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公开(公告)号：US3553994A
公开(公告)日：1971-01-12
申请号：US3553994D
申请日：1968-04-17
Applicant: ASEA AB
Inventor： MONESTAM ESKIL
Abstract: A BILLET OF AT LEAST TWICE AS GREAT A DIAMETER AS ITS THICKNESS IS INSERTED INTO A MOLD HAVING A BOTTOM OF CONICAL OR SPHERICAL SHAPE AND IS PRESSED DOWNWARD BY A PUNCH HAVING A BODY END SUBSTANTIALLY CORRESPONDING IN SHAPE TO THE BOTTOM OF THE MOLD AND HAVING A SMALLER DIAMETER THAN THE DIAMETER OF THE SURROUNDING MOLD. THE TOP OF THE BILLET IS PROVIDED WITH A LUBRICANT. ON PUSHING DOWN THE PUNCH THE CENTER PART OF THE BILLET IS FIRST BENT DOWNWARDLY AFTER WHICH THE MATERIAL IS EXTRUDED UPWARDLY INTO THE SPACE BETWEEN THE PUNCH AND THE MOLD.
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2.发明授权Method of manufacturing components from a part projecting from a larger part, having slim and/or elongated form 失效从大部分投影部分制造组件的方法，具有滑动和/或延长的形式
公开(公告)号：US3577761A
公开(公告)日：1971-05-04
申请号：US3577761D
申请日：1968-03-04
Applicant: ASEA AB
Inventor： MONESTAM ESKIL
CPC classification number: B21C23/007
Abstract: In the manufacture of objects or components with one part having larger dimensions and one part having slim and/or elongated form, a billet is used which in a first step is forged, preferably cold-forged to a blank with decreasing cross section. This blank is thereafter, possibly after annealing and machining, extruded by means of liquid pressure to the desired shape and dimension at the narrow end of the blank.
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