Method for forming coating film on constant velocity universal joint

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United States of America Patent

PATENT NO 12017249
APP PUB NO 20230219115A1
SERIAL NO

18077162

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Abstract

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A coating film having excellent adhesion, even without the presence of a chemical conversion film treatment as an undercoat, and a metal automotive part having the coating film. A powder is deposited by powder-coating onto the surface of a metal automotive part that has been quenched after simultaneously forging, and tempering the metal automotive part and bake-hardening the deposited powder to form a skin film on the surface of the metal automotive part. The surface of the metal automotive part before the powder is powder-coated thereon is a work-hardened material surface that has not been subjected to a chemical conversion filming treatment.

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Patent Owner(s)

Patent OwnerAddress
NTN CORPORATIONOSAKA-SHI OSAKA 550-0003

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chokyu, Masato Shizuoka, JP 4 6
Hayashi, Hiromi Shizuoka, JP 30 289
Iwamoto, Takafumi Shizuoka, JP 22 162
Suzuki, Shintaro Shizuoka, JP 138 1713
Yoshida, Kazuhiko Shizuoka, JP 87 908

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