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Film and method for manufacturing same

A manufacturing method and film technology, which are applied in the directions of manufacturing tools, casting molding equipment, casting mold components, etc., can solve the problems of insufficient film strength, easy falling off of the film, and deterioration of the film, and achieve the effect of suppressing deterioration and falling off.

Inactive Publication Date: 2014-04-30
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the technique described in Patent Document 1, if the bond between the carbon film and the fullerene is not complete, the fullerene is removed by the alkaline solvent, deteriorating the film.
In addition, the strength of the film is not sufficient, and the film is easy to fall off
[0006] Therefore, the technique described in Patent Document 1 has room for improvement

Method used

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  • Film and method for manufacturing same
  • Film and method for manufacturing same
  • Film and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0090] First, the oil-based mold release agent is applied to the molding surface of the metal mold on which the primary film 100 is formed, and the primary film 100 is placed in a non-oxidizing atmosphere.

[0091] Next, the molten metal of aluminum alloy at 600°C is filled in the metal mold, and the heat transfer coefficient is 6000W / m 2 On the heat transfer interface of K (600°C 50MPa) (the molding surface of the metal mold), the initial film 100 is subjected to 4000kcal / m for 5 seconds 2 into the heat.

[0092] Finally, the solidified molten metal (molten) is taken out from the metal mold.

[0093] The above-mentioned treatment was performed a total of 1000 times to prepare a film 1 .

[0094] Similar to the initial coating 100 , the surface analysis in EPMA was performed on the coating 1 .

[0095] FIG. 5 shows the results of surface analysis of the film 1 in EPMA. FIG. 5( a ) is a diagram showing the surface analysis results of carbon in the coating 1 in EPMA, and FIG...

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Abstract

Provided are a high-strength film that does not easily deteriorate, and a method for manufacturing the film. In a manufacture step (S1), a film (1) is formed on a forming surface of a molding die. The manufacture step is provided with: an initial film-forming step (S11) wherein an initial film (100) is formed on the forming surface of the molding die, said initial film having a carbon film (140), which contains nanocarbon (142), and is coated with fullerene (143), and a nitride compound layer (120) and a sulfurized layer (130), which are positioned between the carbon film (140) and the molding die; and an intermittent heating step (S12) wherein the initial film (100) formed in the initial film-forming step (S11) is intermittently heated under a non-oxidizing atmosphere.

Description

technical field [0001] The present invention relates to a film formed on the surface of a ferrous material and a method for producing the same. Background technique [0002] Conventionally, in die-casting and the like, there is known a technique of forming a predetermined film on the molding surface (surface of iron-based material) of a mold in order to reduce mold release failure, etc. (for example, refer to Patent Document 1). [0003] Patent Document 1 discloses a technique for forming a film on a molding surface of a metal mold by coating fullerene on a carbon film containing nanocarbons such as carbon nanotubes. [0004] According to the technique described in Patent Document 1, the gaps in the carbon film are filled with fullerenes to relieve unevenness on the surface of the carbon film, thereby reducing mold release failures. [0005] However, in the technique described in Patent Document 1, if the bond between the carbon film and the fullerene is not complete, the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/06C01B31/02C23C8/28
CPCC23C8/80B22C9/061C23C8/02C23C8/28B22C9/12
Inventor 古川雄一外崎修司
Owner TOYOTA JIDOSHA KK