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Using welder for painting

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发表于 2021-9-1 01:02:54 | 显示全部楼层 |阅读模式
Has anyone tried to use a DC welder when spray painting to simulate a deep penetrating coat like factory's do ?CBT
Reply:CBT, I'll admit being confused by your question, are you trying to acheive electrostatic paint application?Appreciation Gains You Recognition-
Reply:Yes, You are correct sir.CBT
Reply:Short answer, WON'T WORK!Electrostatic attraction is high voltage very lo current.  Notice how the TV or computer CRT attract dust, that is electrostatic precipitation.If you have sporting blood, you can use the flyback power supply from a TV for electrostatic, as long as you're aware you will be knocked on your *** if you touch the wrong surface. You also need to be aware electrostatic painting requires special metalic paints.Appreciation Gains You Recognition-
Reply:Or, if you really want to take a chance of getting knocked on your keester, you could rig up a power supply using an old neon sign transformer!
Reply:Originally posted by OlPilot Or, if you really want to take a chance of getting knocked on your keester, you could rig up a power supply using an old neon sign transformer!
Reply:Thanks Gentlemen,I'll stick to just using a goood paint.CBT
Reply:10 years ago I heard electro paint systems were about 6K, I have never used one though.  I know couple guys that did, one worked for chicken processor of some kind and there was a lot of mesh.  He said it was the neatest thing you ever see in that you could see the paint go right around the corner.  He said it looked like you were vaccuming smoke.www.urkafarms.com
Reply:I,ve seen it work at a equiptment making plant, but I was so young. It was real cool like you said. The paint booth was open because of no overspray.CBT
Reply:The process has been around for 30+ years, first one I saw was used by a scaffolding rental business, and was a tremendous savings for them.The process itself ain't a whole lot different from the electrostatic cleaner in a residential furnace, where a charged collector accumulates charged crap in the air stream.Powder coating is a slightly different application of the same system.Appreciation Gains You Recognition-
Reply:Thats something I would like to be able to do at home!CBT
Reply:I've seen a similar process some years ago called flocking.  It made neat looking walls in bars and restaurants.  A charged adhesive coat was sprayed on the walls followed by the oppositely charged flock, which was really some sort of uniformly short colored fiber strands, possibly a felt of some sort.   When sprayed, iIt literally flew to the walls and stuck into the adhesive like porcupine quills.  Fuzzy logic hadn't been discovered back then, but fuzzy walls were all the rage.  Guess folks thought they went well with the shag carpet which was in vogue.Once, while on business in the land of fruits and nuts, I came out of my favorite hole-in-the-wall Chinese restaurant, "The Unlucky Dog", in Long Beach, and found a guy parked there with a completely flocked '75 Caddie convertible.   I was gonna' ask him how he waxed it, but finally thought better of it.   No tellin' how easy it might be to set off a California nutsoid.
Reply:Franz,I'm disappointed, oil burner transformer and HV diodes?  Surely you had some connections with that place over in Webster.  They had enough "electrstatically capable" (xerographic) power supplies to last you forever.   All you'd had to do was plug 'em in.Allen T.
Reply:Allen, be careful, nobody is allowed to discuss how Mr Carlson's process works by attracting Xerox dry ink to the charged areas on the sylenium drum.Oddly, when most of that stuff got surplussed, it did NOT go to the usual surplus dealers in this town.John Steeves has an ongoing liquidation contract with the Big X for the machine shops and fab equipment.BTW, someplace around here, I have some POs and congratulatory letters from Haloid to one of their vendor/ machine shops back in the 60s.  Would you believe back in the 60s they were paying someone to dispose of sylenium over by the Delco plant on Lyell Av?Appreciation Gains You Recognition-
Reply:Franz,Good ole selenium.  They always reclaimed most of the selenium, too darned expensive not to.  Once the environmental standards got tough, they started sending all the old photoreceptors to England for reclaim.  Of course, they also recycled all the aluminum blanks and later the nickel.  It would have been nice to have all the $$$ they spent on selenium,  nickel and aluminum.  Incidentally, I used to work on our machines at one of Xerox's biggest aluminum casting suppliers, back in the late 60s, early 70s.  Stahl Specialty Co. - still in business and making lots of different castings for lots of companies.  Old man Stahl was more eccentric than you  are  .  Every time I saw him he would remark about how could someone make such a crappy machine with such quality aluminum castings in it.Allen T.
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