| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of forming a fuel injector clamp utilizing powder metal techniques. <P>SOLUTION: A powder metal charge comprising, in percent by weight, 0.6-0.9 carbon, 1.5-3.9 copper, 93.2-97.9 iron with the balance other elements, is die-compacted to a density of 7.0-7.1 g/cm<SP POS="POST">3</SP>and then pre-sintered at 816-871°C, or 1,500-1,600°F, to form a powder metal blank. The powder metal blank is then lubricated and re-compacted to at least 7.3 g/cm<SP POS="POST">3</SP>and then sintered at 1,121°C, or 2,050°F, to form a final powder metal blank. The fuel injector clamp itself is comprised of a unitary structure of powder metal having a generally cylindrical center portion, with a first wing portion extending laterally from the center portion and a second wing portion extending laterally from the center portion at 180° from the first wing portion. <P>COPYRIGHT: (C)2012,JPO&INPIT |
