Calguns.net  

Home My iTrader Join the NRA Donate to CGSSA Sponsors CGN Google Search
CA Semiauto Ban(AW)ID Flowchart CA Handgun Ban ID Flowchart CA Shotgun Ban ID Flowchart
Go Back   Calguns.net > INTERESTS AND ACTIVITIES > Gunsmithing & How To
Register FAQ Members List Calendar Mark Forums Read

Gunsmithing & How To Pro, Amateur & WECSOG and Tutorials, Guides & OLL Build Instructions

Reply
 
Thread Tools Display Modes
  #1  
Old 01-04-2008, 8:52 AM
redneckshootist's Avatar
redneckshootist redneckshootist is offline
In Memoriam
 
Join Date: Mar 2006
Posts: 1,933
iTrader: 12 / 100%
Default heat treating question

whats the best way to heat treat an ak flat reciver after it is bent?
__________________
07 FFL Woodland, CA
please call Norse Armory 530-661-0900 for all questions regarding the gun shop.
you can also email me direct at MValentine@norsearmory.net
Reply With Quote
  #2  
Old 01-04-2008, 10:51 AM
FEDUPWBS's Avatar
FEDUPWBS FEDUPWBS is offline
Senior Member
 
Join Date: Oct 2006
Location: Fresno
Posts: 2,217
iTrader: 69 / 100%
Default

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.
__________________
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
Reply With Quote
  #3  
Old 01-04-2008, 12:15 PM
redneckshootist's Avatar
redneckshootist redneckshootist is offline
In Memoriam
 
Join Date: Mar 2006
Posts: 1,933
iTrader: 12 / 100%
Default

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
__________________
07 FFL Woodland, CA
please call Norse Armory 530-661-0900 for all questions regarding the gun shop.
you can also email me direct at MValentine@norsearmory.net
Reply With Quote
  #4  
Old 01-04-2008, 12:28 PM
FEDUPWBS's Avatar
FEDUPWBS FEDUPWBS is offline
Senior Member
 
Join Date: Oct 2006
Location: Fresno
Posts: 2,217
iTrader: 69 / 100%
Default

Dont forget to do the ejector outside the gun! OOPS!
__________________
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
Reply With Quote
  #5  
Old 01-04-2008, 1:37 PM
vandal vandal is offline
Senior Member
 
Join Date: Sep 2007
Location: Walnut Creek
Posts: 2,144
iTrader: 154 / 100%
Default

What would be the harm of doing it once it is welded in, if you annealed any extra area you accidentally heat treated?

Quote:
Originally Posted by FEDUPWBS View Post
Dont forget to do the ejector outside the gun! OOPS!
Reply With Quote
  #6  
Old 01-04-2008, 2:03 PM
FEDUPWBS's Avatar
FEDUPWBS FEDUPWBS is offline
Senior Member
 
Join Date: Oct 2006
Location: Fresno
Posts: 2,217
iTrader: 69 / 100%
Default

Takes lots of gas cause the receiver acts as a heat sink. but not the end of the world
__________________
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
Reply With Quote
  #7  
Old 01-04-2008, 8:59 PM
hawk81 hawk81 is offline
Banned
 
Join Date: Dec 2007
Posts: 1,499
iTrader: 29 / 100%
Default

You will need to get it to about Rockwell 40 c. I hope you have a hardness checker.
Reply With Quote
  #8  
Old 01-05-2008, 9:48 PM
M. Sage's Avatar
M. Sage M. Sage is offline
Moderator Emeritus
CGN Contributor - Lifetime
 
Join Date: Jul 2006
Location: San Antonio, TX
Posts: 19,762
iTrader: 1 / 100%
Default

What kind of steel are these made of that they aren't already about 40C? That's not terribly hard.
__________________
Quote:
Originally Posted by Deadbolt View Post
"We're here to take your land for your safety"

"My Safety?" *click* "There, that was my safety"
http://www.huntfishadventures.com/images/nra.gifNRA Member
Reply With Quote
  #9  
Old 01-05-2008, 10:15 PM
jumbopanda's Avatar
jumbopanda jumbopanda is offline
Calguns Addict
 
Join Date: Aug 2006
Location: Northridge
Posts: 7,449
iTrader: 151 / 100%
Default

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.

