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High-toughness low-alloy solid welding wire

A solid-core welding wire and low-alloy technology, applied in welding medium, welding equipment, metal processing equipment, etc., can solve the problems of high cost, single variety, and inability to meet the needs of gas shielded welding of high-strength structural steel plates, and achieve stable quality, Ease of wire drawing process

Active Publication Date: 2010-12-08
YICHANG MONKEY KING WELDING WIRE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the gas shielded welding wire used for welding high-strength structural steel plates (830MPa, 900MPa grade) in China is single, which is far from meeting the growing demand for gas shielded welding of high-strength structural steel plates.
Low-matching Mn-Si series welding wire ER83-1 is generally used in China for welding high-strength structural steel plates, but its cost is high and it is not suitable for large-scale promotion

Method used

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  • High-toughness low-alloy solid welding wire

Examples

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Comparison scheme
Effect test

Embodiment 1

[0029] A 90-ton electric furnace is used to smelt welding wire steel with low S and P billets. The steel for welding wire is refined and rolled into steel wire rod for welding. After wire drawing, copper plating and winding processes, it is made into a welding wire of Ф1.2mm. . The chemical composition of the wire is by weight percentage: C 0.071, Si 0.63, Mn 1.62, Ni1.32, Mo 0.35, Cr 0.22, Ti 0.06, B 0.004, S 0.006, P 0.010, the balance is iron and unavoidable of impurities. The surface of the welding wire is plated with copper after drawing, and the copper content of the welding wire is 0.12%.

[0030] Using the above Ф1.2mm welding wire, use mixed gas (80% Ar+20% CO 2 ) protection, on the Q345 steel plate to carry out the mechanical property test of the deposited metal, and at the same time use the mixed gas (80% Ar + 20% CO 2 ) to protect the surfacing welding isolation layer on the groove and backing plate. The thickness of the surfacing welding isolation layer is grea...

Embodiment 2

[0033] A 90-ton electric furnace is used to smelt welding wire steel with low S and P billets. The steel for welding wire is refined and rolled into steel wire rod for welding. After wire drawing, copper plating and winding processes, it is made into a welding wire of Ф1.2mm. . The chemical composition of the wire is by weight percentage: C 0.076, Si 0.66, Mn 1.65, Ni 1.35, Mo 0.33, Cr 0.26, Ti 0.08, B 0.003, S 0.004, P 0.013, the balance is iron and unavoidable Impurities. Copper is plated on the surface after being drawn to make welding wire, and the copper content of the welding wire is 0.10%.

[0034] Using the above Ф1.2mm welding wire, use mixed gas (80% Ar+20% CO 2 ) protection, at the same time use the mixed gas (80% Ar + 20% CO 2) to protect the surfacing welding isolation layer on the groove and backing plate. The thickness of the surfacing welding isolation layer is greater than or equal to 3.0mm after processing. The mechanical performance test of the deposited ...

Embodiment 3

[0037] A 90-ton electric furnace is used to smelt welding wire steel with low S and P billets. The steel for welding wire is refined and rolled into steel wire rod for welding. After wire drawing, copper plating and winding processes, it is made into a welding wire of Ф1.2mm. . The chemical composition of the welding wire is by weight percentage: C 0.062, Si 0.44, Mn 1.32, Ni 1.02, Mo 0.26, Cr 0.19, Ti 0.06, B 0.002, S 0.006, P 0.015, the balance is iron and unavoidable Impurities. The surface of the wire is plated with copper after drawing to make the wire, and the copper content of the wire is 0.09%.

[0038] Using the above Ф1.2mm welding wire, use mixed gas (80% Ar+20% CO 2 ) protection, on the Q345 steel plate to carry out the mechanical property test of the deposited metal, and at the same time use the mixed gas (80% Ar + 20% CO 2 ) to protect the surfacing welding isolation layer on the groove and backing plate. The thickness of the surfacing welding isolation layer ...

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Abstract

The invention relates to a high-toughness low-alloy solid welding wire which comprises the following chemical components in percentage by weight: not more than 0.10 percent of C, 0.4 to 0.8 percent of Si, 1.2 to 1.9 percent of Mn, 1.0 to 2.5 percent of Ni, 0.25 to 0.55 percent of Mo, 0.18 to 0.35 percent of Cr, 0.05 to 0.20 percent of Ti, 0.0005 to 0.005 percent of B, not more than 0.015 percent of S, not more than 0.015 percent of P and the balance of Fe and other inevitable impurities. The high-toughness low-alloy solid welding wire has the tensile strength of deposited metal more than 830MPa, the yield strength of the deposited metal more than 730MPa, and the reduced alloy content by near 50 percent compared with the welding wire ER83-1 on the premises of ensuring the strength and the impact toughness, can satisfy the welding of 830MPa-grade and 900MPa-grade steel plates and greatly reduce the cost and is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to a gas-shielded welding wire for metal material welding, in particular to a high-toughness low-alloy solid-core welding wire for welding high-strength structural steel plates. Background technique [0002] At present, the gas shielded welding wire used for welding high-strength structural steel plates (830MPa, 900MPa grade) in China is single, which is far from meeting the growing demand for gas shielded welding of high-strength structural steel plates. Low-matching Mn-Si series welding wire ER83-1 is generally used in China for welding high-strength structural steel plates, but its cost is high and it is not suitable for large-scale promotion. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-toughness low-alloy solid-core welding wire, the tensile strength of the deposited metal is greater than 830MPa, and the yield strength is greater than 730Mpa, which can m...

Claims

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Application Information

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IPC IPC(8): B23K35/30
Inventor 戴敦乐
Owner YICHANG MONKEY KING WELDING WIRE
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