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Re: shot pein ?
[Re: AndyF]
#2722136
12/06/19 09:25 PM
12/06/19 09:25 PM
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Joined: Aug 2003
Posts: 43,230 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,230
Bend,OR USA
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Years ago (1988 or so) I had three different new sets of forged steel H beam rods for BB and 426 Hemi motors I wanted magged, a set of Eagles, a set of CAT and a set of Carillo for the hemi. I took all three sets of rods to my crankshaft grinder, Wilson Bros Grinding in Ontario, CA and ask Ron if he could tell me what brand they where (none of them where in the boxes they came in and none of them had markings that he could see when I placed them on the bench before he came over to look at them. he said that the one set was Carillo and when I ask him how he knew that he said because they where the only set double shot peened I didn't see that but he did
Last edited by Cab_Burge; 12/06/19 09:26 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: shot pein ?
[Re: moparx]
#2722166
12/06/19 10:57 PM
12/06/19 10:57 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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when shot peining items, what is the guage of shot used, and the typical air pressure ? as always, TIA. I use to shot peen the transverse torsion bars back when we were developing the old F-body... the pressure and shot size varied based on the material you were working with.. with those torsion bars if they werent shot peened they would explode at the bend every time when I would try preload then... the shot peen was a stress reliever...we tried multiple sized shot and even different sized shot on a single bar.. the peening also compressed the steel to assist the strength of the steel... also you can double peen or more... I also use to shop peen (douple shot peen) my viper rods
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Re: shot pein ?
[Re: mopardamo]
#2722207
12/07/19 12:39 AM
12/07/19 12:39 AM
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Joined: Jan 2003
Posts: 3,505 DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,505
DFW
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Hey 340, Wiki first states that it adds compressive stress then later says relives stress. Thats the stuff that i'd like to get to the bottom to. Which one add/relieve? An old mentor of mine that was McDonnell Douglas ball bearing top dog said it added stress. I'm on same page as Transman. There are several good answers here and I didn't write the Wiki page. I'm thinking if you have some residual tensile stresses on the surface of a part, then peening would add compressive stresses to relieve the tensile stresses. My SWAG on the matter. Now I'm wondering how a machinist can tell if a part was double shot peened? Answer: https://www.shotpeener.com/library/pdf/2013029.pdf
Last edited by mr_340; 12/07/19 12:49 AM.
Floyd Lippencott IV
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Re: shot pein ?
[Re: moparx]
#2722314
12/07/19 02:44 PM
12/07/19 02:44 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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So this thread then begs the question, shot peen then cryo, or cryo then shot peen?
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: shot pein ?
[Re: jcc]
#2722342
12/07/19 04:29 PM
12/07/19 04:29 PM
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Joined: Oct 2005
Posts: 8,882 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,882
Ontario, Canada
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So this thread then begs the question, shot peen then cryo, or cryo then shot peen? Can we just take him out a shoot him ???
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