|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||C22F-001/08 C22F-001/12 C22D-009/10 C22D-009/16|
|미국특허분류(USC)||148/536; 148/518; 148/516; 148/527|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 4 인용 특허 : 24|
One embodiment of the present process, which is particularly useful for forming bullets from two dissimilar metals and/or alloys that have been bonded together, comprises heat-treating such bullets to simultaneously harden the core and soften the jacket. The process comprises: (a) forming a core comprising a lead alloy; (b) applying a copper or a copper alloy to at least a portion of an exterior surface of the core to form a jacketed bullet; (c) heating the jacketed bullet at a pre-selected temperature for a period of time sufficient to simultaneously ha...
1. A process for making a jacketed bullet, comprising:forming a core from a material selected from the group consisting of lead, lead alloys, and mixtures thereof; applying a layer of copper or copper alloy to an external surface of the core to form a copper or copper alloy jacket having a thickness of at least 0.004 inch, the jacket and core forming a projectile; heating the projectile to stress-relieve the jacket and precipitation-harden the core; quenching the projectile; and aging the projectile to allow the core to achieve its final hardness and a r...