EB welding of 4145H to 4330V
EB welding of 4145H to 4330V
(OP)
I have a challenge to EB weld 4145H to 4130V. The final product must meet ASME 9. The EB weld is .688 deep and has a step joint configuration. I am trying to avoid hot tears after welding. What type of pre and post heating would be best to prevent hot tears if any? Any other ideas would be appreciated. Thanks





RE: EB welding of 4145H to 4330V
For this type of joint design and weld thickness, you will need to preheat at 400 deg F minimum. For post weld heat treatment temperature, you need to determine what the original heat treatment is for the 4145 and 4130V steels. Review the original material mill test report to determine the tempering temperature and post weld heat treat 50 deg F below this temperature.
For production welds, after Section IX procedure qualification, I would recommend you specify nondestructive testing - surface and volumetric – if this is a critical load carrying weld.
RE: EB welding of 4145H to 4330V
RE: EB welding of 4145H to 4330V
RE: EB welding of 4145H to 4330V