Abstract:
Die Erfindung betrifft ein aus einem Werkstoffverbund gebildetes Bauteil, das zumindest abschnittsweise von einer Bruchfläche begrenzt ist. Weiterhin betrifft die Erfindung ein Verfahren zur Vorbereitung einer in ihrem Verlauf weitgehend vorbestimmten Bruchtrennstelle in einem Bauteil. Erfindungsgemäß wird zur Vorbereitung der Bruchtrennstelle in einem für eine Rißinitiierung relevanten Bereich lokal eine spröde Zone gebildet, indem mittels eines auf den relevanten Bereich gerichteten energiereichen Strahles der Werkstoff einer ersten Werkstoffzone aufgeheizt wird und mit dem Werkstoff einer darunterliegenden zweiten Zone lokal eine spröde Diffusionsverbindung eingeht.
Abstract:
A heat treatment apparatus for a crank shaft is disclosed. The disclosed heat treatment apparatus for a crank shaft comprises i) a base frame; ii) a jig frame having the crank shaft supported thereon to be able to rotate, which is installed to perform a reciprocating motion horizontally and vertically toward the base frame; and iii) a laser unit fixed on a certain position, which heat-treats a pin unit and a journal unit by irradiating the pin and journal units with laser beams.
Abstract:
본 발명의 목적은 거친 가공 후에, 그리고 특히 경화 후에, 특히 크랭크 샤프트(1)의 재료 제거 가공을 위한 공정 연쇄를 단축하는 것이다. 상기 목적을 달성하기 위해, 본 발명에 따르면 특히 제1 단계로서의 원주방향 회전 밀링과 제2 단계로서의 후속 건식 연마의 조합이 제시된다.
Abstract:
본 발명의 목적은 거친 가공 후에, 그리고 특히 경화 후에, 특히 크랭크 샤프트(1)의 재료 제거 가공 중의 공정 연쇄를 단축하는 것이다. 상기 목적을 달성하기 위해, 본 발명에 따르면 특히 일점 선삭과 후속 접선방향 선삭 및/또는 마무리 및/또는 정밀 건식 연마 및/또는 전기화학적 식각의 제2 단계로서 제시된다.
Abstract:
PURPOSE: A method for manufacturing a cam shaft is provided to prevent cracks even under a heavy coupling load by improving the fracture strength of a cam through pre- and main-sintering. CONSTITUTION: A method for manufacturing a cam shaft comprises the steps of: manufacturing a cam(10) with internal grooves, assembling the cam and a shaft(20) with external projections by rotating one of the cam and the shaft relative to the other one, and welding the cam and the shaft by brazing, wherein a gap is formed between the external surface of the shaft and the grooves of the cam and filled with a filler during brazing.
Abstract:
크랭크샤프트 열처리 장치가 개시된다. 개시된 크랭크샤프트 열처리 장치는 ⅰ)베이스 프레임과, ⅱ)크랭크샤프트가 회전 가능하게 지지되며, 베이스 프레임에 대해 수평 왕복 이동 및 상하 왕복 이동 가능하게 설치되는 지그 프레임과, ⅲ)소정의 고정된 위치에서 크랭크샤프트의 핀부와 저널부에 레이저빔을 조사하여 그 핀부와 저널부를 열처리하는 레이저유닛을 포함할 수 있다.
Abstract:
PURPOSE: A welding structure of cam shaft front end piece is provided in which welding ends of a pipe shaped shaft and a round bar shaped front end piece are faced each other so as to be welded by frictional heat thereof. CONSTITUTION: In a cam shaft(1) made by welding a welding end of shaft(1a) on which a plurality of cams(2) are installed to a welding end of front end piece(1b), the welding structure of cam shaft front end piece is characterized in that welding is done by frictional heat generated between the inserting end(11) of the front end piece and the inner diameter of the shaft and between respective welding ends of the front end piece and the shaft by forming an inserting end having outer diameter corresponding to inner diameter of the shaft on the welding end of the front end piece, inserting the inserting end into inner diameter of the welding end, and rotating the front end piece and shaft in a high speed in the state that the welding ends of the front end piece(1b) and shaft(1a) are faced each other.
Abstract:
A liquid phase diffusion welding method for a metallic part capable of increasing the quality and productivity of a joint part by achieving the shortage of welding time, the uniformization of welding structure, and increases in the tensile strength and fatigue strength of a joint to increase the quality and reliability thereof. An amorphous alloy foil for liquid phase diffused welding is disposed on the fusion face of a metal material. As a primary welding, the amorphous alloy foil and the metal material are fused and press-welded to each other by a resistance welding to form the joint part. As a second welding, the joint part is re-heated to the melting point of the amorphous alloy foil or higher and then the temperature is maintained until the solidification of the joint part is completed.