Surface hardening treatment method for main cutter board of loader shovel
A technology of hardening treatment and main knife plate, which is applied in the direction of welding medium, arc welding equipment, welding/cutting medium/material, etc., can solve the problems of low hardness of main knife plate, high use cost, short service life, etc., and achieve firm connection and stacking The effect of fast welding speed and low cost
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[0014] Example 1
[0015] A surface hardening treatment method for the main blade of a loader bucket: surfacing welding is performed on the surface of the main blade of a loader bucket to form a metal surfacing layer 5 with a thickness of 3 mm and a surface hardness greater than HRC40 on the outer surface of the cutting edge. like figure 2 , image 3 The surfacing process adopts carbon dioxide gas shielded welding, and its welding parameters are: the wire material is 1.6 mm in diameter, the carbon content is 0.3%, the chromium content is less than 5%, and the molybdenum content is less than 4%. Wear-resistant welding wire, the welding current is 220 amps, the arc voltage is 24 volts, and the flow rate of carbon dioxide gas is 12 liters / min; the surface of the main blade of the loader bucket is surfacing welding in a direction parallel to the cutting edge.
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[0016] Example 2
[0017] A surface hardening treatment method for the main blade of a loader bucket: surfacing welding is performed on the surface of the main blade of a loader bucket, so that the outer surface of the cutting edge forms a metal surfacing layer with a thickness of 5 mm and a surface hardness greater than HRC40, such as figure 2 , image 3 The surfacing process adopts carbon dioxide gas shielded welding, and its welding parameters are: the wire material is 1.6 mm in diameter, the carbon content is 0.6%, the chromium content is less than 5%, and the molybdenum content is less than 4%. Wear-resistant welding wire, the welding current is 240 amps, the arc voltage is 26 volts, and the flow rate of carbon dioxide gas is 16 liters / min; the surface of the main blade of the loader bucket is surfacing welding in a direction parallel to the cutting edge.
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