A kind of preparation method of magnesium alloy welding wire

A magnesium alloy and welding wire technology, which is applied in the field of magnesium alloy welding wire preparation, can solve the problems of low drawing efficiency, inability to industrialize magnesium alloy welding wire, and inability to solve extruded wire joint connections, etc., to save energy, reduce time and save money. Cost, the effect of reducing the number of drawing passes

Active Publication Date: 2021-04-16
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method requires 3 to 15 drawing passes to finally obtain magnesium alloy welding wire with a diameter of 1.0 to 3.0 mm. Although the welding wire with a diameter of less than 2.0 mm can be processed by multi-pass drawing, as the diameter gradually decreases, a single The drawing deformation is less than 10%. Even after intermediate annealing, the drawing efficiency is still extremely low. More importantly, the problem of extruded wire joint connection cannot be solved, and the industrial production of magnesium alloy welding wire cannot be carried out.

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  • A kind of preparation method of magnesium alloy welding wire
  • A kind of preparation method of magnesium alloy welding wire
  • A kind of preparation method of magnesium alloy welding wire

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Effect test

Embodiment 1

[0024] Prepare Ф1.2mm diameter specification AZ31 magnesium alloy welding wire, the specific preparation is as follows:

[0025] 1. Ingot extrusion: The Ф110mm ingot blank is homogenized and annealed at 450°C / 24h and sawed, the wagon grows 450mm, and the Ф100mm ingot is prepared for extrusion. The extrusion die, the sliding die and the extrusion barrel are heated to 380° C. respectively, and the magnesium alloy bar is heated to 400° C. in advance. The extrusion speed of the first material is 1m / min, the normal extrusion speed is 1.5m / min, and the extrusion ratio is 15. The ingot is extruded into a Ф9.5mm straight rod and wound into a roll.

[0026] 2. Wire billet cleaning: use the wire brush automatic cleaning device to remove the oxide skin on the surface of the Ф9.5mm wire billet, and use acetone to clean the surface oil and dust to ensure that there are no oxides, oil stains and burrs on the surface of the extruded wire billet.

[0027] 3. Preheating: Preheat the pre-extru...

Embodiment 2

[0038] To prepare Mg-Zn-Y-Zr rare earth magnesium alloy welding wire with a diameter of Ф1.6mm, the specific steps are as follows:

[0039]1. Ingot extrusion: The ingot Ф110mm ingot blank is homogenized and annealed at 480°C / 24h and then sawed and turned into 450mm and Ф100mm ingot blanks to prepare for extrusion. The extrusion die, the sliding die and the extrusion barrel are heated to 430° C. respectively in advance, and the magnesium alloy bar is heated to 450° C. at the same time. Extrude the ingot into a Ф9.5mm straight rod with the extrusion speed of the first material 1m / min, the normal extrusion speed 1m / min, and the extrusion ratio of 10, and wind it into a coil.

[0040] 2. Wire billet cleaning: use the wire brush automatic cleaning device to remove the oxide skin on the surface of the Ф9.5mm wire billet, and use acetone to clean the surface oil and dust to ensure that there are no oxides, oil stains and burrs on the surface of the extruded wire billet.

[0041] 3. ...

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Abstract

A preparation method of magnesium alloy welding wire, the steps are: ingot extrusion; wire billet cleaning; preheating; continuous extrusion: continuous feeding into the extruder, through the control of the extrusion speed and the adjustment of the temperature control system, to maintain The continuous extrusion temperature is between 380°C and 450°C; drawing; scraping; surface treatment. The preparation method of the present invention is not only simple in process and easy to operate, but also efficient in processing and low in economic cost, adopts continuous extrusion, greatly improves the processing performance of magnesium alloys, effectively solves the problem of joint connection of magnesium alloy welding wires, and can produce high-quality magnesium Alloy jointless welding wire can meet the quality requirements of fusion welding such as automatic MIG welding, TIG welding and laser hybrid welding, and is suitable for industrial production of high-quality magnesium alloy welding wire.

Description

technical field [0001] The invention relates to a processing technology of welding wire, in particular to a preparation method of magnesium alloy welding wire. Background technique [0002] Magnesium alloys have high specific strength and high specific stiffness. Under the same strength and stiffness conditions, magnesium alloys can be used to make parts and load-bearing structural parts to achieve greater weight reduction effects. In addition, magnesium alloys also have shock absorption properties. Good casting performance, excellent cutting performance and so on. Therefore, magnesium alloys have good application and development prospects. At present, the welding method is mainly used for the forming of large-sized and complex structure magnesium alloys, and the processing of domestic magnesium alloy welding industrial and semi-industrial magnesium alloy welding wires is mainly through hot extrusion. Due to its close-packed hexagonal lattice structure, magnesium alloy has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40
CPCB23K35/40
Inventor 郎玉婧周古昕杜秀征王生毛华乔立李金宝吕建国黄文涛
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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