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Preparation method of zinc-aluminium seamless flux-cored wire

A seamless flux-cored welding wire, zinc-aluminum technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of uneven flux filling, high cost, complicated processing procedures, etc., and achieve continuous and uniform flux filling and high production efficiency High, solve the effect of complex processing procedures

Inactive Publication Date: 2011-10-26
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a zinc-aluminum seamless flux-cored welding wire preparation method aimed at the deficiencies in the above-mentioned technologies. Complex processing procedures and high costs

Method used

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  • Preparation method of zinc-aluminium seamless flux-cored wire
  • Preparation method of zinc-aluminium seamless flux-cored wire
  • Preparation method of zinc-aluminium seamless flux-cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The raw materials Zn80%, Al19.5%, Ag0.5% are smelted into ingots by conventional technology, the riser is removed, the skin is peeled off, and the spheroidizing annealing is carried out in a nitrogen protection furnace at 220 °C for 1.5 hours. The flux-cored flux cesium fluoroaluminate is prepared into a paste with vaseline and loaded into a pressure injector, then the alloy ingot is put into a special extrusion mold, and the pressure injector is connected to the special extrusion mold. The extrusion temperature is 200 °C, The pressing speed is 0.3m / s, and the Φ10mm welding wire whose core is flux and zinc-aluminum alloy is extruded, and then drawn in a wire drawing machine for many times, the processing rate of the first pass is 18%, and put into a nitrogen protection furnace for 180 ℃ annealing; the processing rate of the second pass is 12%, and it is placed in a nitrogen protection furnace for annealing at 180°C; the processing rate of other passes is 6% un...

Embodiment 2

[0019] Example 2: The raw materials Zn95%, Al3.7%, Ag1%, Mn0.3% were smelted into ingots, the riser was removed, the skin was peeled off, and spheroidizing annealing was carried out at 220°C in a nitrogen protection furnace for 1.5 hours. The flux-cored flux, cesium fluoroaluminate, is made into a paste with vaseline and loaded into a pressure syringe, then the zinc-aluminum alloy ingot is put into a special extrusion mold, and the pressure syringe is connected to the special extrusion mold, and the extrusion temperature is 200°C , the extrusion speed is 0.3m / s, and the Φ10mm welding wire whose core is flux and zinc-aluminum alloy is extruded, and then drawn on the wire drawing machine for many times, the processing rate of the first pass is 18%, and then put into nitrogen protection Annealing at 180°C in the furnace; the processing rate of the second pass is 12%, and then placed in a nitrogen protection furnace for annealing at 180°C; the processing rate of the other passes is...

Embodiment 3

[0020] Example 3: The raw materials Zn80%, Al18%, Ag1.7%, and rare earth 0.3% were smelted into an ingot, the riser was removed, the skin was removed, and the spheroidizing annealing was performed at 260 ° C for 2 hours, and the flux cored flux cesium fluoroaluminate 95%, Potassium Fluoroaluminate 5% is made into a paste with polyethylene glycol and put into a pressure syringe, then the zinc-aluminum-silver alloy ingot is put into a special extrusion mold, and the pressure syringe is connected to the special extrusion mold , the extrusion temperature is 180°C, the extrusion speed is 0.5m / s, and the Φ12mm welding wire whose core is flux and zinc-aluminum alloy is extruded, and then drawn on the wire drawing machine for many times, the processing rate of the first pass is 15 %, and then placed in a nitrogen protection furnace for annealing at 200°C; the processing rate of the second pass is 10%, and then placed in a nitrogen protection furnace for annealing at 200°C; the processi...

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Abstract

The invention provides a preparation method of a zinc-aluminium seamless flux-cored wire. The method provided by the invention is characterized by comprising the following steps: smelting raw materials such as zinc, aluminium and the like, and casting the melt into an ingot; after riser removal and scalping, putting the ingot into a nitrogen protection furnace and carrying out shpheroidizing annealing in the nitrogen protection furnace at 180-230 DEG C for 1-2 hours; blending a core flux into paste by virtue of an organic solvent and filling the paste in a pressure injector; then putting the zinc-aluminium alloy ingot into a dedicated extrusion die, connecting the die to the pressure injector, and starting the extrusion die to directly extrude welding wire which has the diameter phi of 5.0-12.0mm and has a core of the flux and a sheath of the zinc-aluminium alloy; and then performing drawings many times to obtain the finished product. The flux-cored wire manufactured by the method is characterized in that the flux is filled continuously and evenly; during the use process of the flux for welding, no welding slag is left, no carbon is deposited, the operation is convenient, and the production efficiency is high, therefore, the problems such as complex processing steps, high cost and the like in the prior art are solved.

Description

technical field [0001] The invention relates to a method for preparing a zinc-aluminum seamless flux-cored welding wire. The seamless flux-cored welding wire is mainly used for welding between aluminum and aluminum and between aluminum and copper. Background technique [0002] Aluminum is widely used in industrial production and social life due to its small specific gravity, good electrical and thermal conductivity, excellent castability and machinability. In order to reduce weight, save cost, improve efficacy, and enhance aesthetics, gratifying results have been achieved by substituting aluminum for copper. However, the welding of aluminum is relatively difficult. At present, the oxide film on the surface of aluminum and aluminum alloy is mainly removed by brazing flux. Zinc-aluminum seamless flux-cored wire can achieve long-term preservation of flux without deterioration, and can make rings without powder leakage, which represents the development direction of zinc-aluminu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/40
Inventor 潘建军龙伟民乔培新黄俊兰于新泉钟素娟裴夤崟邹伟潘世师
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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