Low-cost flux-cored cutting wire for underwater wet-type arc cutting and preparation method thereof
An arc cutting, low-cost technology, applied in the direction of arc welding equipment, welding/welding/cutting items, welding/cutting media/materials, etc., can solve the problems of low degree of cutting automation and large oxygen consumption, and achieve favorable Arc stability, strong ionization ability, and the effect of improving arc stability
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Embodiment 1
[0026] 1. Drug core composition ratio
[0027] Weigh 6% sodium bicarbonate, 60% limestone, 2% potassium carbonate, 0.5% cerium oxide, and 31.5% sodium percarbonate.
[0028] 2. Preparation method
[0029] 1. Mix the obtained medicinal powder evenly and pass through a 100-mesh sieve;
[0030] 2. Dry the uniformly mixed powder at 50°C;
[0031] 3. Select the H08A steel strip with a thickness of 0.5mm, roll it into a U-shaped groove, fill the uniformly mixed powder into the U-shaped groove, close the U-shaped groove, and control the powder filling rate at 20%;
[0032] 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.
[0033] 3. Beneficial effects
[0034] Under the conditions of cutting current 450-500A and cutting voltage 45-50V, the flux-cored wire prepared in this example is used for underwater cutting of Q...
Embodiment 2
[0036] The composition of the drug core according to the mass percentage is: 9% sodium bicarbonate, 48% limestone, 0.2% potassium carbonate, 2.5% lanthanum oxide, and 40.3% sodium percarbonate.
[0037] 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.
[0038] 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 150mm / min. , There is no bridging or hanging slag phenomenon.
Embodiment 3
[0040] The composition of the drug core according to the mass percentage is: 12% of sodium bicarbonate, 52% of limestone, 1.5% of potassium carbonate, 1% of lanthanum oxide, and 33.5% of sodium percarbonate.
[0041] 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.
[0042] 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 140mm / min. , There is no bridging or hanging slag phenomenon.
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Abstract
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