Gas shield welding wire for nuclear power

A technology of gas shielded welding and nuclear power, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of weld metal toughness decline, insufficient strength and toughness, etc., and achieve small welding spatter and stable mechanical properties , good workmanship
CN102528318AInactive Publication Date: 2012-07-04ANGANG STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANGANG STEEL CO LTD
Publication Date
2012-07-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a gas shield welding wire for nuclear power. By weight percentage, chemical components of the welding wire include 0.06-0.12% of C (carbon), 1.60-2.10% of Mn (manganese), 0.50-0.80% of Si (silicon), 1.40-1.80% of Ni (nickel), 0.1-0.3% of Ti (titanium), less than or equal to 0.025% of S (sulfur), less than or equal to 0.025% of P (phosphorus), 0.15-0.5% of Mo (molybdenum), 0.001-0.006% of B (boron) and the balance Fe (ferrum) and other inevitable impurities. The gas shield welding wire is less in welding spatter, fine in process and stable in mechanical performance, the tensile strength of weld metal ranges from 620MPa to 735MPa, the yield strength of the gas shield welding wire is higher than or equal to 415MPa, Akv8 at the temperature of -29 DEG C is larger than or equal to 47, and the requirements of the gas shield welding wire on strength and ductility can be ensured to be the same as those of the gas shield welding wire on as-welded conditions after no less than 10 hours of annealing treatment at the temperature ranging from 593 DEG C to 620 DEG C.
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Description

technical field

[0001] The invention belongs to the field of welding materials, in particular to a gas-shielded welding wire for nuclear power. Background technique

[0002] In recent years, with the rapid development of the domestic economy, the demand for energy has become increasingly tense. Nuclear energy, as the cleanest and safest energy source, has made great progress in China. As an efficient welding method, gas shielded welding is widely used in the construction of various steel structures. Different application environments and different steel types require that the corresponding welding materials have different characteristics to adapt to it. The containment shell for nuclear power The steel structure requires that the strength and impact performance of the steel after heat treatment and rolling will not decrease, and the construction standards require that the corresponding welding materials have the same performance as the steel type. And there is no correspond...

Claims

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