- Patent Title: Method for producing a blank from extrusion material, and extruder
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Application No.: US16285906Application Date: 2019-02-26
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Publication No.: US11654465B2Publication Date: 2023-05-23
- Inventor: Raouf Ben Amor , Augustin Donhardt , Tim Guter , Bjoern Hoschke , Guenther Hoyer , Herbert Rudolf Kauper , Klaus Roediger , Fabian Rosenberger , Jürgen Schwägerl
- Applicant: Kennametal Inc.
- Applicant Address: US PA Latrobe
- Assignee: Kennametal Inc.
- Current Assignee: Kennametal Inc.
- Current Assignee Address: US PA Latrobe
- Agent Christopher J. Owens
- Priority: DE 2018202941.5 2018.02.27
- Main IPC: B21C23/14
- IPC: B21C23/14 ; B21C25/08 ; B21C25/02

Abstract:
The invention relates to a method for producing a blank, in particular a blank for the production of a cutting tool, wherein a green body extending in the direction of the extrusion axis is produced from extrusion material by means of an extruder which has an extrusion channel extending along an extrusion axis; wherein the extrusion channel together with a movable mold element forms a die of the extruder; and wherein the mold element is moved relative to the extrusion channel and within said extrusion channel during the extrusion of the green body, whereby the shaping geometry of the die is changed so that the completely extruded green body hereby has a first functional segment and a second functional segment adjacent thereto in the direction of the extrusion axis (4); wherein the two functional segments differ with regard to their geometries impressed by the die.
Public/Granted literature
- US20190262879A1 Method for Producing a Blank from Extrusion Material, and Extruder Public/Granted day:2019-08-29
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