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Seawater corrosion resistant submerged arc welding wire

A technology of submerged arc welding wire and seawater resistance, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problems of lack of special welding materials, etc., and achieve good matching effect, good toughness and high strength.

Inactive Publication Date: 2010-03-10
HUBEI KMK WELDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a seawater corrosion-resistant submerged arc welding wire with excellent comprehensive mechanical properties, so as to solve the technical problem of lack of special welding materials when submerged arc welding is performed on existing ocean engineering steels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: measure each component according to the proportioning of the present invention, wherein Fe adopts low P, S steel billet, smelts the steel for welding wire by 200KG vacuum induction electric furnace, then through rolling, wire drawing, copper plating on the surface, coiling and other processes. into 4mm welding wire. The chemical composition of the wire is (Wt%): Cu0.30%, Cr0.76%, Ni0.40%, Mo0.18%, C0.09%, Si0.08%, Mn1.35%, Nd0.08%, P≤0.010%, S≤0.011%, the balance is iron and unavoidable impurities.

[0017] The deposited metal test was carried out with the above welding wire and SJ101 flux. The welding specifications are: welding current 260-280A, welding voltage 32V, welding speed 23.8cm / min, and stacking layers of 5 layers. The mechanical properties of the obtained deposited metal are: yield strength σ s (Mpa) = 550, tensile strength σ b (Mpa)=630, elongation δ 5 =23%, Axv,-30°C / J=83, Axv,-20°C / J=95.

[0018] The above-mentioned welding wire was us...

Embodiment 2

[0023] Embodiment 2: measure each component according to the proportioning described in the present invention, wherein Fe adopts low P, S billet, smelts the steel for welding wire by 200KG vacuum induction furnace, then through rolling, wire drawing, surface copper plating, coiling etc. Process is made welding wire, and the chemical composition of this welding wire is (Wt%): Cu0.20%, Cr1.25%, Ni0.35%, Mo0.25%, C 0.07%, Si0.22%, Mn1.38%, Nd0.05%, P≤0.009%, S≤0.009%, the balance is iron and unavoidable impurities.

[0024] The above-mentioned welding wire was used together with SJ101 flux to carry out the welding joint test. The test plate used in the test is a marine steel plate with a thickness of 16 mm produced by Baosteel, and its welded joints and welding specification parameters are the same as those in Example 1.

[0025] The visual inspection of the joint after welding shows that the surface of the weld is evenly formed, smoothly transitions to the base metal, and there...

Embodiment 3

[0027] Embodiment 3: measure each component according to the proportioning described in the present invention, wherein Fe adopts low P, S steel billet, smelts the steel for welding wire by 200KG vacuum induction furnace, then through rolling, wire drawing, surface copper plating, coiling etc. Process is made welding wire, and the chemical composition of this welding wire is (Wt%): Cu0.35%, Cr0.80%, Ni0.55%, Mo0.15%, C 0.11%, Si0.15%, Mn1.0%, Nd0.1%, P≤0.008%, S≤0.009%, the balance is iron and unavoidable impurities.

[0028] The above-mentioned welding wire was used together with SJ101 flux to carry out the welding joint test. The test plate used in the test is a marine steel plate with a thickness of 16 mm produced by Baosteel, and its welded joints and welding specification parameters are the same as those in Example 1. The visual inspection of the joint after welding shows that the surface of the weld is evenly formed, smoothly transitions to the base metal, and there are ...

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PUM

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Abstract

A seawater corrosion resistant submerged arc welding wire is characterized in that the welding wire is made by the following chemical components according to mass percentage: 0.20-0.35 percent of Cu, 0.65-1.15 percent of Cr, 0.35-0.55 percent of Ni, 0.15-0.25 percent of Mo, 0.07-0.11 percent of C, 0.07-0.22 percent of Si, 1.0-1.38 percent of Mn, 0.05-0.1 percent of Nd, not more than 0.012 percentof P, not more than 0.012 percent of S, and the balance of iron and inevitable impurities. By reasonable design to the chemical components, the seawater corrosion resistant submerged arc welding wireis characterized by corrosion resistance, high strength, good toughness, strong anti-welding cold cracking ability and the like, with the tensile strength of greater than 600MPa and the minus 40 DEG C low temperature impact property of Axv of not less then 65J. After welding, the forming is beautiful, harmful defects such as crack, welding beading and undercut and the like do not exist, and the welding seam has good matching effect with the ocean engineering steel, thereby meeting the high requirements of seawater corrosion resistance, high strength, and high toughness of the welding seam.

Description

technical field [0001] The invention relates to welding wire, in particular to a seawater corrosion-resistant submerged arc welding wire. Background technique [0002] With the development of my country's marine industry, the comprehensive mechanical properties and seawater corrosion resistance of steel used in marine transportation and offshore engineering are increasing. According to the welding requirements of marine engineering steel, as welding materials for marine engineering steel, it must not only have Excellent mechanical properties and seawater corrosion resistance, but also have good process adaptability. Therefore, there is a great demand for high-performance and seawater corrosion-resistant welding wires. However, looking at the existing welding materials, it is rare to find professional seawater corrosion-resistant submerged arc welding wires with good quality and low cost. Contents of the invention [0003] The purpose of the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): B23K35/30
Inventor 樊兴龙李志远
Owner HUBEI KMK WELDING MATERIALS
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