Coating processes – Solid particles or fibers applied – Localized different areas produced
Patent
1997-08-12
1999-08-31
Beck, Shrive
Coating processes
Solid particles or fibers applied
Localized different areas produced
427309, 427328, 4273741, 427436, 72 47, 72 53, 473324, 473349, B05D 302, B24C 500
Patent
active
059451572
ABSTRACT:
A method of coating a golf club head under vacuum conditions with an open hanger type shot blasting machine includes the steps of forming a blank of golf club head; grinding the blank to form large pores on the surface of the blank; polishing the blank to form a refined blank containing fine pores on the surface thereof; hanging multiple refined blanks on hangers in an opening hanger type shot blasting machine to rotate and move the blanks into a vacuum rear portion of the machine. Meanwhile, shot blasting material containing mixed shot grit and powdered metal coating material is centrifugally thrown with mechanical throwing arms, so that shot grit strikes and forms numerous deeply depressed pores on the refined blanks. The shot grit quickly leaves the surfaces of the refined blanks due to a reactive force produced during impact of the shot grit on the blanks. The powdered metal coating material, due to a small reactive force at impact on the blanks and a diameter smaller than that of the depressed pores formed by the shot grit on the blanks, tends to deposit in the depressed pores and firmly adhere thereto. With a final hard anodizing treatment, the blanks become finished golf club heads having a hard protective metal coating.
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Huang Tsai Yi
Lee Tsung Chi
Beck Shrive
Chen Bret
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