Technological method for deburring steel piece through chemical milling

A technology of chemical grinding and chemical grinding liquid, which is applied in the direction of chemical instruments and methods, grinding devices, grinding machine tools, etc., can solve the problems of removing large burrs and hard burrs, and achieves the effects of good effect, low cost and convenient use

Inactive Publication Date: 2012-02-01
PHENIX OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of chemical grinding and deburring of steel parts is that chemical grinding and deburring of steel parts can only remove small or soft burrs within 0.03mm; it is not as good as mechanical polishing to remove large burrs and hard burrs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiments of the present invention are made from the following chemical raw materials in proportions by volume and weight:

[0017] Hydrogen peroxide H 2 o 2 400(ml / l)

[0018] Ammonium bifluoride NH 4 HF 2 100(g / l)

[0019] Urea CO(NH 2 ) 2 100(g / l)

[0020] Benzoic acid C 6 h 5 COOH 5(g / l)

[0021] A small amount of additives

[0022] Cleaning method of the present invention comprises the following steps:

[0023] (1) at first the concentrated solution that above-mentioned proportioning by volume is made and water are mixed with chemical abrasive liquid by volume ratio 1: 3;

[0024] (2) After ultrasonic degreasing, degreasing, micro-etching and cleaning, the stamped parts or finished steel parts are immersed in the chemical polishing solution prepared in (1), and the temperature of the chemical polishing solution is controlled at 15 ° C. With a time of 35s, the burrs are removed cleanly.

Embodiment 2

[0026] Embodiments of the present invention are made from the following chemical raw materials in proportions by volume and weight:

[0027] Hydrogen peroxide H 2 o 2 300(ml / l)

[0028] Ammonium bifluoride NH 4 HF 2 110(g / l)

[0029] Urea CO(NH 2 ) 2 110(g / l)

[0030] Benzoic acid C 6 h 5 COOH 7(g / l)

[0031] A small amount of additives

[0032] Cleaning method of the present invention comprises the following steps:

[0033] (1) at first the concentrated solution that above-mentioned volume weight proportioning is made and water are mixed with chemical abrasive liquid by volume ratio 1: 2.5;

[0034] (2) After ultrasonic degreasing, degreasing, micro-etching and cleaning, the stamped parts or finished steel parts are immersed in the chemical polishing solution prepared in (1), and the temperature of the chemical polishing solution is controlled at 20 ° C. With a time of 50s, the burrs are removed cleanly.

Embodiment 3

[0036] Embodiments of the present invention are made from the following chemical raw materials in proportions by volume and weight:

[0037] Hydrogen peroxide H 2 o 2 500(ml / l)

[0038] Ammonium bifluoride NH 4 HF 2 120(g / l)

[0039] Urea CO(NH 2 ) 2 120(g / l)

[0040] Benzoic acid C 6 h 5 COOH 10(g / l)

[0041] A small amount of additives

[0042] Cleaning method of the present invention comprises the following steps:

[0043] (1) at first the concentrated solution that above-mentioned volume weight proportioning is made and water are mixed with chemical abrasive liquid by volume ratio 1: 4;

[0044] (2) After ultrasonic degreasing, degreasing, micro-etching and cleaning, the stamped parts or finished steel parts are immersed in the chemical polishing solution prepared in (1), and the temperature of the chemical polishing solution is controlled at 30 ° C. With a time of 80s, the burrs are removed cleanly.

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PUM

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Abstract

The invention relates to a technological method for deburring a steel piece through chemical milling. The technological method comprises the following steps: mixing chemical raw materials hydrogen peroxide H2O2, ammonium bifluoride NH4HF2, carbamide CO(NH2)2, benzoic acid C6H5COOH and a small amount of additives according to a certain volume / weight ratio to obtain a concentrated solution, and then mixing with water according to a volume ratio of 1:(2-4) to obtain a chemical milling liquid; and carrying out ultrasonic deoiling, degreasing, microetching and cleaning on a punched piece or finished steel piece, immersing in the chemical milling liquid prepared in the step (1), and soaking for 30-90 seconds while ensuring the temperature of the chemical milling liquid to be 10-35 DEG C, thus cleanly deburring the piece. The technological method has the characteristics of convenient use, low cost, reliable operation process, good deburring effect and the like, and is comparable with CPL-100. Besides, the technological method is more than 100 times cheaper than CPL-100.

Description

technical field [0001] The invention relates to a surface treatment process, more specifically to a process for removing burrs from steel parts by chemical grinding. Background technique [0002] For stamping parts or finishing parts of steel substrates, mechanical methods such as rolling or mechanical polishing cannot be used to remove burrs. It can only be removed by chemical methods to improve the accuracy of parts and remove burrs. The main technology is to analyze the burrs of iron and steel parts with a microscope, and to test the formula ratio and process parameters of different burrs, and then judge, and choose the burrs with better deburring effect and controllable production. The best combination formula can achieve the purpose of deburring steel parts, meet the needs of the precision of steel shutters and the needs of cost reduction. Since 1991, Phoenix Optics has been cooperating with Japan's Seiko Corporation to produce steel sheets. The steel shutter technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14B24B37/00
Inventor 方本利
Owner PHENIX OPTICAL CO LTD
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