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Anti-soldering agent coating method

A solder stop and coating technology, applied in the field of superplastic forming and diffusion joining, can solve the problems of higher than 0.1mm, even requiring tens of microns, and cannot well meet the high precision requirements of the solder mask interface. The effect of coating accuracy and ensuring coating efficiency

Active Publication Date: 2018-08-07
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the situation of high-precision coating of the solder mask interface in a small area encountered in actual production and research, for example, the coating area is a circular area with a diameter of 1 mm, and the coating accuracy is required to be higher than 0.1 mm, or even to reach tens of Micron, the existing solder stop coating technology can not well meet the high precision requirements of the solder mask interface in this tiny area

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown in Fig. 1, a coating method of solder stopper adopts laser selective cladding technology and is designed according to actual needs and controlled by computer programming. Specifically: the first step is to spread a layer of solder stopper powder 3 on the surface of the test piece 5, and the thickness of the solder stopper powder 3 is controlled by adjusting the position of the scraper and the lifting table 6; the second step is to place the test piece 5 The position, shape and size data of the solder stop coating target area 4 designed above are imported into the computer software, and the laser movement trajectory planning of the solder stop coating area is realized through software program programming. The software program can be the software program in the prior art. ; The third step is to set the working parameters of the laser 2 according to the actual needs, and control the laser 2 to move according to the predetermined track through the ...

Embodiment 2

[0031] Such as Figure 1-2 As shown in Fig. 1, a coating method of solder stopper adopts laser selective cladding technology and is designed according to actual needs and controlled by computer programming. Specifically: the first step is to spread a layer of solder stop powder 3 on the surface of the test piece 5. The surface of the test piece 5 includes the position of the target coating area 4 for diffusion connection. The thickness of the solder stop powder 3 is adjusted by adjusting the scraper and lifting The position of platform 6 is controlled, and the solder stop powder 3 is epoxy resin powder and yttrium oxide powder mixed and stirred evenly, and the thickness of each layer of solder stop powder 3 is less than 100 microns; in the second step, design the test piece 5 Import the position, shape and size data of the solder stop target coating area 4 into the computer software, and realize the laser 2 movement track planning in the solder stop coating area through softwa...

Embodiment 3

[0033] Such as Figure 1-2 As shown in Fig. 1, a coating method of solder stopper adopts laser selective cladding technology and is designed according to actual needs and controlled by computer programming. Specifically: the first step is to spread a layer of solder stop powder 3 on the surface of the test piece 5. The surface of the test piece 5 includes the position of the target coating area 4 for diffusion connection. The thickness of the solder stop powder 3 is adjusted by adjusting the scraper and lifting The position of platform 6 is controlled, and the solder stop powder 3 is epoxy resin powder and yttrium oxide powder mixed and stirred evenly, and the thickness of each layer of solder stop powder 3 is less than 100 microns; in the second step, design the test piece 5 Import the position, shape and size data of the solder stop target coating area 4 into the computer software, and realize the laser 2 movement track planning in the solder stop coating area through softwa...

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Abstract

The invention provides an anti-soldering agent coating method. According to the technical key points of the coating method, a laser selective cladding technology is adopted, design is made according to practical needs, and computer programming control is achieved. The method comprises the steps that firstly, a layer of anti-soldering agent powder is horizontally paved on the surface of a test piece, wherein the thickness of the anti-soldering agent powder is controlled by adjusting the positions of a scraping plate and a lifting table; secondly, well-designed position, shape and dimension dataof an anti-soldering agent target coating area on the test piece are imported into computer software, and a laser moving track plan of the anti-soldering agent coating area is achieved through software programming; and thirdly, a laser is controlled to move according to a predetermined track through a computer, the anti-soldering agent powder horizontally paved on the surface of the test piece issubjected to selective cladding, and the target coating area is fast and accurately coated with the anti-soldering agent powder. According to the anti-soldering agent coating method, a micro area canbe fast and accurately coated with an anti-soldering agent, the thickness of the anti-soldering agent is controlled by adjusting the number of anti-soldering agent coating layers, the coating precision of a traditional anti-soldering agent coating technology is improved, and the coating efficiency is guaranteed.

Description

technical field [0001] The invention relates to the technical field of superplastic forming and diffusion connection, in particular to a method for coating solder stop. Background technique [0002] In the production of two-layer or multi-layer components using the superplastic forming / diffusion connection combination process, it is necessary to apply solder stop flux in the designed coating area to realize the diffusion connection of the diffusion area and the anti-diffusion connection of the coating area, and carry out corresponding measures. Superplastic forming. The coating of solder stop fluid determines the structure and forming quality of the coated area of ​​the component, and has an important impact on the production of components by the combined superplastic forming / diffusion bonding process. The coating accuracy of the solder stop flux will not only affect the accuracy of the diffusion connection interface, but also affect the forming accuracy of the multilayer s...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/10
Inventor 邵杰李志强刘运玺陈玮
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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