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Methods for producing magnesium alloy welding wires by adopting magnesium alloy foundry scraps

A casting scrap and magnesium alloy technology, applied in welding media, manufacturing tools, welding equipment, etc., can solve the problems of low safety factor, complex process, adding covering agent, etc., and achieve good joint performance, high safety factor and smooth surface Effect

Active Publication Date: 2011-01-19
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems that the current traditional process of producing magnesium alloy welding wire requires shielding gas and covering agent in the smelting process, the production cost is high, the process is complicated, the safety factor is low, and the environment is polluted to a certain extent, a magnesium alloy welding wire is provided. Method for producing magnesium alloy welding wire from alloy casting scrap

Method used

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  • Methods for producing magnesium alloy welding wires by adopting magnesium alloy foundry scraps
  • Methods for producing magnesium alloy welding wires by adopting magnesium alloy foundry scraps
  • Methods for producing magnesium alloy welding wires by adopting magnesium alloy foundry scraps

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine Figure 1-Figure 5 Describe this embodiment, the method of this embodiment includes the following steps: Step 1, waste material cleaning: immerse the magnesium alloy casting waste and leftover material with oil stains in the mixed solution for degreasing, the mixed solution has a mass concentration of 45% by volume ratio of 6:1 %-55% nitric acid and sulfuric acid solution with a mass concentration of 95%-98% are mixed, the invasion time is 1-2 minutes, then the oil stain is washed with water, and then immersed in nitric acid with a mass concentration of 15%-25% for etching , the invasion time is 2-3 minutes, and finally the residual acid is washed with water, and then air-dried until there is no water on the surface; Step 2: Filling: Put the template 7 that meets the size requirements of the welding wire into the bottom of the extrusion cylinder liner 5, Put the cleaned magnesium alloy casting waste and leftovers into the inner ...

specific Embodiment approach 2

[0011] Embodiment 2: The method of this embodiment also includes step 5. Step 5 is cutting and packaging, cutting the welding wire that meets the size requirements or directly reeling and packaging. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Specific embodiment three: In this embodiment, after step five is completed, the following steps are added: rounding one end of the extruded welding wire; putting the welding wire into a tubular heating furnace and passing the rounded end through the wire drawing die Connect with the fixture of the wire drawing machine; the mold is lubricated with high-temperature grease, the heating temperature is 240°C, and the heating speed is 4m / min for wire drawing; Step 4: Select the mold according to the deformation rate of less than 20%, and repeat Step 1 and Step 2 until it meets The diameter requirement of welding wire, this embodiment is suitable for producing the welding wire whose diameter requirement is 2-0.4mm. Others are the same as in the first embodiment.

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Abstract

The invention discloses methods for producing magnesium alloy welding wires by adopting magnesium alloy foundry scraps, relating to methods for producing the magnesium alloy welding wires and aiming at solving the problems that the traditional process for producing the magnesium alloy welding wires at present has high production cost, complex process, low safety coefficient and certain pollution to the environment in a melting process due to requirement of shielding gas and addition of a covering agent. One method comprises the following steps of: (1) cleaning scraps; (2) packing; (3) heating and preserving the heat; (4) extruding to form wires, and (5) shearing; and compared with the first method, the difference in the second method is that in the step 3, the cleaned scraps are placed into an iron barrel which is placed into a heating furnace for heating, one end of the iron barrel is rapidly placed into a liner of an extrusion barrel, and the scraps are pushed to the bottom of the liner of the extrusion barrel, and in the step 4, an extruder is started so that an extrusion shaft enters the liner of the extrusion barrel to extrude a heated pressing disk and the scraps. The invention is used for producing the magnesium alloy welding wires.

Description

technical field [0001] The invention relates to a method for producing magnesium alloy welding wire. Background technique [0002] At present, the types of magnesium alloy welding wire are mainly aimed at deformed magnesium alloys, which are suitable for welding magnesium alloy profiles. There is no welding wire with the same composition as castings on the market, which is suitable for repair welding of magnesium alloy castings, and the traditional process is produced by casting or extrusion after casting, drawing, and shielding gas and covering agent are required in the process of melting. The cost is high, the process is complicated, the safety factor is low, and it causes certain pollution to the environment. Contents of the invention [0003] In order to solve the problems that the current traditional process of producing magnesium alloy welding wire requires shielding gas and covering agent in the process of smelting, high production cost, complex process, low safety...

Claims

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Application Information

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IPC IPC(8): B23K35/40
Inventor 吉泽升张铁磊胡茂良
Owner HARBIN UNIV OF SCI & TECH
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