Invention Grant
US08822027B2 Mold for plastic forming and a method for producing the same, and method for forging aluminum material
有权
用于塑性成型的模具及其制造方法,以及锻造铝材料的方法
- Patent Title: Mold for plastic forming and a method for producing the same, and method for forging aluminum material
- Patent Title (中): 用于塑性成型的模具及其制造方法,以及锻造铝材料的方法
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Application No.: US13252420Application Date: 2011-10-04
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Publication No.: US08822027B2Publication Date: 2014-09-02
- Inventor: Kenji Yamamoto
- Applicant: Kenji Yamamoto
- Applicant Address: JP Kobe-shi
- Assignee: Kobe Steel, Ltd.
- Current Assignee: Kobe Steel, Ltd.
- Current Assignee Address: JP Kobe-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-267341 20101130
- Main IPC: B21J13/02
- IPC: B21J13/02 ; B21J3/00 ; B21K5/20

Abstract:
A mold for plastic forming having excellent seizure resistance controlled by adjusting its surface properties. In addition, a process producing the mold, that includes: roughening a surface of a base material by a shot blast method to adjust its arithmetic averaged roughness Ra: higher than 1 μm but 2 μm or lower; polishing the surface of the base material to adjust its skewness Rsk to 0 or lower while retaining Ra: 0.3 μm or higher; and forming a hard film on the surface of the base material where the surface of the hard film has an arithmetic averaged roughness Ra: 0.3 μm or higher but 2 μm or lower and skewness Rsk: 0 or lower. Adjusting the surface of the mold to have a non-concave-biased configuration, limits the capacity for concaves to accumulate lubricant, such that the lubricant is sufficiently deposited on the surfaces of the convexes.
Public/Granted literature
- US20120131980A1 MOLD FOR PLASTIC FORMING AND A METHOD FOR PRODUCING THE SAME, AND METHOD FOR FORGING ALUMINUM MATERIAL Public/Granted day:2012-05-31
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