Title:
PROCESSING RAW MATERIAL MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2022159863
Kind Code:
A
Abstract:
To provide a processing raw material manufacturing method that can suppress deterioration of mechanical properties due to porosity.SOLUTION: A processing raw material manufacturing method comprises: a depression process in which a work-piece W obtained from an ingot is depressed from one direction in a hot state; and a heat treatment process in which the work-piece W is heated and held at a temperature at which an internal vacancy of the work-piece W interior blocked in the depression process is capable of crimping by diffusion after the depression process.SELECTED DRAWING: Figure 1
Inventors:
TSUJI TOMOKI
WASHIMI YOSHINORI
WASHIMI YOSHINORI
Application Number:
JP2021064307A
Publication Date:
October 18, 2022
Filing Date:
April 05, 2021
Export Citation:
Assignee:
DAIDO STEEL CO LTD
International Classes:
B21J1/02; B22D29/00
Attorney, Agent or Firm:
Akio Iida
Michiko Ema
Isao Namagawa
Michiko Ema
Isao Namagawa
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