Ultra-low-carbon martensite wear-resistant automatic welding wire

A martensitic and automatic welding technology, applied in the field of welding materials in the field of welding technology, can solve the problems of high strength, wear resistance, corrosion resistance matching, and unsatisfactory comprehensive mechanical properties, and achieve low cost, easy comprehensive mechanical properties, and easy use convenient effect

Active Publication Date: 2010-07-07
JIANGSU XINHUA ALLOY ELECTRIC
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Problems solved by technology

The comprehensive mechanical properties of these two kinds of welding wire materials cannot meet the design requirements of ships, large hydropower stations, turbine shafts, impellers, blades and other components, and cannot match them with high strength, wear resistance and corrosion resistance

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  • Ultra-low-carbon martensite wear-resistant automatic welding wire

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Embodiment Construction

[0053] The present invention is further described and understood by non-limiting examples below.

[0054] The ultra-low carbon martensitic wear-resistant automatic welding wire of the present invention has prepared six groups of embodiments, and the components and contents of the welding wire materials in the 1-6 groups of embodiments are calculated by weight %, as follows:

[0055] The first group: C: 0.02%, Si: 0.75%, Mn: 1.20%, P: 0.015%, S: 0.008%, Cr: 16.30%, Ni: 5.50%, Mo: 0.50%, N: 0.035%, Re : 0.08%, Ca: 0.009%;

[0056] The second group: C: 0.016%, Si: 0.40%, Mn: 0.85%, P: 0.013%, S: 0.004%, Cr: 15.50%, Ni: 5.10%, Mo: 0.60%, N: 0.035%, Re : 0.06%, Ca: 0.007%;

[0057] The third group: C: 0.025%, Si: 0.50%, Mn: 1.10%, P: 0.017%, S: 0.007%, Cr: 14.50%, Ni: 4.80%, Mo: 0.70%, N: 0.035%, Re : 0.05%, Ca: 0.004%;

[0058] The fourth group: C: 0.021%, Si: 0.45%, Mn: 0.90%, P: 0.016%, S: 0.009%, Cr: 13.50%, Ni: 4.50%, Mo: 0.45%, N: 0.035%, Re : 0.09%, Ca: 0.008%;

[0059...

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Abstract

The invention relates to an ultra-low-carbon martensite wear-resistant automatic welding wire. The welding wire comprises the following components by weight percent: 0.030% or less of C, 0.40-0.80% of Si, 0.80-1.20% of Mn, 0.020% or less of P, 0.010% or less of S, 12.0-16.50% of Cr, 3.80-5.50% of Ni, 0.40-0.80% of Mo, 0.035% of N, 0.010-0.10% of Re, 0.010% or less of Ca and the balance Fe and other unavoidable impurities. The preparation technology of the invention is basically the same of that of the existing technologies. The preparation technology comprises the following steps: mixing materials according to the design components of the invention, smelting in a vacuum refining furnace, striking and forging, performing hot rolling, normalizing and tempering under high temperature, performing multi-pass drawing, tempering and drawing, and when the welding wire is drawn to have a diameter of 2.2 mm, continuously drawing to obtain the welding wire with a diameter of 1.2mm or 1.6 mm (according to the design demand of the user) and a tensile strength of 1400MPa. The welding wire is applicable to the resurfacing welding preparation and repair of large hydropower stations, parts of water turbines such as revolving shafts, impellers and blades and marine ships. The weld joint has high wear resistance and corrosion resistance; and the welding wire material of the invention has good weldability and processability and high working efficiency and can be welded automatically.

Description

technical field [0001] The invention relates to a welding material in the field of welding technology, in particular to an ultra-low carbon martensitic wear-resistant automatic welding wire. More specifically, after the invention adopts pure argon or argon-enriched gas shielding welding, the comprehensive mechanical properties of the weld are good, and it is an ultra-low carbon martensitic wear-resistant automatic welding wire with excellent welding process performance. It is mainly used in large-scale hydropower stations, hydraulic turbine shafts, impellers, blades, and the manufacture and repair of high-speed offshore ship parts. Background technique [0002] In industrial production, the parts are scrapped due to excessive surface wear and tear. The scrapped parts are recycled and recycled to waste energy and pollute the environment. The advancement of industrial technology has made modern production more and more demanding on the service life of machine parts. It is of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
Inventor 华大凤王树平
Owner JIANGSU XINHUA ALLOY ELECTRIC
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