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Argon tungsten arc welding method for nickel-based alloy

A technology of argon tungsten arc welding and welding method, applied in welding equipment, arc welding equipment, metal processing equipment and other directions, can solve the problems of incomplete penetration and poor liquid fluidity of molten pool, etc., and achieve the effect of good mechanical properties

Active Publication Date: 2013-02-27
WISDRI WUHAN WIS IND FURNACE
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Problems solved by technology

[0004] In addition, when nickel-based alloys are welded, the liquid fluidity of the molten pool is poor, and it is easy to produce incomplete penetration.

Method used

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  • Argon tungsten arc welding method for nickel-based alloy

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Embodiment Construction

[0038] The manual argon tungsten arc welding process of Inconel 601 nickel-based alloy will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Selection of welding materials

[0040] Use an alloy analyzer to measure the actual alloying element content of the Inconel 601 nickel-based alloy material, and select a straight welding wire with a slightly larger percentage of the alloying element composition than the base metal and relatively less harmful impurity elements such as S and P—the brand is ERNiCrFe-11, and the length is 1m, the diameter of the welding wire for backing welding is φ1.2mm, and the diameter of the welding wire for filling and covering welding is φ2.4mm; the weight percentage content of the main elements in the welding wire is as follows: C≤0.2%, Mn≤0.25%, Si≤0.5%, Cu≤0.1%, Al 1.5%-2.4%, Ti 0.1%-0.2%, Ni≥58%, Cr 21%-25%, Fe balance.

[0041] Groove preparation:

[0042] Such as figure 1 As sho...

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Abstract

The invention discloses an argon tungsten arc welding method for nickel-based alloy. The method comprises the following steps: (1) selecting a solder material, (2) making pre-welding preparation and making a bevel, (3) performing multi-layer multi-pass welding operation under such a condition that the weld inter-layer temperature is not more than 150 DEG C, and setting specific parameters of welding process, and (4) performing post-welding inspection. The method solves the problems of the Inconel 601 nickel-based alloy welding operation, such as high risk of thermal cracks, poor fusion penetration effect and tungsten inclusion, and effectively prevents the formation of air bubbles in weld seams, thereby ensuring that the produced welded joints have good mechanical property, corrosion resistance and attractive appearance. The ideal welding technique method is provided for the manual argon tungsten arc welding operation of Inconel 601 nickel-based alloy.

Description

technical field [0001] The invention relates to the technical field of welding technology, in particular to a manual tungsten argon arc welding method for nickel-based alloys. Background technique [0002] Inconel 601 is a heat-resistant and corrosion-resistant nickel-based alloy. The high Cr content provides resistance to various corrosive media and high-temperature environments. The addition of Al content makes it excellent in oxidation resistance in high-temperature sulfur-containing atmospheres. At the same time, the control of carbon content and grain size makes the material have high creep rupture strength. Due to its excellent high-temperature mechanical properties and corrosion resistance, Inconel 601 alloy is easy to process and form. As a weldable structural material, it has been widely used in petrochemical, nuclear power, industrial heating and other fields. [0003] The welding performance of nickel-based heat-resistant and corrosion-resistant alloys is similar...

Claims

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Application Information

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IPC IPC(8): B23K9/16B23K9/235
Inventor 余正许文峰汤锦明胡志容王志敏
Owner WISDRI WUHAN WIS IND FURNACE
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