Tool for preheating cylinder body circular seam before welding and removing hydrogen after welding and using method of tool
A technology of girth seam welding and cylinder body, applied in auxiliary devices, manufacturing tools, welding equipment, etc., can solve the problems of affecting the quality of welding seam, slow heating rate, uneven heating, etc., and achieve wide practical range, uniform heating, combustion full effect
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[0011] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0012] The invention is a tool for preheating before girth welding of container cylinder and eliminating hydrogen after welding, such as figure 1 As shown, its structure includes a burner 1, a concave arc heating pipe 2, an oxygen-enriched gas pipe 3, a support pipe 4, a support 5, a fixing screw 6, a gas pipe 7, an oxygen-enriched air pipe 8, and an air shut-off valve 9. Gas shut-off valve 10; the support pipe 4 is welded in the center of the support 5, and the lower end of the oxygen-enriched gas pipe 3 is assembled inside the support pipe 4, fixed by fixing screws 6, and the height of the oxygen-enriched gas pipe can be adjusted; air shut-off valve 9 The oxygen-enriched air pipe 8 is controlled, and the gas shut-off valve 10 controls the gas pipe 7; The inner cavity at the lowest point is connected, and the lower end of the oxyge...
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