Title:
DIE STEEL HAVING HIGH THERMAL DIFFUSION COEFFICIENT, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/137842
Kind Code:
A1
Abstract:
A die steel having a high thermal diffusion coefficient, and a preparation method therefor. The die steel is prepared from the following components, in percentage by mass: C: 0.30-0.40%, Si: 0.05-0.10%, Mo: 2.50-3.40%, Nb: 0.01-0.05%, Co: 0.30-0.50%, RE: 0.01-0.05% and the balance of Fe and inevitable impurities; and furthermore, in the die steel, P≤0.15%, and S≤0.025%. The preparation method for the die steel comprises the process steps of smelting, electroslag remelting, electroslag ingot annealing, forging, spheroidizing annealing, quenching and tempering which are performed in sequence. The die steel having an ultrahigh thermal conductivity can be obtained by adopting an appropriate proportion of chemical element components and reasonable process arrangement, and a die machined thereby has both good high-temperature performance and excellent comprehensive mechanical performance.
Inventors:
CAO ZHEN (CN)
LI SHUANG (CN)
WANG ZHEN (CN)
LIU LONG (CN)
ZHAO LULU (CN)
LI SHUANG (CN)
WANG ZHEN (CN)
LIU LONG (CN)
ZHAO LULU (CN)
Application Number:
PCT/CN2022/079949
Publication Date:
July 27, 2023
Filing Date:
March 09, 2022
Export Citation:
Assignee:
HEBEI VOCATIONAL UNIV OF INDUSTRY AND TECHNOLOGY (CN)
International Classes:
C22C38/02; C21D1/18; C21D1/26; C21D1/32; C21D6/00; C21D8/00; C22C33/04; C22C38/10; C22C38/12
Foreign References:
| CN101302599A | 2008-11-12 | |||
| CN111850393A | 2020-10-30 | |||
| CN106566997A | 2017-04-19 | |||
| CN106544592A | 2017-03-29 | |||
| CN101709428A | 2010-05-19 | |||
| CN104404357A | 2015-03-11 | |||
| CN107488813A | 2017-12-19 | |||
| CN110055464A | 2019-07-26 | |||
| US11180820B1 | 2021-11-23 | |||
| JP2014508218A | 2014-04-03 |
Attorney, Agent or Firm:
SHIJIAZHUANG XUCHANG INTELLECTUAL PROPERTY AGENCY OFFICE (LIMITED LIABILITY PARTNERSHIP) (CN)
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