Preparation method for magnesium alloy welding wire

A magnesium alloy and welding wire technology, which is applied in the field of short-process preparation of magnesium alloy welding wire, can solve problems such as complex production procedures, high cost, and long process flow, and achieve the effects of reducing processing passes, efficient processing, and simplifying the process flow

Inactive Publication Date: 2016-12-07
GUANGDONG INST OF MATERIALS & PROCESSING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Jin Wenzhong et al disclosed a hot extrusion-drawing process [Hot extrusion-drawing process of magnesium alloy welding wire and its deformation mechanism, "Material Science and Technology", 2005,13(5):466-469] , in this method, the AZ61 magnesium alloy extrusion billet is hot-extruded at a temperature of 440°C, and then drawn into a magnesium alloy welding wire in multiple passes at a temperature of 300°C. The difficulty of production, improving production efficiency and ensuring good straightness of welding wire, etc., but the production process is complex, the process is long, and the cost is high
Therefore, there are still many problems in the production of magnesium alloy welding wire by hot extrusion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Preparation method of AZ31 magnesium alloy welding wire with a diameter of 1.0mm.

[0014] First, the AZ31 magnesium alloy is melted at 700°C, and the molten AZ31 magnesium alloy in the heating mold is prepared at a casting speed of 100mm / min at a cooling water flow rate of 1500L / h, a cooling water temperature of 20°C, and a vacuum degree of 0.1Pa. AZ31 magnesium alloy wire blank with a diameter of 4.0mm; then the AZ31 magnesium alloy wire blank is drawn at room temperature, the drawing pass elongation coefficient is 1.1~1.5, and low-temperature annealing is performed twice during the drawing process, the annealing temperature is 300°C, and the lubrication The agent is vegetable oil; after 15 passes, it is drawn into a magnesium alloy welding wire with a diameter of 1.0mm. The AZ31 magnesium alloy welding wire prepared in this example has a bright outer surface and a fibrous crystal structure inside.

Embodiment 2

[0016] Preparation method of ZK60 magnesium alloy welding wire with a diameter of 3.0 mm.

[0017] First, the ZK60 magnesium alloy is melted at 680°C, and the molten ZK60 magnesium alloy in the heating mold is prepared at a casting speed of 30mm / min at a cooling water flow rate of 1000L / h, a cooling water temperature of 30°C, and a vacuum degree of 0.1Pa. ZK60 magnesium alloy wire billet with a diameter of 5.0mm; then the ZK60 magnesium alloy wire billet is drawn at room temperature, the drawing pass elongation coefficient is 1.1~1.5, and low-temperature annealing is performed twice during the drawing process, the annealing temperature is 250 ° C, lubricated The agent is vegetable oil; after 8 passes, it is drawn into a magnesium alloy welding wire with a diameter of 2.0mm. The ZK60 magnesium alloy welding wire prepared in this example has a bright outer surface and a fibrous crystal structure inside.

Embodiment 3

[0019] Preparation method of AZ61 magnesium alloy welding wire with a diameter of 2.0mm.

[0020] First, the AZ61 magnesium alloy is melted at 650°C, and the molten AZ61 magnesium alloy in the heating mold is prepared at a casting speed of 60mm / min at a cooling water flow rate of 500L / h, a cooling water temperature of 25°C, and a vacuum degree of 1Pa. 6.0mm AZ61 magnesium alloy wire billet; then the AZ61 magnesium alloy wire billet is drawn at room temperature, the drawing pass elongation coefficient is 1.1~1.5, low temperature annealing is carried out three times during the drawing process, the annealing temperature is 250 ℃, lubricant It is vegetable oil; after 10 passes, it is drawn into a magnesium alloy welding wire with a diameter of 2.0mm. The AZ61 magnesium alloy welding wire prepared in this example has a bright outer surface and a fibrous crystal structure inside.

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Abstract

The invention discloses a preparation method for a magnesium alloy welding wire. The preparation method is characterized by comprising the following steps: under the conditions with the cooling water flow rate being 500-1500L/h, the cooling water temperature being 20-30 DEG C and the vacuum degree being 0.1-1Pa, treating fused magnesium alloy in a heated casting mould with the billet drawing speed being 1-100mm/min to prepare a wire billet with the diameter being 4.0-8.0mm; and carrying out 3-15 pass pulling processing on the magnesium alloy wire billet to finally obtain the magnesium alloy welding wire with the diameter being 1.0-3.0mm, wherein the pulling pass elongation coefficient is 1.1-1.5. The preparation method for the magnesium alloy welding wire is simple in process and high in efficiency and is capable of preparing the magnesium alloy welding wire with the diameter size being 2.0mm or below.

Description

technical field [0001] The invention relates to the technical field of metal material preparation, in particular to a short-flow preparation method of magnesium alloy welding wire. Background technique [0002] Magnesium alloy has remarkable characteristics such as high specific strength and specific stiffness, good thermal conductivity, good damping and shock absorption performance, good electromagnetic shielding performance, and excellent machining performance. It has been widely used in aerospace, automobile, electronics and other fields. The lightest new metal structural material in practical application. With the continuous expansion of the field of use and application of magnesium alloys, the application of magnesium alloy welded structural parts has gradually increased, and the market demand for magnesium alloy welding wire has continued to expand. [0003] The main preparation methods of magnesium alloy welding wires currently developed for welding are hot extrusion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/22B23K35/40
CPCB22D11/22B22D11/001B22D11/005B23K35/40
Inventor 黄正华周楠农登宋东福甘春雷王顺成徐静
Owner GUANGDONG INST OF MATERIALS & PROCESSING
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