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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#81
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Spraying used oil
On Mon, 28 Mar 2016 18:12:05 +0200, Tom Ivar Helbekkmo
wrote: Ed Huntress writes: You're talking about old cars and trucks, which is what you have. New ones are vastly better in terms of rust-resistance. Seems they're getting less so, though. A neighbor of mine works at a garage that preps new GM cars for sale. The cars have come across the Atlantic by ship, and the first thing they have to do to them is remove the rust that has accumulated in the weak spots, especially along the welded seam at the bottom of the doors. Didn't used to be that way, he says -- and he suspects it's simply about the quality of the steel. -tih Well, the *quality* of the steel is vastly better than it used to be. It's no more vulnerable to rust -- and probably less so -- than the old stuff. More likely he's running into something about their rust protection. Based on US experience, that's much better than it used to be, too. It must be something specific about the weld seams. They're using continuous welds where they used a lot of spot welds in the past. -- Ed Huntress |
#82
Posted to rec.crafts.metalworking
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Spraying used oil
On Mon, 28 Mar 2016 18:12:05 +0200, Tom Ivar Helbekkmo
wrote: Ed Huntress writes: You're talking about old cars and trucks, which is what you have. New ones are vastly better in terms of rust-resistance. Seems they're getting less so, though. A neighbor of mine works at a garage that preps new GM cars for sale. The cars have come across the Atlantic by ship, and the first thing they have to do to them is remove the rust that has accumulated in the weak spots, especially along the welded seam at the bottom of the doors. Didn't used to be that way, he says -- and he suspects it's simply about the quality of the steel. -tih It's the quality of the assembly, sealing, and finish GM door seams and edges rust - particularly on their lower end vehicles. This is not new, and they don't have to cross the Atlantic for them to rust. A good soaking with an oil product - the lanolin products are better than most but any oil will help - gives them a fighting chance. |
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