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Bright welding wire for heat-resistant steel for ultra-supercritical coal-fired power station

A coal-fired power station, ultra-supercritical technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of poor durability and high addition amount, and achieve the effect of improving welding manufacturability

Active Publication Date: 2018-11-20
BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the argon arc welding solid wire published in this patent still follows the principle of being consistent with the base metal. The addition of W, Mn, Nb, N and other elements is relatively high, the welding process of the solid wire, the toughness of the deposited metal, and the impact at room temperature Performance, anti-crack sensitivity, high temperature and long-term durability are poor

Method used

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  • Bright welding wire for heat-resistant steel for ultra-supercritical coal-fired power station
  • Bright welding wire for heat-resistant steel for ultra-supercritical coal-fired power station
  • Bright welding wire for heat-resistant steel for ultra-supercritical coal-fired power station

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Experimental program
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Effect test

Embodiment 1

[0026] A bright welding wire for ultra-supercritical coal-fired power station heat-resistant steel, including C, Cr, Co, Mn, W, Nb, Zr, Ni, B, Fe elements, strictly controlled O, N, Al, Si, Ti content and P, S and other unavoidable impurity elements, the weight percent of each component obtained by actual measurement is shown in Table 1. The finished welding wire was welded by non-melting inert gas tungsten shielded welding and the corresponding data were tested. The performance test results of the deposited metal are shown in Table 2.

Embodiment 2

[0028] A bright welding wire (BYH15) for ultra-supercritical coal-fired power station heat-resistant steel and its preparation method, including C, Cr, Co, Mn, W, Nb, Zr, Ni, B, Fe elements, strict control of O, N , Al, Si, Ti content and P, S and other unavoidable impurity elements, the weight percentage of each component obtained by actual measurement is shown in Table 1. The finished welding wire was welded by non-melting inert gas tungsten shielded welding and the corresponding data were tested. The performance test results of the deposited metal are shown in Table 2.

Embodiment 3

[0030] A bright welding wire (BYH15) for ultra-supercritical coal-fired power station heat-resistant steel and its preparation method, including C, Cr, Co, Mn, W, Nb, Zr, Ni, B, Fe elements, strict control of O, N , Al, Si, Ti content and P, S and other unavoidable impurity elements, the weight percentage of each component obtained by actual measurement is shown in Table 1. The finished welding wire was welded by non-melting inert gas tungsten shielded welding and the corresponding data were tested. The performance test results of the deposited metal are shown in Table 2.

[0031] Chemical composition wt.% of welding wire of table 1 embodiment

[0032]

[0033]

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Abstract

The invention discloses a bright welding wire for heat-resistant steel for an ultra-supercritical coal-fired power station and belongs to the technical field of welding materials. The welding wire comprises, by weight, 0.10-0.15% of C, 8.5-9.0% of Cr, 0.1-0.6% of Ni, 0.3-0.6% of Mn, 2.5-3.0% of Co, 2.0-2.7% of W, 0.020-0.035% of Nb, 0.001-0.010% of Zr, less than or equal to 0.006% of N, 0.16-0.20%of V, 0.003-0.010% of B, less than or equal to 0.20% of Si, less than or equal to 0.006% of P, less than or equal to 0.006% of S, less than or equal to 0.010% of O, less than or equal to 0.03% of Al,less than or equal to 0.01% of Ti and the balance Fe and inevitable impurity elements. The bright welding wire has the advantages that the welding wire has good welding process performance and excellent deposited metal flowability and formability, and the deposited metal after welding has excellent mechanical properties and good room temperature impact toughness.

Description

technical field [0001] The invention belongs to the technical field of welding materials, in particular to a bright welding wire for ultra-supercritical coal-fired power station heat-resistant steel. It is mainly used for welding heat-resistant steel G115 of 620℃~650℃ ultra-supercritical coal-fired power station or for welding G115 and other grades of heat-resistant steel. Background technique [0002] On the basis of large-scale successful construction of 600°C ultra-supercritical coal-fired power plants, China is developing and constructing ultra-supercritical coal-fired power plants with steam parameters of 600°C / 623°C / 623°C and 610°C / 630°C / 630°C. Further reduce coal consumption and improve thermal efficiency. The key factor restricting the construction of 630°C power station is the research and development of martensitic steel and its welding consumables in the temperature range of 620°C to 650°C. [0003] Patent ZL20121057444.5 "Steel for Ultra-supercritical Thermal P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/40
Inventor 王超李明扬章清泉李振瑞傅祖明刘海稳陈晓莉
Owner BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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