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Low hydrogen type electrode and preparation method thereof

A low-hydrogen type, welding rod technology, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of unsuitability for all-position welding, uneven transition elements, poor arc blowing force, etc., to achieve smooth and dense appearance quality, arc The sound is uniform and stable, and the effect of reducing surface tension

Inactive Publication Date: 2017-05-10
DALIAN ZINTELLIGENCE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This electrode is mainly used to improve the plasticity and ductility of the weld. The coating of the electrode contains a large amount of fluorite (more than 20%), which has poor arc stability, large dust generation and high fluorine content. There is almost no fluorite in the coating. Carbonate, so the blowing force of the arc is poor, it is easy to cause uneven transition elements and slag inclusions, and it is not suitable for all-position welding

Method used

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  • Low hydrogen type electrode and preparation method thereof
  • Low hydrogen type electrode and preparation method thereof
  • Low hydrogen type electrode and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] This embodiment discloses a low-hydrogen electrode, which includes a coating and a welding core, the welding core is low-alloy steel, and the coating is prepared from components with the following weight ratio:

[0027]

[0028] The organic cellulose is carboxymethyl cellulose. The ratio of the coating diameter to the welding core diameter is 1.2. The mass ratio of the coating to the welding core is 1.

[0029] The preparation method of the low-hydrogen type electrode of the present embodiment comprises the following steps:

[0030] 1) Mix the powder materials of the above components evenly to make a basic electrode coating, and pass through a 100-mesh sieve for use;

[0031] 2) In the electrode press coating machine, the alkaline electrode coating is coated on the carbon steel welding core with sodium water glass as a binder;

[0032] 3) Baking at a high temperature of 390-450° C., and keeping it warm for 1-2 hours to prepare a low-hydrogen type electrode.

[00...

Embodiment 2

[0036] This embodiment discloses a low-hydrogen electrode, which includes a coating and a welding core, the welding core is low-alloy steel, and the coating is prepared from components with the following weight ratio:

[0037]

[0038] The organic cellulose is carboxymethyl cellulose. The ratio of the coating diameter to the welding core diameter is 1.4. The mass ratio of the coating to the welding core is 0.6.

[0039] The preparation method of the low-hydrogen type electrode of the present embodiment comprises the following steps:

[0040] 1) Mix the powder materials of the above components evenly to make a basic electrode coating, and pass through a 100-mesh sieve for use;

[0041] 2) In the electrode press coating machine, the alkaline electrode coating is coated on the carbon steel welding core with sodium water glass as a binder;

[0042] 3) Baking at a high temperature of 390-450° C., and keeping it warm for 1-2 hours to prepare a low-hydrogen type electrode.

[...

Embodiment 3

[0045] This embodiment discloses a low-hydrogen electrode, which includes a coating and a welding core, the welding core is low-alloy steel, and the coating is prepared from components with the following weight ratio:

[0046]

[0047]

[0048] The organic cellulose is carboxymethyl cellulose. The ratio of the coating diameter to the welding core diameter is 1.3. The mass ratio of the coating to the welding core is 1:1.

[0049] The preparation method of the low-hydrogen type electrode of the present embodiment comprises the following steps:

[0050] 1) Mix the powder materials of the above components evenly to make a basic electrode coating, and pass through a 100-mesh sieve for use;

[0051] 2) In the electrode press coating machine, the alkaline electrode coating is coated on the carbon steel welding core with sodium water glass as a binder;

[0052] 3) Bake at a high temperature of 390-450° C., and keep it warm for 1-2 hours to prepare a low-hydrogen type electrod...

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Abstract

The invention provides a low hydrogen type electrode and a preparation method thereof. The low hydrogen type electrode comprises a coating and a core wire. The core wire is a low-alloy steel. The coating is prepared from, by weight ratio, 5-15 parts of organic cellulose, 5-20 parts of rare earth fluoride, 10-20 parts of TiO2, 6-15 parts of iron powder, 3-6 parts of Al2O3, 2-4 parts of manganese, 0.5-3 parts of copper powder, 12-20 parts of CaF2, 10-30 parts of fluorite, 2-5 parts of Mo and 0.5-5 parts of graphite. The invention further discloses a preparation method of the low hydrogen type electrode. The low hydrogen type electrode is good in spreadability, small in splashed particles, excellent in fire resistant performance and good in technological operation performance.

Description

technical field [0001] The invention relates to welding technology, in particular to a low-hydrogen welding rod and a preparation method thereof. Background technique [0002] Welding rods are widely used in welding, easy to make, and have good welding process performance and stable quality. The welding of large-diameter, high-strength, and large-wall-thickness pipes or containers also puts forward higher requirements for the low-temperature toughness and crack resistance of the weld metal. Low-hydrogen electrodes are often used for welding under these conditions. However, there is a common problem with the low-hydrogen electrode, which is that the process performance of the electrode is worse than that of the acid electrode. For example, the particles spattered during welding are larger, the stability of the arc, the weld shape after welding, and the all-position weldability are more acidic. Welding rod is poor. [0003] In order to improve the technological performance o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K35/40
CPCB23K35/3601B23K35/404
Inventor 李晓莉翟斌
Owner DALIAN ZINTELLIGENCE TECH
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