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Corrosion-resistant polishing treatment process for stainless steel pipe

A technology of stainless steel pipe and processing technology, which is applied in the direction of grinding/polishing equipment, machine tools for surface polishing, manufacturing tools, etc. It can solve the problems that it is difficult to meet the long-term use requirements and the nickel layer is easy to fall off, and achieve excellent polishing effect. The effect of improving high temperature mechanical properties and improving service life

Active Publication Date: 2021-06-01
SUZHOU DIHANG DEFENSE FACILITIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this application can improve the corrosion resistance of the surface of stainless steel pipes by nickel plating, the nickel layer is easy to fall off with use, and it is difficult to meet the long-term use requirements

Method used

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  • Corrosion-resistant polishing treatment process for stainless steel pipe
  • Corrosion-resistant polishing treatment process for stainless steel pipe
  • Corrosion-resistant polishing treatment process for stainless steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A corrosion-resistant polishing treatment process for stainless steel pipes, comprising the steps of:

[0054] The first step is to select CN1515 austenitic stainless steel pipes for cold rolling treatment; cold rolling treatment is carried out in a conventional way according to the steel pipe size requirements;

[0055] The second step is to solution anneal the cold-rolled pipe at 1060°C for 15 minutes;

[0056] The third step is to process the pipe obtained in the previous step with 7% deformation by cold drawing machine for production, and then recrystallize and anneal at 1060°C for 10 minutes;

[0057] The fourth step is to place the steel pipe obtained in the previous step in the steel pipe polishing equipment. Specifically, pass the steel pipe through the positioning cylinder 2307 and contact the disc 2201, and move the rocker 2308 along the circumferential direction until three Z-shaped blocks 2303 clamps the steel pipe, turns on the first motor and the second m...

Embodiment 2

[0059] A corrosion-resistant polishing treatment process for stainless steel pipes, comprising the steps of:

[0060] The first step is to select CN1515 austenitic stainless steel pipes for cold rolling treatment; cold rolling treatment is carried out in a conventional way according to the steel pipe size requirements;

[0061] The second step is to solution anneal the cold-rolled pipe at 1060°C for 15 minutes;

[0062] The third step is to process the pipe obtained in the previous step with 7% deformation by cold drawing machine for production, and then recrystallize and anneal at 1080°C for 10 minutes;

[0063] The fourth step is to place the steel pipe obtained in the previous step in the steel pipe polishing equipment. Specifically, pass the steel pipe through the positioning cylinder 2307 and contact the disc 2201, and move the rocker 2308 along the circumferential direction until three Z-shaped blocks 2303 clamps the steel pipe, turns on the first motor and the second m...

Embodiment 3

[0065] A corrosion-resistant polishing treatment process for stainless steel pipes, comprising the steps of:

[0066] The first step is to select CN1515 austenitic stainless steel pipes for cold rolling treatment; cold rolling treatment is carried out in a conventional way according to the steel pipe size requirements;

[0067] The second step is to solution anneal the cold-rolled pipe at 1060°C for 15 minutes;

[0068] The third step is to process the pipe obtained in the previous step with 7% deformation by cold drawing machine for production, and then recrystallize and anneal at 1100°C for 10 minutes;

[0069] The fourth step is to place the steel pipe obtained in the previous step in the steel pipe polishing equipment. Specifically, pass the steel pipe through the positioning cylinder 2307 and contact the disc 2201, and move the rocker 2308 along the circumferential direction until three Z-shaped blocks 2303 clamps the steel pipe, turns on the first motor and the second m...

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Abstract

The invention discloses a corrosion-resistant polishing treatment process for a stainless steel pipe. The corrosion-resistant polishing treatment process comprises the following steps: step 1, carrying out cold rolling treatment; step 2, carrying out solution annealing on the pipe subjected to cold rolling treatment for 15 min at the temperature of 1,060 DEG C; step 3, machining by a cold-drawing machine; and step 4, placing the steel pipe obtained in the previous step on steel pipe polishing equipment for polishing treatment. The cold-drawing machine machining process is carried out before polishing treatment, so that the steel pipe can be recrystallized, and the grain boundary proportion of a steel pipe material is increased; the steel pipe polishing equipment is adopted for polishing treatment, so that the steel pipe can be fixed, and axially moves while rotating; polishing wheels continuously rotate, the whole process is automatic, and relative movement is large, so that the polishing force can be uniform, the polishing quality of the steel pipe is improved; and the corrosion resistance can be enhanced by improving the polishing quality, so that the polishing treatment process is suitable for various environments, the service life can be prolonged, and the long-term use requirement is met.

Description

technical field [0001] The invention belongs to the technical field of stainless steel pipe processing, and in particular relates to a corrosion-resistant polishing process for stainless steel pipes. Background technique [0002] Stainless steel pipe is a hollow long strip of steel, which is widely used as a pipeline for transporting fluids, such as oil, natural gas, water, gas, steam, etc. In addition, when bending and torsional strength are the same, the weight is lighter, so it is It is widely used in the manufacture of mechanical parts and engineering structures, and has a wide range of applications. Existing stainless steel pipes have extremely high requirements on corrosion resistance because they are often used in industries such as oil drilling, smelting and transportation. [0003] The Chinese invention patent with the patent number CN201310432945.6 discloses a stainless steel pipe with a nickel-plated layer. The coating process is carried out on the surface of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B29/08B24B27/00B24B47/12B24B47/20B21C37/30
CPCB24B29/08B24B27/0076B24B47/12B24B47/20B21C37/30
Inventor 李祥周张雪凌黄忠恒
Owner SUZHOU DIHANG DEFENSE FACILITIES CO LTD
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