Invention Grant
- Patent Title: Method of compacting the surface of a sintered part
- Patent Title (中): 压实烧结部件表面的方法
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Application No.: US12310772Application Date: 2007-08-31
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Publication No.: US08474295B2Publication Date: 2013-07-02
- Inventor: Herbert Schmid , Karl Dickinger , Wolfgang Siessl
- Applicant: Herbert Schmid , Karl Dickinger , Wolfgang Siessl
- Applicant Address: AT
- Assignee: Miba Sinter Austria GmbH
- Current Assignee: Miba Sinter Austria GmbH
- Current Assignee Address: AT
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: ATA1468/2006 20060904
- International Application: PCT/AT2007/000416 WO 20070831
- International Announcement: WO2008/028207 WO 20080313
- Main IPC: B21K1/30
- IPC: B21K1/30 ; B21D45/02

Abstract:
The invention describes a method of compacting the surface of a sintered part (2), whereby a sintered part (2) is moved in a die (1) along an axis (3) in a pressing direction (20) through several die portions (7, 8, 9) from a first die portion (7) at a first die orifice (6) into a last die portion (9), and a wall surface (16) of each die portion (7, 8, 9) forms at least one pressing surface (18) against which a contact surface (17) formed by an external surface (12) of the sintered part (2) is pressed, and an internal contour (25) defined by the pressing surface (18) lying in a cross-section by reference to the axis (3) at least approximately corresponds to an external contour (26) defined by the contact surface (17). As the sintered part (2) is moved, the surface is compacted from the first die orifice (6) to the last die portion (9) by die portions (7, 8, 9) continuously merging into one another and by monotonously decreasing internal diameters (19) of the die portions (7, 8, 9) as measured between co-operating pressing surfaces (18).
Public/Granted literature
- US20110132057A1 Method of Compacting the Surface of a Sintered Part Public/Granted day:2011-06-09
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