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Stainless steel etching technique

A stainless steel and etching technology, applied in the field of stainless steel surface treatment technology, can solve the problems of limiting the application of stainless steel etching processing products, slowness, etc., and achieve the effect of fast etching speed, simple process and wide application prospect.

Inactive Publication Date: 2008-05-07
MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high hardness and high stability of stainless steel, it does not react or reacts too slowly with strong acids and alkalis, which limits the application of stainless steel etching products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First prepare the stainless steel etching solution according to the following formula:

[0022] Ferric chloride 400g / L;

[0023] Hydrochloric acid 4g / L;

[0024] Ammonium bifluoride 2g / L;

[0025] Thiourea 3g / L;

[0026] Hydrogen peroxide 3.5g / L;

[0027] Hypochlorous acid 5g / L.

[0028] Then select a stainless steel workpiece sample for surface cleaning such as cleaning and degreasing, and then coat the photosensitive glue on the surface, then expose the photosensitive glue according to the processing pattern, and then carry out development and hardening treatment, and then dip the sample In the stainless steel etching solution prepared above, the etching reaction temperature is controlled at 25°C, and the immersion time is 5 minutes. After the time is up, the sample is taken out and the remaining adhesive film on the surface is removed with an alkaline solution, and finally washed with water to obtain Products, the obtained product has obvious and precise etching...

Embodiment 2

[0030] First prepare the stainless steel etching solution according to the following formula:

[0031] Ferric chloride 500g / L;

[0032] Hydrochloric acid 3g / L;

[0033] Ammonium bifluoride 1.5g / L;

[0034] Thiourea 4g / L;

[0035] Hydrogen peroxide 5g / L;

[0036] Hypochlorous acid 5g / L.

[0037] Then select a stainless steel workpiece sample for surface cleaning such as cleaning and degreasing, and then coat the photosensitive glue on the surface, then expose the photosensitive glue according to the processing pattern, and then carry out development and hardening treatment, and then dip the sample In the stainless steel etching solution prepared above, the etching reaction temperature is controlled at 25°C, and the immersion time is 4 minutes. After the time is up, the sample is taken out and the remaining adhesive film on the surface is removed with an alkaline solution, and finally washed with water to obtain Products, the obtained product has obvious and precise etching...

Embodiment 3

[0039] First prepare the stainless steel etching solution according to the following formula:

[0040] Ferric chloride 600g / L;

[0041] Hydrochloric acid 3g / L;

[0042] Ammonium bifluoride 2g / L;

[0043] Thiourea 5g / L;

[0044] Hydrogen peroxide 3g / L;

[0045] Hypochlorous acid 5g / L.

[0046] Then select a stainless steel workpiece sample for surface cleaning such as cleaning and degreasing, and then coat the photosensitive glue on the surface, then expose the photosensitive glue according to the processing pattern, and then carry out development and hardening treatment, and then dip the sample In the stainless steel etching solution prepared above, the etching reaction temperature is controlled at 25°C, and the immersion time is 4 minutes. After the time is up, the sample is taken out and the remaining adhesive film on the surface is removed with an alkaline solution, and finally washed with water to obtain Products, the obtained product has obvious and precise etching e...

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Abstract

The invention provides an etching process for stainless steel, which comprises a plurality of steps: a. pre-processing, used to do surface cleaning operations like cleaning and deoiling of the initial stainless steel workpiece; b. coating, in which the surface of the stainless steel is applied with photosensitive glue, and the operations of exposure, development and hardening are conducted; c. etching, in which stainless steel etching solution is used to erode the exposed metal part of the stainless steel workpiece; wherein, the stainless steel etching solution is mainly composed of: ferric trichloride 400 to 600 g / L, hydrochloric acid 2 to 5 g / L, ammonium bifluoride 1 to 2 g / L, thioureas 2.5 to 5 g / L, etching promoter 1 to 5 g / L and regenerator 2 to 5 g / L; d. demoulding, when the etching is done to a certain extent, the remaining glue on the surface of the workpiece can be removed by means of dissolving liquid, and thus the intended product can be obtained after cleaning. The invention has the advantages of good etching speed, high precision, regenerating capacity of the etching solution, simple manufacturing process and broad market prospect.

Description

technical field [0001] The invention relates to a metal surface treatment process, in particular to a stainless steel surface treatment process. Background technique [0002] Stainless steel has the characteristics of high hardness, wear resistance, good stability, and strong impact resistance, and the products obtained by etching stainless steel have no edge stress of machining, and have been widely used in national defense, electronics, electrical appliances, etc., especially in Decorative signs and casings are more widely used. However, due to the high hardness and high stability of stainless steel, it does not react or reacts too slowly with strong acid and strong alkali, which limits the application of stainless steel etching products. Contents of the invention [0003] In view of the above problems, the main purpose of the present invention is to provide a stainless steel etching solution, which has simple process and fast etching speed. [0004] In order to achiev...

Claims

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Application Information

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IPC IPC(8): C23F1/28C23F1/02
Inventor 李三旭
Owner MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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