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1. 发明专利

JP2004268118A Method of producing iron based shape memory alloy pipe, and pipe produced thereby 审中-公开
公开(公告)号：JP2004268118A
公开(公告)日：2004-09-30
申请号：JP2003065219
申请日：2003-03-11
申请人： Hiroshi Kubo , Kurimoto Ltd , 紘久保 , 株式会社栗本鐵工所
发明人： UMEMOTO KOSAKU , NAKAMURA KIMIO , MICHIURA YOSHISADA , KITAGAWA MASAYOSHI , KUBO HIROSHI
IPC分类号： B22D1/00 , B22D13/02 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To increase the ratio of columnar crystals in a pipe fitting made of an iron based shape memory alloy, and to improve the fastening force of the pipe.
SOLUTION: In the method of producing an iron based shape memory alloy pipe, at the time when a pipe formed of an iron based shape memory alloy as the stock of a pipe fitting is cast, Ti as an element more easily bonded with N than the case of Al is added to the molten metal of an iron based shape memory alloy in a range where it is bonded with the whole N contained in the alloy, and also the amount of titanium compounds disturbing the formation of columnar crystals is regulated within an allowable range. Thus, the precipitation of AlN on the solidification of the alloy is suppressed to obtain a columnar crystal ratio of ≥50%, so that the inside diameter shrinkage rate of the pipe fitting using the pipe as the stock is increased to improve the fastening force of the pipe.
COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2004324677A Method and structure for joining metallic member 审中-公开
标题翻译：接合金属会员的方法和结构
公开(公告)号：JP2004324677A
公开(公告)日：2004-11-18
申请号：JP2003116512
申请日：2003-04-22
申请人： Awaji Sangyo Kk , Hiroshi Kubo , Shoichi Sato , 紘久保 , 彰一佐藤 , 淡路産業株式会社
发明人： SATO SHOICHI , KUBO HIROSHI , MARUYAMA TADAKATSU
IPC分类号： F16L13/14 , C22C21/02 , C22C38/00 , F16B4/00 , F16B5/02 , F16B7/04
摘要： PROBLEM TO BE SOLVED: To provide a method and a structure by which high joint strength can be achieved by rationally combining the junction by a ferrous shape-memory alloy and the diffused junction on condition that an inexpensive ferrous shape-memory alloy is used.
SOLUTION: When metallic members are joined by utilizing the shape recovering movement caused by heating a jointing member made of the ferrous shape-memory alloy, Al or an Al alloy containing at most 15 mass% Si is located at the position where the stress is to be applied in the recovering of the shape of the jointing member. The heating and the load application for causing the diffusion of the alloy are carried out by utilizing the heating for causing the shape recovering movement of the jointing member and the stress caused by the shape recovering movement. Thus, the metallic members are rigidly joined by combining the junction by the shape-memory alloy and the diffused junction.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种方法和结构，通过在低成本的亚铁形状记忆合金是（或）成形的条件下，通过将铁结形状记忆合金和扩散连接合理地组合来实现高接合强度用过的。解决方案：通过利用由加热由亚铁形状记忆合金制成的接合构件引起的形状恢复运动来接合金属构件时，Al或含有至多15质量％Si的Al合金位于应力应用于接合构件的形状的恢复。用于引起合金扩散的加热和负载施加通过利用用于使接合构件的形状恢复运动的加热和由形状恢复运动引起的应力来进行。因此，金属构件通过将形状记忆合金和扩散结合在一起而结合在一起。版权所有（C）2005，JPO＆NCIPI

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