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A high-efficiency and energy-saving welding rod

A high-efficiency, energy-saving, electrode technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of unfavorable welding of coating, burning of alloy elements, and small melting coefficient, and achieve high-efficiency, energy-saving melting Coefficient, increase in melting amount, effect of high current density

Inactive Publication Date: 2015-11-25
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the defects and deficiencies of existing welding rods have seriously affected the application of welding rods.
[0003] At present, the metal cross-sections of all electrodes are conductive, and the arc heat and resistance heat generated during welding are all used to melt the electrode, coating and base material except for loss to the environment, which leads to excessive heat input during welding and damages the weld seam. The residence time of the heat-affected zone and the heat-affected zone at high temperature is long and the cooling rate is slow, which will cause the structure of the weld zone and the heat-affected zone to be coarse, and the thermal crack tendency of the weld will increase; especially when welding stainless steel and alloy steel, too large The amount of heat input causes severe burning of alloying elements and reduces the corrosion resistance of the weld
Most of the alloying elements in the existing electrode are added to the coating of the electrode. During welding, the alloying elements are not only difficult to melt in the weld but also burnt. Too little alloying elements in the coating will affect the performance of the weld; There are too many alloy elements in the medium, which will easily make the coating conductive and unfavorable for welding, and the deposition speed of the existing electrode is low, the power consumption is large, and the melting coefficient is small. High-efficiency and energy-saving electrodes with high deposition speed, low power consumption and large melting coefficient are of great significance

Method used

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  • A high-efficiency and energy-saving welding rod
  • A high-efficiency and energy-saving welding rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The ratio n of the cross-sectional area of ​​the conductive metal tube, filler wire, insulating layer and coating is the conductive metal tube:filling wire:insulating layer:coating=4.5:1.5:1:1.

[0022] The main composition of the insulating layer (by weight): 30% alcohol-soluble acrylic resin, 12% ethylene glycol butyl ether acetate, 20% cyclohexanone, 8% octanol, KH5701%, 1% nonylphenol polyoxyethylene ether , Silicon dioxide 6%, water glass 2%, phosphoric acid 1%, aluminum powder 4%, talcum powder 2%, calcium fluoride 3%, titanium dioxide 5%, calcium carbonate 4%, cerium fluoride 1%. According to the above ratio, mix the insulating layer medicine, add glass fiber and other adhesives, and apply it on the filler electrode through the electrode pressure coating machine.

[0023] The coating is acidic, and the welding rod coating formula (by weight ratio) is: 41% rutile, 4% titanium dioxide, 10% medium carbon ferromanganese, 12% silica mud, 7% white mud, and 7% marble ,...

Embodiment 2

[0025] The ratio n of the cross-sectional area of ​​the conductive metal tube, filler wire, insulating layer and coating is the conductive metal tube:filling wire:insulating layer:coating=4.5:1.5:1:1.

[0026] Main components of insulating layer: alcohol-soluble acrylic resin 30%, ethylene glycol butyl ether acetate 12%, cyclohexanone 20%, octanol 8%, KH5701%, nonylphenol polyoxyethylene ether 1%, silicon dioxide 6 %, water glass 2%, phosphoric acid 1%, aluminum powder 4%, talcum powder 2%, calcium fluoride 3%, titanium dioxide 5%, calcium carbonate 4%, cerium fluoride 1%. According to the above ratio, mix the insulating layer medicine, add glass fiber and other adhesives, and apply it on the filler electrode through the electrode pressure coating machine.

[0027] The coating is alkaline, and the welding electrode coating formula (by weight ratio) is: 42% marble, 20% fluorite, 3% rutile, 6% silicon powder, 2% zircon sand, low-carbon ferromanganese 5.8%, sprayed ferrosilicon ...

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Abstract

The invention discloses an efficient and energy-saving welding electrode which comprises a clamping end and an arc end and is characterized in that filler wires, an insulating layer, a conductive metal tube and a coating are mutually wrapped from inside to outside to form a cylinder with small ends and a big middle part. According to the invention, only the conductive metal tube of the efficient and energy-saving welding electrode generates electric arcs, and part of electric arc heat is used for melting the filler wires, the insulating layer and the coating. Therefore, the amount of deposited metal in unit electricity and unit time is remarkably increased, and the purposes of increasing the welding fusion coefficient, saving electric energy, reducing welding heat input and improving performance of welded splices are achieved.

Description

technical field [0001] The invention belongs to the technical field of metal welding materials, relates to an electric welding rod, and more particularly relates to a high-efficiency and energy-saving electric welding rod. technical background [0002] The development of the welding industry advances with the development of industries in various countries. It represents the industrial level and can reflect the efficiency and quality of industrial development in various countries. Welding has developed from a traditional thermal processing technology to an engineering technology discipline integrating materials, metallurgy, structure, mechanics, electronics and other disciplines. As an important material processing technology, welding technology is widely used in machinery manufacturing, petrochemical, shipbuilding, bridge, aerospace and other industries. With the rapid development of these industries, the technical requirements and welding performance of the electrodes used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/18B23K35/362
Inventor 方臣富宋金英方芳李晓泉高延敏
Owner JIANGSU UNIV OF SCI & TECH