Copper-clad steel tube manufactured by high-speed welding
A technology of copper-clad steel pipes, which is applied in the field of copper-clad steel pipes, can solve problems such as infirmity and welding of copper-clad steel pipes, and achieve the effects of reducing deformation, ensuring welding quality, and good corrosion resistance
Inactive Publication Date: 2012-07-18
张晓明
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Problems solved by technology
[0009] In the manufacture of copper-clad steel pipes, production processes such as uncoiling and welding of the pipe making machine are required. However, the traditional induction welding method cannot weld copper-clad steel pipes, because the melting point of copper is lower than that of carbon steel, and the melting point of copper steel is completely different. Therefore, how to weld the longitudinal seam of the copper-clad steel pipe rolled by the plate rolling machine under the condition that the steel in the copper-clad steel pipe is completely covered by copper will be a solution to the wide application of copper-clad steel pipe. main problem
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] After a lot of experiments, the present application has selected the following preferred steps and parameters, that is, a copper-clad steel pipe made by high-speed welding, characterized in that the thickness of the steel layer is 0.6 mm, and the thickness of the copper layer on the surface of the steel layer is 50 μm. The welded longitudinal seam is 0.8-1.0mm, and the copper-clad steel pipe is made by the following steps:
[0019] 1) A 50μm copper layer is mechanically rolled on a single surface of a 0.6mm thick carbon steel plate;
[0020] 2) The copper-clad steel plate is formed into a copper-steel composite pipe through a pipe making machine, and there is a longitudinal seam extending along the pipe axis at this time;
[0021] 3) The filling material adopts copper and copper alloy welding wire, the arc welding process adopts cold metal transition, the welding speed adopts 6m / min, the welding shielding gas adopts pure argon, and the longitudinal seam gap is controlle...
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Abstract
The invention relates to a copper-clad steel tube manufactured by high-speed welding, wherein a layer of copper layer with the thickness of 50 microns is mechanically rolled on a single surface of a carbon steel plate with the thickness of 0.6mm; then a copper-steel composite tube is formed from the copper-clad steel plate by a tube machine, but at this time the copper-steel composite tube is provided with a longitudinal joint axially extending along the tube; a filling material adopts copper and copper alloy solder wires, the arc welding process adopts a cold metal transition method, the welding speed is 6m / min, a welding shielding gas adopts pure argon, and a longitudinal joint gap is controlled between 0.8mm to 1.0mm; the high-speed continuous welding is performed on the longitudinal joint of the copper-steel composite tube formed through a plate coiling machine. According to the copper-clad steel tube, the processing speed, particularly the speed of the welding step, is increased, and the strength and the corrosion resistance of the material are guaranteed.
Description
[0001] technical field [0002] The invention relates to a copper-clad steel pipe made by high-speed welding, in particular to a copper-clad steel pipe made by high-speed electric arc lead welding. [0003] Background technique [0004] At present, the global copper resources are decreasing day by day, and the price of copper remains high. Refrigerator and air-conditioning enterprises, which are large users of copper pipes, have been looking for low-cost, reliable substitutes. In order to make the products competitive in price, they are also actively developing various A new product. Various new technologies, new processes, and new materials emerge in an endless stream. At present, various copper tubes are used instead of materials in air conditioners. [0005] Copper-clad steel pipe adopts advanced metal composite processing technology, which is coated on the inner and outer surfaces of precision seamless steel pipe, and forms an interatomic bond between steel and copper....
Claims
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IPC IPC(8): F16L9/02B23P15/00B23K1/00B23K35/30
Inventor 张晓明
Owner 张晓明