HOT STAMP MOULDED BODY

WIPO Patent Application WO/2018/151330

A1

Provided is a hot stamp moulded body which is characterized by: including a plate thickness central portion, and a surface layer provided to one or both sides of the plate thickness central portion; and further including intermediate layers formed next to and between the plate thickness central portion and the respective surface layers. The hot stamp moulded body is further characterized in that: the plate thickness central portion has a prescribed composition; the hardness of the plate thickness central portion is at least 500 Hv, but not more than 800 Hv; the variation ΔH1 in hardness in the surface layers in the plate thickness direction is at least 10 Hv, but less than 200 Hv; and the variation ΔH2 in hardness in the intermediate layers in the plate thickness direction is at least 50 Hv, but less than 200 Hv.

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JP4546713	Final products of high-strength electrical steel sheets with excellent magnetic properties, their usage and manufacturing methods

TODA YURI (JP)
ABUKAWA GENKI (JP)
MAEDA DAISUKE (JP)
HIKIDA KAZUO (JP)
FUJINAKA SHINGO (JP)

PCT/JP2018/006078

August 23, 2018

February 20, 2018

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NIPPON STEEL & SUMITOMO METAL CORP (JP)

C22C38/00; C22C38/60; B21D22/20; B21D22/26; C21D1/18; C21D9/00; C21D9/46

WO2014024831A1	2014-02-13
WO2012128225A1	2012-09-27
WO2015152284A1	2015-10-08
WO2014034714A1	2014-03-06
WO2013180180A1	2013-12-05
WO2015097882A1	2015-07-02

JP2014201765A	2014-10-27
JP2015196844A	2015-11-09
JP2015030890A	2015-02-16
JP2006104546A	2006-04-20

AOKI, Atsushi et al. (JP)

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