Copper precision part burr removal method

A technology for removing burrs and parts, applied in the field of machining, can solve problems affecting assembly quality, small size, low quality and low efficiency, etc., to improve surface finish and oxidation resistance, improve processing time, and high consistency Effect

Active Publication Date: 2013-04-03
SEENPIN PROD ZHEJIANG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of burrs will affect the accuracy of precision components, and at the same time will cause a large positive and negative deviation in the product inspection process, and the processed workpiece is often misjudged as a substandard product
Precision parts with burrs can also affect the assembly quality of the assembly
In the field of precision machining, the size of precision products is generally small. Using traditional processes to remove burrs from precision and tiny parts is not only low in quality and inefficient, but also increases production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] After the copper precision parts are degreased and cleaned, rinse the workpiece, put the workpiece into the ultrasonic wave for 5 minutes, and then soak the large copper precision parts in the corrosion inhibitor solution for 15 minutes, heating and controlling the temperature at 45 degrees Celsius , the corrosion inhibitor formula is as follows:

[0015] Corrosion inhibitor formula (mass percentage): defoamer 0.3%, OP-7 emulsifier 0.3%, benzotriazole 0.5%, benzothiazole sodium salt 1%, 2,5-dimercaptothiadiazole disodium (30% aqueous solution) 10%, the rest is water.

[0016] After taking out the workpiece, put it directly into the corrosion solution preheated to 45 degrees Celsius, and ultrasonically corrode for 1 minute. The corrosion solution formula is as follows:

[0017] Corrosion solution formula 1 (mass percentage): ferric chloride 35%, hydrochloric acid 5%, defoamer 0.3%, OP-7 emulsifier 0.3%, benzotriazole 0.5%, mercaptobenzothiazole sodium salt 1%, The res...

Embodiment 2

[0019] After degreasing and cleaning the copper precision parts, rinse the workpiece, put the workpiece into the ultrasonic wave for 10 minutes, then soak the copper precision parts in the corrosion inhibitor solution for 15 minutes, heat and keep the temperature at 50 degrees Celsius, and slowly The formula of etching solution is as follows.

[0020] Corrosion inhibitor formula (mass percentage): defoamer 0.3%, OP-7 emulsifier, 0.5%, benzotriazole 0.5%, benzothiazole sodium salt 1%, 2,5-dimercaptothiadiazole Sodium (30% aqueous solution) 10%, the rest is water.

[0021] After taking out the workpiece, put it directly into the preheated 40°C corrosion solution, and ultrasonically corrode it for 2.5 minutes. The corrosion solution formula is as follows.

[0022] Corrosion solution formula (mass percentage): 8% ammonium chloride, 0.8% sodium chlorate, 25% concentrated hydrochloric acid, 0.3% defoamer, 0.3-0.5% OP-4 emulsifier, 0.5% benzotriazole, 2 , 5-dimercaptothiadiazole d...

Embodiment 3

[0024] After degreasing and cleaning the copper precision parts, rinse the workpiece, put the workpiece into the ultrasonic wave for 5 minutes, and then soak the copper precision parts in the corrosion inhibitor solution for 12.5 minutes, heat and control the temperature at 45 degrees Celsius to inhibit corrosion The liquid formula is as follows:

[0025] Corrosion inhibitor formula (mass percentage): defoamer 0.3%, OP-7 emulsifier, 0.3%, benzotriazole 0.5%, benzothiazole sodium salt 1%, 2,5-dimercaptothiadiazole Sodium (30% aqueous solution) 10%, the rest is water.

[0026] After taking out the workpiece, put it directly into the corrosion solution preheated to 45 degrees Celsius, and ultrasonically corrode for 4 minutes. The corrosion solution formula is as follows:

[0027] Corrosion solution formula 1 (mass percentage): ferric chloride 35%, hydrochloric acid 5%, defoamer 0.3%, OP-7 emulsifier 0.3%, benzotriazole 0.5%, mercaptobenzothiazole sodium salt 1%, The rest is wa...

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PUM

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Abstract

The invention provides a copper precision part burr removal method, which can perform chemical plating on the copper precision part to enhance the surface brightness and oxidation resistance of the precision part. By adopting ultrasonic-chemical corrosion burr removal/chemical plating integrated solution, strong high-pressure impact waves generated by ultrasonic cavitation effect can be utilized to remove micro-burr and floating burr in the product, thereby enhancing the surface smoothness; and the invention is not critical of the shape of the part, and the treatment can lower the internal stress of the part. The chemical-corrosion burr removal technique can overcome the defect that the ultrasonic method can not remove adhesive burr; the chemical oxidation method can be adopted to remove the adhesive burr; and the workpiece is immersed in a proper corrosion inhibition solution and corrosive solution, thereby selectively achieving the effect of burr removal on the basis of the vertical reaction principle by utilizing the difference between the substrate structure and burr.

Description

technical field [0001] The invention relates to a method for removing burrs from copper precision parts, in particular to the combined use of ultrasonic waves and chemical corrosion methods to remove burrs from copper precision parts, and belongs to the technical field of machining. technical background [0002] In the process of precision machining, redundant burrs will be derived on the surface, especially at the edges. The existence of burrs will affect the accuracy of precision components, and at the same time will cause a large positive and negative deviation in the product inspection process, and the processed workpiece is often misjudged as a substandard product. Precision parts with burrs can also affect the assembly quality of the assembly. In the field of precision machining, the size of precision products is generally small. Using traditional techniques to remove burrs from precision and tiny parts is not only low in quality and inefficient, but also increases pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/18
Inventor 黄毓强单晨严作海胡水坤房金鹏闫惠波翁建杰
Owner SEENPIN PROD ZHEJIANG
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