Stainless steel blackening agent and blackening treatment method
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A technology of blackening and stainless steel, applied in the direction of metal material coating process, etc., can solve the problems of poor working environment, long processing time and high energy consumption
Pending Publication Date: 2020-10-27
重庆盈锋不锈钢有限公司
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Problems solved by technology
[0003] The traditional blackening technology is carried out in alkaline sodium nitrite solution at 135-150°C, which has long processing time,
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Embodiment 1
[0049] A stainless steel blackening agent, comprising:
[0050] AR hydrochloric acid: the content is 100ml / L
[0051] Copper sulfate: the content is 5g / L,
[0052] Selenium dioxide: the content is 10g / L,
[0053] Nickel chloride: the content is 2g / L,
[0054] Boric acid: the content is 25g / L,
[0055] Potassium sodium tartrate: the content is 10g / L,
[0056] Deionized water was the balance.
Embodiment 2
[0058] A stainless steel blackening agent, comprising:
[0059] AR hydrochloric acid: the content is 120ml / L
[0060] Copper sulfate: the content is 5g / L,
[0061] Selenium dioxide: the content is 15g / L,
[0062] Nickel chloride: the content is 2g / L,
[0063] Boric acid: the content is 25g / L,
[0064] Potassium sodium tartrate: the content is 5g / L,
[0065] OP-10: the content is 0.5g / L,
[0066] Deionized water was the balance.
Embodiment 3
[0068] A stainless steel blackening agent, comprising:
[0069] AR hydrochloric acid: the content is 120ml / L
[0070] Copper sulfate: the content is 8g / L,
[0071] Selenium dioxide: the content is 10g / L,
[0072] Nickel chloride: the content is 2g / L,
[0073] Boric acid: the content is 25g / L,
[0074] Potassium sodium tartrate: the content is 15g / L,
[0075] OP-10: the content is 0.5g / L,
[0076] Deionized water was the balance.
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Abstract
The invention belongs to the technical field of stainless steel blackening, and particularly discloses a stainless steel blackening agent and a blackening treatment method. The stainless steel blackening agent comprises following raw materials including 100 ml/L-120 ml/L of hydrochloric acid with the concentration ranging from 30% to 36%, 5 g/L-8 g/L of copper sulfate, 10 g/L-15 g/L of selenium dioxide, 1 g/L-2 g/L of nickel chloride, 25 g/L of a stabilizer, 5 g/L-30 g/L of a complexing agent, 0-0.5 g/L of a surface active agent and the balance deionized water. The stainless steel blackening agent can blacken stainless steel under normal temperature, the blackening speed is high, the color is black, evenness is achieved, binding force is good, and no pungent smell is generated.
Description
technical field [0001] The invention belongs to the technical field of stainless steel blackening, and in particular relates to a stainless steel blackening agent and a blackening treatment method. Background technique [0002] Blackening treatment is a common method of chemical surface treatment. After blackening treatment, a layer of black oxide film will be formed on the surface of stainless steel, which has good corrosion resistance. The stainless steel plate treated with the blackening agent will oxidize and turn black in the air. It needs to be cleaned first, and then it will go through the processes of wire drawing, oil sealing, baking, cooling, and gluing to form the final product. [0003] The traditional blackening technology is carried out in alkaline sodium nitrite solution at 135-150°C, which has long processing time, high energy consumption, heavy pollution, low efficiency and poor working environment, which is extremely unfavorable to the operator's health. ...
Claims
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