MIG welding solid-core welding wire for high-manganese austenite low-temperature steel and welding process of MIG welding solid-core welding wire
A technology of solid welding wire and welding process, which is applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of unreported welding process technology, low mechanical properties of weld metal, and large smoke and dust, so as to achieve health protection, Excellent mechanical properties and high welding efficiency
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Embodiment 1
[0033] A MIG welding solid wire for high manganese austenitic low temperature steel and its welding process.
[0034] The chemical composition of the MIG welding solid wire for high manganese austenitic low temperature steel is: C is 0.20-0.30wt%; Si is 0.03-0.04wt%; Mn is 20-25wt%; Ni is 1.2- 2wt%; Cr 1.1~1.8wt%; Cu 0.55~0.70wt%; W 1.0~1.5wt%; Mo 1.3~1.8wt%; Al 1.5~2.0wt%; Nb+V+Ti+B +RE is 0.25-0.5wt%; P≤0.002wt%; S≤0.001wt%; the balance is Fe and unavoidable impurities.
[0035] The welding process of MIG welding solid wire for high manganese austenitic low temperature steel adopts inert gas protection; in the inert gas: Ar is 98Vol%, N 2 1Vol%, O 2 1Vol%; the nozzle height is 10-15mm, the dry elongation of the welding wire is 6-13mm, the welding current is 40-150A, the arc voltage is 18-19V, the welding speed is 30-60cm / min, the droplet transfer is a short-circuit transfer, The welding position is all positions.
[0036] The diameter of the MIG welding solid wire for hi...
Embodiment 2
[0040] A MIG welding solid wire for high manganese austenitic low temperature steel and its welding process.
[0041] The chemical composition of the MIG welding solid wire for high manganese austenitic low temperature steel is: C is 0.40-0.60wt%; Si is 0.04-0.05wt%; Mn is 28-32wt%; Ni is 0.1-0.1wt%. 0.5wt%; Cr 0.1~0.6wt%; Cu 0.70~0.85wt%; W 1.5~1.9wt%; Mo 1.8~2.3wt%; Al 1.0~1.5wt%; Nb+V+Ti+ B+RE≤0.1wt%; P≤0.002wt%; S≤0.001wt%; the balance is Fe and unavoidable impurities;
[0042] The welding process of MIG welding solid wire for high manganese austenitic low temperature steel adopts inert gas protection; in the inert gas: Ar is 97Vol%, N 2 3Vol%; the nozzle height is 10-15mm, the dry elongation of the welding wire is 6-13mm, the welding current is 80-180A, the arc voltage is 18-19V, the welding speed is 30-60cm / min, the droplet transfer is short-circuit transfer, The welding position is all positions.
[0043] The diameter of the MIG welding solid wire for high manganese ...
Embodiment 3
[0047] A MIG welding solid wire for high manganese austenitic low temperature steel and its welding process.
[0048] The chemical composition of the MIG welding solid wire for high manganese austenitic low temperature steel is: C is 0.30-0.40wt%; Si≤0.03wt%; Mn is 25-28wt%; Ni is 0.5-1.2wt% %; Cr is 0.6~1.1wt%; Cu is 0.85~1.00wt%; W is 0.5~1.0wt%; Mo is 2.3~3.0wt%; Al is 0.5~1.0wt%; Nb+V+Ti+B+ RE is 0.1-0.25wt%; P≤0.002wt%; S≤0.001wt%; the balance is Fe and unavoidable impurities.
[0049] The welding process of MIG welding solid wire for high manganese austenitic low temperature steel adopts inert gas protection; in the inert gas: Ar is 92Vol%, N 2 4Vol%, O 2 4Vol%; the nozzle height is 20-25mm, the dry elongation of the welding wire is 7-15mm, the welding current is 300-500A, the arc voltage is 24-26V, the welding speed is 30-60cm / min, the droplet transition is jet transition, The welding positions are flat welding, horizontal welding and vertical welding.
[0050] The ...
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