WC particle-reinforced Ni-based MIG hardfacing flux-cored wire

A technology of particle reinforcement and welding wire, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve problems such as wear and tear, and achieve the effect of uniform surfacing layer, high welding quality, easy automation and mechanization
CN103406689AInactive Publication Date: 2013-11-27BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2013-11-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a WC particle-reinforced Ni-based MIG hardfacing flux-cored wire and belongs to surface-modified cored wires used in the technical field of engineering application. The flux-cored wire is composed of a nickel strap wrapper and core portion powder. Core ingredients comprise, by mass, 30%-75% of tungsten carbide, 4%-17% of silicon carbide, 3%-15% of boron carbide, 1%-5% of electrolytic manganese powder, 1%-12% of sodium fluoride and the balance of nickel powder. Ingredients of obtained deposited metal comprise 11.1%-30% of tungsten carbide, 1.3%-5.6% of silicon, 1%-5% of boron, 0.3%-1.48% of manganese and the balance of nickel. A surfacing layer prepared by flux-cored wires is high in hardness (>45HRC), and the hardness of WC hard phases in the surfacing layer reaches 1800HV0.3. According to the WC particle-reinforced Ni-based MIG hardfacing flux-cored wire, the 'shadow protection' effect is achieved mainly through matching of added WC particles and a Ni-based substrate, and therefore wear resistance can be achieved; besides, welding performance of surfacing alloy is improved by adding the deoxidizing agents including silicon and manganese, alterative Na / F and the like.
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Description

technical field

[0001] The invention relates to a WC particle-reinforced nickel-based MIG wear-resistant surfacing flux-cored welding wire, which belongs to the field of welding materials. It can be widely used in wear-resistant parts of machinery in mining, machinery, electric power and other industries. It can also be repaired by surfacing welding and manufacture new wear-resistant parts. The flux-cored welding wire of the invention is mainly used for picks in the coal industry. Background technique

[0002] According to statistics, 70% of the reasons for premature failure of mechanical equipment are due to wear and corrosion, and 1 / 3 to 1 / 2 of energy is consumed in friction and wear in each production process. In metallurgy, power generation, mining, building materials, coal and other industries, there are serious wear and tear problems of equipment in many working conditions, resulting in premature equipment damage, requiring shutdown for maintenance or replacement, aff...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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