Title:
METHOD FOR MANUFACTURING EQUAL-HARDNESS CR5 SUPPORT ROLL
Document Type and Number:
WIPO Patent Application WO/2022/126973
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for manufacturing an equal-hardness Cr5 support roll. The method comprises the following steps: 1) preparing steel raw materials according to chemical components and weight percentage contents in a Cr5 support roll material, and preparing a steel ingot according to a smelting procedure production process; 2) preparing a roll blank from the steel ingot according to a forging procedure production process; 3) conducting heat treatment on the roll blank; and 4) machining and detecting the roll blank to obtain an equal-hardness forged steel support roll. According to the present invention, the problems of rapid reduction in hardness, abrasion resistance and contact fatigue of a conventional forged steel support roll in the middle and later periods of use are solved, and the comprehensive use period and the service life of the support roll are prolonged.
Inventors:
LIU DI (CN)
YANG YUDONG (CN)
HAN WEIGUO (CN)
SU JUNXIN (CN)
YANG YUDONG (CN)
HAN WEIGUO (CN)
SU JUNXIN (CN)
Application Number:
PCT/CN2021/090470
Publication Date:
June 23, 2022
Filing Date:
April 28, 2021
Export Citation:
Assignee:
SINOSTEEL XINGTAI MACHINERY & MILL ROLL CO LTD (CN)
International Classes:
C21D1/18; C22C38/44; C21D8/00; C22C33/04; C22C38/02; C22C38/04; C22C38/46
Foreign References:
| CN102417965A | 2012-04-18 | |||
| CN102634738A | 2012-08-15 | |||
| CN108277443A | 2018-07-13 | |||
| CN103397267A | 2013-11-20 | |||
| JPH08269626A | 1996-10-15 |
Other References:
ZHAO XICHUN: "Research on Cr5-Type Forged Steel for Backup Roll", HEAT TREATMENT OF METALS, vol. 28, no. 6, 25 June 2003 (2003-06-25), JP , pages 26 - 28, XP055944403, ISSN: 0254-6051, DOI: 10.13251/j.issn.0254-6051.2003.06.008
Attorney, Agent or Firm:
SHIJIAZHUANG ZHONGZHIHUAQING INTELLECTUAL PROPERTY OFFICE (SPECIAL GENERAL PARTNERSHIP) (CN)
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