Corrosion-resistant seamless steel tube processing process

Abstract

The invention provides a corrosion-resistant seamless steel tube processing process. The processing process comprises the following steps: performing cleaning and impurity-removal work on blank, performing flaw detection on the blank, putting qualified blank into a next process, shearing or repairing the defects of unqualified blank; heating and forming the blank at a temperature of 800-1300 DEG C, ensuring the temperature to float within 50 DEG C, making temperature difference between inside and outside of the blank not greater than 30 DEG C, processing and reshaping the steel tube through a hot-rolling process, increasing a perforating and extending temperature by 50-80 DEG C during hot-rolling, additionally arranging a transparent protective layer outside, performing sizing treatment after extending work is ended, performing cooling treatment after sizing is ended, finishing after cooling, removing defects and deficiencies in a processing process, performing secondary heating, performing secondary processing, and finishing after secondary processing is ended. The corrosion-resistant seamless steel tube processing process has the beneficial effects of simplifying the process and strengthening sensory corrosion resistance.

Description

technical field [0001] The invention belongs to the field of steel pipes, in particular to a process for processing corrosion-resistant seamless steel pipes. Background technique [0002] Today's steel pipes often need to be used in harsh weather environments, especially in the face of rainy and snowy weather. The service life of the steel ensures good performance, but ordinary corrosion-resistant steel pipes are laid with a protective layer on the outside or inside. Although the protective layer can prevent corrosion, the damage to the protective layer will be accelerated when exposed to the air and harsh environments all the year round. Many, the external protection is only the first layer of protection, the processing method of the steel pipe is changed and optimized to strengthen the tolerance of the steel pipe itself to the external environment, so as to provide protection when the protective layer is damaged, and give enough time for maintenance and repair to avoid Th...

AI Technical Summary

Problems solved by technology

[0002] Today's steel pipes often need to be used in harsh weather environments, especially in the face of rainy and snowy weather. The service life of the steel ensures good performance, but ordinary corrosion-resistant steel pipes are laid with a protective layer on the outside or inside. Although the protective layer can prevent corrosion, the damage to the protective layer will be accelerated when exposed to the air and harsh environments all the year round. Many, the external protection is only the first layer of protection, the processing method of the steel pipe is changed and optimized to strengthen the tolerance of the steel pipe itself to the external environment, so as to provide protection when the protective layer is damaged, and give enough time for maintenance and repair to avoid The problem was discovered after the steel pipe ruptured