Title:
鍛造チタン製圧縮機羽根車を製造するための工程
Document Type and Number:
Japanese Patent JP4732718
Kind Code:
B2
Abstract:
The difficulty of working with titanium has inhibited the adoption of titanium compressor wheels (1) in automotive air boost devices. The invention provides an economical process for the manufacture of titanium compressor wheels (1). A hybrid process is disclosed, wherein a forging process is used to produce a near net shape pattern including filled in areas (10, 11) which must be subsequently machined or milled away to produce the net shape compressor wheel (12). Using the hybrid or two-step process, the technical complexity and time investment in each step is greatly reduced, flaws as associated with the casting technique are eliminated, the process allows itself to be fully automated, the dimensional accuracy of the final product is greater than with conventional techniques, and the strength of the compressor wheel (1) is increased as compared to cast product.
Inventors:
David M Decker
Application Number:
JP2004201309A
Publication Date:
July 27, 2011
Filing Date:
July 08, 2004
Export Citation:
Assignee:
Borg Warner Incorporated
International Classes:
B23P13/00; B21J5/00; F04D29/28; B21J13/02; B21K1/36; B21K3/04; B23P15/00; F04D29/02
Domestic Patent References:
| JP59097734A | ||||
| JP8024982A | ||||
| JP2000005840A | ||||
| JP2003053468A | ||||
| JP2002146499A | ||||
| JP2000263177A | ||||
| JP2002201482A |
Foreign References:
| US6588485 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Koichi Kushida
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Koichi Kushida