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Electrical heated tube roller burnishing treatment process capable of effectively cleaning skin scale of welding electrical heated tube

A treatment process and electric heating tube technology, which is applied in the direction of surface polishing machine tools, metal material coating process, manufacturing tools, etc., can solve the problems of easy rust on the surface of electrothermal light, welding scale on the metal surface, and unusability, etc., and reach the surface Brightness, extended service life, and quality-enhancing effects

Inactive Publication Date: 2014-12-24
JIANGSU SHUNFA ELECTRIC HEATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electric heating tube is a workpiece that has been working in a high-temperature and high-humidity environment for a long time. There is welding scale on the metal surface during manufacture. If the surface is not cleaned, it can be directly rolled and plated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0015] The specific steps of the electrothermal tube rolling treatment process of the present embodiment are as follows:

[0016] A. Treatment before rolling:

[0017] Put 50 pieces of electric heating tubes made by welding and forming process into 65°C white steel aqueous solution for 12 minutes, then soak them in concentrated nitric acid solution for 5 seconds, then rinse with clean water, and clean the surface. After treatment, the surface of the electric heating tube is white in appearance, and the welding scale can be brushed off with a toothbrush.

[0018] The white steel aqueous solution is made of 12% white steel and clean water in a mass ratio of 14:100. The composition of molten steel is 30wt% phosphoric acid, 10wt% nitric acid, 15wt% hydrochloric acid, and the rest is water. Concentrated nitric acid solution is prepared from 70% nitric acid and water in a mass ratio of 70:30.

[0019] B. Tumbler Treatment and Cleaning:

[0020] Put 400 pieces of electric heati...

Embodiment 2）

[0025] The specific steps of the electrothermal tube rolling treatment process of the present embodiment are as follows:

[0026] A. Treatment before rolling:

[0027] Put 50 pieces of electric heating tubes made by welding forming process into 50°C white steel aqueous solution for 6 minutes, then soak them in concentrated nitric acid solution for 5 seconds, then rinse with clean water, and clean the surface.

[0028] The white steel aqueous solution is made of white steel with a concentration of 12% and clean water in a mass ratio of 12:100. Concentrated nitric acid solution is prepared from 70% nitric acid and water at a mass ratio of 65:35.

[0029] B. Tumbler Treatment and Cleaning:

[0030] Put 400 pieces of electric heating tubes that have been treated before rolling into the rolling machine, add steel balls and clean water to completely cover the electric heating tubes. Add 160g of polishing agent and 80g of citric acid powder before tumbling, and tumbling for 12 m...

Embodiment 3）

[0035] The specific steps of the electrothermal tube rolling treatment process of the present embodiment are as follows:

[0036] A. Treatment before rolling:

[0037] Put 50 pieces of electric heating tubes made by welding forming process into 80°C white steel aqueous solution for 8 minutes, then soak them in concentrated nitric acid solution for 5 seconds, then rinse with clean water, and clean the surface.

[0038] The white steel aqueous solution is made of 12% white steel and clean water in a mass ratio of 16:100. Concentrated nitric acid solution is prepared from 70% nitric acid and water in a mass ratio of 75:25.

[0039] B. Tumbler Treatment and Cleaning:

[0040] Put 400 pieces of electric heating tubes that have been treated before rolling into the rolling machine, add steel balls and clean water to completely cover the electric heating tubes. Add 200g of polishing agent and 120g of citric acid powder before tumbling, and tumbling for 18 minutes. When tumbling i...

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PUM

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Abstract

The invention relates to an electrical heated tube roller burnishing treatment process, which comprises the following steps of A, soaking an electrical heated tube into pure molten steel solution with the temperature of 65 DEG C for 12min, soaking in concentrated nitric acid solution for 5s, flushing, and cleaning the surface; B, carrying out burnishing treatment on the electrical heated tube subjected to burnishing pretreatment, soaking the burnished electrical heated tube into diluted citric acid solution with the temperature of 80 DEG C and the concentration of 5 percent for 5min, and flushing; C, carrying out passivating treatment on the electrical heated tube, and drying; during the passivating treatment, soaking the electrical heated tube into diluted nitric acid solution for 10s, soaking into corrosion inhibition solution for 10s, and filtering and flushing, wherein the corrosion inhibition solution is prepared by mixing potassium iodide, benzotriazole and water according to the mass ratio of 0.1:60:100. According to the process provided by the invention, welding scale, spots, stains and rusts on the surface of the electrical heated tube can be effectively cleaned, and the quality of plating the electrical heated tube is improved.

Description

[0001] This application is a divisional application, the application number of the original application: 201210481561.9, the application date: 2012-11-23, the name of the invention: electric heating tube rolling burnishing treatment process. technical field [0002] The invention relates to a method for chemically treating metal surfaces. Background technique [0003] Metal materials need to be tumbled before being plated. Rolling treatment is a process in which batches of parts and grinding media are rotated in a drum at a low speed, and the relative movement of parts and abrasives is used for finishing treatment. Wet machining grinding media commonly used in the tumbling process contain abrasives, chemical accelerators (brighteners) and water. Good rolling treatment can effectively guarantee the quality of plating and prevent metal materials from being corroded. The electric heating tube is a workpiece that has been working in a high-temperature and high-humidity environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B31/10C23G1/02C23C22/48C23C22/68
CPCB24B31/10C23C22/48C23C22/68C23G1/02
Inventor 沙国伟
Owner JIANGSU SHUNFA ELECTRIC HEATING MATERIAL