S7 Tempering?
S7 Tempering?
(OP)
Is it ok to cool S7 with a fan after removing it from the tempering oven?
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RE: S7 Tempering?
I was once very surprised when a long 6" dia. drop-forged hex of 4340 cracked from one end to the other, when I let it air cool after tempering ~1100 F one cold winter night. Pretty deep crack, which scrapped the shaft.
I still don't know why that shaft cracked.
"You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein
RE: S7 Tempering?
RE: S7 Tempering?
"You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein
RE: S7 Tempering?
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Plymouth Tube
RE: S7 Tempering?
Maui
RE: S7 Tempering?