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Low-yield-ratio, anti-seismic, high-toughness and corrosion-resistant gas shielded welding wire for building structure and application thereof

A technology of gas-shielded welding wire and low yield ratio, applied in welding equipment, welding medium, welding/cutting medium/material, etc., to achieve the effect of ensuring atmospheric corrosion resistance, improving low-temperature impact toughness, and good comprehensive mechanical properties

Pending Publication Date: 2021-12-24
HARBIN WELL WELDING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no corresponding gas shielded welding wire that can meet the demand

Method used

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  • Low-yield-ratio, anti-seismic, high-toughness and corrosion-resistant gas shielded welding wire for building structure and application thereof
  • Low-yield-ratio, anti-seismic, high-toughness and corrosion-resistant gas shielded welding wire for building structure and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The composition and mass percentage (Wt.%) of the welding wire in this embodiment are: C 0.092, Si 0.42, Mn 1.80, S0.0017, P 0.0049, Ni 1.85, Mo 0.40, Cu 0.45, Co 0.21, Ti 0.030, O 0.0092 , the balance being Fe and other unavoidable impurities.

[0031] The welding wire is smelted in a 0.5t electric furnace, and processed into a welding wire with a diameter of Φ1.2mm after forging, drawing and copper plating.

[0032] The gas shielded welding welding test of the welding wire obtained in this embodiment adopts 80% Ar+20% CO 2 For protection, the welding process parameters are as follows:

[0033] Table 1 welding process parameters

[0034]

[0035] See Table 2 for the tensile properties, yield ratio, impact toughness and atmospheric corrosion resistance of the welding wire of this embodiment.

Embodiment 2

[0037] The difference between this embodiment and Example 1 is: the composition and mass percentage (Wt.%) of the welding wire in this embodiment are: C 0.084, Si 0.51, Mn 1.90, S 0.0020, P 0.0061, Ni 2.30, Mo 0.51, Cu 0.48, Co0.23, Ti 0.034, O 0.0089, the balance is Fe and other unavoidable impurities. The welding wire preparation and welding test methods are the same as in Example 1. The tensile properties, yield ratio, impact toughness, and atmospheric corrosion resistance of the welding wire in this example are shown in Table 2.

Embodiment 3

[0039]The difference between this embodiment and embodiment 1 is: the composition and mass percentage (Wt.%) of the welding wire in this embodiment are: C 0.086, Si 0.50, Mn 1.68, S 0.0042, P 0.0045, Ni 2.39, Mo 0.41, Cu 0.35, Co0.24, Ti 0.049, O 0.0099, the balance is Fe and other unavoidable impurities. The welding wire preparation and welding test methods are the same as in Example 1. The tensile properties, yield ratio, impact toughness, and atmospheric corrosion resistance of the welding wire in this example are shown in Table 2.

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Abstract

The invention discloses a low-yield-ratio, anti-seismic, high-toughness and corrosion-resistant gas shielded welding wire for a building structure and an application thereof, and belongs to the technical field of preparation of welding materials for building structures. The welding wire comprises the following chemical components in percentage by mass: 0.06-0.12% of C, 0.30-0.55% of Si, 1.50-2.00% of Mn, less than or equal to 0.010% of S, less than or equal to 0.010% of P, 1.60-2.50% of Ni, 0.30-0.65% of Mo, 0.30-0.50% of Cu, 0.1-0.5% of Co, 0.06-0.10% of Ti, less than or equal to 0.01% of O and the balance of Fe. According to the welding wire, the deposited metal yield strength is larger than or equal to 690 MPa, the tensile strength is larger than or equal to 830 MPa, the impact energy Akv at the temperature of-40 DEG C reaches 100 J or above, the anti-seismic yield ratio is smaller than or equal to 0.90, the good comprehensive mechanical property is achieved, and the atmospheric corrosion resistance can also be guaranteed.

Description

technical field [0001] The invention relates to a low-yield-ratio earthquake-resistant high-toughness corrosion-resistant gas-shielded welding wire for building structures and an application thereof, belonging to the technical field of preparation of welding materials for building structures. Background technique [0002] In order to meet the requirements of high weather resistance, high strength, high toughness and a yield strength level above 690MPa in the fields of construction machinery, construction and sea-crossing bridges, steel mills have developed Q690 weather-resistant steel with high strength, toughness, high corrosion resistance, and earthquake resistance with a yield strength of 690MPa or more. Subsequently, higher requirements are put forward for the performance of the welded joint. The welded joint must have the strength, toughness and weather resistance equivalent to the base material, and the tensile strength must reach the requirement of strength above 830M...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/32B23K35/40
CPCB23K35/3026B23K35/3033B23K35/302B23K35/3046B23K35/325B23K35/40
Inventor 冯伟陈振业魏涛陈波吝章国张庆素胡晓波齐建军邹力维潘进许可贵吉荣亮刘满雨王纯
Owner HARBIN WELL WELDING CO LTD
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