Invention Grant
- Patent Title: Cast product having aluminum-based film and process for producing the same
- Patent Title (中): 具有铝基膜的铸造产品及其制造方法
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Application No.: US11794849Application Date: 2006-01-06
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Publication No.: US08012597B2Publication Date: 2011-09-06
- Inventor: Botaro Watanabe , Takeshi Hirama
- Applicant: Botaro Watanabe , Takeshi Hirama
- Applicant Address: JP Tokyo
- Assignee: Keihin Corporation
- Current Assignee: Keihin Corporation
- Current Assignee Address: JP Tokyo
- Agency: Nelson Mullins Riley & Scarborough LLP
- Agent Anthony A. Laurentano
- Priority: JP2005-002723 20050107
- International Application: PCT/JP2006/300114 WO 20060106
- International Announcement: WO2006/080183 WO 20060803
- Main IPC: B32B3/10
- IPC: B32B3/10 ; B32B3/24 ; B32B15/04 ; B32B15/20 ; B05D1/02 ; B05D1/12
Abstract:
In a throttle body, a passive film and a corrosion-resistant film are stacked in that order on a substrate of aluminum. The passive film has a concave part on its corrosion-resistant film side. A metal layer is provided in the concave part. In shot blasting, upon collision of a blasting material against the corrosion-resistant film, a part of the blasting material is separated and adhered onto the resultant concaves to form the metal layer. For example, aluminum having a purity of not less than 98% is selected as the blasting material.
Public/Granted literature
- US20090269607A1 Cast product having aluminum-based film and process for producing the same Public/Granted day:2009-10-29
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