Press forming die, and method of manufacturing press forming die protection film

一种保护膜、金属模的技术，应用在制造工具、金属加工设备、金属材料涂层工艺等方向，能够解决不能得到保护膜效果等问题，达到防止冲击破坏及疲劳破坏、防止凝聚、高耐烧粘性的效果

Active Publication Date: 2013-12-25
CAMUS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the droplet is generally not removed. If the droplet removal treatment is performed, the surface of the substrate of the tool is partially exposed, and there is a problem that the effect of the protective film cannot be obtained.

Method used

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  • Press forming die, and method of manufacturing press forming die protection film
  • Press forming die, and method of manufacturing press forming die protection film
  • Press forming die, and method of manufacturing press forming die protection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] Hereinafter, the effect of the structure of this invention is demonstrated comparing the Example and the comparative example. First, a protective film is formed on the surface of a metal mold for press molding. The metal mold of the present example is a die and a punch obtained by quenching and tempering steel equivalent to SKD11 so as to have a hardness of 60HRC. The protective film is formed by molten salt dipping (TD) method or arc ion plating method. In the molten salt dipping method, the metal mold is immersed in a VC-based salt bath to form a VC-based protective film on the surface, then quenched and tempered, and then polished to form a thickness of 8 μm. protective film. In addition, in the arc ion plating method, Ti: 50 atomic % and Al: 50 atomic % are used as target (cathode) materials (wherein each component also contains unavoidable impurities), and as the The process gas uses nitrogen or a mixed gas of nitrogen and methane and other hydrocarbons. In each...

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Abstract

A press forming die includes a protection film for preventing seizure during press forming which is formed on at least a forming surface that contacts a formed body. The protection film is formed by PVD process and, when the number of divisions of a plurality of individual sections into which an arbitrary selected section picked out of a surface of the protection film is divided is N, and the slope of the surface at an n-th division point from an end of the selected section is (dZn / dXn), has a root mean square R?q of 0.032 or less, where R?q is calculated by expression (1). Thus, the anti-seizure property of the press forming die having the protection film formed by PVD process can be improved.

Description

technical field [0001] The present invention relates to a metal mold for press forming in which a protective film for preventing seizing is formed on a surface in contact with a press-formed object to be formed, and a method for manufacturing the same, and in particular to an improved resistance to burning of the protective film formed by PVD method Metal mold for viscous pressure forming and its manufacturing method. Background technique [0002] Since the metal mold for press forming is used in the application of repeatedly shearing and bending the object to be formed, friction occurs between the metal material of the object to be formed, and frictional heat is easily generated on the surface of the metal mold. caused by burning. When a lubricant is used to prevent the seizing, it is necessary to perform degreasing treatment or the like on the formed body after press forming, so there is a problem that post-processing after press forming becomes complicated. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32B21D37/01B21D37/18
CPCB21D37/01C23C14/0641C23C14/5886B21D37/18C23C14/32B29C33/68
Inventor 果子贵晴山本兼司
Owner CAMUS CO LTD
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