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Austenitic stainless steel buried arc welding wire for low-temperature equipment

A technology for austenitic stainless steel and equipment, which is applied in the field of austenitic stainless steel submerged arc welding wire for low-temperature equipment, can solve problems such as being difficult to find, and achieve the effects of beautiful shape, good welding process performance, and excellent low temperature resistance.

Active Publication Date: 2008-08-20
哈焊所华通(常州)焊业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to find completely suitable low-temperature, high-strength and high-toughness welding consumables in China, mainly relying on imports to meet demand

Method used

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  • Austenitic stainless steel buried arc welding wire for low-temperature equipment
  • Austenitic stainless steel buried arc welding wire for low-temperature equipment
  • Austenitic stainless steel buried arc welding wire for low-temperature equipment

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Embodiment

[0024] Embodiment: The preparation process of the welding wire is the same as the prior art. The welding wire is smelted by the supplier's steel plant resources, rolled and drawn into welding wire, and the surface is purified. The diameter of the welding wire is 3.2mm. The mass percentage of the chemical elements that make up the welding wire is: 0.017% carbon, 0.55% Silicon, 2.25% manganese, 0.023% phosphorus, 0.005% sulfur, 9.17% nickel, 20.23% chromium, 0.048% molybdenum, 0.10% copper, 0.045% cobalt, 0.011% titanium, 0.044 niobium , 0.097% vanadium, 0.022% tungsten, 0.002% boron, and the rest is iron. The flux used with the welding wire: SJ601; the material of the test plate: 304; the size of the test plate is length, width and height: 600×150×8mm, 30°V-shaped groove on one side; welding form: flat butt welding; welding current: 380A; Welding voltage: 32~34V; welding speed: 510mm / min; interlayer temperature: 60±15℃; preset anti-deformation 5mm.

[0025] The samples are ta...

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Abstract

The invention relates to a welding wire, in particular to a welding wire applying to austenitic submerged arc welding for low-temperature equipments, in terms of chemical composition and weight percent, comprising Cr: 19.0 to 23.0%, Ni: 9.0 to 12.0%, C: <=0.03%, Mn: 1.60 to 2.50%, Si: 0.30 to 0.60%, Mo: <=0.30%, Cu: <=0.30%, Co: <=0.20%, Ti: <=0.015%, Nb: <=0.05%, V: <=0.10%, B: <=0.005% and Fe as allowance. The welding wire has the advantages that: the welding wire steelmaking craft is stable; the drawing performance is good; the invention meets the welding technical requirements of the high-intensity, high-toughness and anti-corrosion steel with low temperature and low temperature equipments; the invention can apply to the steel of 500 to 750MPa strength level; the invention is suitable for large range of welding current and no blowhole; the moulding is beautiful; the weld joint can be well matched with the base material.

Description

Technical field [0001] The invention relates to a welding wire material, in particular to an austenitic stainless steel submerged arc welding welding wire for low-temperature equipment. Background technique [0002] With the rapid development of the national economy, modern industry is characterized by large-scale production and centralized gas supply production. Various gases have been widely used in machinery manufacturing, metallurgy, medicine, chemical industry, environmental protection, bioengineering, power, food and aerospace industries and other fields. Due to the problems of energy shortage and environmental protection caused by rapid industrial development, the demand for green energy natural gas has been placed in a prominent position. In addition, the top ten gas companies in the world have all entered the Chinese market, and a large-scale industrial gas market has been formed, which is developing at an annual growth rate of more than 10%. At the same time, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
Inventor 李振华居晓锋
Owner 哈焊所华通(常州)焊业股份有限公司
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