Title:
PROCESS FOR PREVENTING NITRIDING IN METAL MOLD
Document Type and Number:
Japanese Patent JP3903283
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a surface-treatment process effective for masking a metal mold, etc. at nitriding, wherein the metal mold is made through electric discharge machining using carbon electrodes.
SOLUTION: The process for preventing nitriding in the metal mold comprises a diluting step wherein a coating for preventing nitriding is diluted, a spraying step wherein the diluted coating is loaded into a sprayer and sprayed onto a part where nitriding needs to be prevented, a nitriding step wherein the entire metal mold including the part coated with the coating in the spraying step is nitrided and a peeling step wherein the coating sprayed in the nitriding step is peeled off. This prevents nitriding of the aluminum wheel mold.
Inventors:
Norio Kainuma
Akedagawa Shinya
Akedagawa Shinya
Application Number:
JP2002205398A
Publication Date:
April 11, 2007
Filing Date:
July 15, 2002
Export Citation:
Assignee:
Asia Engineering Co., Ltd.
International Classes:
B05D1/02; C23C8/26; B05D1/32; (IPC1-7): C23C8/26; B05D1/02; B05D1/32
Domestic Patent References:
| JP56139671A | ||||
| JP11061375A | ||||
| JP52078721A | ||||
| JP58039774A | ||||
| JP11131208A | ||||
| JP2001011534A | ||||
| JP2250949A |
Attorney, Agent or Firm:
Kunio Nakagawa
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