The process is EB welding. The material thickness is .675 with backing materials to catch the beam. It is is a butt joint configuration. The materials condition from what I know is primarily tempered martensite, grain size is per astm E 112 6 or finer. The material is called 4330V to 4330V. No...
I would like to weld 4330 to 4330. What types of filler materails are avaiable that will give me the sames streight requirements as the base material or the best strenghts. I don't plan to preheat but I am going to post heat at 1000 deg F. It is the hot tearing in the material that has my in a...
They are critical load carrying welds. I was planning to try preheating using a defocused beam using thermal couples in various locations on the samples. If I try to heat them in an oven I will lose most of the heat getting into the chamber and pumping down. I plan to weld using a narrow beam is...
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...
Yes both welds are EB. I will check on the material to verify its original condition but the part have been machined would that change heat treatment condition?
I have two different joint configurations
1st joint is a overlap joint with a .200 deep weld on a round 5 1/2 diameter.
2 nd weld is 100% penetration with .400 deep weld that joins 3 details together. This diameter is 4 3/8 round. An end cover and two layers inner and outer (one slides over...
Eb welding of material AISI 4340 in accordance with ASTM A519 does this require a pre heat? Also after EB welding does this material require post heat and what at temperatures is required?
Is the defocused beam on the part weld joint or just on an area that is going to be further machined. I assume this heats the entire part. I would suspect that a TC would have to be attached to the part near the weld joint. The parts in 22" long with 1/2 depth of weld with 100% penetration. If...
The B/P say per note 1 for material and note one says
A. A514, HSS. Then note 1 says
B. 4142 heat treat 28/32 hrc.
I asked and he said the material was in plate form that is all he said. What do you mean when you say , I would not PWHT? Thanks Mike
The material thickness is .500 with 100% penetration over about 22" length basically 4 weld joints joining a box. Their is a .060 step joint behind the weld beam so it does not melt into the inner parts of the box. It might anyways. The inside of the box has Parallelism of .010 to a datum so the...
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...
