step S3, the test piece to be tested is purged and dried along the transportation direction of the test piece to be tested.

Specifically, in step S3, the test piece to be tested is purged and dried along the direction perpendicular to the transportation direction of the test piece to be tested.

Preferably, in step S3, the test piece to be tested is dried by a movable drying device in a dynamic hot air circulation manner from multiple angles.

Specifically, the test piece to be detected is transported in a plane transportation or three-dimensional lifting mode.

Through the technical scheme, the penetration detection method is different from a conventional directional drying mode, adopts a mode of dynamically blowing and drying the test piece to be detected, and can remove the penetrating fluid remained on the surface of the test piece to be detected more thoroughly by utilizing the characteristic of dynamic blowing in the dynamic blowing mode, reduce the probability of false fluorescent traces remained on the surface of the dried test piece to be detected, reduce the probability of misjudgment and ensure the accuracy of defect judgment in the imaging.

Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.

Drawings

FIG. 1 is a block diagram of the steps of a part atomizing spray process in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a part atomizing and spraying production line according to an embodiment of the invention;

FIG. 3 is a second schematic structural view of a part atomizing and spraying production line according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a drying apparatus according to an embodiment of the present invention, wherein the drying apparatus moves along a conveying direction of a conveying mechanism;

FIG. 5 is a schematic structural diagram of a drying apparatus according to an embodiment of the present invention, wherein the drying apparatus moves perpendicular to a conveying direction of a conveying mechanism;

fig. 6 is a schematic structural view of a grasping apparatus according to an embodiment of the present invention.

Description of the reference numerals

1 infiltration Chamber 11 infiltration zone

12 drip area 101 first penetration atomizer

102 second penetration atomizing spray head 2 cleaning chamber

21 cleaning nozzle 3 drying chamber

31 side wall 32 guide rail of drying chamber

33 sliding block 34 ceiling of drying chamber

4 developing chamber 41 developing nozzle

5 wait to examine test piece 6 drying device

71 plane conveying mechanism 711 upright post

712 reinforcing structure 72 three-dimensional conveying mechanism

721 grabbing device 8 blanking area

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be understood that, for the purposes of describing the invention and simplifying the description, the term "top and bottom" generally refers to the interior and exterior of the parts atomizing and spraying line itself, e.g., the ceiling and bottom of the infiltration chamber 1; the terminology is based on the orientations and positional relationships illustrated in the drawings, and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention; also, the directional terms of the present invention should be understood in conjunction with the actual installation state.

As shown in fig. 1, the atomization spraying process of the parts according to the basic embodiment of the invention comprises the following steps:

s1, permeation: atomizing and spraying the surface of a test piece 5 to be detected to apply penetrating fluid;

s2, removing excessive surface penetrant: removing redundant penetrating fluid on the surface of the test piece 5 to be detected;

s3, drying: dynamically blowing and drying the surface of the test piece 5 to be detected;

s4, developing: spraying a developer on the test piece 5 to be detected;

s5, checking: and observing whether the surface of the test piece 5 to be detected has defects or not under the irradiation of a black light lamp.

In the above basic technical solution of the present invention, "dynamically purging and drying the surface of the test piece to be detected" means that the device for purging and drying the test piece 5 to be detected can move relative to the test piece 5 to be detected, and in a moving state, the test piece 5 to be detected is dried by blowing.

To assist understanding, the above-mentioned basic technical solution of the part atomization spraying process of the present invention is further described below with reference to fig. 2 and 3 of a part atomization spraying production line for implementing a specific structure of the part atomization spraying process of the present invention.

As shown in fig. 2 and fig. 3, in the atomization spraying production line of the parts with the above specific structure, the conveying mechanism passes through the permeation chamber 1, the cleaning chamber 2, the drying chamber 3 and the developing chamber 4 which are arranged in sequence, so that the test piece 5 to be detected can be subjected to permeation flaw detection processes such as permeation, cleaning, drying and developing in sequence; in the drying chamber 3, a drying device 6 is arranged to dynamically dry the test piece 5 to be detected.

As a specific embodiment of driving the drying device 6, as shown in fig. 4, a guide rail 32 is provided on a side wall 31 of the drying chamber 3, the guide rail 32 is arranged along a conveying direction of the conveying mechanism, the drying device 6 is mounted on the guide rail 32 through a slide block 33, and generally, the drying device 6 is controlled by a driving mechanism such as a servo motor to move along with the slide block 33 at a certain speed, so as to blow air to and fro on the test piece 5 to be tested, i.e. to blow and dry the test piece 5 to be tested along the conveying direction of the test piece 5 to be tested. Alternatively, as another specific embodiment of driving the drying device 6, as shown in fig. 5, the drying device 6 may be disposed on a ceiling 34 of the drying chamber 3, a guide rail 32 is disposed on the ceiling 34, the guide rail 32 is disposed along a direction perpendicular to a conveying direction of the conveying mechanism, the drying device 6 is connected to the guide rail 32 through a slider 33, and the drying device 6 is controlled by a driving mechanism such as a servo motor to move along with the slider 33 at a certain speed to blow air to and fro on the test piece 5 to be tested, that is, to blow and dry the test piece 5 to be tested along the conveying direction perpendicular to the test piece 5 to be tested, so as to reduce the probability of misjudgment of the surface defect of the test piece 5 to be tested.

