Title:
METHOD FOR PRODUCING HOT-FORGED MEMBER
Document Type and Number:
WIPO Patent Application WO/2023/037667
Kind Code:
A1
Abstract:
Provided is a method for producing a hot-forged member that enables efficient hot forging while preventing defects such as cracks even when a hard-to-work alloy is used as the hot-forging material. This method for producing a hot-forged member includes a heating step in which an unheated material to be subjected to hot-forging is heated to a hot-forging temperature in a heating furnace, a heat-resistant insulation material bonding step in which a heat-resistant insulation material is bonded to at least a portion of the forging material surface removed from the heating furnace, thereby forming a hot-forging material, and a hot-forging step in which any of a mold, an anvil, and a tool is used to compress all or a portion of the hot-forging material into a prescribed shape, and includes a glass lubricant coating step in which at least the portion of the surface of the unheated material to which the heat-resistant insulation material has been bonded is coated with a glass lubricant, wherein the glass lubricant has a viscosity of 102-107 Pa·s in the heat-resistant insulation material bonding step.
Inventors:
YAMASHITA YOJI (JP)
AOKI CHUYA (JP)
KOBAYASHI SHINICHI (JP)
AOKI CHUYA (JP)
KOBAYASHI SHINICHI (JP)
Application Number:
PCT/JP2022/021761
Publication Date:
March 16, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
PROTERIAL LTD (JP)
International Classes:
B21J3/00; B21J1/02; B21J5/00
Domestic Patent References:
| WO2021182606A1 | 2021-09-16 |
Foreign References:
| JP2014210288A | 2014-11-13 | |||
| JP2018164925A | 2018-10-25 | |||
| JP2017148817A | 2017-08-31 | |||
| JPH02224841A | 1990-09-06 | |||
| JP2014508857A | 2014-04-10 | |||
| JP2014508857A | 2014-04-10 |
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