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  #1  
Old 01-04-2008, 9:52 AM
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Default heat treating question

whats the best way to heat treat an ak flat reciver after it is bent?
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  #2  
Old 01-04-2008, 11:51 AM
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http://www.akfiles.com/forums/showthread.php?t=14475
MAPP torch is the safest bet. Lots of info here. Also great links. Pm me w/ questions.
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My solar tac grip wrap just slides off if I pull on it... I can tighten it down as much as I can and it will still slide off. I got it for a regular AK PG and it's on a standard romanian bakelite I think PG... What should I do? I kept the mag lock installed just in case this would happen...

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  #3  
Old 01-04-2008, 1:15 PM
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thanks fedupwbs, there was a link at that site that led me to this
http://pookieweb.dyndns.org:61129/AK.../heattreat.htm
it gives a step by step mapp gas heat treatment
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  #4  
Old 01-04-2008, 1:28 PM
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Dont forget to do the ejector outside the gun! OOPS!
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Quote:
Originally Posted by ChrisO View Post
My solar tac grip wrap just slides off if I pull on it... I can tighten it down as much as I can and it will still slide off. I got it for a regular AK PG and it's on a standard romanian bakelite I think PG... What should I do? I kept the mag lock installed just in case this would happen...

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Originally Posted by stphnman20 View Post
What is a FEDUPWBS?

Quote:
Originally Posted by weezil_boi View Post
( Yes, FEDUP... you were right ).Just 1.5 cents
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Old 01-04-2008, 2:37 PM
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What would be the harm of doing it once it is welded in, if you annealed any extra area you accidentally heat treated?

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Dont forget to do the ejector outside the gun! OOPS!
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Old 01-04-2008, 3:03 PM
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Takes lots of gas cause the receiver acts as a heat sink. but not the end of the world
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Quote:
Originally Posted by ChrisO View Post
My solar tac grip wrap just slides off if I pull on it... I can tighten it down as much as I can and it will still slide off. I got it for a regular AK PG and it's on a standard romanian bakelite I think PG... What should I do? I kept the mag lock installed just in case this would happen...

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Originally Posted by stphnman20 View Post
What is a FEDUPWBS?

Quote:
Originally Posted by weezil_boi View Post
( Yes, FEDUP... you were right ).Just 1.5 cents
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  #7  
Old 01-04-2008, 9:59 PM
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You will need to get it to about Rockwell 40 c. I hope you have a hardness checker.
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Old 01-05-2008, 10:48 PM
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What kind of steel are these made of that they aren't already about 40C? That's not terribly hard.
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Old 01-05-2008, 11:15 PM
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Quote:
Originally Posted by M. Sage View Post
What kind of steel are these made of that they aren't already about 40C? That's not terribly hard.
No steel has a hardness of 40C in it's annealed state. 4140 steel is roughly 23 Rockwell C if you don't heat treat it.



If you want to try something a little bit more advanced (although not THAT advanced), check this out:

http://www.akfiles.com/forums/showthread.php?t=25310

http://www.akfiles.com/forums/showthread.php?t=25780

I'd also like to add that in my most recent attempt I used a proper quenching oil and got ZERO warping.


But for most people a simple spot heat treating with a MAPP torch is enough.

http://www.gunsgutsandgod.com/section%20three.htm

Be sure to not that the steel will not glow blue or purple or any of those colors. It simply forms an oxide layer on the surface and you should see a thin ring of it appear as you are heating it. I would recommend removing the heat source every few seconds to check the color. Be sure not to heat the thing too much when tempering and make it too soft. I would rather have it a little bit too hard than too soft.
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Last edited by jumbopanda; 01-05-2008 at 11:23 PM..
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  #10  
Old 01-06-2008, 11:26 AM
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It's been a while since I took a class on that stuff. IIRC, there are some steels that you can heat treat without a quench.

I do remember that the trick to quenching a heat-treat piece without warping it is to dunk that sucker fast. And I remember not to let any part of your body over the container (we used a bucket). Splash-back can really hurt you.
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  #11  
Old 01-06-2008, 2:58 PM
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Jumbo jst gotcha on that one for my sigline buddy!
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Quote:
Originally Posted by ChrisO View Post
My solar tac grip wrap just slides off if I pull on it... I can tighten it down as much as I can and it will still slide off. I got it for a regular AK PG and it's on a standard romanian bakelite I think PG... What should I do? I kept the mag lock installed just in case this would happen...

Quote:
Originally Posted by stphnman20 View Post
What is a FEDUPWBS?

Quote:
Originally Posted by weezil_boi View Post
( Yes, FEDUP... you were right ).Just 1.5 cents
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