Tempering
- tornitore45
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Tempering
What happens when one forget the part to be tempered in the oven (420F) for a couple hours?
Asking for a friend.
Asking for a friend.
Mauro Gaetano
in Austin TX
in Austin TX
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Re: Tempering
Should be fine unless the data sheet for the material states a maximum tempering time.
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Re: Tempering
This is my understanding as well. Normally its the temperature that's important, not the time (except that the time must be long enough).Magicniner wrote: ↑Fri Dec 14, 2018 7:52 am Should be fine unless the data sheet for the material states a maximum tempering time.
- tornitore45
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Re: Tempering
Thanks. The part, a square drive for sockets, is still file hard.
Mauro Gaetano
in Austin TX
in Austin TX
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Re: Tempering
That sounds more like the temperature wasn't correct if that's not the hardness you wanted.tornitore45 wrote: ↑Fri Dec 14, 2018 12:06 pm Thanks. The part, a square drive for sockets, is still file hard.
- tornitore45
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Re: Tempering
No. I was afraid to have drawn to much hardness due to prolonged heating. I want it to be at blue color temper, hard but not tool hard.
Mauro Gaetano
in Austin TX
in Austin TX
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Re: Tempering
Tempering temps depend on the material itself, and will vary by several hundred degrees for the same hardness in different materials. 420 is pretty low for a lot of them.
Re: Tempering
Search Amazon for:
Tempilstik sets
Multiple temperature sticks are available.
I assume there are other brands of similar (possibly better?) products.
~RN
Tempilstik sets
Multiple temperature sticks are available.
I assume there are other brands of similar (possibly better?) products.
~RN
- tornitore45
- Posts: 2077
- Joined: Tue Apr 18, 2006 12:24 am
- Location: USA Texas, Austin
Re: Tempering
Major screw up on my part. I wanted a blue temper like springs, my toaster oven go as high as 550F and I will settle for that.
I set the temperature to 420F based on faulty memory.
No wonder the part (O1 drill rod) was still file hard.
Will retemper at 550F and set a timer so I do not forget. Wife is not trilled with the use of the toaster oven, you know how possessive they get about the kitchen, even if there is no issue heating a piece of clean steel instead of a croissant.
I set the temperature to 420F based on faulty memory.
No wonder the part (O1 drill rod) was still file hard.
Will retemper at 550F and set a timer so I do not forget. Wife is not trilled with the use of the toaster oven, you know how possessive they get about the kitchen, even if there is no issue heating a piece of clean steel instead of a croissant.
Mauro Gaetano
in Austin TX
in Austin TX
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Re: Tempering
First there is a piece of clean steel, then you never know where it will end. I think a thrift store might have good deal on a toaster oven.
A man of foolish pursuits, '91 BusyBee DF1224g lathe,'01 Advance RF-45 mill/drill,'68 Delta Toolmaker surface grinder,Miller250 mig,'83 8" Baldor grinder, plus sawdustmakers
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Re: Tempering
If you know what hardness you want to achieve you can look up the temperature/hardness chart for the steel you are using.