Joining 4142 with EB welding
Joining 4142 with EB welding
(OP)
I am trying to join ASTM A514 or 4142 to its self by EB welding. I have questions
1.) Is it required to pre prior to welding and post heat after welding?
2.) If the pre is 450 deg F does it have to be 450 or in transering from the oven and parts are 375 deg F is that good enough?
3.) Post heating does it have to happen immediatly after turning off the beam or can tha parts cool to 200 deg F priot to heating up to 600 deg. F?
4.) I know this material is prone to cracking due to hardening at the weld joint. Should your heating be in the Vacuum chamber?
1.) Is it required to pre prior to welding and post heat after welding?
2.) If the pre is 450 deg F does it have to be 450 or in transering from the oven and parts are 375 deg F is that good enough?
3.) Post heating does it have to happen immediatly after turning off the beam or can tha parts cool to 200 deg F priot to heating up to 600 deg. F?
4.) I know this material is prone to cracking due to hardening at the weld joint. Should your heating be in the Vacuum chamber?





RE: Joining 4142 with EB welding
(1) What is the thickness at the weld joint? This will determine your PWHT requirement. What is the original heat treatment of 4142?
(2) Your stated preheat requirement looks acceptable even with the drop in temperature to 375 deg F. I would try to shoot for 400 deg F minimum prior to EB welding.
(3) No, post weld heat treatment (PWHT) does not need to be performed immediately after welding.
4). No
RE: Joining 4142 with EB welding
RE: Joining 4142 with EB welding
RE: Joining 4142 with EB welding