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Iron-based abrasion resistant overlaying-welding flux-cored wire

A technology of welding wire and flux, applied in the field of iron-based wear-resistant surfacing flux-cored welding wire, can solve the problems of high cost, mismatch of hardness and toughness, etc., and achieve the effects of low cost, excellent wear resistance, and low crack sensitivity

Inactive Publication Date: 2010-03-17
王新虎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of mismatching hardness and toughness and high cost of surfacing wear-resistant alloys for low impact and strong abrasive wear conditions. An iron-based wear-resistant surfacing flux-cored welding wire made of grinding alloy material. The surfacing alloy has low cost, high hardness, good toughness, low crack sensitivity and excellent wear resistance.

Method used

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Experimental program
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Effect test

Embodiment 1

[0037] An iron-based wear-resistant surfacing flux-cored wire, the composition of which is: carbon C 0.9%, boron B 2.5%, titanium Ti 2.0%, vanadium V 1.0%, silicon Si 1.0%, manganese Mn 1.2%, rare earth 0.05%, chromium Cr 1.3%, molybdenum Mo 0.3%, and the balance is iron.

[0038] The outer sheath of the welding wire is made of H08A thin steel strip specially used for welding wire. The thin steel strip has a width of 16mm and a thickness of 0.3mm, and its composition is 0.08%C, 0.4%Mn, 0.10%Cr, and 0.15%Ni. The flux core can be mixed with special alloy powder for welding wire, and the filling factor is 35%. Cerium compound powder, chromium ferroalloy powder, molybdenum ferroalloy powder, etc., these alloy powders are fully mixed evenly, and the amount of each alloy powder is calculated according to formula (1) and formula (2). No slagging agent is added.

[0039] The main method of producing flux-cored welding wire in my country-steel strip method is used to produce welding ...

Embodiment 2

[0042] An iron-based wear-resistant surfacing flux-cored wire, the composition of which is: carbon C 0.3%, boron B 6.5%, titanium Ti 0.5%, vanadium V 1.5%, silicon Si 1.0%, manganese Mn 1.2%, rare earth 0.04%, Chromium Cr 1.0%, molybdenum Mo 0.3%, and the balance being iron.

[0043] The welding wire sheath is made of special H08A thin steel strip for welding wire. The thin steel strip has a width of 16mm and a thickness of 0.3mm. The flux core can be mixed with special alloy powder for welding wire, and the filling factor is 35%. Cerium compound powder, chromium ferroalloy powder, molybdenum ferroalloy powder, etc., these alloy powders are fully mixed evenly, and the amount of each alloy powder is calculated according to formula (1) and formula (2). No slagging agent is added.

[0044] 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 the thin steel strip into U shape, add flux cor...

Embodiment 3

[0047] An iron-based wear-resistant surfacing flux-cored wire, the composition of which is: carbon C 0.65%, boron B 4.0%, titanium Ti 3.5%, vanadium V 0.5%, silicon Si 0.6%, manganese Mn 1.2%, rare earth 0.02%, chromium Cr 1.0%, molybdenum Mo 0.8%, balance iron.

[0048] The welding wire sheath is made of special H08A thin steel strip for welding wire. The thin steel strip has a width of 16mm and a thickness of 0.3mm. The flux core can be mixed with special alloy powder for welding wire, and the filling factor is 35%. Cerium compound powder, chromium ferroalloy powder, molybdenum ferroalloy powder, etc., these alloy powders are fully mixed evenly, and the amount of each alloy powder is calculated according to formula (1) and formula (2). No slagging agent is added.

[0049] 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 the thin steel strip into U shape, add flux core powder, sea...

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Abstract

The invention relates to an iron-based abrasion resistant overlaying-welding flux-cored wire. The current abrasion resistant overlaying-welding wire and alloy are varied, the abrasion resistance of some alloy is favorable but some alloy has large brittleness and lower toughness and is not suitable for the abrasion working condition of an abrasive material with low impact. The iron-based abrasion resistant overlaying-welding flux-cored wire comprises the following alloy elements in percentage by weight: 0.3-1.0 percent of carbon (C), 1.0-7.0 percent of boron (B), 0.2-4.0 percent of titanium (Ti), 0.2-3.0 percent of vanadium (V), 0.1-1.5 percent of silicon (Si), 0.2-2.0 percent of manganese (Mn), 0.00-0.10 percent of rare earth (RE), 0-3.0 percent of chromium (Cr), 0-1.0 percent of molybdenum (Mo), 0-1.0 percent of wolframium (W), 0-2.0 percent of nickel (Ni), 0-0.5 percent of niobium (Nb) and 0-0.5 percent of zirconium (Zr). The invention carries out single-layer overlaying welding on the surface of a steel workpiece to form an abrasion resistant layer with the thickness of 1-3 mm or so, and the abrasion resistant layer has excellent abrasion resistance and toughness, difficult cracking and low cost and can reduce the abrasion of a mechanical fitting or a tool under the working conditions of low impact and strong abrasion of abrasive particles.

Description

technical field [0001] The invention belongs to the fields of machinery, iron and steel materials, etc., and specifically relates to an iron-based wear-resistant surfacing flux-cored welding wire 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 working condition contains a lot of precious metals such as Nb, W, Cr, Ni, etc., and the cost is relatively high. For example, the Chinese patent wear-resistant surfacing alloy material (application number 200510043305.1) relates to a wear-resistant surfacing alloy material, and its alloy specific composition content (weight %) is: W 5-30, Nb 2-15, V 3-12, Mo 1-8, Cr 1-5, B 2-7, rare eart...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
Inventor 王新虎
Owner 王新虎
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