Great line energy gas-electric vertical welding flux core wire and production method thereof

A gas-electric vertical welding and flux-cored wire technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of not meeting the welding effect of large and thick plates with large line energy and coarse metal structure, so as to meet the welding efficiency and The effect of deposited metal properties, improving impact toughness, maintaining continuity and stability

Active Publication Date: 2015-01-07
山东聚力焊接材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gas-electric vertical welding flux-cored wire is widely used in the welding of large medium and thick plates, while the traditional gas-electric vertical welding flux-cored wire will appear pores, cracks, slag inclusions, weld seams and heat-affected zones when welding under high current and voltage conditions Defects such as coarse metal structure cannot meet the high input energy welding effect of large thick plates

Method used

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  • Great line energy gas-electric vertical welding flux core wire and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0016] (1) Take 22kg of reduced iron powder, 18kg of manganese-silicon alloy, 0.4kg of rare earth silicon, 1kg of nickel powder, 1.5kg of sodium fluoride, 3kg of magnesia, 2kg of 45 ferrosilicon, 5kg of aluminum-magnesium powder, 1.8kg of ferromolybdenum, and boron 0.5kg of iron and 3kg of ferro-titanium, weighed separately, mixed, fully stirred, and dried to obtain formula powder for use;

[0017] (2) Steel strip slitting, then ultrasonic cleaning, drying, rolling U-shaped groove, adding the formula powder obtained in step (1) into the U-shaped groove, and then closing, reducing, drawing, and winding to obtain the Welding wire.

Embodiment 2

[0019] (1) Take reduced iron powder FHT100.25: 20kg, manganese silicon alloy FeMn64Si18: 21kg, rare earth silicon 0.1kg, nickel powder 2kg, sodium fluoride 1.3kg, magnesia sand 2kg, 45 silicon iron 2kg, aluminum magnesium powder 6kg, molybdenum Iron FeMo55: 2.3kg, boron iron 0.8kg, titanium iron FeTi30: 4kg, weighed separately, mixed, fully stirred, and dried to obtain formula powder for use;

[0020] (2) The steel strip is slit, then ultrasonically cleaned, dried, rolled into the U-shaped groove, and the formula powder obtained in step (1) is added to the U-shaped groove with a filling factor of 20±0.5%. Then, it is closed, reduced in diameter, polished, coated with metal compound for lubrication, drawn, and taken up to obtain the welding wire.

Embodiment 3

[0022] (1) Take reduced iron powder FHT100.25: 26kg, manganese silicon alloy FeMn64Si18: 15kg, rare earth silicon 0.5kg, nickel powder 0.45kg, sodium fluoride 2.6kg, magnesia sand 5kg, 45 silicon iron 3kg, aluminum magnesium powder 3kg, Ferro-molybdenum FeMo55: 1kg, ferro-boron 0.3kg, and ferro-titanium FeTi30: 1kg, weighed separately, mixed, fully stirred, and dried to obtain formula powder for use;

[0023] (2) The steel strip is slit, then ultrasonically cleaned, dried, rolled into the U-shaped groove, and the formula powder obtained in step (1) is added to the U-shaped groove with a filling factor of 20±0.5%. Then, it is closed, reduced in diameter, polished, coated with metal compound for lubrication, drawn, and taken up to obtain the welding wire.

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Abstract

The invention provides a great line energy gas-electric vertical welding flux core wire and a production method thereof. The great line energy gas-electric vertical welding flux core wire is mainly formed by reduced iron powder, manganese silicon alloy, rare earth silicon, nickel powder, fluoride, magnesia, 45 silicon iron, aluminum and magnesium powder, molybdenum iron, boron iron, titanium iron through production. The metal slag series formula is adopted, the aluminum and magnesium content is appropriately added into a flux core formula, and accordingly the deoxidization capability of the flux core is improved, the content of the iron oxide on the weld surface is reduced, the slag crunchy is increased, the weld deslagging effect is improved. A small amount of elements such as nickel, molybdenum, titanium and boron are added to the flux core and reasonable matching is performed, the proeutectoid ferrite is inhibited through the boron, and accordingly the impact toughness of deposited metal is effectively improved, meanwhile the continuity and the stability of an electric arc are maintained, the requirements of the welding efficiency and the deposited metal performance during thick plate welding are met, the weld metal slag is uniform in coverage, and the weld forming is good.

Description

Technical field [0001] The invention belongs to the technical field of welding, and relates to a gas-electric vertical welding welding material and a preparation method thereof. Background technique [0002] At present, my country has become a world-class steel production country. The scale of construction, transformation and expansion of my country's metallurgical blast furnaces has become larger and larger. The volume of blast furnaces has changed from a few hundred cubic meters in the past to several thousand cubic meters now, and the steel plates of the furnace body are also increasing. The thicker it is, it directly leads to an increase in welding workload. Moreover, the welding of large and thick ship plates is also time-consuming and labor-intensive. my country’s traditional metallurgical construction uses electrode arc welding or CO 2 Semi-automatic welding is very labor intensive, and it is far from meeting the requirements of construction schedule and construction quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/0266B23K35/30B23K35/3601B23K35/368B23K35/406
Inventor 孟波王瑞刚张丽生乔吉春
Owner 山东聚力焊接材料有限公司
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