welding 4130 chrome molly to mild steel tubing
welding 4130 chrome molly to mild steel tubing
(OP)
What steps do I take to weld 4130 c/m with a wall of .225 to
mild steel with a wall of .190 ? C/M starts out as .375 wall
turned down to .228 wall in 6" of a 24" tube with a.003 press
fit into a tube of mild steel with a ID of 2.700 Depth of fit
is 6 " . This will be TIG welded.... What filler rod would
work best... elongation...dilution.... etc...
Thanks for you help....
mild steel with a wall of .190 ? C/M starts out as .375 wall
turned down to .228 wall in 6" of a 24" tube with a.003 press
fit into a tube of mild steel with a ID of 2.700 Depth of fit
is 6 " . This will be TIG welded.... What filler rod would
work best... elongation...dilution.... etc...
Thanks for you help....





RE: welding 4130 chrome molly to mild steel tubing
RE: welding 4130 chrome molly to mild steel tubing
The slow cooling can be accomplished by quickly wrapping in a fiberglass blanket or if you have many to do rig up a box filled with Vermiculite or Pearlite to stick the weldment in after welding.
Note:
The old fashion way was to stick it in bucket of lime or wrap in Asbestos cloth.