Full-automatic submerged-arc welding solid welding wire for nickel-saving high-manganese low-temperature steel
A solid welding wire, fully automatic technology, applied in the direction of arc welding equipment, welding/welding/cutting items, welding medium, etc., can solve the problem of no elongation of weld metal, large fluctuation of strength impact toughness, high cost of welding wire, etc. problems, to achieve the effects of excellent mechanical property stability, excellent ultra-low temperature toughness, and low production cost
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[0015] Example 1
[0016] A fully automatic submerged arc welding solid core welding wire for nickel-saving type high manganese and low temperature steel. The chemical composition of the fully automatic submerged arc welding solid wire is: C is 0.20wt%, Si is 0.07wt%, Mn is 31wt%, Cr is 2wt%, N is 0.02%, Mo is 0.6wt%, P ≤0.002wt%, S≤0.001wt%, the balance is Fe and inevitable impurities.
[0017] The fully automatic submerged arc welding solid wire for nickel-saving type high manganese low temperature steel prepared in this example is used for welding high manganese low temperature steel plates to manufacture LNG storage tanks. The diameter of the fully automatic submerged arc welding solid wire is Φ2.4mm, The fully automatic submerged arc welding method is adopted.
[0018] The high-manganese low-temperature steel sheet is a 25Mn ultra-low temperature steel sheet with a thickness of 20mm, and the chemical composition of the 25Mn ultra-low temperature steel sheet is: C is ≤0....
Example Embodiment
[0022] Example 2
[0023] A fully automatic submerged arc welding solid core welding wire for nickel-saving type high manganese and low temperature steel. The chemical composition of the fully automatic submerged arc welding solid wire is: C is 0.35wt%, Si is 0.10wt%, Mn is 28wt%, Ni is 0.5wt%, Cr is 6wt%, N is 0.08%, P ≤0.002wt%, S≤0.001wt%, the balance is Fe and inevitable impurities.
[0024] The fully automatic submerged arc welding solid wire for nickel-saving type high manganese low temperature steel prepared in this example is used for welding high manganese low temperature steel plates to manufacture LNG storage tanks. The diameter of the fully automatic submerged arc welding solid wire is Φ2.4mm, The fully automatic submerged arc welding method is adopted. The adopted fully automatic arc submerged welding process is the same as that of Example 1.
[0025] The high-manganese and low-temperature steel plates and groove patterns welded in this example are the same as ...
Example Embodiment
[0028] Example 3
[0029] A fully automatic submerged arc welding solid core welding wire for nickel-saving type high manganese and low temperature steel. The chemical composition of the fully automatic submerged arc welding solid wire is: C is 0.45wt%, Si is 0.03wt%, Mn is 26wt%, Ni is 1.2wt%, Cr is 4wt%, N is 0.04%, Mo is 1wt%, P≤0.002wt%, S≤0.001wt%, and the balance is Fe and inevitable impurities.
[0030] The fully automatic submerged arc welding solid wire for nickel-saving type high manganese low temperature steel prepared in this example is used for welding high manganese low temperature steel plates to manufacture LNG storage tanks. The diameter of the fully automatic submerged arc welding solid wire is Φ2.4mm, The fully automatic submerged arc welding method is adopted. The adopted fully automatic arc submerged welding process is the same as that of Example 1.
[0031]The high-manganese and low-temperature steel plates and groove patterns welded in this example ar...
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