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Well...I will try to keep this as short and sweet as possible. I am VERY new to Tig welding. But am lucking to have one of the best in my industry close. He has recommended that I look into getting an older analog machine...as most old timers do. Everything that I will be welding is either A356 or C355 Al Domestic V8 Cylinder head castings (25-35lbs).1. I have found a Miller Delta-arc HF that seems in real good condition. What is the life span of this type of machine? Should I just get a new Synch 350? I am concerned about parts availibility on a machine of this age. Of course the old timers tell me these machines are "bullet proof"... is anything bullet proof after 30 years? Capacitors? Relays? Transformers?2. What process is normally used in todays industry? I hear a good bit about DC/Straight w/ Hellium? What works best and why?3. I know this is going to be a tough learning curve... Any advise for a semi newbie? I have welded steel before... and that did not seem much harder than MIG. But with casting repair it seems that you have to be half scientist / half welder to get it right.Thanks for your time guys!Dennis
Reply:1-Is this repair welding on old heads or welding on new heads? --Welding inside the ports, or what?2-The old timers are always right--just ask any of them!....However, they probably haven't had any experience with a high powered, 300 amp +, inverter (Miller, Thermal Dynamics)These inverters can do much more, much better, much faster than a transformer-based machine;without using Helium mixes.(There's scores of folks on this site--that don't believe this as well---but, they've never put it to the test--I have, in a shop business, including a 400 amp Airco, 400 amp Lincoln, Lincoln 350 Squareware, then finally, a 300 amp T-D inverter.)Blackbird
Reply:new and old. If old...it is as clean or cleaner then new.ports, chambers, decks...everywhereThis guy has many welders...If I recall the one he uses is 850 amp? it is HUGE, like 6x6x4. Must be from the 50's. |
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发表于 2021-8-31 23:53:12