Intergranular corrosion resistant high-strength full austenite welding rod

A full austenitic, intergranular corrosion technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve problems such as intergranular corrosion of high-strength full austenitic electrodes

Inactive Publication Date: 2007-03-14
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of intergranular corrosion of high-strength fully austenitic welding rods, the purpose of the present invention is to provide a high-strength fully austenitic welding rod resistant to intergranular corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 2

[0019] In CaO-CaF 2 -SiO 2 1.4% rare earth fluoride is added to the high-strength austenitic electrode coating of type basic coating slag system and Cr-Ni-Mo-Mn-N type alloy system;

specific Embodiment approach 3

[0020] In CaO-CaF 2 -SiO 2 Add 2.0% rare earth fluoride to the coating of high-strength austenitic electrode of type basic coating slag system and Cr-Ni-Mo-Mn-N type alloy system.

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Abstract

The invention relates to an anti-inter-crystal-corrosion high-strength austenite welding bar. Wherein, it is formed by CaO-CaF2-SiO2 alkali coat slag and Cr-Ni-Mo-Mn-N alloy austenite coat, while its coat comprises marble at 45-55%, 45-55% at 16-25%, ferrotitanium at 8-12%, ferrosilicium at 1-5%, manganese metal at 2-8%, titanium dioxide at 1-6%, soda at 1-3% and fluoride rare earth at 0.5-2.0%; and the welding bar comprises C at 0.03-0.12%, Si at 0.2-0.7%, Mn at 2.0-7.0%, S and P<=0.030%, Cr at 15.0-19.5%, Ni at 20-25%, Mo at 4.0-7.0%, N at 0.15-0.25%, V at 0.15-0.3%, and the left is iron, then the mixed powder is coated on the welding core via soldium-water glass as adhesive.

Description

Technical field: [0001] The invention relates to the technical field of welding materials, and relates to an anti-intergranular corrosion high-strength full austenitic welding electrode. Background technique: [0002] At present, in the field of domestic welding electrode manufacturing and production technology, some production enterprises use the good effect of rare earth to add rare earth to the coating of the welding electrode to improve the structure of the welding seam, so as to obtain the various mechanical properties required. performance; but there is no example of using rare earth elements to improve the intergranular corrosion resistance of high-strength fully austenitic electrodes. [0003] In the patent description of application number 96115466 - a stainless steel anti-abrasion surfacing material with rare earth addition, after adding 0.05-0.40% rare earth to the original electrode, the inclusions are reduced and refined, and the surfacing metal structure is als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K35/30B23K35/40
Inventor 张田宏张俊旭杜义易传宝鲁晓声刘宏
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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