Anti-redness stainless steel electrode coating and electrode containing the coating

A technology of electrode coating and stainless steel, which is applied in the direction of welding/welding/cutting articles, welding media, welding equipment, etc., can solve the problem that the coating of stainless steel electrodes is prone to redness, etc., so as to improve the anti-redness performance, reduce the waste of electrodes, The effect of increased melting speed

Inactive Publication Date: 2019-03-19
湖南湘工环保科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the above prior art, the present invention provides an anti-redness stainless steel electrode coating and an electrode containing the coating, the purpose of which is to reduce the calorific value of the welding core during welding, enhance the gas permeability of the coating and increase the Strength, solve the problem that the coating of stainless steel electrode is easy to be red

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An embodiment of the electrode of the present invention, the anti-redness stainless steel electrode of this embodiment includes a welding core and a coating, the welding core is made of 308 stainless steel, and the coating contains the following components in mass percentage: rutile: 38%, marble : 16%, fluorite: 6%, cryolite: 3%, feldspar: 12%, metal manganese: 5%, micro-carbon ferrochrome: 10%, mica: 7%, titanium dioxide: 3%. The drug skin is also added with a modulus of 2.5 potassium sodium water glass accounting for 18% of the total mass of the drug skin and caustic soda accounting for 0.2% of the mass of the potassium sodium water glass.

[0022] When the stainless steel electrode of this embodiment is welded, the droplet transfer form is short circuit and slag wall combination, the arc voltage is 29V, the welding current is 117A, and the welding time is 42 seconds. There is no redness of the coating until the end of welding.

Embodiment 2

[0024] An embodiment of the electrode of the present invention, the anti-redness stainless steel electrode of this embodiment includes a welding core and a coating, the welding core is made of 308 stainless steel, and the coating contains the following components in mass percentages: rutile: 40%, marble : 8%, fluorite: 5%, cryolite: 2%, feldspar: 17%, metal manganese: 4%, micro-carbon ferrochrome: 16%, mica: 6%, titanium dioxide: 2%. Potassium sodium water glass with a modulus of 2.65 and 0.15% of the mass of potassium sodium water glass are also added in the drug skin.

[0025] When the stainless steel electrode of this embodiment is welded, the droplet transfer form is dominated by slag wall transfer, the arc voltage is 35V, the welding current is 113A, and the welding time is 38 seconds. There is no redness of the coating until the end of welding.

Embodiment 3

[0027] An embodiment of the electrode of the present invention, the anti-redness stainless steel electrode of this embodiment includes a welding core and a coating, the welding core is made of 308 stainless steel, and the coating contains the following components in mass percentage: rutile: 35%, marble : 8%, fluorite: 4%, cryolite: 1%, feldspar: 23%, metal manganese: 3%, micro-carbon ferrochrome: 20%, mica: 5%, titanium dioxide: 1%. The drug skin is also added with a modulus of 2.8 potassium sodium water glass accounting for 22% of the total mass of the drug skin, and caustic soda accounting for 0.25% of the mass of the potassium sodium water glass.

[0028] When the stainless steel electrode of this embodiment is welded, the droplet transfer form is the combination of spray and slag wall, the arc voltage is 38V, the welding current is 110A, and the welding time is 35 seconds. There is no redness of the coating until the end of welding.

[0029] The coating of table 1 embodime...

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Abstract

The invention provides an anti-redness stainless steel electrode coating and an electrode containing the coating, wherein the coating comprises dry powder and an adhesive; the dry powder comprises thefollowing components in percentage by mass: 35-40% of rutile, 8-16% of marble, 4-6% of fluorite, 1-3% of cryolite, 12-23% of feldspar, 3-5% of manganese metal, 10-20% of micro-carbon ferro chrome, 5-7% of mica and 1-3% of titanium dioxide. The adhesive is potassium sodium water glass, the modulus is 2.5-2.8, the addition amount is 18-22% of the total mass of the dry powder; the adhesive can increase the air permeability of the coating; caustic soda flakes with 0.15-0.25% mass of the potassium sodium water glass is added in the adhesive so as to increase the strength of the coating. The anti-redness stainless steel electrode comprises the coating and a stainless steel welding core, the heating value of the stainless steel electrode is reduced during welding, and the coating redness phenomenon is not generated at the end of welding of the electrode.

Description

technical field [0001] The invention relates to the technical field of electrode production, in particular to an anti-redness stainless steel electrode coating and an electrode containing the coating. Background technique [0002] At present, most of the stainless steel electrodes use titanium-calcium type coating, which generally has the disadvantage of poor manufacturability. The key problem is that the coating tends to turn red when the electrode is welded to the second half. The redness will cause the gas-generating agent in the coating to decompose in advance, so that the molten pool will lose the protection of the gas curtain, thereby easily generating pores. At the same time, the beneficial elements transitioning through the coating will also burn out in advance, which will have an adverse effect on the properties of the weld metal. In more severe cases, the coating will crack or fall off and the welding will have to be terminated, resulting in a huge waste of electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/365B23K35/30B23K103/04
CPCB23K35/0261B23K35/3086B23K35/365
Inventor 贺惠民朱遂跃
Owner 湖南湘工环保科技开发有限公司
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