M14s and M1As
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Originally Posted By: Shannow
have they stopped forging things in industry?
I curious to know how they've "modernized" smashing red hot metal into shape?
have they stopped forging things in industry?
I curious to know how they've "modernized" smashing red hot metal into shape?
http://www.ald-dynatech.com/pdf/Vacuum_Isothermal_Forging.pdf
Turbine rotors are still forged...after ultrasuperclean castings, they still heat them, and smash them into shape...
Turbine rotors are still forged...after ultrasuperclean castings, they still heat them, and smash them into shape...
Better check the varnish on your wheels. They might need another coat.
Originally Posted By: bsmithwins
Casting can be a perfectly fine way to produce stressed metal parts, if the part was engineered with casting as the manufacturing process.
Simply substituting a cast part for one where the original design called for a forging can mean problems or that you're relying on the safety margins that were built into the original design.
It's similar to substituting screws for rivets. Both are fasteners but they have different strengths and weaknesses.
BSW
Do not know if it is true , but I have read that the M1 Garand & M-14 receivers are 5 times as strong as they need to be . Also , just enough harder than the bolt so the bolt ( a replaceable part ) wears out and the receiver wears little .
I have also read the M1A cast receiver is only 2 times as strong as it needs to be .
You pay your money and you make your choices . If you are concerned , hunt up a Chi-Com Norinco or Polytech receiver .
Casting can be a perfectly fine way to produce stressed metal parts, if the part was engineered with casting as the manufacturing process.
Simply substituting a cast part for one where the original design called for a forging can mean problems or that you're relying on the safety margins that were built into the original design.
It's similar to substituting screws for rivets. Both are fasteners but they have different strengths and weaknesses.
BSW
Do not know if it is true , but I have read that the M1 Garand & M-14 receivers are 5 times as strong as they need to be . Also , just enough harder than the bolt so the bolt ( a replaceable part ) wears out and the receiver wears little .
I have also read the M1A cast receiver is only 2 times as strong as it needs to be .
You pay your money and you make your choices . If you are concerned , hunt up a Chi-Com Norinco or Polytech receiver .
Again, the JRA forged receiver M14s are about the same price as the Springfield M1A.
So, at the same cost, why wouldn't I choose the forged one?
So, at the same cost, why wouldn't I choose the forged one?
Originally Posted By: WyrTwister
Do not know if it is true , but I have read that the M1 Garand & M-14 receivers are 5 times as strong as they need to be. I have also read the M1A cast receiver is only 2 times as strong as it needs to be.
I have heard similar. But like you, have never seen any documentation proving it one way or the other. But it sounds plausible. And if it's true, and you purchase a Springfield M1-A, you are then getting a product that is twice as strong as required. And if that isn't enough, perhaps those forged rain gutters are looking "better".
Do not know if it is true , but I have read that the M1 Garand & M-14 receivers are 5 times as strong as they need to be. I have also read the M1A cast receiver is only 2 times as strong as it needs to be.
I have heard similar. But like you, have never seen any documentation proving it one way or the other. But it sounds plausible. And if it's true, and you purchase a Springfield M1-A, you are then getting a product that is twice as strong as required. And if that isn't enough, perhaps those forged rain gutters are looking "better".
Originally Posted By: hatt
I know when I was buying stainless pipe fittings cast were topped at 1000 psi.
What pressure do they run at?
I know when I was buying stainless pipe fittings cast were topped at 1000 psi.
What pressure do they run at?
Originally Posted By: billt460
I have heard similar. But like you, have never seen any documentation proving it one way or the other. But it sounds plausible. And if it's true, and you purchase a Springfield M1-A, you are then getting a product that is twice as strong as required.
Again, demonstrating that you don't get engineering and safety factors.
forged rain gutters is a silly strawman, and doesn't mask your lack of understanding.
I have heard similar. But like you, have never seen any documentation proving it one way or the other. But it sounds plausible. And if it's true, and you purchase a Springfield M1-A, you are then getting a product that is twice as strong as required.
Again, demonstrating that you don't get engineering and safety factors.
forged rain gutters is a silly strawman, and doesn't mask your lack of understanding.
Stop. Just stop. This whole thing is an idiotic argument. (Then again, why should it be any different than most others here?) It's like arguing that heavy wall copper plumbing pipe is "better" than thin wall...... When you have rubber and plastic hoses connecting your washing machine, dishwasher, and RO system. It doesn't matter.
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I have to agree . And the arguing seems to be mostly for its own sake . Little constructive learning to be had .
I hope I did not come across as just arguing for the sake of its own sake .
I hope I did not come across as just arguing for the sake of its own sake .
Originally Posted By: WyrTwister
I hope I did not come across as just arguing for the sake of its own sake.
You didn't.
I hope I did not come across as just arguing for the sake of its own sake.
You didn't.
I am not saying cast is as strong as forged . I am saying , apparently , a cast SA receiver is good enough .
I am not interested beyond that .
I am not interested beyond that .
Even the forged receivers in M1 Garands are damaged by abuse - caused by ammunition that runs at too high a pressure, or worn springs, and worn parts. Cracked Garand receivers, while rare, do happen. So, a forged receiver is no substitute for the proper care and feeding of a rifle.
And a properly cared for and fed rifle with a cast receiver is probably fine as well...
And a properly cared for and fed rifle with a cast receiver is probably fine as well...
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Modern commercial Springfield bolt and receiver broken while firing commercial ammo. Original thread is here: http://m14forum.com/m14/194627-m1a-national-match-blew-up-catastrophic-failure.html
Finding the blown M1A took less than 5 minutes on google
BSW
Finding the blown M1A took less than 5 minutes on google
BSW
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