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A kind of high-strength corrosion-resistant and high-temperature resistant welding wire steel and its production method

A corrosion-resistant and high-temperature-resistant technology, which is applied in high-strength corrosion-resistant and high-temperature resistant welding wire steel and its production field, can solve the problems of steel properties not meeting the target requirements, achieve good promotion value, reduce production costs, good organization and performance Effect

Active Publication Date: 2021-03-16
BAOTOU IRON & STEEL GRP
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Problems solved by technology

Commonly used ordinary welding wire cannot be deposited tightly with corrosion-resistant and high-temperature-resistant steel, which may easily cause the performance of the steel to fail to meet the target requirements

Method used

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  • A kind of high-strength corrosion-resistant and high-temperature resistant welding wire steel and its production method
  • A kind of high-strength corrosion-resistant and high-temperature resistant welding wire steel and its production method
  • A kind of high-strength corrosion-resistant and high-temperature resistant welding wire steel and its production method

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Embodiment Construction

[0007] Aiming at the defects existing in the center of the prior art, the present invention selects Cr-Ni-Mo-Ti alloy system for design in the composition design, and improves the comprehensive mechanical properties of the welding wire through the comprehensive action of the alloy elements chromium, nickel, molybdenum and titanium, so that the welding wire and the base metal Better deposition together when welding. Since the fluctuation of the composition has a great influence on the drawing performance of the welding wire in the later stage, the chemical composition of the present invention is controlled by a narrow composition, which can ensure the passability and stability of the welding wire coil rod and improve the drawing performance of the welding wire. The welding wire has less spatter in the welding process, stable arc, beautiful weld shape and high deposition efficiency. Strictly limit the content of impurities such as S and P, suitable for Ar+CO 2 The mixed gas wel...

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Abstract

The invention discloses high-strength, corrosion-resistant and high-temperature-resistant welding wire steel and a production method thereof. The high-strength, corrosion-resistant and high-temperature-resistant welding wire steel comprises the following chemical components of, in percentage by mass, 0.06 %-0.12 % of C, 0.35 %-0.70 % of Si, 1.45 %-1.75 % of Mn, less than or equal to 0.020 % of P,less than or equal to 0.012 % of S, 0.12 %-0.24 % of Cr, 0.70 %-0.90 % of Ni, 0.20 %-0.56 % of Mo, 0.09 %-0.19 % of Ti, and the balance Fe and inevitable impurities. According to the provided weldingwire steel, the mechanical property meets the following conditions that the tensile strength is larger than or equal to 745 MPa, the elongation is larger than or equal to 32% and the percentage reduction of area is larger than or equal to 72%, the large-scale production can be achieved, and the good popularization value is achieved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a high-strength corrosion-resistant and high-temperature resistant welding wire steel and a production method thereof. Background technique [0002] With the rapid development of my country's national economy, steel materials are gradually developing from ordinary grades to high-strength and high-toughness directions; at the same time, the market demand for high-strength grade welding wire steel is also increasing. The supporting welding consumables for nuclear power, weather-resistant bridges, pressure vessels, railway vehicles and other steel products have been localized. Therefore, higher requirements are put forward for the strength and toughness of the welding wire, especially for the special properties of the welding wire such as corrosion resistance and high temperature resistance. Commonly used ordinary welding wire cannot be deposited tightly with corrosio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/50C22C38/58C22C33/04C21D8/06
CPCC21D8/065C21D2211/005C21D2211/009C22C33/04C22C38/002C22C38/02C22C38/04C22C38/44C22C38/50C22C38/58
Inventor 董捷赵桂英边影王嘉伟薛虎东郑瑞王慧军苏航
Owner BAOTOU IRON & STEEL GRP
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