Title:
METHOD FOR PREPARING SPIRAL HEAT EXCHANGE TUBE OF STEAM GENERATOR OF HIGH TEMPERATURE GAS-COOLED REACTOR
Document Type and Number:
WIPO Patent Application WO/2023/168884
Kind Code:
A1
Abstract:
A method for preparing a spiral heat exchange tube of a steam generator of a high temperature gas-cooled reactor, comprising steps of: perforation and annealing of a pierced billet; pickling and inspection of the pierced billet; multi-pass cold rolling and heat treatment of an intermediate tube; cold drawing and heat treatment of a finished product; straightening and inspection; formation of a spiral tube; stress relief heat treatment and inspection. The spiral heat exchange tube prepared by the method has a long length, high dimensional accuracy and surface quality and excellent mechanical properties, and can meet use requirements of the steam generator of the high temperature gas-cooled reactor.
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Inventors:
ZHUANG JIANXIN (CN)
HAN MIN (CN)
XU WENJUN (CN)
WEI GANG (CN)
TANG JIE (CN)
HAN MIN (CN)
XU WENJUN (CN)
WEI GANG (CN)
TANG JIE (CN)
Application Number:
PCT/CN2022/107059
Publication Date:
September 14, 2023
Filing Date:
July 21, 2022
Export Citation:
Assignee:
JIANGSU YINHUAN PREC STEEL TUBE CO LTD (CN)
BAOYIN SPECIAL STEEL TUBE CO LTD (CN)
BAOYIN SPECIAL STEEL TUBE CO LTD (CN)
International Classes:
B21C37/12; B21C37/30; C21D1/00; C21D8/10
Foreign References:
| CN114632837A | 2022-06-17 | |||
| CN111636013A | 2020-09-08 | |||
| CN113245857A | 2021-08-13 | |||
| CN108746243A | 2018-11-06 | |||
| CN110394375A | 2019-11-01 | |||
| US20180187277A1 | 2018-07-05 | |||
| JPH1085877A | 1998-04-07 |
Other References:
GAO PEI: "Production of T22 Spiral Coil Tube for Steam Generator of HTGR", IRON AND STEEL, vol. 48, no. 2, 15 April 2019 (2019-04-15), pages 40 - 44, XP093090070
Attorney, Agent or Firm:
CHANGZHOU BAIYETENGFEI PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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