公开(公告)号：US3654687A

公开(公告)日：1972-04-11

申请号：US3654687D

申请日：1970-04-27

Applicant: ASEA AB

Inventor： BURSTROM MARTIN ,  NILSSON JAN

IPC: B21J1/04 ,  B21C23/00 ,  B21C23/22

CPC classification number: B21C23/22 ,  B21C23/007 ,  Y10T29/49805

Abstract: In hydrostatic extrusion of a wire or rod of one metal with a casing of another metal, a billet is extruded through a die from a pressure chamber provided with a conical surface adjacent the die opening. The billet is so constructed that fluid is prevented from entering between the core and the casing and that the axial forces created by the differences in moulding resistance of the different materials are transferred between the casing and the core. This may be done by providing a member which overlies the rear ends of the casing and core. The joint between the casing and core is sealed at the rear ends. The front end of the core is shaped to match the conical surface of the die, and the casing may be brought down over this front end, the front end of the casing tapering in thickness.

Abstract translation: 在具有另一种金属外壳的一种金属的线材或棒材的静态挤压中，坯料通过模具从邻近模具开口的具有锥形表面的压力室挤出。 坯料被构造成防止流体被阻止进入芯部和壳体之间，并且由不同材料的成型阻力差异产生的轴向力在壳体和芯之间传递。 这可以通过提供覆盖在壳体和芯的后端的构件来实现。 外壳和芯体之间的接头在后端被密封。 芯的前端被成形为与模具的锥形表面相匹配，并且壳体可以在该前端下降，套管的前端的厚度逐渐变细。