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A stainless steel electrode for underwater wet welding

A wet welding, stainless steel technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problem of inability to weld stainless steel materials underwater, and achieve beautiful weld appearance and good re-starting performance. , the effect of simple preparation process

Active Publication Date: 2015-09-16
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this electrode is not an underwater stainless steel electrode, and it cannot be welded with underwater stainless steel materials.

Method used

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  • A stainless steel electrode for underwater wet welding

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: adopt commercially available 304L stainless steel as the welding core, the composition and mass percentage of powder are: 42% rutile, 30% feldspar, 10% dolomite, 7% carboxymethyl cellulose, 5% manganese powder, silicon Iron 2% and nickel powder 4%, with potassium silicate as the binder of the drug skin, the addition is 34% of the total mass of the drug powder.

Embodiment 2

[0018] Embodiment two: adopt commercially available 304L stainless steel as the welding core, use potassium silicate as the binding agent of the drug skin, the composition and mass percentage of the drug powder are: 52% rutile, 25% feldspar, 5% dolomite, carboxymethyl Base cellulose 5%, manganese powder 9%, ferrosilicon 4% and nickel powder 0%, with potassium silicate as the binder of the drug skin, the addition is 32% of the total mass of the drug powder.

Embodiment 3

[0019] Embodiment three: adopt commercially available 304L stainless steel as the welding core, use potassium silicate as the binding agent of the coating, the composition and mass percentage of the medicinal powder are: 50% rutile, 20% feldspar, 7% dolomite, carboxymethyl 10% base cellulose, 7% manganese powder, 1% ferrosilicon and 5% nickel powder, with potassium silicate as the binder of the drug skin, the addition is 28% of the total mass of the drug powder.

[0020] The effect of the embodiment:

[0021]

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Abstract

The invention discloses a high-intensity stainless welding rod used for underwater wet welding. The stainless welding rod used for underwater wet welding comprises two parts including a covering and a core wire and is characterized in that the core wire is 304L stainless steel and the covering is composed by rutile, feldspar, dolomite, carboxymethyl cellulose, manganese powder, silicon iron and nickel powder. The covering comprises, by weight, 40%-52% of rutile, 20%-30% of feldspar, 5%-10% of dolomite, 5%-10% of carboxymethyl cellulose, 5%-9% of manganese powder, 1%-4% of silicon iron and 0%-5% of nickel powder. The high-performance rod used for underwater wet welding is simple in preparation procedure, simple in arc starting in welding, stable in electric arc combustion, good in arc restarting capacity, and beautiful in shape of a gained welding joint. The strength of extension of a butt joint can reach 530 Mpa. When the cold bend angle of the butt joint is 180 degrees, the butt joint is still in good condition and no fissures occur. The stainless welding rod used for underwater wet welding has the advantages of being simple and simple in process, convenient to test and operate, high in production efficiency and the like.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a high-performance stainless steel coated electrode for underwater wet welding with convenient operation. Background technique [0002] In recent years, the ocean has become the main field of competition for countries all over the world. The development of large oil and gas fields and coalbed methane, the construction of underwater workstations, the deployment and maintenance technology of submarine observation networks, the maintenance, disassembly and safety guarantee of offshore platforms all cover underwater welding. Technology, underwater welding technology and welding materials have become the bottleneck restricting the development of marine resources and maintenance of marine engineering. In terms of underwater welding technology, my country has initially realized dry underwater welding, but the more advanced underwater wet welding technology is far behind developed countr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/365
Inventor 郭宁刘多袁新冯吉才韩焱飞杨振林
Owner HARBIN INST OF TECH AT WEIHAI
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