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A method of making an impression die comprises the steps of providing a substantially planar bendable bimetal plate 10 consisting of copper and steel bonded together, forming a relief pattern 14 in the surface of the copper for example by an etching process, forming the plate into a non-planar sleev...

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Bibliographische Detailangaben
1. Verfasser:	VIGURS, STANLEY WALTER
Format:	Patent
Sprache:	dan
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS,WHEELS, RINGS, BARRELS, BALLS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	A method of making an impression die comprises the steps of providing a substantially planar bendable bimetal plate 10 consisting of copper and steel bonded together, forming a relief pattern 14 in the surface of the copper for example by an etching process, forming the plate into a non-planar sleeve with the copper on the outside and joining the free edges of the sleeve together. Preferably the free edges of the sleeve 10 are joined together while the sleeve is mounted on a metal mandrel 15.