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A technology for melting metal and metal, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of increasing arc pressure, welding defects, etc., and achieve the effect of reducing welding seam deformation, improving welding efficiency and wide application range
Inactive Publication Date: 2012-07-18
HARBIN INST OF TECH
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[0004] The present invention aims to solve the contradiction of increasing the deposition rate and inevitably increasing the arc pressure in traditional melting electrode welding and the problem of welding defects caused by high temperature of the arc, and proposes a welding method using molten metal filling
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specific Embodiment approach 1
[0007] Specific Embodiment 1: This embodiment is a method of welding by filling with molten metal, which is specifically completed according to the following steps:
[0008] First put the metal solid from which the oxide film has been removed into the metal melting device, and then heat the added metal solid from which the oxide film has been removed to melt under the protection of a protective gas. The melting device is sprayed onto the base metal to be welded, and the welding process is completed at a welding speed of 0.1m / min to 10m / min.
[0009] The welding method provided by this embodiment by filling with molten metal can increase the deposition speed by changing the flow velocity of the molten metal stream, and the welding efficiency can be significantly improved.
[0010] The welding method using molten metal filling provided by this embodiment does not need to melt the welding wire through an arc as in the traditional fusion welding process, and the generated droplet ...
specific Embodiment approach 2
[0012] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the metal to be welded is steel, pure iron, pure aluminum, pure magnesium, pure copper, pure lead, pure zinc, pure tin, pure titanium , pure zirconium, aluminum alloy, magnesium alloy, titanium alloy, copper alloy or tin-lead alloy. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0013] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the protective gas is argon. Others are the same as in the first or second embodiment.
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Abstract
A method for welding by fused metal filling relates to a welding method, overcomes the contradiction that deposition rate is increased while electric arc pressure is increased as well in conventional fusing pole welding, and the welding defects caused by high temperature of an electric arc. The method for welding by fused metal filling includes: firstly, fixing to-be-welded metal on a workbench, heating metal without oxidation film and made of the same material with the to-be-welded metal to fuse under the protection of protection gas, ejecting fused metal liquid to welding seams of the to-be-welded metal by a certain speed, welding by a certain welding speed, and completing welding. The method for welding by utilizing fused metal to fill has the advantages that firstly, deposition speed is increased and welding efficiency is improved evidently; secondly, the contradiction that deposition rate is increased while electric arc pressure is increased as well is avoided, the welding defects caused by high temperature of the electric arc are overcome, and joint quality is improved; and thirdly, fusing depth and width, excess deposition metal of welding seams can be accurately controlled, and adaptability is high. In addition, the method is mainly used for metal welding.
Description
technical field [0001] The invention relates to a welding method. Background technique [0002] Welding is one of the main methods of material processing. Welding refers to the material of the workpiece to be welded (same or different), through heating or pressure or both, and with or without filling materials, so that the material of the workpiece can be atomically combined. A processing method to form a permanent connection joint. Fusion welding is a welding method that locally heats the workpiece to be welded and melts it into a liquid to overcome the obstacles that hinder the combination of solids, and then cools and crystallizes into one. The development process of fusion welding can also be said to be the process of welding heat source development. According to welding Different heat sources, fusion welding can be divided into: arc welding (using the heat generated by the discharge process in the gas medium as the welding heat source, which is the most widely used typ...
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