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Continuous casting roll hardfacing flux-cored wire

A technology of continuous casting roll and welding wire, applied in the fields of machinery and iron and steel materials, can solve the problems of high chromium content, decreased wear resistance and high cost, and achieve the effects of low crack sensitivity, excellent wear resistance and low alloy cost.

Inactive Publication Date: 2010-10-06
NANTONG CHENXI WELDING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Some mechanical equipment that are subjected to abrasive wear under low impact, such as oil drilling tools, are currently mostly surfacing high-chromium cast alloys. This type of surfacing alloy has good wear resistance, but is brittle and easy to crack. There are cracks and it is easy to peel off , and contains a lot of chromium, the cost is higher
Therefore, sometimes oil drilling tools are also surfacing with high-chromium steel alloys. Although the toughness of the alloy is improved, the wear resistance is reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: A flux-cored welding wire for continuous casting roll wear-resistant surfacing, the composition of which is: 0.1% carbon, 0.5% vanadium, 0.7% silicon, 1.5% manganese, 5% chromium, and 3% molybdenum.

[0010] The outer sheath of the welding wire is made of H08A thin steel strip special for welding wire. The thin steel strip has a width of 16 mm and a thickness of 0.3 mm. The composition is 0.08% carbon, 0.4% manganese, 0.10% chromium, and 0.15% nickel. The flux core can be mixed with special alloy powder for welding wire. The filling factor is 25%. The powder is iron-carbon alloy powder, chromium oxide powder, ferro-vanadium alloy, ferro-manganese alloy powder, ferrosilicon alloy powder, ferro-molybdenum alloy powder, etc., and these alloy powders are fully mixed Serve evenly without adding slagging agent.

[0011] The main method of producing flux-cored welding wire in my country-steel strip method is used to produce welding wire. The process flow is: tie ...

Embodiment 2

[0013] Embodiment 2: A flux-cored wire for wear-resistant surfacing welding of continuous casting rolls, the composition of which is: 0.2% carbon, 0.3% vanadium, 0.3% silicon, 1.2% manganese, 8% chromium, and 1% molybdenum.

[0014] The outer sheath of the welding wire is made of H08A thin steel strip special for welding wire. The thin steel strip has a width of 16 mm and a thickness of 0.3 mm. The composition is 0.08% carbon, 0.4% manganese, 0.10% chromium, and 0.15% nickel. The flux core can be mixed with special alloy powder for welding wire. The filling factor is 25%. The powder is iron-carbon alloy powder, chromium oxide powder, ferro-vanadium alloy, ferro-manganese alloy powder, ferrosilicon alloy powder, ferro-molybdenum alloy powder, etc., and these alloy powders are fully mixed Serve evenly without adding slagging agent.

[0015] The main method of producing flux-cored welding wire in my country-steel strip method is used to produce welding wire. The process flow is: ...

Embodiment 3

[0017] Embodiment 3: A flux-cored wire for wear-resistant surfacing welding of continuous casting rolls, the composition of which is: 0.1% carbon, 0.1% vanadium, 0.5% silicon, 1.8% manganese, 3% chromium, and 0.2% molybdenum.

[0018] The outer sheath of the welding wire is made of H08A thin steel strip special for welding wire. The thin steel strip has a width of 16 mm and a thickness of 0.3 mm. The composition is 0.08% carbon, 0.4% manganese, 0.10% chromium, and 0.15% nickel. The flux core can be mixed with special alloy powder for welding wire. The filling factor is 25%. The powder is iron-carbon alloy powder, chromium oxide powder, ferro-vanadium alloy, ferro-manganese alloy powder, ferrosilicon alloy powder, ferro-molybdenum alloy powder, etc., and these alloy powders are fully mixed Serve evenly without adding slagging agent.

[0019] The main method of producing flux-cored welding wire in my country-steel strip method is used to produce welding wire. The process flow is...

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Abstract

The invention discloses a continuous casting roll hardfacing flux-cored wire, which comprises the following alloy elements by weight percent: 0.1-0.2% of carbon, 2-8% of chromium, 0.3-0.8% of silicon, 1-2% of manganese, 0.2-4% of molybdenum and 0.1-0.5% of vanadium. The continuous casting roll hardfacing flux-cored wire has the advantages of low cost, high hardness, good toughness, low carbon content, low crack sensitivity and favorable wear resistance.

Description

Technical field: [0001] The invention relates to the fields of machinery, steel materials and the like, in particular to a flux-cored welding wire for wear-resistant surfacing welding of continuous casting rolls for surfacing wear-resistant layers on the surface of steel tools. Background technique: [0002] There are many types of wear-resistant surfacing welding wires and alloys, some have good wear resistance, but some alloys are very brittle and have low toughness, so they are not suitable for abrasive wear conditions with low impact; some are suitable for abrasive wear with low impact The alloy of the condition contains a lot of precious metals such as Nb, W, Cr, Ni, etc., and the cost is relatively high. For example, the patented wear-resistant surfacing alloy material (application number 200510043305.1) relates to a wear-resistant surfacing alloy material, and the specific composition content of the alloy is W: 5-30%, Nb: 2-15%, V: 3-12%, Mo: 1-8%, Cr: 1-5%, B: 2-7%,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
Inventor 赵小龙
Owner NANTONG CHENXI WELDING