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dimensional change resulting from shot peen
i have a 1.3713/1.3724 dia. pin with a .875 dia. hole thru it. the material is 15-5 heat treat 180/200 ksi (hrc40-43). the part is to be shot peened with shot # 170-330, intensity=.016a2, coverage=200%. how much dimensional change on the dia. may i expect?
cougfan..
i doubt you will get more than 0.0004" change in this part on the od (barely measureable with conventional micrometers).
caution: carefully deburr/radius pin edges and the thru-hole "lips", 0.01"--0.03"r (0.02"-0.03"r recommended) to avoid "roll-over/distortion"... (slight bulging occurs where sharp edges are crushed down/out by the shot-blast stream).
also, don't expect much of a peening affect in the holes beyond about 0.37 from ends... too deep.
regards, wil taylor

2009-09-05, 10:37 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	dimensional change resulting from shot peen dimensional change resulting from shot peen i have a 1.3713/1.3724 dia. pin with a .875 dia. hole thru it. the material is 15-5 heat treat 180/200 ksi (hrc40-43). the part is to be shot peened with shot # 170-330, intensity=.016a2, coverage=200%. how much dimensional change on the dia. may i expect? cougfan.. i doubt you will get more than 0.0004" change in this part on the od (barely measureable with conventional micrometers). caution: carefully deburr/radius pin edges and the thru-hole "lips", 0.01"--0.03"r (0.02"-0.03"r recommended) to avoid "roll-over/distortion"... (slight bulging occurs where sharp edges are crushed down/out by the shot-blast stream). also, don't expect much of a peening affect in the holes beyond about 0.37 from ends... too deep. regards, wil taylor __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]