Flux-cored cutting wire for underwater wet-type arc cutting and preparation method thereof

An arc cutting and flux core technology, applied in welding/cutting media/materials, manufacturing tools, welding equipment, etc., can solve the problems of low cutting automation and large oxygen consumption, achieve high conversion rate, improve ignition ability, the effect of improving the stability of combustion

Inactive Publication Date: 2012-07-11
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japanese patent JP02324521, the patent name "Method for arc-cutting steel material in water" proposes an optimized underwater oxygen-arc cutting technology, which makes the steel plate more easily oxidized and removes slag more conveniently, but this method is still popular Inadequacies: need to provide additional oxygen, and the consumption of oxygen is large, and there are still shortcomings such as low degree of cutting automation in practical applications
The present invention does not see relevant report so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Drug core composition ratio

[0026] Weigh 8% dolomite, 0.5% quartz sand, 0.1% cesium carbonate, 3% potassium carbonate, 2.4% ceria, 4.8% manganese dioxide, and 81.2% calcium peroxide.

[0027] 2. Preparation method

[0028] 1. Mix the obtained medicinal powder evenly and pass through a 100-mesh sieve;

[0029] 2. Select the H08A steel strip with a thickness of 0.5mm and roll it into a U-shaped groove;

[0030] 3. Fill the well-mixed powder into the U-shaped groove, and close the U-shaped groove;

[0031] 4. Use a wire drawing machine to pass the drug core cut wire through drawing dies with different diameters, draw and reduce the diameter one by one, and finally obtain the drug core cut wire with a diameter of 2.2mm.

[0032] 3. Beneficial effects

[0033] Under the conditions of cutting current 450-500A and cutting voltage 45-50V, the flux-core cutting wire prepared in this example is used for underwater cutting of Q235A steel plate with a thickness of 20mm, an...

Embodiment 2

[0035] The composition of the drug core according to the mass percentage ratio is: 12% dolomite, 1% quartz sand, 0.5% cesium carbonate, 1.5% potassium carbonate, 0.6% cerium dioxide, 6% manganese dioxide, 78.4% of barium peroxide.

[0036] A H08A steel strip with a thickness of 0.5 mm was selected and prepared according to the preparation method in Example 1 to obtain a 2.2 mm diameter cored wire.

[0037] Under the conditions of cutting current 450-500A and cutting voltage 45-50V, the flux-core cutting wire prepared in this example is used for underwater cutting of Q235A steel plate with a thickness of 20mm, and the maximum cutting speed is 220mm / min. , No arc breaking, bridging, or slag hanging occurred.

Embodiment 3

[0039] The composition of the drug core according to the mass percentage ratio is: 16% dolomite, 2% quartz sand, 2.5% cesium carbonate, 0.1% potassium carbonate, 1.6% cerium dioxide, 4% manganese dioxide, 73.8% of calcium peroxide.

[0040] A H08A steel strip with a thickness of 0.5 mm was selected and prepared according to the preparation method in Example 1 to obtain a 2.2 mm diameter cored wire.

[0041] Under the conditions of cutting current 450-500A and cutting voltage 45-50V, the flux-core cutting wire prepared in this example is used for underwater cutting of Q235A steel plate with a thickness of 20mm, and the maximum cutting speed is 240mm / min. , No arc breaking, bridging, or slag hanging occurred.

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Abstract

The invention discloses a flux-cored cutting wire for underwater wet-type arc cutting and a preparation method thereof. The flux-cored cutting wire is composed of a flux core and an outer layer steel belt, and is characterized in that the flux core is prepared from the following flux powder components in percentage by mass: 8-24% of dolomite, 0.5-4% of quartz sand, 0.1-3% of cesium carbonate, 0.1-3% of potassium carbonate, 0.6-2.4% of cerium oxide, 2.4-4.8% of manganese peroxide and the balance of calcium peroxide or barium peroxide. The preparation method comprises the following steps: evenly mixing the prepared flux powder; preparing the outer layer steel belt into a U-shaped slot by using a forming machine; filling the evenly mixed flux powder into the U-shaped slot, and closing the slot notch; and finally, gradually drawing by using a drawing machine to obtain the flux-cored cutting wire. The flux-cored cutting wire is used for cutting underwater low-carbon steel and low-alloy steel, and does not need additional gas shielding or excess oxygen supply.

Description

technical field [0001] The invention belongs to the technical field of welding and cutting materials for metal materials, and relates to a cutting wire, more specifically, an environment-friendly flux-cored wire for self-protected underwater wet arc cutting and a preparation method thereof. Background technique [0002] Oxygen-arc cutting method and oxygen-flame cutting method are commonly used in underwater cutting technology. Both belong to the category of thermal cutting. They use the high temperature generated by electric arc or flame to melt the metal to be cut, and need to inject additional oxygen to burn the molten metal and remove it. The oxide slag is blown off to form a cut. Japanese patent JP02324521, the patent name "Method for arc-cutting steel material in water" proposes an optimized underwater oxygen-arc cutting technology, which makes the steel plate more easily oxidized and removes slag more conveniently, but this method is still popular Disadvantages: Addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368B23K35/30B23K35/40
Inventor 王俭辛王加友黎文航朱杰
Owner JIANGSU UNIV OF SCI & TECH
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