| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for efficiently manufacturing a highly-durable impeller, and to provide a device for manufacturing the impeller, the highly-durable impeller, and a supercharger. <P>SOLUTION: In the method for manufacturing a compressor impeller 21 having a hole 24 into which a rotary shaft is fitted, a load which generates a compressive residual stress is applied to the compressor impeller 21 by radially pressing the compressor impeller 21 from the inside of the hole 24 by a first pressing member 31, and by pressing the compressor impeller 21 from both axial sides by a second pressing member 32. <P>COPYRIGHT: (C)2013,JPO&INPIT |
