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Rutile flux-cored wire with tensile strength of 800 MPa grade and preparation method thereof

A technology of flux-cored welding wire and tensile strength, which is applied in welding equipment, metal processing equipment, welding medium, etc., can solve the problems of slow deposition speed of welding rod and can not meet the needs of users for all positions, and achieve the purpose of improving the performance of welding wire, Welding process performance and physical and chemical properties are good, and the effect of spatter is small

Active Publication Date: 2018-04-17
ATLANTIC CHINA WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There are already matching products for welding rods and solid welding wires. Due to the slow deposition speed of welding rods, solid welding wires are only used for flat welding and flat fillet welding, which cannot meet the needs of users for all positions, so the development of flux-cored welding wire is imminent.

Method used

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  • Rutile flux-cored wire with tensile strength of 800 MPa grade and preparation method thereof
  • Rutile flux-cored wire with tensile strength of 800 MPa grade and preparation method thereof
  • Rutile flux-cored wire with tensile strength of 800 MPa grade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A 14mm×0.8mm (width×thickness) steel strip is used as the sheath of the welding wire, and its chemical composition includes C0.035wt%, Mn 0.23wt%, Si 0.015wt%, S 0.006wt%, P 0.009wt%, and the balance is Iron and inevitable impurities.

[0046] The weight of the flux core accounts for 15wt% of the weight of the entire welding wire. The contents of the components in the flux core are: rutile: 30kg, silicate minerals: 4kg, magnesium powder: 6kg, fluoride: 1kg, titanium iron: 1kg, molybdenum iron: 6kg , Nickel powder: 12kg, electrolytic manganese: 11kg, 75 ferrosilicon: 5kg, wollastonite: 7kg, iron powder 16.2kg.

[0047] After mixing the components of the flux core evenly, put the outer sheath in the welding wire forming machine, pour the flux core mixture to be used into the groove of the outer sheath that is bent horizontally into a "U" shape, and then roll it into a wire. , After fine drawing to Φ1.2mm, the rutile-type flux-cored welding wire with tensile strength of 8...

Embodiment 2

[0049] A 14mm×0.8mm (width×thickness) steel strip is used as the outer skin of the welding wire, and its chemical composition is C0.035wt%, Mn0.23wt%, Si 0.015wt%, S 0.006wt%, P 0.009wt%, and the balance is Iron and inevitable impurities.

[0050] The weight of the flux core accounts for 15wt% of the weight of the entire welding wire. The contents of each component in the flux core are: rutile: 30kg, silicate minerals: 5kg, magnesium powder: 6kg, fluoride: 1kg, ferrotitanium: 1kg, ferromolybdenum: 6kg , nickel powder: 11kg, electrolytic manganese: 13kg, 75 ferrosilicon: 5kg, wollastonite: 7kg, iron powder 14.2kg.

[0051] After mixing the components of the flux core evenly, put the outer sheath in the welding wire forming machine, pour the flux core mixture to be used into the groove of the outer sheath that is bent horizontally into a "U" shape, and then roll it into a wire. , After fine drawing to Φ1.6mm, the rutile flux-cored welding wire with tensile strength of 800MPa is...

Embodiment 3

[0053] A 14mm×0.8mm (width×thickness) steel strip is used as the outer skin of the welding wire, and its chemical composition is C0.035wt%, Mn0.23wt%, Si 0.015wt%, S 0.006wt%, P 0.009wt%, and the balance is Iron and inevitable impurities.

[0054] The weight of the flux core accounts for 15wt% of the weight of the whole welding wire. The contents of each component in the flux core are: rutile: 30kg, silicate minerals: 6kg, magnesium powder: 6kg, fluoride: 1kg, ferrotitanium: 1kg, ferromolybdenum: 6kg , nickel powder: 10kg, electrolytic manganese: 15kg, 75 ferrosilicon: 5kg, wollastonite: 7kg, iron powder 12.2kg.

[0055] After mixing the components of the flux core evenly, put the outer sheath in the welding wire forming machine, pour the flux core mixture to be used into the groove of the outer sheath that is bent horizontally into a "U" shape, and then roll it into a wire. , After fine drawing to Φ2.0mm, the rutile flux-cored welding wire with tensile strength of 800MPa is ...

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Abstract

The invention discloses a rutile flux-cored wire with tensile strength of 800 MPa grade and a preparation method thereof. The flux-cored wire comprises a cover and a core; and the core comprises the following components: 20-40 weight parts of rutile, 2-10 weight parts of silicate minerals, 2-10 weight parts of magnesium powder, 0.2-4 weight parts of fluoride, 2-8 weight parts of titanium powder, 2-8 weight parts of molybdenum iron, 10-20 weight parts of nickel powder, 10-20 weight parts of electrolytic manganese, 2-8 weight parts of 75 silicon iron, 2-8 weight parts of wollastonite, and 12-17weight parts of iron powder. Compared with the prior art, the flux-cored wire is excellent in welding process performance and physical and chemical property, achieves such purposes as excellent welding process performance, stable arc, low splashing, beautiful molding of welding lines and capability of welding in all positions on process, and achieves the purpose of excellent mechanical performanceon performance.

Description

technical field [0001] The invention relates to the technical field of welding material preparation, and more particularly, to a rutile-type flux-cored welding wire with a tensile strength of 800 MPa and a preparation method thereof. Background technique [0002] With social development and scientific and technological progress, construction and mechanical equipment continue to develop into large-scale and lightweight, which requires higher and higher performance of steel. Traditional ordinary steel can not meet the needs of such industries. Therefore, the application of widely replacing ordinary steel with high-strength steel conforms to the development trend. [0003] The research and development of high-strength steel is one of the important research contents of the steel industry in various countries. In particular, several large foreign steel companies such as JFE, Nippon Steel & Sumitomo Metal, SSAB and other companies started early and achieved fruitful research in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/0266B23K35/3073B23K35/406
Inventor 郭栖利张晓柏蒋勇明廷泽张克静杨飞官忠波
Owner ATLANTIC CHINA WELDING CONSUMABLES
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