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Reinforced treatment method of spring steel surface blueing coating

A technology of strengthening treatment and bluing treatment, applied in the direction of anodizing, metal material coating process, etc., can solve the problem of uneven film formation of bluing film, and achieve the effect of uniform and stable oxide film, uniform film formation and easy experimental conditions.

Active Publication Date: 2015-11-18
BAOSTEEL GRP NANTONG WIRE PROD
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for strengthening the bluing film on the surface of spring steel. The film is uniform and the surface quality is good, which greatly improves the protection of metals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Degreasing: first heat the NaOH solution with a concentration of 15g / L to boiling, and put it into the spring steel workpiece for degreasing treatment, the treatment time is 15min;

[0025] (2) Hot water washing: the hot water temperature is 80℃, and the water is clean;

[0026] (3) Cold water washing: ordinary tap water, rinse well;

[0027] (4) Blueing treatment:

[0028] The bluing liquid composition is: NaNO 2 180g / L, NaNO370g / L, ZnO60g / L, NaOH800g / L;

[0029] Blueing temperature: 120℃;

[0030] Soaking time: 15min;

[0031] (5) Potentiostatic polarization treatment:

[0032] Polarizing liquid: NaOH800g / L, NaNO 2 200g / L;

[0033] Polarization potential: select according to the film-forming workpiece: 0.2V;

[0034] Polarization time: 20min;

[0035] (6) Hot water washing: the hot water temperature is 80℃, and the water is clean;

[0036] (7) Wash in cold water: wash with ordinary tap water;

[0037] (8) Saponification:

[0038] Put the cleaned workpiece into a saponification tank ...

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PUM

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Abstract

The invention relates to a reinforced treatment method of a spring steel surface blueing coating, which comprises the following steps: carrying out deoiling treatment on spring steel, washing with hot water, washing with cold water, and blueing to obtain blued spring steel; and carrying out constant-potential polarization treatment on the blued spring steel, washing with hot water, washing with cold water, saponifying, flushing with water, drying, soaking in hot oil, and controlling oil. The electrochemical method is utilized to carrying out anodic polarization on the blueing coating to reinforce the blueing coating and fill up the film formation clearance, so that the blueing coating has higher corrosion resistance and wear resistance.

Description

Technical field [0001] The invention belongs to the field of processing methods for blue film on the surface of steel parts, and particularly relates to a method for strengthening the blue film on the surface of spring steel. Background technique [0002] Blueing refers to the material protection technology of heating steel in air or directly immersed in a concentrated oxidizing solution to produce a very thin oxide film on the surface, also known as blackening. It is one of the most simple and effective surface treatment processes indispensable for mechanical parts. The purpose of bluing is to improve the anti-rust ability and make its color beautiful. The alkaline high-temperature bluing of steel has the functions of anti-corrosion, decoration, lubrication and elimination of quenching stress. The ferroferric oxide formed at high temperature is sky blue, so it is called For bluing treatment, it is often used in the weapon industry; ferroferric oxide formed by oxidation at low t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/62C23F17/00C25D11/34
Inventor 肖轶钟庆东孟昭贤周建华周代义赵启亮
Owner BAOSTEEL GRP NANTONG WIRE PROD
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