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Title:
METHOD FOR PREPARING 1CR25TI HIGH-CHROMIUM FERRITE STAINLESS STEEL SEAMLESS TUBE
Document Type and Number:
WIPO Patent Application WO/2019/144584
Kind Code:
A1
Abstract:
A method for preparing a 1Cr25Ti high-chromium ferrite stainless steel seamless pipe, comprising steps of tube blank heating, punching, finishing, cold drawing, thermal treatment, refinishing, and finished tube inspection, wherein cold drawing comprises: first performing low-temperature baking on a tubular billet obtained in the finishing step to obtain a tubular billet to be cold-drawn; then performing low-speed small-deformation cold drawing on the tubular billet to be cold-drawn; entering cold drawing of the next cycle in the same manner after cold drawing is completed until the wall thickness required by a process is met, and then obtaining a tube to be subjected to thermal treatment.

Inventors:
WU, Zhenhuan (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
JIN, Renming (Huaye Rd 36#, DongbangChangshu, Suzhou, Jiangsu 0,CHANGSH, SUZHOU Jiangsu 215500, 215500, CN)
WANG, Xunian (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
LU, Yalin (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
LIU, Kai (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
XIE, Li (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
TAO, Yuwen (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
BEI, Lei (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
Application Number:
CN2018/096740
Publication Date:
August 01, 2019
Filing Date:
July 24, 2018
Export Citation:
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Assignee:
SUZHOU GOLDEN-WAY STEEL TUBE CO., LTD (Huaye Rd 36#, DongbangChangsh, Suzhou Jiangsu 0, 215500, CN)
International Classes:
B21C37/06; B21B19/04; C22C38/18; C22C38/02; C22C38/04; C22C38/28
Attorney, Agent or Firm:
JW IP LAW FIRM (Room 701, Floor 7Building A5, No. 14 Courtyard, Jiuxianqiao Road,Chaoyang District, Beijing 5, 100015, CN)
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