Chemical core cutting wire for underwater wet method electric arc cutting

A technology of arc cutting and wet method, which is applied in the direction of welding/cutting medium/material, welding medium, metal processing equipment, etc. It can solve the problems of limiting the practical application of cutting wire, stainless steel does not work, and difficult to remove slag from the cutting edge, etc., to achieve Light weight, simple production, easy to remove slag effect

Active Publication Date: 2015-08-26
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cutting edge of this kind of cutting wire is difficult to remove slag, and the oxidation effect does not work on stainless steel, so it can only cut carbon steel and low alloy steel, which limits

Method used

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  • Chemical core cutting wire for underwater wet method electric arc cutting

Examples

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Effect test

preparation example Construction

[0013] The preparation method of the drug core cut wire of the present invention is to select an O-state 1060 pure aluminum strip with a width of 8mm and a thickness of 0.3mm. Made by a wire drawing machine, the cross-section of the drug core cut wire is 'O' shape, and the cut wire diameter is 2.0mm.

[0014] Among the chemical components of the above-mentioned internal drug core, the content and mechanism of action of each component are as follows:

[0015] In the present invention, the thermite and magnesium thermite are the components with more content, they react under the high temperature of the arc heat, and release more heat, and the auxiliary arc melts the metal to be cut. In the present invention, the thermite and magnesium The adding amount of heating agent is 40-60%.

[0016] In the present invention, the added marble mainly plays the role of gas generation. When cutting underwater, the gas released by the marble plays the role of protecting the cutting edge. The a...

Embodiment 1

[0023] The drug core component of Example 1 is used to prepare the drug core cutting wire. Under the conditions of cutting current 250-290A and voltage about 40V, the 8mm thick Q235 steel plate is cut underwater, and a cut with good quality can be obtained, and the cut is easy to clean. scum.

Embodiment 2

[0024] The drug core component of Example 2 was used to prepare drug core cutting wire. Under the conditions of cutting current 180-210A and voltage about 40, the 5mm thick 304 stainless steel was cut underwater to obtain a cut with good quality.

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Abstract

The invention discloses a chemical core cutting wire for underwater wet method electric arc cutting. The chemical core cutting wire is composed of external metal skin and a powdery chemical core. The external metal skin is a pure aluminum belt. The inner chemical core comprises, by mass, 40%-60% of aluminum thermit and magnesium thermit, 10%-35% of marble,5%-10% of potassium carbonate, 1%-2% of a rare earth element, 0-20% of iron powder, 0-10% of nickel powder, 0-15% of potassium chlorate and 5%-10% of hydroxymethyl cellulose. According to the chemical core cutting wire, under the action of electric arc heat and the heating function of exothermic components added to the chemical core, extra oxygen supply and gas protection are not needed, an underwater metal structure can be cut, and the chemical core cutting wire has the advantages of being easy to manufacture, low in cost and high in cutting speed.

Description

technical field [0001] The invention belongs to the technical field of welding and cutting materials for metal materials, and relates to a drug-cored wire for underwater wet arc cutting, in particular to a self-protected semi-automatic underwater arc cutting with a drug-cored wire that does not require additional oxygen supply. Background technique [0002] As the country further accelerates the development of marine resources, ship repair technology, underwater oil production drilling platform construction, submarine oil pipeline laying and other marine steel structure projects urgently need the development of underwater wet welding and cutting materials. Although my country has made great progress in underwater welding and cutting materials in recent years, the leading position of Western countries is still obvious. Therefore, we must make greater efforts to develop underwater welding and cutting materials. At present, in the underwater thermal cutting technology, the most...

Claims

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Application Information

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IPC IPC(8): B23K35/28
CPCB23K35/284B23K35/286
Inventor 刘多李洪亮冯吉才郭宁刘嘉伟
Owner HARBIN INST OF TECH AT WEIHAI
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