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Electrode suitable for welding natural gas storage tanks with AC power and preparation method thereof

A technology of AC power supply and natural gas, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems of high price, can only use AC power supply for welding, and cannot use DC power supply for welding, etc., and achieve good welding performance. , Eliminate arc break and arc break phenomenon, avoid the effect of undercut

Active Publication Date: 2021-06-25
株洲湘江电焊条有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, this kind of welding rod suitable for AC power welding of natural gas storage tanks was imported from Japan in the past, and the price is expensive. A large domestic welding consumables company launched a welding rod using DC power welding in 2002 until 2018. It is still a DC power welding electrode. There is no progress, but as a 9% nickel steel itself, there is a phenomenon of magnetic blowing, so DC power can not be used for welding, but AC power can only be used for welding, and in order to prevent cracks in the weld, it needs to be welded at a lower current than ordinary electrodes

Method used

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Effect test

preparation example Construction

[0109] With the respective components and reasonable mass percentages of the electrical welding strip of the present invention, the arc can be controlled well, which can be applied to the welding of the AC power supply, thereby avoiding the magnetic polarity of the DC power supply welding, yet another In terms of this, it is also provided that a method for preparing a welding strip suitable for an AC power supply welding natural gas storage tank is provided, including: preparing or obtaining chemical products, aluminosilicate, cellulose mixed powder;

[0110] The components of the welding strip were poured into the vertical mixer for 6 to 10 minutes by mixing the vertical mixer for 6 to 10 minutes, and then the mixture was stirred at a suitable viscosity to obtain a weld powder.

[0111] The welding strip powder is applied to the welding rod on the hydraulic press and then dried to obtain a finished product.

[0112] Specifically, potassium in a mixed water of potassium: sodium is...

Embodiment 1

[0121] The components and components of the electric welding strip suitable for use in AC power supply welding natural gas storage tanks are as follows:

[0122] Marble 55%;

[0123] 26.8% in Yingshi;

[0124] Iron powder 2%;

[0125] Atomized silicon 4.2%;

[0126] Electrolytic manganese 3%;

[0127] Micro-carbon chrome iron 2%;

[0128] 1% of aluminum magnesium alloy;

[0129] 0.5% of chemical products;

[0130] 5% of silicate salts;

[0131] Cellulose mixed powder 0.5%;

[0132] The above components totaled 100%;

[0133] The components contained in the chemical products and each component are as follows:

[0134] 25% of potassium carbonate;

[0135] Potassium titanate is 70%;

[0136] 5% pure base, total 100%.

[0137] The composition of the silicate contains and the mass of each component is as follows:

[0138] Dehydrated white flour 25%;

[0139] 52% of the silica bittest;

[0140] Quartz sand 12%.

[0141] The components containing cellulose mixed powder and the mass perce...

Embodiment 2

[0154] An electrical bar for the AC power supply welding natural gas storage tank, which contains the components and components of components, such as:

[0155] Marble 20%;

[0156] 37% of Yingshi;

[0157] Iron powder 6%;

[0158] Atomized silicon 7%;

[0159] Electrolytic manganese 5%;

[0160] Micro-carbon chrome iron 4%;

[0161] 3% of aluminum magnesium alloy;

[0162] 5% of chemical products;

[0163] 9% of silicate salts;

[0164] Cellulose mixed powder 4%.

[0165] among them,

[0166] The components contained in the chemical products and each component are as follows:

[0167] 60% of potassium carbonate;

[0168] 28% potassium titanate;

[0169] Pure base 12%, totaled 100%.

[0170] The composition of the silicate contains and the mass of each component is as follows:

[0171] Dehydrated white pots 10%;

[0172] 52% of the silica bittest;

[0173] Shi-Yishi sand 23%, totaled 100%.

[0174] The components containing cellulose mixed powder and the mass percent of each compo...

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Abstract

The invention discloses an electric welding rod suitable for welding a natural gas storage tank with an alternating current power supply and a preparation method thereof. The components contained in the electric welding rod and their mass percentages are as follows: 20-55% of marble; 26.8-37% of fluorite; iron powder 2‑6%; atomized ferrosilicon 4.2‑7%; electrolytic manganese 3‑5%; microcarbon ferrochrome 2‑4%; aluminum magnesium alloy 1‑3%; chemical products 0.5‑5%; ‑9%; cellulose mixed powder 0.5‑4%; the total of the above components is 100%; among them, the components contained in chemical products and the percentages of each component are as follows: potassium carbonate 25‑60%; complex potassium titanate 28‑70% ; Soda Ash 5‑12%, 100% total. The welding electrode of the present invention can weld stably under the AC power supply, eliminates the phenomenon of arc breaking and arc cessation, and can still weld smoothly when the welding current is 40-50% of the current of ordinary welding electrodes, thereby preventing weld seam cracks from occurring, and can be used in all positions Good welding performance also avoids undercutting.

Description

Technical field [0001] The present invention relates to a welding strip suitable for use in an AC power source welding natural gas storage tank. Background technique [0002] At present, the electric welding strip for natural gas storage tanks suitable for the AC power welding have been imported from Japan. It is expensive, and a large-scale welding material company in China has introduced a DC power welding electrode until 2018 remains DC power supply. There is no progress, but as a 9% nickel steel itself exists, there is a magnetic polarization phenomenon, so it is not possible to use a DC power supply welding, but only the AC power supply is welded, and it is necessary to prevent the weld to produce cracks, it is also required to be solder at a current smaller electrode. Inventive content [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, providing a welding strip suitable for use in AC power supply welding n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/365B23K35/40
CPCB23K35/3602B23K35/3605B23K35/365B23K35/404
Inventor 吴郁均
Owner 株洲湘江电焊条有限公司
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