A silicon-toughened high-chromium cast iron type self-shielding flux-cored welding wire and its preparation method
A technology of high-chromium cast iron and flux-cored wire, which is applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems that the wear resistance cannot be guaranteed, and the hardness of the surfacing alloy decreases, so as to achieve good welding performance and good welding performance. Road surface forming, good toughness effect
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Embodiment 1
[0029] A silicon-toughened high-chromium cast iron type self-shielding flux-cored welding wire, comprising a low-carbon steel strip and a flux core, the flux core is filled in the steel strip, and the composition of the flux core is prepared according to the following quality: 75g of 80-mesh high-carbon ferrochrome, 12g of 80-mesh ferrosilicon, 0.5g of 60-mesh graphite, 1g of 200-mesh graphite, 1g of 60-mesh ferroboron, 2g of 200-mesh ferroboron, 1g of 60-mesh aluminum-magnesium alloy, 1g of 200-mesh aluminum-magnesium alloy, 1.5g of 60 mesh manganese powder, 1g of 200 mesh manganese powder, 4g of 80 mesh iron powder. The various powders taken are put into the powder mixer, mixed for 40 minutes, and then the mixed powder is added into the U-shaped 21×0.5mm H08A carbon steel belt groove, and the filling rate is 52%. Then close the U-shaped groove so that the powder is wrapped therein. Then make it pass through one or more of the wire drawing dies with diameters of 4.2mm, 3.8mm...
Embodiment 2
[0031]A silicon-toughened high-chromium cast iron type self-shielding flux-cored welding wire, comprising a low-carbon steel strip and a flux core, the flux core is filled in the steel strip, and the composition of the flux core is prepared according to the following quality: 60g of 80-mesh high-carbon ferrochrome, 16g of 80-mesh ferrosilicon, 1g of 60-mesh graphite, 1.5g of 200-mesh graphite, 5g of 60-mesh ferroboron, 3g of 200-mesh ferroboron, 2g of 60-mesh aluminum-magnesium alloy, 1.5g of 200-mesh aluminum-magnesium alloy , 2g of 60 mesh manganese powder, 1.5g of 200 mesh manganese powder, 6.5g of 80 mesh iron powder. The various powders taken are put into the powder mixer, mixed for 40 minutes, and then the mixed powder is added into the U-shaped 21×0.5mm H08A carbon steel belt groove, and the filling rate is 56%. Then close the U-shaped groove so that the powder is wrapped therein. Then make it pass through one or more of the wire drawing dies with diameters of 4.2mm, 3...
Embodiment 3
[0033] A silicon-toughened high-chromium cast iron type self-shielding flux-cored welding wire, comprising a low-carbon steel strip and a flux core, the flux core is filled in the steel strip, and the composition of the flux core is prepared according to the following quality: 65g of 80-mesh high-carbon ferrochrome, 15g of 80-mesh ferrosilicon, 0.6g of 60-mesh graphite, 2g of 200-mesh graphite, 3g of 60-mesh ferroboron, 1.5g of 200-mesh ferroboron, 1.2g of 60-mesh aluminum-magnesium alloy, 1.8g of 200-mesh aluminum Magnesium alloy, 1.6g of 60 mesh manganese powder, 3g of 200 mesh manganese powder, 5.3g of 80 mesh iron powder. The various powders taken are put into the powder mixer, mixed for 40 minutes, and then the mixed powder is added into the U-shaped 21×0.5mm H08A carbon steel belt groove, and the filling rate is 55%. Then close the U-shaped groove so that the powder is wrapped therein. Then make it pass through one or more of the wire drawing dies with diameters of 4.2m...
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