WeTheArmed.com

Information and Education => Gunsmithing and Weapon Repair => Topic started by: Roper1911 on March 04, 2017, 04:56:12 pm

Title: spring manufacturing?
Post by: Roper1911 on March 04, 2017, 04:56:12 pm
I've been chatting with Axel Müller (troubleshooterberlin, the guy who built the top loading Remington 11.) about a problem he had with his custom hammer springs taking a set after a few rounds and needing to be replaced. I sent him information on spring stress relief to keep the springs from setting so quickly and he told me that it didn't work.
I for one am stumped.
Title: Re: spring manufacturing?
Post by: freeman1685 on March 04, 2017, 05:02:06 pm
It's likely a tempering issue.  The metal isn't being heated hot enough, or long enough to get a sufficient temper.
Title: Re: spring manufacturing?
Post by: coelacanth on March 04, 2017, 10:33:16 pm
Probably as much a design flaw as it is a tempering issue.   :hmm   You have to design any part to work withing the performance parameters of the chosen material, otherwise you can expect a high failure rate.   Spring tempered steel doesn't like to be stressed beyond the limits imposed by its alloy composition and shape. 
Title: Re: spring manufacturing?
Post by: tokugawa on March 04, 2017, 11:00:32 pm
 "practical machinist forum" would be a good place to start asking. There are some very sharp metallurgists/machinists there.
Title: Re: spring manufacturing?
Post by: JesseL on March 07, 2017, 04:18:47 pm
Probably as much a design flaw as it is a tempering issue.   :hmm   You have to design any part to work withing the performance parameters of the chosen material, otherwise you can expect a high failure rate.   Spring tempered steel doesn't like to be stressed beyond the limits imposed by its alloy composition and shape. 

^THAT

Springs are tricky little SOBs. Strength is determined by the thickness of the wire, travel (and consequently where you push them past the elastic limit) is a matter of how many coils you have.

Odds are he needs more coils on his spring, and if that won't fit he needs to make room for a longer spring.
Title: Re: spring manufacturing?
Post by: Roper1911 on March 07, 2017, 11:51:40 pm
it's a torsion spring, so to get more coils he'd need thinner wire...
Title: Re: spring manufacturing?
Post by: JesseL on March 08, 2017, 12:33:27 pm
it's a torsion spring, so to get more coils he'd need thinner wire...

Can he go to a larger diameter with the same number of coils? It's basically about using a longer wire.
Title: Re: spring manufacturing?
Post by: Roper1911 on March 08, 2017, 01:29:28 pm
Maybe? I think he's using 2mm wire...