Method for manufacturing low-carbon resisto seamless stainless steel tubes

Abstract

The invention discloses a method for manufacturing low-carbon resisto seamless stainless steel tubes. The method is used for manufacturing all-austenitic low-carbon resisto seamless stainless steel tubes, and includes steps of (1) checking a blank at first; (2) pickling the checked blank; (3) realizing polishing, opening trimming, cold rolling and oil removal for the pickled blank; (4) judging whether the blank meets requirements of a finished product or not, and performing finished product solid solution thermal treatment, straightening, finished product fixed-length cutting and finished product pickling if the blank meets the requirements of the finished product; (5) performing intermediate product solid solution thermal treatment, straightening, fixed-length cutting, and pickling and repeating the step (3) if the blank does not meet the requirements of the finished product; and (6) finally checking, spray-marking, packaging and weighing the finished product and then delivering the finished product out of a warehouse. By the aid of the method, corrosion resistance of the surfaces of the seamless steel tubes is increased, performance standard is improved, manufacturing cost is reduced, and a work procedure is simple.

Description

technical field [0001] The invention relates to a method for manufacturing a stainless steel seamless steel pipe, in particular to a method for manufacturing a fully austenitic low-carbon nickel-iron-chromium alloy stainless steel seamless pipe. Background technique [0002] Stainless steel seamless steel pipe is a long strip of steel with a hollow section and no seams around it. It is a steel pipe that is resistant to weak corrosive media such as air, steam, and water, and chemically corrosive media such as acids, alkalis, and salts. Also known as stainless acid-resistant steel pipe, with the implementation of my country's reform and opening up policy, the national economy has achieved rapid growth, and a large number of urban residences, public buildings and tourist facilities have been built, which puts forward new requirements for hot water supply and domestic water supply. Especially water problems, people more and more valued, pleas also driving forward. Galvanized s...

AI Technical Summary

Problems solved by technology

Due to the comprehensive and good comprehensive performance of austenitic stainless steel, it has been widely used in all walks of life, which makes the traditional austenitic stainless steel seamless steel pipe unable to meet the requirements. The traditional seamless steel pipe production method is completely Austenitic low-carbon nickel-iron-chromium alloy stainless steel seamless steel pipe not only wastes resources, but also complicates the process

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