NON-MAGNETIC HIGH-STRENGTH STAINLESS STEEL PROCESSED ARTICLE, METHOD FOR MANUFACTURING SAME, AND DEVICE FOR MANUFACTURING SAME

WIPO Patent Application WO/2018/143113

A1

Provided are a device and method for processing a high-strength two-phase-structured (austenite/ferrite) stainless steel material (SUS329JI), whereby processing-induced martensitic transformation of an austenitic stainless steel material (SUS304) is prevented and a high-hardness non-magnetic small precise component having excellent corrosion resistance and mechanical properties is provided with good product yield. The present invention is: an automatic continuous forging device provided with a forging mechanism part comprising a plurality of temperature-controlled dies, the automatic continuous forging device characterized in that the plastic deformation temperature of a metal material to be processed is maintained at 170°C to 400°C and temperature fluctuation is maintained at 30°C or less in the forging mechanism part comprising temperature-controlled dies; a non-magnetic high-strength stainless steel processed article obtained using the device; and a method for manufacturing the same. A temperature-controlled heat-insulating mechanism part may also be provided in the forging mechanism part comprising temperature-controlled dies.

TERAKATA YASUO (JP)
IWATA MASAHIRO (JP)
YAMADA RYOUICHI (JP)
MATSUDA TOMOKO (JP)
TAMAI HIROYASU (JP)
IMAOKA MUTSUHARU (JP)
TANAKA TOSHIYUKI (JP)
TSUKANE RYO (JP)

PCT/JP2018/002653

August 09, 2018

January 29, 2018

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TERAKATA MFG CO LTD (JP)
TOTTORI INSTITUTE OF INDUSTRIAL TECH (JP)

B21K29/00; B21J5/00; B21J13/02; B21J17/02

JP2010201496A	2010-09-16
JP2007136533A	2007-06-07
JP2010151929A	2010-07-08
JP2005200674A	2005-07-28

SHIMODA Kazuhiro (JP)

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