|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B22F-001/00 B21B-003/00 C21D-008/02|
|미국특허분류(USC)||148/115 ; F ; 72/202 ; 148/127 ; B ; 420/430|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 34 인용 특허 : 13|
A consolidated tungsten alloy body consisting essentially of from about 60% to about 98% by weight of tungsten, balance, nickel and iron, containing a continuous phase of tungsten and a discontinuous phase of grains of a tungsten, nickel and iron alloy having an aspect ratio of at least 4:1 relatively uniformly distributed throughout the continuous phase and wherein said body has a recrystallization temperature of from about 1000°C. to about 1200°C. A process for producing the consolidated bodies comprises working and annealing at controlled temperatures...
A process for producing consolidated tungsten heavy alloy bodies which process comprises: (a) forming a bar of a tungsten heavy alloy consisting essentially of from about 60% to about 9% by weight of tungsten, balance nickel and iron in a weight ratio of nickel to iron of from about 6: to about 9:1, by sintering at a temperature below the melting point of said iron an nickel,; (b) working the bar at a temperature of between about 700°C. and about 900°C. using a series of passes to achieve up to about a 5% reduction in cross-sectional area per pass to pro...