Molten Pool Treatment Method Based on Laser Transmission Welding of Plastics

A technology of laser transmission welding and processing method, which is applied in the field of molten pool processing based on laser transmission welding plastics, can solve the problems of blurred outline, rough surface of observation results, and difficulty in clearly observing the shape of molten pool, etc., and meets the requirements of equipment cost Low, reliable observation results, easy to operate effect

Active Publication Date: 2021-02-09
SUZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] 1. The research team of Jiangsu University in China observed the molten pool of transparent and opaque PA66 welded by laser transmission. figure 2 As shown in , the surface of the observation results is rough, and the outline is relatively blurred, so it is difficult to clearly observe the morphology of the molten pool;
[0005] 2. The research team of the Indian Institute of Technology observed the molten pool of laser transmission welding PE. image 3 As shown, the outline of the observation results is not clear, and it is difficult to observe the morphology characteristics of the molten pool intuitively;

Method used

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  • Molten Pool Treatment Method Based on Laser Transmission Welding of Plastics
  • Molten Pool Treatment Method Based on Laser Transmission Welding of Plastics
  • Molten Pool Treatment Method Based on Laser Transmission Welding of Plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] 1. Carry out laser transmission welding on the transparent PC plastic board, add aluminum powder and carbon black mixed powder in the middle of the lower two layers of PC plastic board, the mass ratio of aluminum powder and carbon black is 1:4, and cut and process on the welded sample Obtain the welding sample including the observation plane of the molten pool cross section;

[0075] 2. Place the welding sample in step 1 in absolute ethanol, clean it with an ultrasonic cleaner for 3 minutes, and place it in a constant temperature blast drying oven to dry;

[0076] 3. Mix and stir acrylic powder (GORAL / A90045) and liquid enhancer (GORAL / A90340) at a mass ratio of 1:1 to make a metallographic cold mounting material, and place it in a cylindrical mosaic mold, bake it in step 2 The dried welding sample is placed on the top of the metallographic cold mounting material, and after the mounting material is cooled and solidified, a cylindrical observation sample is formed. The ...

Embodiment 2

[0082] 1. Carry out laser transmission welding on the transparent PC plastic board, add a metal aluminum film layer in the middle of the lower two PC plastic boards, cut and process the welding sample including the observation plane of the cross-section of the molten pool on the welded sample;

[0083] 2. Place the welding sample in step 1 in absolute ethanol, clean it with an ultrasonic cleaner for 3 minutes, and place it in a constant temperature blast drying oven to dry;

[0084] 3. Mix and stir acrylic powder (GORAL / A90045) and liquid enhancer (GORAL / A90340) at a mass ratio of 1:1 to make a metallographic cold mounting material, and place it in a cylindrical mosaic mold, bake it in step 2 The dried welding sample is placed on the top of the metallographic cold mounting material, and after the mounting material is cooled and solidified, a cylindrical observation sample is formed. The mosaic mold in this embodiment has an outer diameter of 34mm, an inner diameter of 25mm, an...

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Abstract

The invention discloses a molten pool processing method based on laser transmission welding of plastics. The molten pool processing method includes: S1, performing laser transmission welding on plastic plates, and cutting after welding to obtain a welding sample containing a cross-sectional observation plane of the molten pool S2, put the welding sample into the metallographic cold mounting material to cool and solidify, and obtain the observation sample; S3, grind and polish the observation sample; S4, observe the welding pool of the observation sample. The molten pool processing method of the present invention is easy to operate, can obtain observation pictures with clear interfaces, and can easily observe the morphology characteristics of plastic laser transmission welding molten pools, has low requirements for equipment cost, and has the advantages of reliable observation results and short time consumption. .

Description

technical field [0001] The invention relates to the technical field of laser transmission welding, in particular to a molten pool processing method based on laser transmission welding plastics. Background technique [0002] As a non-contact, energy-saving, environmentally friendly and green welding method, laser transmission welding has the advantages of high welding speed, small heat-affected zone, no residue, high bonding strength, and small weld deformation. It has been gradually used in the automotive industry, biological Medical equipment manufacturing and the manufacturing of micro-machines in MEMS have shown broad development prospects. As an important standard for evaluating and analyzing the welding quality of samples, the observation of the depth, width and microstructure of the molten pool cross-section of the welding samples can understand the degree of welding of the welded joints, analyze the cause of joint failure, and help to adjust the welding process param...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/16
Inventor 王传洋王超颜廷培钟红强
Owner SUZHOU UNIV
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