2007-04-27 21:27:52 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
No, each can have very specific goals and perform different functions. Under limited circumstances I think they could be used the same, but mostly not.
2007-04-28 00:53:49 · answer #1 · answered by mikey 5 · 0⤊ 0⤋
The purpose of preheating is help prevent weld cracking by having the material at a higher temp. Post weld treatment will not do this. It is kind of like pouring boiling water into a glass bowl that has been refrigerated. It is going to crack, so anything you do later is just damage control. The key is to prevent the damage in the first place.
2007-04-28 06:30:44 · answer #2 · answered by Paul W 1 · 0⤊ 0⤋
No.
You have to do each separately and in the proper sequence.
First Preheat, then Weld, then Postweld Heat Treat.
2007-04-28 09:03:38 · answer #3 · answered by gatorbait 7 · 0⤊ 0⤋
no it should not be, pre heat is done to raise the temp of job & post heat to release the stresses developed during the welding, these can not be interchanged
2007-04-28 21:41:49 · answer #4 · answered by cool guy 3 · 0⤊ 0⤋
No, since the properties are variable.
2007-04-27 21:37:27 · answer #5 · answered by tdrajagopal 6 · 0⤊ 0⤋