Re: Hardness - Saab 900 Bulletin Board - Saabnet.com
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Re: Hardness
Posted by S Carlson [Email] (more from S Carlson) on Wed, 9 May 2018 19:53:50
In Reply to: Re: Hardness, S Carlson, Wed, 9 May 2018 15:02:48
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Confirmed - they are case hard. Case depth doesn't seem to be that much. I can break through the case with a file, and on a milled surface it's soft right to the edge.
So that's good! I will flame-heat 4140 steel nuts I have made, to nonmagnetic temp and try to keep the heat on one side. I will quench in used motor oil, and temper at 500F in the oven for an hour or two. Then I can anneal just the part that should be peened, if necessary. I think that should do it.
posted by 75.69.61...
Posts in this Thread:
- Pinion nut rebuild, S Carlson, Thu, 3 May 2018 09:11:45
- Who Rebuilds these days?, Ed Vert, Sun, 6 May 2018 05:29:05
- Re: Pinion nut rebuild, S Carlson, Fri, 4 May 2018 11:12:50
- Re: Pinion nut rebuild, Notnoel , Fri, 4 May 2018 07:42:02
- Re: Pinion nut rebuild, Roger D , Thu, 3 May 2018 13:27:21
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