Last edited by jumbopanda; 01-05-2008 at 10:23 PM..
Reply With Quote
  #10  
Old 01-06-2008, 10:26 AM
M. Sage's Avatar
M. Sage M. Sage is offline
Moderator Emeritus
CGN Contributor - Lifetime
 
Join Date: Jul 2006
Location: San Antonio, TX
Posts: 19,762
iTrader: 1 / 100%
Default

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.
__________________
Quote:
Originally Posted by Deadbolt View Post
"We're here to take your land for your safety"

"My Safety?" *click* "There, that was my safety"
http://www.huntfishadventures.com/images/nra.gifNRA Member
Reply With Quote
  #11  
Old 01-06-2008, 11:37 AM
hawk81 hawk81 is offline
Banned
 
Join Date: Dec 2007
Posts: 1,499
iTrader: 29 / 100%
Default

Some metals require thermal quench and some require liquid quench. The chemistry of the metal dictates the type of heat treatment necessary to achieve the required hardness and toughness of the material.
Reply With Quote
  #12  
Old 01-06-2008, 1:58 PM
FEDUPWBS's Avatar
FEDUPWBS FEDUPWBS is offline
Senior Member
 
Join Date: Oct 2006
Location: Fresno
Posts: 2,217
iTrader: 69 / 100%
Default

Jumbo jst gotcha on that one for my sigline buddy!
__________________
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
Reply With Quote
  #13  
Old 01-06-2008, 7:54 PM
jumbopanda's Avatar
jumbopanda jumbopanda is offline
Calguns Addict
 
Join Date: Aug 2006
Location: Northridge
Posts: 7,449
iTrader: 151 / 100%
Default

Quote:
Originally Posted by FEDUPWBS View Post
Jumbo jst gotcha on that one for my sigline buddy!
Reply With Quote
  #14  
Old 01-06-2008, 11:17 PM
ar15barrels's Avatar
ar15barrels ar15barrels is offline
I need a LIFE!!
 
Join Date: Jan 2006
Location: Van Nuys
Posts: 38,063
iTrader: 88 / 100%
Default

Quote:
Originally Posted by M. Sage View Post
IIRC, there are some steels that you can heat treat without a quench.
Those would be the "A" series steels (A for air hardening).
There are also "O" series steels. (Yep, you guessed it, O is for oil hardening.)
Then there are some "W" series steels. Guess what you quench them in...

There are a whole bunch of different steels designed for specific things.
You have to really know your steels before you figure out how to harden and temper them.
__________________
Randall Rausch

AR work: www.ar15barrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Glock, XD and M&P pistols, Benelli and Remington shotguns: barrel, sight, trigger and receiver work.
Most work performed while-you-wait, evening and weekend appointments available.
Founding member of the CAPRC
Reply With Quote
  #15  
Old 01-07-2008, 4:44 AM
JPglee1's Avatar
JPglee1 JPglee1 is offline
Veteran Member
 
Join Date: Jan 2006
Location: Victorville, high dez, SoCal
Posts: 3,032
iTrader: 5 / 100%
Default

For regular mild steel, or what you'd find in an AK flat, I usually heat it up to a dull cherry red glow, then quench it in USED motor oil...

The carbon in the used motor oil can actually help to surface harden the steel and it can also turn it a darker color (which I like)

I have also used warm salt water as a quench.... When you DO quench it, be sure to have a large volume of liquid, as it WILL heat it up, and also be sure to move it around as you're quenching it. if you leave it in one spot, especially with water, it can cause problems with your hardening.

Its kinda hard to explain without showing someone... one of those "gotta see it" things to truly explain the ins and outs.


J
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -8. The time now is 12:46 AM.




Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Proudly hosted by GeoVario the Premier 2A host.
Calguns.net, the 'Calguns' name and all associated variants and logos are ® Trademark and © Copyright 2002-2016, Calguns.net an Incorporated Company All Rights Reserved.