Abstract:
PURPOSE: A connecting rod alloy powder composition and a method for manufacturing the connecting rod using the same are provided to reduce manufacturing method by omitting the installation of an additional high temperature sintering furnace. CONSTITUTION: A connecting rod alloy powder composition comprises C of 0.45~0.75 weight%, Cr of 1.40~1.60 weight%, Mo of 0.15~0.25 weight%, Mn of 0.3~0.5 weight%, S of 0.05~0.15 weight%, the rest including Fe and inevitable impurity. A connecting rod alloy powder composition comprises next steps. An alloy power is pressurized in the mold after the injection using a press in order to a preliminary mold(10). The preliminary mold is sintered in a sintering furnace. The sintered preliminary mold is pressurized in a forging press die. The forging finished preliminary mold is cooled under nitrogen atmosphere.
Abstract:
본 발명은 자동차 스티어링휠 리모콘 베젤 조립 시 사용되는 폴리우레탄 폼과 접촉 시에도 화학적 균열이 발생하지 아니하는 우수한 내환경균열성을 가지고, 향상된 내열성 또는 내충격성을 가지는 수지 조성물로 제조된 스티어링 휠 리모콘 베젤용 고분자 수지 조성물에 관한 것이다. 본 발명의 일 측면에 따른 스티어링 휠 리모콘 베젤용 고분자 수지 조성물은, 테레프탈산을 포함한 디카르복실산 성분의 잔기와, 디안히드로헥시톨을 포함한 디올 성분의 잔기를 포함하는 폴리에스테르 공중합체 40 내지 50중량%; 불포화니트릴-디엔계고무-방향족비닐 그라프트 공중합체, 및 알킬메타크릴레이트-디엔계고무-방향족비닐 그라프트 공중합체로 이루어진 군으로부터 선택되는 1종 이상의 공중합체 10 내지 20중량%; 및 폴리카보네이트 40 내지 50중량%로 이루어진 수지 조성물과, 상기 수지 조성물 100중량부에 대해 포스파이트계 산화방지제 0.1 내지 0.5중량부를 더 포함한다.
Abstract:
The present invention relates to a method of manufacturing a hot forged product comprising: a first step for forming a powder forming sintered body since a press pressurizes a mold after a powder is charged in the mold; a second step for sintering the formed powder forming sintered body in a sintering furnace; a third step for shot blast processing the sintered powder forming sintered body; a forth step for carbon-coating the shot blast processed powder forming sintered body; a fifth step for high-frequency induction heating the carbon coated powder forming sintered body; a sixth step for forging the high-frequency induction heating powder forming sintered body; a seventh step for cooling the forged powder forming sintered body in a nitrogen atmosphere; and an eighth step for shot blast processing the cooled powder forming sintered body. The method of manufacturing a hot forged product is capable of reducing a production cost since a loss of a material and a processing amount are reduced than a conventional hot forging process, and reducing a manufacturing process by using a powder forming sintered body as a preform of a hot forging. [Reference numerals] (S100) Forming; (S200) Sintering; (S300,S800) Shot blast; (S400) Carbon coating; (S500) High-frequency induction heating; (S600) Forging; (S700) Cooling