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460MPa-level flux-cored wire for ocean engineering and application thereof

A technology of flux-cored welding wire and marine engineering, applied in welding media, manufacturing tools, welding equipment, etc., can solve the problems of unstable comprehensive performance and poor system matching ability, and achieve good operation technology at all positions, stable welding arc, and melting Good slag fluidity

Active Publication Date: 2016-01-27
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of poor matching ability and unstable comprehensive performance of the domestic high-strength steel welding material system in the existing marine engineering construction, the present invention provides a 460MPa-grade flux-cored welding wire for marine engineering, whose weld metal has stable mechanical properties and crack resistance Good performance, low content of diffusible hydrogen

Method used

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  • 460MPa-level flux-cored wire for ocean engineering and application thereof

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Embodiment 1

[0038] This embodiment provides a 460MPa grade flux-cored welding wire for marine engineering, including a carbon steel sheath and a flux core, the carbon steel sheath accounting for 87% of the total mass of the flux-cored welding wire, and the flux core accounting for 13% of the total mass of the flux-cored welding wire. The composition and content of the drug core account for the total mass percentage of the drug core as follows: rutile: 42%, sodium fluoride: 2%, feldspar: 6%, titanium iron: 5%, 75% #Ferrosilicon: 3%, Rare Earth: 1%, Magnesium Powder: 5%, Electrolytic Manganese: 10%, Aluminum Powder: 2%, Nickel Powder: 9%, Ferroboron: 7%, Graphite: 0.5%, 63-22 Silicon Manganese alloy: 6%, zircon sand: 1%, the balance is Fe and unavoidable impurities.

[0039] Among them, the carbon steel sheath adopts low S, P carbon steel strip, the chemical composition of the carbon steel strip is C: 0.048%, Si: 0.21%, Mn: 0.30%, S: 0.006%, P: 0.007% , and the balance is iron.

[0040] I...

Embodiment 2

[0049] This embodiment provides a 460MPa grade flux-cored welding wire for marine engineering, including a carbon steel sheath and a flux core, the carbon steel sheath accounting for 84% of the total mass of the flux-cored welding wire, and the flux core accounting for 16% of the total mass of the flux-cored welding wire. The composition and content of the drug core account for the total mass percentage of the drug core as follows: rutile: 30%, sodium fluoride: 1%, feldspar: 3%, titanium iron: 3%, 75% # Ferrosilicon: 1%, Rare Earth: 0.5%, Magnesium Powder: 3%, Electrolytic Manganese: 5%, Aluminum Powder: 1%, Nickel Powder: 7%, Ferroboron: 4%, Graphite: 0.2%, 63-22 Silicon Manganese alloy: 3%, zircon sand: 0.5%, the balance is Fe and unavoidable impurities.

[0050] Among them, the carbon steel sheath adopts low S, P carbon steel strip, the chemical composition of the carbon steel strip is C: 0.048%, Si: 0.21%, Mn: 0.30%, S: 0.006%, P: 0.007% , and the balance is iron.

[005...

Embodiment 3

[0059] This embodiment provides a 460MPa grade flux-cored welding wire for marine engineering, including a carbon steel sheath and a flux core, the carbon steel sheath accounting for 85% of the total mass of the flux-cored welding wire, and the flux core accounting for 15% of the total mass of the flux-cored welding wire. The composition and content of the drug core account for the total mass percentage of the drug core as follows: rutile: 36%, sodium fluoride: 1.5%, feldspar: 4.5%, titanium iron: 4%, 75% # Ferrosilicon: 2%, Rare Earth: 0.7%, Magnesium Powder: 4%, Electrolytic Manganese: 8%, Aluminum Powder: 1.5%, Nickel Powder: 8%, 1% Ferroboron: 5.5%, Graphite: 0.4%, 63- 22 Silicon manganese alloy: 4.5%, zircon sand: 0.7%, the balance is Fe and unavoidable impurities.

[0060] Among them, the carbon steel sheath adopts low S, P carbon steel strip, the chemical composition of the carbon steel strip is C: 0.048%, Si: 0.21%, Mn: 0.30%, S: 0.006%, P: 0.007% , and the balance is...

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Abstract

The invention provides a 460MPa-level flux-cored wire for ocean engineering. The 460MPa-level flux-cored wire comprises a carbon steel sheath and a flux core, wherein the carbon steel sheath accounts for 84-87% of the total mass of the flux core; the flux core accounts for 13-16% of the total mass of the flux-cored wire; the flux-cored wire consists of the following components in percentage by mass: 30-42% of rutile, 1-2% of sodium fluoride, 3-6% of feldspar, 3-5% of ferrotitanium, 1-3% of silicon iron, 0.5-1% of rear earth, 3-5% of magnesium powder, 5-10% of electrolytic manganese, 1-2% of aluminum powder, 7-9% of nickel powder, 4-7% of ferroboron, 0.2-0.5% of graphite, 3-6% of silicon-manganese alloy, 0.5-1% of zircon sand and the balance of Fe and inevitable impurities. By virtue of control in aspects of chemical components, diffusible hydrogen, low-temperature stability and the like, the 460MPa-level flux-cored wire meets the requirements of crack resistance and low-temperature impact resistance, is good in all-position welding process, attractive in welding seam and excellent in mechanical property, has seawater corrosion resistance; and content of diffusible hydrogen of deposited metal reaches ultralow hydrogen level.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a 460MPa-grade flux-cored welding wire for ocean engineering and its application. Background technique [0002] The working environment of the steel structure of marine engineering equipment is relatively harsh, and it has to withstand the damage of natural forces such as seawater corrosion and wave erosion. Therefore, the requirements for the weld part of the marine engineering structure are higher, and high requirements are put forward for the welding materials. [0003] At present, a large number of 355MPa-690MPa-grade steel and supporting welding materials are used in the construction of domestic offshore engineering platform equipment. Assure. [0004] However, due to the high technical requirements for steel and welding materials with a strength level of 460MPa-690MPa, stable performance products cannot be produced in China, mainly in terms of strengt...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/368B23K9/173
CPCB23K9/173B23K35/3053B23K35/368
Inventor 田海成刘玉双张少健杨宗全蔡俊韩海峰王文元张伟李振
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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