Wherein, the drying device 6 can be an existing blowing device, such as an industrial blower, or can also be an industrial fan; moreover, the industrial fan can be designed to be a swinging fan, and reciprocating air blowing to the test piece 5 to be detected can be realized.

It should be noted that, in the above technical solution, the number of the drying devices 6 is not limited to one, for example, a plurality of drying devices 6 are arranged on the side wall 31 of the drying chamber 3 along the vertical direction, meanwhile, the blowing directions of the drying devices 6 may also be different, and the drying devices are distributed on two opposite side walls 31 of the drying chamber 3 to blow the test piece 5 to be tested at multiple angles; or, a plurality of drying devices 6 are arranged on the ceiling 34 of the drying chamber 3 along the conveying direction of the conveying mechanism, the blowing directions of the drying devices 6 can be different, referring to fig. 3, a drying hot air blower is generally arranged in the bottom area of the drying chamber 3, the test piece 5 to be tested is dried by using a hot air drying mode, and the drying hot air blower is matched with the drying devices 6 arranged on the ceiling 34 of the drying chamber 3 for use, so that a good blowing and drying effect can be obtained; or, drying device 6 is arranged on lateral wall 31 and ceiling 34 of drying chamber 3 for the developments of the multi-angle are bloied to waiting to examine test piece 5, moreover, because the hot air heater of stoving forms hot air with the air heating, thereby in the in-process that sweeps, can be from the multi-angle to waiting to examine test piece 5 dynamic hot air circulation stoving.

However, in the existing fluorescent penetrant inspection process, generally, after the penetrant on the surface of the part is cleaned, the part needs to be dried, so as to ensure the surface of the part to be dry and avoid influencing the detection accuracy; however, after the surface of the part is cleaned, residual liquid of penetrating fluid may still exist on the surface of the part, after the part is dried, a trace which is easy to cause misjudgment is formed on the surface of the part, and after the developer is sprayed, the trace emits bright fluorescence under the irradiation of a black light lamp, so that the misjudgment of the position without the defect is made.

As can be seen from the above, in the above basic technical scheme of the part atomization spraying process of the present invention, the drying device 6 performs dynamic air blowing on the test piece 5 to be detected, and this dynamic air blowing manner is different from the conventional fixed air blowing direction manner, and by using the characteristic of movement, the air blowing of the test piece 5 to be detected has no dead angle, so that the penetrating fluid residual liquid existing on the surface of the test piece 5 to be detected can be better removed, and the dried surface of the test piece 5 to be detected has no fluorescent trace which is easy to cause misjudgment, thereby avoiding misjudgment.

As shown in fig. 2 and 3, the infiltration chamber 1 can be divided into an infiltration area 11 and a dripping area 12, and the specimen 5 to be detected is sprayed with an infiltration agent containing fluorescent substances in the infiltration area 11, so that the infiltration liquid infiltrates into the defects on the specimen 5 to be detected under the action of capillary; specifically, in the infiltration zone 11, a first infiltration atomizing nozzle 101 and a second infiltration atomizing nozzle 102 may be arranged, the first infiltration atomizing nozzle 101 may be arranged along the conveying direction of the conveying mechanism and at two sides of the conveying mechanism, such as symmetrically arranged or staggered arranged, and the second infiltration atomizing nozzle 102 may be arranged on the ceiling of the infiltration chamber 1; meanwhile, the spraying directions of the first penetrating and atomizing nozzles 101 can be different, the spraying directions of the second penetrating and atomizing nozzles 102 can be different, penetrating fluid is sprayed on the test piece 5 to be detected from multiple angles, and no dead angle is left.

The first infiltration atomizing nozzle 101 and the second infiltration atomizing nozzle 102 are existing atomizing nozzles, and can spray infiltration liquid into the air and coat the infiltration liquid on the test piece 5 to be detected in a mist form; subsequently, the test piece 5 to be detected is transported into the dripping area 12, so that redundant penetrating fluid on the test piece 5 to be detected drips; generally, a recovery channel such as a recovery tank may be provided at the bottom of the permeation chamber 1, the cleaning chamber 2, the drying chamber 3, and the developing chamber 4, so that the waste liquid generated in each process can be collected in a waste liquid storage container for centralized processing.

