High intensity gas shielded welding wire, wire rod and application thereof

A gas-shielded welding wire and wire rod technology, applied in welding medium, welding equipment, welding equipment, etc., can solve the problems of unfavorable welding, increase crack sensitivity coefficient, increase production cost, etc., achieve excellent mechanical properties, reduce crack sensitivity coefficient, The effect of economical improvement

Active Publication Date: 2008-10-22
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These high-strength welding wires increase the strength by adding a large amount of precious alloying elements (Ni, Mo, B, Ti, Re, etc.). Although the mechanical properties meet the requirements, the higher alloying element content not only increases the production cost, but also ...

Method used

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  • High intensity gas shielded welding wire, wire rod and application thereof
  • High intensity gas shielded welding wire, wire rod and application thereof
  • High intensity gas shielded welding wire, wire rod and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] According to the composition design of the present invention, the production of welding wire wire rod is carried out, and the process includes: 1) converter; 2) refining; 3) die casting; 4) steel ingot rolling; 5) controlled rolling and cooling of steel billet; 6) spinning; 7) Collection; 8) Inspection; 9) Packaging. The production process of welding wire is as follows: 1) incoming inspection of wire rod; 2) rough drawing process; 3) copper plating process; 4) fine drawing process; 5) coil packaging process. The chemical composition of the deposited metal of the obtained welding wire is shown in Table 3, and the mechanical properties are shown in Table 8.

[0046] The finished product chemical composition (wt%) of table 3 embodiment 1 welding wire

[0047]

Embodiment 2

[0049] Production technology is identical with embodiment 1. The chemical composition of the deposited metal of the obtained welding wire is shown in Table 4, and the mechanical properties are shown in Table 8.

[0050] The finished product chemical composition (wt%) of table 4 embodiment 2 welding wire

[0051]

Embodiment 3

[0053] Production technology is identical with embodiment 1. The chemical composition of the deposited metal of the obtained welding wire is shown in Table 5, and the mechanical properties are shown in Table 8.

[0054] The finished product chemical composition (wt%) of table 5 embodiment 3 welding wire

[0055]

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Abstract

The invention provides a gas protection welding wire rod and a welding wire thereof. Both the wire rod and the welding wire comprises the following elements (according to the weight percent): C is 0.03 to 0.12, Si is 0.30 to 0.80, Mn is 1.2 to 2.2, S is equal to or less than 0.015, P is equal to or less than 0.020, Ni is 0.4 to 1.0, Cr is 0.1 to 0.5, Mo is 0.2 to 0.6, Ti is 0.06 to 0.2, and the rest is Fe and inevitable impurity elements. The welding wire provided by the invention has the advantages of simple chemical element design, small content of the precious alloy elements and low crack sensitivity coefficient, and the deposited metal has the advantages of high intensity, excellent crack resistance and low-temperature shock toughness and excellent dynamic performance. The welding wire of the invention is suitable for the welding of low alloy structure steel with 600 to 800MPa tensile strength, which is applicable to engineering mechanics, heavy trucks, hydraulic power, coal power and other industries.

Description

technical field [0001] The invention belongs to the field of welding materials, and more specifically, the invention relates to gas shielded welding wire materials. Background technique [0002] With its unique advantages, the gas shielded welding process has been widely used in the manufacturing industry in industrialized countries. The development of gas shielded welding technology has greatly improved the manufacturing technology level of the metal structure industry. Gas-shielded solid welding wire is a high-tech welding material. Its production and development adapt to the trend of high-quality, high-efficiency, automated, low-cost, and environmentally friendly welding production. The research and development of gas-shielded solid welding wire in my country began in the 1950s, but it has remained in the research stage for a long time. In the past 10 years, the technology has developed rapidly, but there is still a big gap compared with foreign countries. [0003] Curr...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K9/16
Inventor 屈朝霞
Owner BAOSHAN IRON & STEEL CO LTD
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