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Stainless steel chemical pigmenting liquid and chemical pigmenting method

A chemical coloring, stainless steel technology, applied in metal material coating process, superimposed layer plating, coating and other directions, can solve the problems of insufficient uniformity and reproducibility of acid chemical coloring of stainless steel, and achieve bright color and color film. Uniform, reproducible effect

Inactive Publication Date: 2012-01-25
TAIYUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a stainless steel chemical coloring liquid and its chemical coloring method to solve the problem of insufficient uniformity and reproducibility of acidic chemical coloring of stainless steel

Method used

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  • Stainless steel chemical pigmenting liquid and chemical pigmenting method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example figure 1 Middle: implement as follows:

[0023] (1) Stainless steel surface pretreatment

[0024] The stainless steel test piece 6 is pre-treated by water washing, degreasing, water washing, polishing, water washing, activation, water washing, etc., to remove the dirt layer and oxide layer on the surface of the stainless steel.

[0025] (2) One-step treatment of coloring-hardening film

[0026] The pre-treated stainless steel test piece 6 is used as the cathode, immersed in the coloring solution 3, the formula of the coloring solution 3: concentrated H 2 SO 4 490g / L, CrO 3 250g / L, (NH 4 ) 6 Mo 7 o 24 4H 2 O 7.0g / L, ZnSO 4 5.0g / L, MnSO 4 4.0g / L, OP-106.0g / L, solution temperature 65℃, according to the attached figure 1 Connect the two loops of coloring and potential measurement, use DC power supply 1, and control the current density to 6.3mA / dm 2 , Carry out chemical coloring with small electric current, wash with flowing water after coloring.

[002...

Embodiment 2

[0034] (1) Stainless steel surface pretreatment

[0035] With embodiment 1.

[0036] (2) One-step treatment of coloring-hardening film

[0037] The pre-treated stainless steel test piece 6 is used as the cathode, immersed in the coloring solution 3, the formula of the coloring solution 3: concentrated H 2 SO 4 490g / L, CrO 3 250g / L, (NH 4 ) 6 Mo 7 o 24 4H 2 O 7.0g / L, ZnSO 4 5.0g / L, MnSO 4 4.0g / L, sodium dodecylbenzenesulfonate 6.0g / L, solution temperature 65℃, according to the attached figure 1 Connect the two loops of coloring and potential measurement, use AC power supply 1, and control the current density to 5.2mA / dm 2 , Carry out chemical coloring with small electric current, wash with flowing water after coloring.

[0038] Shading result:

[0039] Potential difference / mV

[0040] Next step is with embodiment 1.

Embodiment 3

[0042](1) Stainless steel surface pretreatment

[0043] With embodiment 1.

[0044] (2) Coloring - hard film treatment

[0045] The pre-treated stainless steel test piece 6 is used as the cathode, immersed in the coloring solution 3, the formula of the coloring solution 3: concentrated H 2 SO 4 490g / L, CrO 3 250g / L, (NH 4 ) 6 Mo 7 o 24 4H 2 O 7.0g / L, ZnSO 4 5.0g / L, MnSO 4 4.0g / L, cetyltrimethylammonium bromide 1.5g / L, solution temperature 65℃, according to the attached figure 1 Connect the two loops of coloring and potential measurement, use pulse power supply 1, and control the current density to 7.0mA / dm 2 , Carry out chemical coloring with small electric current, wash with flowing water after coloring.

[0046] Shading result:

[0047] Potential difference / mV

[0048] Next step is with embodiment 1.

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Abstract

The invention discloses a chemical coloring liquid of stainless steel and chemical coloring method, which comprises the following parts: chromic anhydride, sulfuric acid, water, accelerant, stabilizer, brightener and homogeneous agent. The coloring method comprises the following steps: predisposing the stainless steel surface; coloring; hardening film through little current; sealing; drying.

Description

technical field [0001] The invention relates to a metal chemical coloring liquid and a chemical coloring method thereof, in particular to a stainless steel chemical coloring liquid and a method for chemically coloring the stainless steel. Background technique [0002] Colored stainless steel is more and more widely used because of its excellent decoration, wear resistance, corrosion resistance and easy processing. At present, the coloring methods of colored stainless steel mainly include: ion deposition oxide or hydroxide method, high temperature oxidation method, chemical oxidation method, electrochemical oxidation method, gas phase cracking method and laser irradiation method. Among them, the acid oxidation method developed on the basis of the INCO method has become the main method for the production of colored stainless steel because of its good comprehensive performance. However, there are still two fatal shortcomings in the acid oxidation method, one is the uniformity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C22/84C25D5/00
Inventor 薛永强栾春晖程作慧汤芝平崔子祥
Owner TAIYUAN UNIV OF TECH
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