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High corrosion resistant surfacing electrode

A surfacing electrode, high corrosion resistance technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of limited application and high cost, and achieve excellent corrosion resistance, beautiful shape, and high temperature strength. Effect

Inactive Publication Date: 2018-08-21
张宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] From the perspective of corrosion resistance, stainless steel SUS304 and 310, and super stainless steel can be used as alternative materials, but the high cost directly limits their application

Method used

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  • High corrosion resistant surfacing electrode
  • High corrosion resistant surfacing electrode
  • High corrosion resistant surfacing electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0040] Electrode 4.0mm, vertical welding, current 100-130A, welding speed 2.0mm / s.

[0041] The chemical composition of the surfacing layer is shown in Table 1, the corrosion performance is shown in Table 2, and the process performance and mechanical properties are shown in Tables 3 and 4. Embodiment 4-6:

Embodiment 4-6

[0042] Welding rod 4.0mm, vertical welding, current 110-150A, welding speed 2.8mm / s.

[0043] The chemical composition of the surfacing layer is shown in Table 1, the corrosion performance is shown in Table 2, and the process performance and mechanical properties are shown in Tables 3 and 4. Comparative example 1-3:

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Abstract

The invention discloses a high corrosion resistant surfacing electrode. Chemical components of deposited metal in a surfacing layer are as follows, by weight: 0.01-0.08 of C, 0.3-1.5 of Si, 0.2-1.5 ofMn, no more than 0.02 of P, no more than 0.01 of S, 20-30 of Cr, 0.1-2.0 of Cu, and 0.05-0.5 of Sn, with the balance being iron and unavoidable impurities, wherein 24<=Cr+Cu+1.5*Si<=30. Welding wiresof the invention has excellent corrosion resistance performance and processing performance and is suitable for surfacing protection of a recovery system bearing high temperature and high pressure inpaper pulp industry, chemical industry and the like.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a high-corrosion-resistant electrode, in particular to a surfacing electrode suitable for the pulp chemical industry. Background technique [0002] The recovery boiler system in the pulp and chemical industry is not only subjected to high temperature and pressure, but also to the corrosion of chemical corrosion solution and steam. Therefore, surface treatment is often carried out on pipelines in important and critical parts to improve corrosion resistance and ensure safety while prolonging life. At present, the commonly used surfacing repair materials are mainly 12-18% Cr. [0003] In recent years, in order to improve the operating efficiency, the operating temperature and pressure of boilers have been continuously increased, which has also led to an increase in the corrosion rate of boiler tubes. According to reports, in the current operating environment, the corrosion rate of boi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/3086B23K35/0261
Inventor 张宇
Owner 张宇
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