Single-arc double-wire swing surfacing process
An arc and process technology, applied in the field of single-arc double-wire swing surfacing technology, can solve the problems of difficult performance requirements, high surfacing dilution rate, large penetration depth, etc. Pure effect of solder layer metal
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Embodiment 1
[0010] The single-arc double-wire oscillating surfacing welding process of the present invention has the following process steps: adopt a single-power DC welding machine, connect positive and negative electrodes to two separate insulated wire feeder columns, and the two wires sent by the wire feeder have an included angle of 7°, the two wire feeders are installed on the same welding mechanical swing, swinging during welding, the swing width is 10mm, the swing frequency is 20 times / min, the surfacing welding current is 300A, the voltage is 26V, and the welding speed is 120mm / min, the hardness HRC is 70. The welding wire used is high chromium cast iron welding wire, and the weight percentage of high chromium cast iron welding wire is: C 5%; Cr 28%; Mn 2% Fe 65%.
Embodiment 2
[0012] The single-arc double-wire oscillating surfacing welding process of the present invention has the following process steps: adopt a single-power DC welding machine, connect positive and negative electrodes to two separate insulated wire feeder columns, and the two wires sent by the wire feeder have an included angle of 10°, the two wire feeders are installed on the same welding mechanical swing, swinging during welding, the swing width is 30mm, the swing frequency is 40 times / min, the surfacing welding current is 400A, the voltage is 31V, and the welding speed is 160mm / min, the hardness HRC is 80. The welding wire used is high chromium cast iron welding wire, and the weight percentage of high chromium cast iron welding wire is: C 5.5%; Cr 29%; Mn 3% Fe 62.5%.
Embodiment 3
[0014] The single-arc double-wire oscillating surfacing welding process of the present invention has the following process steps: adopt a single-power DC welding machine, connect positive and negative electrodes to two separate insulated wire feeder columns, and the two wires sent by the wire feeder have an included angle of 15°, the two wire feeders are installed on the same welding mechanical swing, swinging during welding, the swing width is 60mm, the swing frequency is 60 times / min, the surfacing welding current is 500A, the voltage is 36V, and the welding speed is 200mm / min, the hardness HRC is 90. The welding wire used is high chromium cast iron welding wire, and the weight percentage of high chromium cast iron welding wire is: C 6%; Cr 30%; Mn 4% Fe 60%.
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