Here's my take on the subject......If I were to make just spot welds that are going to be grinded down (like I believe is what Dan is going to do) I would use a MIG welder with .040 stainless wire with a .045 tip. If I cannot find .040 I would use .030 to .045 with the next size tip. My gas mix would be 90% helium- 7.5 argon- 2.5 c02 trimix if can't get that mix would use pure argon. I would set my cfm between 12 and 20 on the gas regulator. Try and buy the most expensive mig welder you can afford in the 220v or a 110 that would go to a high setting and use no extension cord on the welder. Stay away from the ''hi-lo'' mig welder crap. Get one with the multiple settings like ''A B C D E'' on Linlcons. Most important get a wire brush with stainless bristles not the one with brass or plain steel bristles and clean the hell of the area to be welded. GET A PIECE OF SCRAP SHAFT AND ADJUST YOUR SETTINGS AND PRACTICE YOUR WELDS, MAKE SHURE YOU GET ENOUGH PENETRATION. Also make shure that your polarity on the welder is set right for your kind of welding. ( flux-cored welds are made with reverse polarity- ground is + and your gun is neg for gas welding is straight up but follow your welder's specs.) WIRE SPEED IS VERY IMPORTANT. Or do like Papaa said and try a stick welder with a stainless electrode......you might get away with it. This recomendations are not for show quality welds that are going to be used in the aerospace industry but would work for what Dan needs.
I talked to Dan last night and found out he is not trying to weld fin tabs on shafts like I previously thought.
So yes Dan, these are very good procedures for what you are doing. ![]()
Thanks for the great post to him Billy.
Dan, look on Criaig's list for a good self darkening hood or a good flip down. Don't weld in shorts of flip flops unless you want a farmer tan.;)
Cheers, Don