Cactus
Do you preheat the head prior to setting it and then just leave the weedburner on the head thereafter to maintain the heat? I`m thinking that is what you do. I know a welder up here by me who does it that way. But I have heard of a company up by me also,who hires young kids that aren`t much for welders,who don`t preheat,they just lay the weedburner inside the head and start welding. I don`t know how their company stays in business. I just preheat to 300 degrees,quickly set the head,then heat a little again to regain the lost heat, then weld her up quick.[some company men want 200 degrees,some want 300] I`ve never had any problems this way,just looking for better and quicker ways to get her done. I probably shouldn`t be looking for quicker ways,because up here I charge by the hour for the complete job,and that is all I have ever heard as to how it is done here. We don`t charge by the inch while welding,wish I could though. As I said I have never had a problem on any head I have welded on, but I was also wondering how long you usually wait [for the head to cool] before pressure testing? Most of the heads I weld are 13 5/8 inch. Thanks for any input.
Yes, I preheat prior to setting it. If you don't, It will not go on. I usually just preheat, Set it, Weld it, Clear the Hole and then Test it. These Company men here want it done FAST. They would NEVER go for Heating after the Weld. I understand the Concept, It just doesn't work that way in reality
Some of the heads I put on are very sloppy,and I`ve noticed that the casing is actually 13 3/8 inch on these instead of 13 5/8. I always thought 13 5/8 was the standard and excepted size. I done some research on this awhile back and from what I read[if it is true] is that the 13 3/8 size comes from China,it figures. I put a head on a few months back on this 13 3/8 casing,and the casing was out of round by a half inch,kind of egg shaped. When I told the company man he was hot,which I don`t blame him.Well I actually didn`t weld it on this casing,they had to truck in all new and good casing,which caused considerable downtime.The tool pusher actually had me there early doing a bunch of rig work while waiting to do the head. I realized the pipe was bad when I went to slip the cement shoe on prior to welding,and couldn`t understand why it wouldn`t fit. Who would have thought new pipe being out of round. You could tell by looking at it that it was not crushed or anything,just made kind of egg shaped,which explains it if that size does come from China. I like everyone else hate the junk that comes from China.