Antirust heat treatment technology for spare parts

A kind of parts and process technology, which is applied in the field of anti-rust heat treatment process of parts, can solve the problems of high energy consumption, poor uniformity of galvanized layer thickness, insufficient surface hardness and wear resistance, etc., achieve low processing cost and improve process efficiency Effect

Inactive Publication Date: 2016-06-08
CHONGQING GUIKUN MACHINERY CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

At present, the most effective industrial corrosion method for steel parts, the traditional hot-dip galvanizing process has high ene

Method used

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Examples

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Example Embodiment

[0016] In the following, the present invention will be further described in conjunction with the embodiments, and the operation steps are as follows:

[0017] (1) Part pretreatment: inspect the parts to remove burrs, iron filings, grease and other dirt on the surface of the parts;

[0018] (2) Degreasing: Use water-based metal degreasing cleaning agent to degrease the parts until the parts are completely wetted;

[0019] (3) Pickling: Place the pipe in a pickling tank to soak and remove the oxide scale on the surface of the steel pipe. The concentration of the pickling solution is 20-22% HCl, and then corrosion inhibitors are added. The temperature is controlled at 21-22°C and the pickling time is controlled. In 20-30 minutes;

[0020] (4) Rinsing: Add 0.1%-0.2% citric acid to clean water, and rinse with water;

[0021] (5) Immersion flux: put the parts into the flux tank to soak the flux, the flux is a mixed aqueous solution of ammonium chloride and zinc chloride, the concentration of...

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Abstract

The invention discloses an antirust heat treatment technology for spare parts. The antirust heat treatment technology comprises the following steps of pretreating the spare parts; performing degreasing; performing pickling; performing rinsing; performing soaking in flux; performing drying and preheating; performing hot galvanizing; performing passivating; performing cooling; and performing inspection and trimming. The antirust heat treatment technology for the spare parts, provided by the invention, has the advantages that the treatment fees are low, the treated spare parts are durable, the technological treatment efficiency is improved, and the quality of workpieces is improved.

Description

technical field [0001] The invention relates to the field of heat treatment, in particular to an antirust heat treatment process for parts. Background technique [0002] Mechanical parts are basically made of iron or steel. When iron or steel comes into contact with carbon dioxide in humid air, the surface will be surrounded by a layer of acid electrolyte solution. Since steel contains a small amount of carbon, when the surface is covered with When the weakly acidic electrolyte solution is used, several primary batteries are formed on the surface. Iron is the negative electrode and carbon is the positive electrode. As the negative electrode, iron will lose electrons and be oxidized into ferric hydroxide precipitation. Carbon dioxide in the air reacts with ferric hydroxide to form red Brown basic iron carbonate, while oxygen, carbon dioxide and water vapor can continue to "attack" in, so the rust becomes thicker and thicker until all the steel is rusted. In order to prevent ...

Claims

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Application Information

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IPC IPC(8): C23C2/06C23C2/02
Inventor 钟传梅
Owner CHONGQING GUIKUN MACHINERY CO LTD
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