Why you should wear eye protection.

Stevo

Stevo

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I guess I need to talk to my welder/millwright buddy about how we can do this differently so I don't take a bolt handle to the face again.

Before:

IMG_2312aMedium-1.jpg


After:

bolthandle001Medium.jpg


bolthandle004Medium.jpg
 
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YIKES! Glad you okay! The fact if failed is very surprising! I would not have thought that there would be huge forces on that bolt handle in recoil...

Cheers
Jay
 
After welding he should of annealed the part then temper it, Single pass welds typically create brittle metal do to the surrounding metal quickly drawing the heat from the weld zone, basically quenching it, annealing reverses the quench, the temping will reveive the internal stresses the weld created,
 
Redlight35 said:
I hope that you didn't get hurt! I'm sure Frayneo could fix that for you in no time!
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I thought he gave that up?

matty86suk said:
After welding he should of annealed the part then temper it, Single pass welds typically create brittle metal do to the surrounding metal quickly drawing the heat from the weld zone, basically quenching it, annealing reverses the quench, the temping will reveive the internal stresses the weld created,
Click to expand...

He's a B-Pressure rated journeyman, so I know he has the knowledge. I'm not exactly sure of what process he used when he did the work.
 
Interesting... maybe that's why it's a solid piece originally :)
I wonder if threading would be a better alternate option.
 
Shoulda

drilled and tapped with red locktite -
that damned red NEVER comes off xept fer 400 degrees fer 4 minutes ---
 
YIKES! Glad you okay! The fact if failed is very surprising! I would not have thought that there would be huge forces on that bolt handle in recoil...

Really? What about suddenly stopping on the back stroke then again on the forward closing stroke? Remember the carrier stops right away but the handle would have a tendency to keep going!
Scott
 
Alright, I'm not changing the side I put my handle on. I'll just reach across. It's less hassle. I guess I'll also start wearing my eye protection faithfully.
 
Same sort of thing happened with my first SKS, only in my case only the knob at the end of the cocking handle detached. Luckily (or unluckily) it happened as I was pulling on it after reloading, so all it did was the sharp edge nicked my finger. I can't imagine the sort of damage that little thing <could> have done had it failed during firing.
 
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I guess I never did say it, but I was wearing eye protection and there was no injury. The bolt isn't moving that fast so it didn't even leave a red mark on my cheek bone.
 
look's like he used TIG...
and there was some oil in the cracks...
it happens... possibly also had issue with not wanting to drive alot of heat into the parts or it could have been filled a touch more, but thats just my speculation from past experiance.

theres a reason test pilot's wear parachutes :D
 
lack of annealing.... I would personally have skipped the weld entirely, and had it tapped and fitted with a threaded handle, with red loctite.
 
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