Surface rust removal and rust prevention comprehensive treatment agent for steel core workpiece of rotor of large-scale motor and preparation method

A comprehensive treatment agent and workpiece surface technology, applied in the direction of metal material coating process, etc., can solve the problems affecting the performance of the motor rotor, affecting the bonding force of the spray coating, peeling off the paint layer, etc., to achieve environmental protection, improve adhesion, improve The effect of corrosion resistance

Inactive Publication Date: 2013-03-27
DALIAN SANDAAOKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the rust removal and anti-rust process of the surface of the steel core workpiece of the motor rotor is generally to immerse the workpiece in a tank, etc., but it is difficult to realize the large (Φ3.6m) motor rotor, resulting in frequent corrosion on the surface after treatment. The existence of rust will seriously affect the bonding force of the sprayed coating and cause the peeling of the paint layer, which will seriously affect the performance of the motor rotor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Raw materials and mass percentages are as follows: comprehensive phosphating treatment additive 10%, zinc nitrate 8%, citric acid 0.6%, ammonium dihydrogen phosphate 0.8%, ammonium hydrogen fluoride 0.1%, ammonium molybdate 1.5%, nickel sulfate hexahydrate 0.5% , JFC 0.5%, polyethylene glycol (M=600) 0.5% and water balance.

[0009] The preparation method is carried out according to the following steps: first add the calculated and weighed water into the reaction kettle, start the agitator, and control the rotation speed to 60 rpm, and then sequentially add the calculated and weighed comprehensive phosphating treatment additive, zinc nitrate , citric acid, ammonium dihydrogen phosphate, ammonium hydrogen fluoride, ammonium molybdate, nickel sulfate hexahydrate, JFC, and polyethylene glycol are slowly added to the reaction kettle in sequence, and each raw material needs to be stirred until fully dissolved, and finally continue to stir until The solution is light green tr...

Embodiment 2

[0012] The raw materials and production method are the same as in Example 1, and the mass percentages of the raw materials are as follows: comprehensive phosphating treatment additive 16%, zinc nitrate 1%, citric acid 1.6%, ammonium dihydrogen phosphate 0.1%, ammonium hydrogen fluoride 0.8%, molybdic acid Ammonium 0.1%, nickel sulfate hexahydrate 1.5%, JFC 0.1%, polyethylene glycol (M=600) 1.5% and water balance.

Embodiment 3

[0014] The raw materials and production method are the same as in Example 1, and the mass percentages of the raw materials are as follows: comprehensive phosphating treatment additive 13%, zinc nitrate 5%, citric acid 1.0%, ammonium dihydrogen phosphate 0.5%, ammonium hydrogen fluoride 0.4%, molybdic acid Ammonium 1.0%, nickel sulfate hexahydrate 1.0%, JFC 0.3%, polyethylene glycol (M=600) 1.0% and the balance of water.

[0015] When in use, add water to the embodiment 1, embodiment 2 or embodiment 3 of the present invention to prepare the working fluid according to the volume ratio of 1:1, manually use a rag to dip the working fluid to wipe the surface of the motor rotor steel core workpiece, and generate a rust after removing the rust. A thin layer of light gray zinc is formed into a film layer, and then the surface can be dried with hot air.

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PUM

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Abstract

The invention discloses a surface rust removal and rust prevention comprehensive treatment agent for a steel core workpiece of a rotor of a large-scale motor. The surface rust removal and rust prevention comprehensive treatment agent comprises the following components in percentage by weight: 10-16% of comprehensive phosphatization treatment auxiliary, 1-8% of zinc nitrate, 0.6-1.6% of citric acid, 0.1-0.8% of ammonium dihydrogen phosphate, 0.1-0.8% of ammonium hydrogen fluoride, 0.1-1.5% of ammonium molybdate, 0.5-1.5% of nickel sulfate hexahydrate, 0.1-0.5% of JFC, 0.5-1.5% of polyethylene glycol and the balance of water. The preparation method comprises the following steps: firstly adding water which is calculated and weighed into a reaction kettle, starting a stirrer, controlling the rotational speed at 60 rounds/minute, and then sequentially slowly adding the comprehensive phosphatization treatment auxiliary, zinc nitrate, citric acid, ammonium dihydrogen phosphate, ammonium hydrogen fluoride, ammonium molybdate, nickel sulfate hexahydrate, JFC and polyethylene glycol, which are calculated and weighed, into the reaction kettle, wherein each raw material needs to be stirred till full dissolution when being added; and finally continuing stirring till the solution is light green transparent liquid.

Description

technical field [0001] The invention relates to a metal conversion treatment agent and a preparation method, in particular to a large-scale motor rotor steel core which is easy to operate, is beneficial to environmental protection, can improve the adhesion between the workpiece surface and the sprayed coating, and can improve the corrosion resistance of the sprayed coating A preparation method of a rust-removing and anti-rust comprehensive treatment agent for workpiece surfaces. Background technique [0002] The surface of metal components is caused by oil stains, floating rust, heavy rust, oxide scales and welding high-temperature oxides. Therefore, before spraying and coating processes, the above-mentioned oil scales are required to be removed, and most of them are treated by phosphate conversion. Form a layer of phosphate conversion film with a certain roughness, porosity and adsorption on the surface to enhance the corrosion resistance of the workpiece surface and improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/44
Inventor 潘德顺黄文飞
Owner DALIAN SANDAAOKE CHEM
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