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Title:
鉄-ニッケル合金から作られたストリップの製造方法
Document Type and Number:
Japanese Patent JP4918199
Kind Code:
B2
Abstract:
A method for the fabrication of Fe-Ni alloy strip consists of:- a) fabricating a hot rolled strip by hot rolling a semi-product, from direct thin strip casting and possibly light hot rolling, and subjecting it to tempering at a temperature between 950 and 1200 degrees C followed by a rapid cooling and possibly to pickling, to obtain a tempered strip; b) fabricating a hardened strip by cold rolling the tempered strip, with a reduction rate greater than 5%; and c) subjecting the hardened strip to a recrystallization anneal under a neutral or reducing atmosphere realized by defiling at a temperature between 900 and 1200 degrees C over a period of 30 seconds to 5 minutes, followed by a static repose at a temperature between 900 and 1050 degrees C for a period of between 15 minutes and 5 hours and then cooling it to a temperature of less than 500 degrees C at a cooling speed sufficient to avoid the formation of hardening precipitates. The temperature of the tempering operation effected after hot rolling is between 1000 and 1075 degrees C. An Independent claim is included for Fe-Ni alloy strip of the type with y' and/or y structural hardening of which the thermal dilation coefficient between 20 and 150 degrees C is less than 7 asterisk 10<-6>/K non hardened.

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Inventors:
Ricardo Cozar
Jean-Pierre Layer
Pierre-Louis Reide
Application Number:
JP2001276960A
Publication Date:
April 18, 2012
Filing Date:
September 12, 2001
Export Citation:
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Assignee:
Infi Yujinu Precisionion
International Classes:
B21B1/46; B21B1/22; C21D9/46; B22D11/00; B22D11/06; C21C7/00; C21D1/00; C21D1/26; C21D1/32; C21D7/02; C21D8/02; C21D8/04; C21D9/52; C22C30/02; C22C38/00; C22C38/06; C22C38/08; C22C38/14; C22C38/54; C22F1/10
Domestic Patent References:
JP7188860A
JP7252602A
JP8092700A
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Mitsuru Inoue
Akio Ichiiri
Katsuma Osaki
Takamasa Soma



 
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