METHOD AND DEVICE FOR MANUFACTURING TITANIUM ALLOY INGOT

WIPO Patent Application WO/2020/059090

A1

In order to manufacture a titanium alloy ingot having a more correct and uniform chemical composition, the method of the present invention includes a titanium-containing raw material supply step for supplying a raw material 50 to a hearth 7, a refining step for refining a melt 51, a filling step for filling a mold 8 with the melt 51, an additive supply step for supplying an additive 54 including at least one of aluminum and tin to at least one of the melt 51 in the hearth 7 and the melt 51 in the mold 8, and a casting step. In the additive supply step, an additive supply position B1 is set in a downstream region 15 from the hearth 7. The downstream region 15 is a region between an end point Ce and a position separated 50% of the path length B of the melt 51 in the base 7 from a start point Cs of the path C of the melt 51 in the base 7, in the main flow direction D.

JPH07223047	THREE DIMENSIONAL MOVING STIRRER
JP2001294949	CONTINUOUS METHOD FOR VACUUM REFINING MOLTEN METAL AND APPARATUS THEREFOR

MIZUKAMI HIDEO (JP)
KITAURA TOMOYUKI (JP)
TAKEDA YOSHINARI (JP)
SHIRAI YOSHIHISA (JP)
UMEDA SHIGERU (JP)

PCT/JP2018/034883

March 26, 2020

September 20, 2018

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NIPPON STEEL CORP (JP)

B22D1/00; B22D11/108; C22B34/12; C22C1/02; C22C14/00

JPH0266129A	1990-03-06
JPS6479326A	1989-03-24
JPH04173929A	1992-06-22
JP2013100566A	2013-05-23
JP2010132990A	2010-06-17
JP2015157296A	2015-09-03
JPS6344539B2	1988-09-06
JP2017061731A	2017-03-30
JP2010523925A	2010-07-15
JP2012176426A	2012-09-13

BRIGHTAS IP ATTORNEYS (JP)

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