Kernel I-grade 2209 double-phase stainless steel welding wire and manufacturing method

Abstract

The invention discloses a kernel I-grade 2209 double-phase stainless steel welding wire and a manufacturing method. The kernel I-grade 2209 double-phase stainless steel welding wire is prepared from the following components in percentage by mass: 0 to 0.03% of C, 0.5 to 2.0% of Mn, 0 to 0.90% of Si, 0 to 0.03% of S, 0 to 0.03% of P, 21.5 to 23.5% of Cr, 7.5 to 9.5% of Ni, 2.5 to 3.5% of Mo, 0.08 to 0.20% of N, 0 to 0.75% of Cu, and the balance of Fe. According the kernel I-grade 2209 double-phase stainless steel welding wire, alloy elements in an alloy system are reasonably mixed, so that the welding wire is high in process performance and mechanical performance, small in splashing, high in deslagging performance, outstanding in stress corrosion cracking resistance and pitting resistance; the alloy system is designed, so that the stable phase ratio of the weld joint metal is ensured; the manufacturing method is high in strength and high in plasticity of the manufactured welding wire.

Description

technical field [0001] The invention belongs to the field of welding materials, and relates to a nuclear grade I 2209 duplex stainless steel argon arc welding wire and a manufacturing method. Background technique [0002] With the passage of time, my country's nuclear power industry will enter an era of rapid development. With the rapid development of the metal manufacturing and stainless steel industry, the product technical requirements for the argon arc welding wire used in the welding process are also very high. However, nuclear power welding materials generally rely on imports. In order to realize the localization of nuclear power welding materials, it is necessary to develop domestic nuclear power welding materials that can replace imported nuclear power welding materials. In the field of nuclear power, duplex stainless steel is widely used in reactor pressure vessels, reactor cores, reactor internals, control rod drive mechanisms, primary circuit piping and coolant p...

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Problems solved by technology

The welding materials used are all monopolized by foreign companies, not only expensive, long procurement cycle, difficult quality control, but also the risk of being blocked due to political reasons, which is not conducive to the development of my country's nuclear power industry

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