weldability of 1045 cast steel?

Date 08-01-2008 17:05

Looking for some feedback. We've successfully been GMAW welding A36 and A500 to SAE 1030 caststeel using ER70-S3 both CV Spray and modified pulse spray. Asides from the basic WPS parameter controlls we try to stay away from specilize control such as pre/post heat to save cost and training requirements. Recently we've been asked to explore welding A36 and A500 to SAE 1045 caststeel-now we just left the low carbon safety zone- The question is can we pull this off with only using the lowhydrogen variation to the GMAW process?

Feedback please. Anything to help.

By ravi theCobra (**)

Date 08-01-2008 21:14

I think that your primary concerns are pre and post heat.

You should preheat to at least 225 - 250 deg F and probably keep on some post heat -

Most important is what is the geometry of the two pieces you are putting together ?

By gwg

Date 10-21-2008 02:53

Yes, but you will need to elevate the preheat to 400 deg F minimum, and maintain the preheat, if necessary. After welding, slow cool. Using low hydrogen filler metal will avoid delayed cracking.