Cooling method and manufacturing method of metal part and cooling apparatus for metal part
AssigneesOriental Engineering Co., Ltd., Nippon Oil Co., Ltd.
InventorsSaburou Yamagata, Hiromitsu Murakami, Hideo Yokota, Satoshi Suda, Hiroyuki Hoshino, Hideki Tsuge, Koichi Terasaka
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Abstract
A metal part is uniformly cooled by uniformly breaking a vapor film formed when a cooling liquid vaporizes on a surface of the metal part. Oscillations are applied to the vapor film formed on the surface of the metal part, whereby the vapor film is broken without the stirring of a cooling liquid 1. The cooling liquid 1 is stirred after the vapor film begins to be broken, whereby bubbles formed by the breakage of the vapor film are caused to diffuse in the cooling liquid 1.
Claims11
A cooling method of a metal part by immersing the heated metal part in a cooling liquid, comprising the step of:
- appllying a repeatedly varying pressure to a vapor film formed when the cooling liquid vaporizes on a surface of the metal part, wherein the vapor film is broken without the stirring of the cooling liquid.
A method of manufacturing a metal part, characterized in that the manufacturing method comprises a step of heating a metal part and a step of cooling the metal part after the heating thereof by immersing the metal part in a cooling liquid, and in that in the cooling step, by applying a repeatedly varying pressure to a vapor film which is formed when the cooling liquid vaporizes on a surface of the metal part, the vapor film is broken without the stirring of the cooling liquid.
A cooling apparatus for a metal part, characterized in that the cooling apparatus comprises means for cooling a metal part after the heating thereof by immersing the metal part in a cooling liquid, and in that the cooling apparatus applies a repeatedly varying pressure to a vapor film which is formed when the cooling liquid vaporizes on a surface of the metal part, and breaks the vapor film without the stirring of the cooling liquid.
Dependencies are inferred from the claim text.