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Alkaline welding rod coating capable of improving welding process property

A basic electrode and welding process technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of increasing the diffusible hydrogen content of the electrode, affecting the low temperature toughness of the electrode, and the effect is not obvious. The effect of the seam forming is smooth and beautiful, the welding process is improved, and the production cost is reduced

Inactive Publication Date: 2005-03-02
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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AI Technical Summary

Problems solved by technology

In order to improve the technological performance of the basic electrode, it is generally used to improve the technological performance of the basic electrode by adding soda ash, mica, water glass powder to the coating or using a binder with lithium water glass, etc., but these methods Effect is not only not too obvious, but also can increase the production cost of welding rod (as lithium water glass is very expensive, its price is 8-10 times of common water glass) and affect the service performance of welding rod (as soda ash, water glass powder can increase welding rod Moisture absorption performance, mica will increase the diffusible hydrogen content of the electrode, water glass powder will affect the low temperature toughness of the electrode, etc.)
At present, the electrode made by combining the ordinary basic electrode coating and the low-alloy steel welding core has noisy arc sound, large spatter and large particles during welding, rough weld shape, and poor operability during vertical welding.

Method used

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Experimental program
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Effect test

Embodiment Construction

[0014] When the present invention adopts low-alloy steel welding core to prepare a kind of basic low-alloy steel welding rod, its coating composition is (weight ratio): marble 42%, silica mud 7%, fluorite 21%, metal manganese 3%, ferrosilicon 1%, titanium iron 10%, cellulose 0.5%, TiO 2 4%, atomized iron powder 10%, graphite + Na 2 CO 3 1.5%. The basic low-alloy steel welding rod can be produced by mixing the powder materials of the above-mentioned components evenly and then using sodium water glass as a binder to press-coat on the low-alloy steel welding core.

[0015] The invention adopts a basic low-alloy steel welding rod produced by a low-alloy steel welding core, and the welding process test is carried out. The test results show that the arc sound is uniform and stable, the molten pool is clear and spreadable, and the spatter particles are fine when the welding rod is welded. , It is easy to remove slag after welding, the weld shape is smooth and beautiful, and it i...

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Abstract

The alkaline welding rod coating with raised welding performance consists of: marble 39-45 wt%, silica mud 3-10 wt%, fluorite 16-25 wt%, metal Mn 2-4 wt%, Si-Fe alloy 0.5-3 wt%, Ti-Fe alloy 8-12 wt%, cellulose 0.5-1.0 wt%, titania 3-9 wt%, atomized iron powder 6-15 wt% and graphite+Na2CO3 1-2.5 wt%. The said components are mixed, and the mixture is then coated with sodium water glass as adhesive onto low alloy steel welding core to produce alkaline low alloy steel welding rod or onto carbon steel welding core to produce alkaline carbon steel welding rod. The alkaline welding rod with the welding rod coating has excellent welding performance.

Description

Technical field: [0001] The invention relates to the technical field of welding materials, and relates to a basic electrode coating that can improve the performance of the welding process. Background technique: [0002] A more common problem with basic electrodes is that the process performance of the electrodes is worse than that of acid electrodes, such as larger spatter particles during welding, arc stability, weld shape after welding, and all-position weldability, etc. than acid electrodes. . In order to improve the technological performance of the basic electrode, it is generally used to improve the technological performance of the basic electrode by adding soda ash, mica, water glass powder to the coating or using a binder with lithium water glass, etc., but these methods Effect is not only not too obvious, but also can increase the production cost of welding rod (as lithium water glass is very expensive, its price is 8-10 times of common water glass) and affect the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/365B23K35/40
Inventor 朱丙坤李少兵张俊旭姚润钢蒋颖
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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