Stainless steel passivating technique

A stainless steel and process technology, which is applied in the field of stainless steel passivation process, can solve the problems of low production efficiency, no unified standard, and low product market competitiveness, and achieve the goal of improving work efficiency, simple process steps, and eliminating repetitive processes Effect

Inactive Publication Date: 2016-06-15
CHONGQING JIEWEI DIE & MOLD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the stainless steel passivation process is relatively complicated, and there is no unified specification and standard, resulting in uneven quality of passivated stainless steel, and many repeated processes also make the production efficiency low, increase the labor burden of workers, and make the quality of the product The market is not competitive
For some operators who have just entered the industry, there is no clear method and process, resulting in frequent mistakes and omissions during operation, and may even cause serious consequences

Method used

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Embodiment Construction

[0014] The technical solution disclosed by the present invention is a stainless steel passivation process, which is characterized in that it includes the following steps: degreasing: oil and rust must be removed before processing; → water: clean the degreasing agent;

[0015] →Activation: KM0206 is used as the activation solution. For passivation of parts that have undergone machining processes such as welding, rolling or heat treatment, pickling should be carried out beforehand to remove the scale to expose the metal matrix;

[0016] →Water: Clean the activation solution on the surface of the workpiece;

[0017] →Passivation: soak in stainless steel passivation solution at room temperature for more than 30 minutes, 60 minutes is recommended;

[0018] →Water: rinse the passivation solution remaining on the surface of the workpiece;

[0019] → Neutralization: Use 5% caustic soda to neutralize;

[0020] →Water: rinse the neutralizing solution remaining on the surface of the wo...

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PUM

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Abstract

The invention discloses a stainless steel passivating technique. The stainless steel passivating technique comprises the following steps that deoiling is conducted, and deoiling and rust removal are conducted before processing; rinsing is conducted, and a deoiling agent is cleaned away; activating is conducted, KM0206 serves as activating liquid, and parts subjected to machining such as welding or rolling or heat treatment are subjected to acid pickling before passivating so that oxide skin can be completely removed and metallic matrices can be exposed; rinsing is conducted, and the activating liquid on the surfaces of the parts is cleaned away; passivating is conducted, the parts are soaked in stainless steel passivating liquid for over 30 minutes at the normal temperature, and preferably, soaking is conducted for 60 minutes; rinsing is conducted, the passivating liquid left on the surfaces of the workpieces is cleaned away; neutralizing is conducted, and caustic soda flakes with the concentration being 5% are used for neutralizing; rinsing is conducted, and neutralizing liquid left on the surfaces of the workpieces is cleaned away; pure water is put into use, and due to the fact that impurities are contained in ordinary tap water, impurities and water stains can be removed through the pure water; and drying is conducted, and the workpieces are dried through a drying oven at the temperature being lower than 180 DEG C or aired.

Description

technical field [0001] The present invention relates to one, especially relates to one. Background technique [0002] At present, the stainless steel passivation process is relatively complicated, and there is no unified specification and standard, resulting in uneven quality of passivated stainless steel, and many repeated processes also make the production efficiency low, increase the labor burden of workers, and make the product quality The market is not very competitive. For some operators who have just entered the industry, there is no clear method and process, resulting in frequent mistakes and omissions during operation, and may even cause serious consequences. Contents of the invention [0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a stainless steel passivation process, which has simple steps, eliminates many repetitive processes, and improves work efficiency. [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/73
Inventor 曾尚怀
Owner CHONGQING JIEWEI DIE & MOLD
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