Ship-building steel small-groove submerged-arc welding agent and preparation method thereof

A technology for marine steel and grooves, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of lack of weld mechanical properties, insufficient flux slag removal, and high requirements for flux particles, and achieve good slag removal. Welding process performance and mechanical properties, good effect of welding quality
CN106736044AInactive Publication Date: 2017-05-31SHANGHAI HULIN HEAVY IND +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HULIN HEAVY IND
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a ship-building steel small-groove submerged-arc welding agent and a preparation method thereof. The ship-building steel small-groove submerged-arc welding agent comprises the following raw materials, by weight, of 15-28% of magnesite, 15-30% of white corundum, 10-25% of grammite, 10-20% of fluorite, 10-20% of rutile, 1-10% of manganese ores and 1-7% of silicon iron. The sum of the weight percentage of the components is 100%. The ship-building steel small-groove submerged-arc welding agent has low hygroscopicity; electric arc welding is stable; the slag detachability of the welding agent after welding is good; the appearance of a welded joint is attractive after forming; slag shells can automatic cock after welding; and no defects such as undercuts exist. The production efficiency is high, the comprehensive cost is low, the welding quality is good, and the welding agent is quite suitable for submerged arc welding under the condition of small grooves of ship-building steel.
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Description

technical field

[0001] The invention belongs to the technical field of welding materials, in particular to a small-groove submerged arc welding flux for marine steel and a preparation method thereof. Background technique

[0002] With the rapid development of my country's heavy industry, submerged arc automatic welding is widely used in industrial production due to its advantages of convenient operation, simple use, and no arc light. Therefore, the demand for sintering flux in my country is also increasing, and domestic The research and development of sintered flux focuses on the development of sintered flux for different welding materials and special welding environments. With the development of modern industry, the thickness of the plates used in the welding process is increasing, and most of the butt welding of thick plates must be grooved according to the specifications. Reducing the size of the bevel when welding thick plates can reduce the influence of welding heat inp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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