Welding flux for electroslag surfacing

A technology of electroslag surfacing and flux, applied in arc welding equipment, welding medium, welding equipment, etc., can solve the problems of molten pool flow, inability to carry out surfacing welding of deposited metal thickness, etc., to prevent the deterioration of slag peeling. Effect
CN101229609AInactive Publication Date: 2008-07-30KOBE STEEL LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KOBE STEEL LTD
Publication Date
2008-07-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided is an electroslag welding flux for welding. With the use of a band electrode, the electroslag welding flux can make bead welding process with a 5mm or 6mm deposited metal thickness, different form the existing welding flux with a 4mm upper deposited metal thickness. The welding flux provided in the invention contains the following components, by weight, CaF2:35 to 50 %, SiO2: 15 to 20 % without 15% involved, Al2O3: 10 to 20%, CaO: no more than 10%, the sum of MgF2 and AlF3: 5 to 10%, MgO: 5 to 15%.
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Description

technical field

[0001] The present invention relates to a flux for electroslag overlay welding, and relates to a welding flux for electroslag overlay welding using a strip electrode. corrosion function. Background technique

[0002] Conventionally, Japanese Patent Publication No. 62-49155 discloses such a flux for electroslag overlay welding (hereinafter simply referred to as flux for overlay welding). This conventional surfacing flux is aimed at improving the slag detachability and sintering resistance during high-speed welding at a welding speed of 30 cm / min. The first surfacing flux contains: CaF 2 : 30 to 60% by weight, Al 2 o 3 : 10 to 30% by weight, SiO 2 : 5 to 15% by weight, CaO: 10% by weight or less, MgF 2 and / or AlF 3 The total of: 3 to 20% by weight, the total of MgO and / or BaO: 2 to 15% by weight, and satisfy (MgF 2 +AlF 3 ) / SiO 2 : The condition of 0.50 or more. In addition, the second flux for build-up welding contains, in addition to the flux compon...

Claims

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