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Metal fusion welding method

A welding method and fusion welding technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of reducing the stability and electrical conductivity of joints, as well as mechanical strength, thermal cracks and pores, etc., so as to achieve stable and firm welding joints, reduce Sensitive, easy-to-operate effects

Active Publication Date: 2013-05-01
XINCHANG COUNTY RENTONG ELECTRIC POWER TECHLIMITED
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  • Application Information

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Problems solved by technology

The Chinese patent with publication number CN1559745A has improved on the basis of the above scheme, adding a certain amount of zinc and tin to alloy the welded joints to improve the corrosion resistance of the joints, but the welded joints still contain impurity elements hydrogen, oxygen, Sulfur and phosphorus are prone to thermal cracks and pores, reducing the stability, electrical conductivity and mechanical strength of joints

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  • Metal fusion welding method

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Embodiment 1

[0026] The metal fusion welding method comprises the following steps:

[0027] To prepare lead-free exothermic solder:

[0028] Take the following raw materials by weight:

[0029] A) oxidation rate 20%-80%, 100 parts of copper oxide of 40 mesh-100 mesh,

[0030] B) 35 parts of 100-200 mesh aluminum powder,

[0031] C) 5 parts of magnesium powder,

[0032] D) Toner 5 copies

[0033] E) 4 parts of metal indium.

[0034] Add all raw materials into WH-500 double cone high-efficiency mixer (Wuxi Haohao Powder Equipment Factory), and mix for 10 minutes to obtain exothermic flux.

[0035] To prepare lead-free exothermic solder igniter:

[0036] Take the following raw materials by weight:

[0037] Magnesium powder 40 mesh-200 mesh 100 parts;

[0038] Copper oxide 100 mesh - 200 mesh 50 parts;

[0039] 15 parts of nano silver powder;

[0040] 12 parts of potassium permanganate;

[0041] 4 parts of nickel powder.

[0042] Add all the raw materials into the WH-500 double con...

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Abstract

The invention discloses a metal fusion welding method, which comprises the following steps that a fire striking gun is used for igniting ignition agents, the ignition agents ignite heat release welding fluxes, a graphite mold is applied, a welding form is formed in a mold cavity, and a workpiece is melt for welding. The metal fusion welding method has the advantages that the operation is simple, and the metal fusion welding method can be widely applied to the welding in various aspects including railway rail guide, electric equipment grounding engineering processing, lightning protection grounding, surge protection, intelligent mansion building, petrochemical industry engineering building, cathode anticorrosion protection and the like. When the welding method is used, the occurrence of hydrogen-induced pinholes and air holes in workpiece joints can be inhabited, the sensitivity to the humid environment in the welding process is lowered, the workpiece joint completed through welding is stable and firm, the electric performance is excellent, and the high-current surge impact resistance capability is higher than that of the workpiece (conductor) per se.

Description

technical field [0001] The invention belongs to the field of welding, and in particular relates to a metal fusion welding method. Background technique [0002] Rails are the most important components of track structures. With the rapid development of high-speed railways, seamless lines have been widely used. Since seamless lines eliminate the weak link of rail joints, the track structure maintains continuity along the extension direction, greatly reducing the wheel-rail The dynamic effect improves the load status of the track structure and rolling stock, and prolongs the service life of the equipment. And the practice shows that the welding quality of the rail determines whether the seamless line can play its due effect. In the field welding of seamless lines, exothermic welding has the advantages of simple equipment, fast and convenient and low cost, no shortening of the rail during the welding process, high joint straightness, convenient construction, and easy mastery by...

Claims

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Application Information

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IPC IPC(8): B23K23/00B23K35/34B23K35/36
Inventor 石佐石含华石柱
Owner XINCHANG COUNTY RENTONG ELECTRIC POWER TECHLIMITED
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