Further, as shown in fig. 3, a plurality of cleaning heads 21 are disposed in the cleaning chamber 2, the cleaning heads 21 may be disposed in different spray directions, for example, a part of the cleaning heads 21 may be disposed in a bottom region of the cleaning chamber 2 so that the part of the cleaning heads 21 can spray upwards, another part of the cleaning heads 21 may be disposed on a side wall so that the cleaning heads 21 spray laterally, and the part of the cleaning heads 21 disposed on the side wall may be designed in a bent pipe structure so that the heads are located above the test piece 5 to be inspected, thereby cleaning the top of the test piece 5 to be inspected. Generally, water is used as a cleaning agent; furthermore, the cleaning process can be divided into water cleaning, water replenishing cleaning and water spraying cleaning, and the steps of washing are added, so that the cleaning treatment is more sufficient; wherein, in the water spray-washing step, a structure similar to the above-mentioned dynamic air blowing of the drying device 6 can be adopted, so that the water spray-washing is dynamic water spray-washing, for example, the cleaning nozzle 21 is driven to move by a guide rail slider mechanism, so as to realize dynamic water spray-washing; in order to prevent the penetrating fluid in the defect on the test piece 5 to be detected from being washed out and affecting the accuracy of the detection result, water cleaning, water replenishing and water sprayingWashing pressure of not more than 0.27MPa_。

Further, a plurality of developing heads 41 may be provided in the developing chamber 4, with each developing head 41 being disposed on both sides of the conveying mechanism; further, a development shower head 41 may be disposed on the ceiling or other position of the development room 4; meanwhile, the spraying directions of the developing nozzles 41 can be different, the developing agent is sprayed on the surface of the test piece 5 to be detected, and penetrating fluid is sucked out of the defect and is expanded to the surface of the test piece 5 to be detected through capillary action; in a darkroom, under the irradiation of a black light lamp, the defect position emits bright fluorescence, so that the defect position is accurately detected. The developing nozzle 41 may be an atomizing nozzle, so that the developing agent is coated on the surface of the test piece 5 to be tested in a mist form.

The part atomization spraying production line can be suitable for nondestructive detection of parts in various industries such as automobiles, trains, ships, chemical engineering, aerospace and the like, and the sizes of different parts are greatly different; therefore, the test piece to be detected can be transported in a plane transportation or three-dimensional hoisting mode; specifically, a plane conveying mechanism 71 and a three-dimensional conveying mechanism 72 can be arranged in the part atomization spraying production line; for example, a test piece 5 to be detected with a relatively small size can be placed on the plane conveying mechanism 71 and sequentially passes through the infiltration chamber 1, the cleaning chamber 2, the drying chamber 3 and the developing chamber 4 along with the conveying action of the plane conveying mechanism 71, so that the test piece 5 to be detected is subjected to flaw detection processing such as infiltration, cleaning, drying and developing; the test piece 5 to be detected with relatively large size can be hoisted on the three-dimensional conveying mechanism 72, so that the test piece 5 to be detected is hoisted to pass through the infiltration chamber 1, the cleaning chamber 2, the drying chamber 3 and the developing chamber 4 for flaw detection treatment such as infiltration, cleaning, drying and developing; the part atomization spraying production line has multiple transportation modes; in addition, in the fluorescent penetrant inspection process, the contact between a human body and fluorescent penetrant liquid is reduced, and the health of the human body is protected.

Wherein, the plane conveying mechanism 71 can be an existing flow line conveying mechanism, such as a double-speed chain conveyor of a self-flowing conveying system; the plane conveyor 71 may be installed on the ground through a pillar 711, and in order to secure structural strength, a reinforcement structure 712 disposed obliquely may be connected between the pillar 711 and the bottom of the frame of the plane conveyor 71. The three-dimensional conveying mechanism 72 may be an existing suspension line type assembly line conveying mechanism, the test piece 5 to be detected is suspended below the three-dimensional conveying mechanism 72 by using the gripping device 721 and is lifted by the three-dimensional conveying mechanism 72, wherein the gripping device 721 may be an existing clamping mechanism, fig. 6 is a schematic structural diagram of the gripping device 721, and the test piece 5 to be detected is clamped and fixed by the gripping claws below. In addition, the area before entering the infiltration chamber 1 is divided into a blanking area 8, that is, in the range of the blanking area 8, the test piece 5 to be detected can be placed on the plane conveying mechanism 71 or hung below the three-dimensional conveying mechanism 72, and the preparation for conveying the test piece 5 to be detected is made. In addition, the three-dimensional transport mechanism 72 has an oval ring-shaped rail, wherein a part of the rail can be arranged outside the infiltration chamber 1, the cleaning chamber 2, the drying chamber 3, the imaging chamber 4 and the like, on one hand, a plurality of test pieces 5 to be detected for flaw detection can be hung in advance, and on the other hand, the test pieces 5 to be detected can be lifted out of the imaging chamber 4.

According to the technical scheme of the part atomization spraying process, the residual liquid can be effectively removed by dynamically blowing and drying the test piece 5 to be detected, the false fluorescent traces on the surface of the dried test piece 5 to be detected are reduced, the probability of defect false images is reduced, and the probability of misjudgment on the defects is reduced; in step S2, the water spray may be designed as dynamic water spray, which further enhances the effect of removing the residual liquid; in addition, by arranging the plane conveying mechanism 71 and the three-dimensional conveying mechanism 72, the test pieces 5 to be detected with different sizes can be conveyed, and the applicable range of parts is wide; meanwhile, the penetrant flaw detection has higher automation degree, and the labor intensity of workers is reduced.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.