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Wear-proof material welding method

A welding method and wear-resistant material technology, applied in welding equipment, plasma welding equipment, metal processing equipment, etc., can solve the problem of wear-resistant layer falling off

Active Publication Date: 2020-10-30
威海浩洋机械制造有限公司
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Problems solved by technology

[0015] In order to solve the deficiencies of the prior art, the present invention provides a wear-resistant material welding method and paddles, which are used to solve the problem that the wear-resistant layer formed by welding single-component tungsten carbide on the surface of the blade of the steel base material in the prior art is easy to self-destruct. The problem of shedding of the steel base material, and further improving the wear resistance and impact resistance of the wear-resistant layer in the new technology

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Embodiment 2

[0095] As a direction for further research and embodiments, WC cemented carbide particles are subjected to freezing (reducing C precipitation) pretreatment, specifically, before welding, liquid nitrogen cooling pretreatment is carried out to tungsten carbide cemented carbide particles, specifically , using liquid nitrogen to pre-cool tungsten carbide particles, by controlling the amount of liquid nitrogen to control the temperature of tungsten carbide particles between -20 ° to 0 °, through pre-cooling, the temperature of the particles is reduced to Reasonable level to offset the adverse effect of high temperature of powder plasma arc cladding process on tungsten carbide cemented carbide particles, so that under high temperature, the solid-state migration and diffusion of carbon atoms on the surface of tungsten carbide cemented carbide particles can be effectively further curbed .

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Abstract

The invention disclose a wear-proof material welding method. The wear-proof material welding method aims to solve the problem that in the prior art, a wear-proof layer formed by tungsten carbide of asingle ingredient is welded to the surface of a blade of a steel base material is prone to disengagement from the steel base material. The wear-proof material welding method comprises the steps that firstly, the surface of the blade is cleared; secondly, a nickel-based wear-proof alloy is molten on the surface of the blade with a powder plasma arc cladding technology, hard tungsten carbide alloy particles are added, and layer-by-layer surfacing is conducted, wherein the hard tungsten carbide alloy particles are evenly inlaid in the wear-proof layer, and the weight ratio between the hard tungsten carbide alloy particles and the nickel-based wear-proof alloy material is 40%-60%. The wear-proof material welding method applies the (WC+Ni60) mixed wear-proof material powder plasma arc surfacingtechnique to manufacturing of the blade and other wear-proof materials, so that the wear-proof layer is resistant to impact, and the blade especially can meet the use requirements of a power mixing machine.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant material welding, and in particular relates to a method for forming a wear-resistant layer with enhanced wear-resistant performance on the surface of a paddle by means of additive processing, and is a wear-resistant material welding method. Background technique [0002] A wear-resistant layer 00 is formed by welding and coating on the part of the blade 10 that is prone to wear to improve the wear resistance of the blade. This is a common method in the industry. Refer to figure 1 with figure 2 . [0003] For example, Chinese patent CN201120502286.5 discloses a paddle of high-speed mixing equipment, including a paddle body, one end of the paddle body is a free end, and the other end is connected to the paddle shaft. The connection end, the surface of the free end and the upper and lower sides of the blade body are surfacing with a tungsten carbide wear-resistant layer. When the blade rota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K10/02
CPCB23K10/027
Inventor 严仁昌肖维孙德涵
Owner 威海浩洋机械制造有限公司
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