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Production method for corrugated pipe blank extremely-thin wall stainless steel seamless steel pipe for nuclear power

A technology for seamless steel pipes and production methods, applied in the field of seamless steel pipes, can solve problems such as production hazards and low production efficiency, achieve satisfactory use effects, improve enterprise competitiveness, and achieve fast and convenient production processes

Inactive Publication Date: 2017-02-08
常州市联谊特种不锈钢管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of low production efficiency of existing corrugated pipes and dangerous production, the present invention provides a production method of extremely thin-walled stainless steel seamless steel pipes for nuclear power corrugated pipe blanks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A production method of a very thin-walled stainless steel seamless steel pipe for nuclear power bellows blank, the steps are: round bar inspection—perforation—pickling—polishing—pipe billet inspection—cold rolling—degreasing—heat treatment—straightening and cutting—pickling - cold drawing - degreasing - heat treatment - straightening and cutting - pickling - polishing - inspection of semi-finished products - cold rolling - degreasing - heat treatment - straightening and cutting - pickling - performance testing - finished product inspection - marking - packaging and storage.

[0013] According to another embodiment of the present invention, it further includes that the temperature of the heat treatment is 800° C. and the time is 2 hours.

[0014] According to another embodiment of the present invention, it further includes that nitric acid is used for pickling with a concentration of 70%.

Embodiment 2

[0016] A production method of a very thin-walled stainless steel seamless steel pipe for nuclear power bellows blank, the steps are: round bar inspection—perforation—pickling—polishing—pipe billet inspection—cold rolling—degreasing—heat treatment—straightening and cutting—pickling - cold drawing - degreasing - heat treatment - straightening and cutting - pickling - polishing - inspection of semi-finished products - cold rolling - degreasing - heat treatment - straightening and cutting - pickling - performance testing - finished product inspection - marking - packaging and storage.

[0017] According to another embodiment of the present invention, it further includes that the temperature of the heat treatment is 1200° C. and the time is 4 hours.

[0018] According to another embodiment of the present invention, it further includes that nitric acid is used for pickling with a concentration of 85%.

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Abstract

The invention relates to the technical field of seamless steel pipes, and in particular, relates to a production method for a corrugated pipe blank extremely-thin wall stainless steel seamless steel pipe for nuclear power. The production method for the corrugated pipe blank extremely-thin wall stainless steel seamless steel pipe for nuclear power comprises the steps: round rod checking, punching, pickling, polishing, pipe blank checking, cold rolling, deoiling, heat treatment, straightening and cutting, pickling, cold drawing, deoiling, heat treatment, straightening and cutting, pickling, polishing, semi-finished product inspection, cold rolling, deoiling, heat treatment, straightening and cutting, pickling, performance testing, finished product inspection, identification, and packing and warehousing. The corrugated pipe produced by the method has relatively small thickness, the needs of production are met, the production process is fast and convenient, no toxic gases appear in the production process, the use effect of the produced corrugated pipe meets practical needs, and the competitiveness of enterprises is improved.

Description

technical field [0001] The invention relates to the technical field of seamless steel pipes, in particular to a production method of an extremely thin-walled stainless steel seamless steel pipe for nuclear power corrugated pipe blanks. Background technique [0002] The wall thickness of the current seamless steel pipe is relatively thick, which cannot meet the demand in the process of use. At the same time, the processing efficiency of the pipe is low and the production is difficult, resulting in low production efficiency. Harmful substances will also appear during the production process, which affects the health of processing personnel. Contents of the invention [0003] In order to overcome the problem of low production efficiency of existing corrugated pipes and dangerous production, the present invention provides a production method of extremely thin-walled stainless steel seamless steel pipes for nuclear power corrugated pipe blanks. [0004] The technical scheme adop...

Claims

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Application Information

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IPC IPC(8): B21C37/06
Inventor 贾松
Owner 常州市联谊特种不锈钢管有限公司
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