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21. 发明专利

JPS56116861A MARTENSITEETEXTURED STAINLESS STEEL 失效
公开(公告)号：JPS56116861A
公开(公告)日：1981-09-12
申请号：JP1968780
申请日：1980-02-21
申请人： MITSUBISHI HEAVY IND LTD
发明人： TSUJI ICHIROU
IPC分类号： C22C38/00 , C22C38/46
摘要： PURPOSE:To obtain a martensite-textured stainless steel for low-temperature prime mover part, which is excellent in toughness at low temperature, by adding a specific alloying element to 12% Cr-steel. CONSTITUTION:A martensite-textured stainless steel, containing 0.06-0.18% C,

22. 发明专利

JPS5527434A PRODUCTION OF ROTARY DISC 失效
公开(公告)号：JPS5527434A
公开(公告)日：1980-02-27
申请号：JP9954278
申请日：1978-08-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： TSUJI ICHIROU , TANAKA AKIO
IPC分类号： B23K15/00
摘要： PURPOSE:To readily and inexpensively produce the rotary discs which are used particularly at high temperatures by beforehand peforming build-up welding of Ni- base alloy to the weld zone of the low alloy steel forging in the disc and electron- beam-welding a ring-form forging of Fe-base heat-resisting alloy to the outside circumferential part thereof. CONSTITUTION:A ring-form forming 1 of Fe-base heat-resisting alloy is subjected to solid solution and aging treatment. On the other hand a disc-form forging 2 of low alloy steel is subjected to hardening and tempering treatment. Next, the forgings 1, 2 are rough-machined to respectively required shapes. Thereafter, with the forging 2, build-up welding of 2 to 3 mm of Ni-base alloy is performed on the part thereof to be welded to the forging 1, following to which the surface 3' of the build-up weld is machined. Next, both forgings 1, 2 are combined as illustrated and are welded and bonded 4 by electron-beam-welding. Thence, this weldment is finish-machined to a required shape in conformity with the design drawing, whereby the integral disc is produced.

23. 发明专利

JPS53127302A METHOD AND APPARATUS FOR PREPARING CAST ALLOY 失效
公开(公告)号：JPS53127302A
公开(公告)日：1978-11-07
申请号：JP4205377
申请日：1977-04-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： TSUJI ICHIROU
IPC分类号： C22C19/03 , B22D27/02 , B22D27/04 , C22C1/00 , C22C1/02 , C22F3/02
摘要： PURPOSE:To produce the heat-resisting cast alloy to be used for moving vane of gas turbine, etc., in which the crystal grains has solidified while being lined up in one direction, by applying the temperature gradient while imposing the magnetic field in the same direction as the growing direction of the crystal and controlling the solidifying rate.

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