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

A duplex stainless steel, manufacturing method technology, applied in the direction of manufacturing tools, welding media, welding equipment, etc., can solve the problems of unfavorable development of nuclear power industry, long procurement cycle, difficult quality control, etc., and achieve excellent pitting resistance and good workmanship Performance and mechanical properties, the effect of small splash

Inactive Publication Date: 2015-07-08
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment 1～5

[0040] For above embodiment 1~5, a kind of manufacturing method of nuclear grade I 2209 duplex stainless steel welding wire, its steps are:

[0041] (1) Mix the pure iron contained in the formula with elements that are difficult to be oxidized such as Ni, Cr, and Mo, and then melt it in a vacuum induction furnace. During the melting period, the vacuum degree is controlled below 7.83Pa, and then add the formula to the furnace content of Si, N, Cu, stir fully after complete melting;

[0042] (2) When the melting temperature reaches 1580°C, when the molten steel is calm, cut off the power and pump it to a vacuum for 20-25 minutes, then turn on the power to raise the temperature. After the conjunctiva is melted, add C in the formula for refining, and the refining temperature is kept at 1580°C-1600°C , the refining time is 25-30 minutes;

[0043] (3) Cool down 10 minutes before tapping, fill with Ar320-420Pa after fully and evenly stirring, add the Mn content in the formula, and t...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/40
Inventor 许祥平王锡岭杨骏杨家旺夏春智邹家生
Owner JIANGSU UNIV OF SCI & TECH
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