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Wear-resistant material welding method

A wear-resistant layer and wear-resistant alloy technology, applied in the field of wear-resistant material welding, can solve problems such as wear-resistant layer falling off

Active Publication Date: 2022-06-24
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 examples, the WC cemented carbide particles were pretreated by freezing (reducing C precipitation), specifically, the tungsten carbide particles were pretreated by liquid nitrogen cooling before welding, specifically , using liquid nitrogen to pre-cool the tungsten carbide particles, by controlling the amount of liquid nitrogen, the temperature of the tungsten carbide particles is controlled between -20° to 0°, and 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 particles, so that under the action of high temperature, the solid-state migration and diffusion of carbon atoms on the surface of tungsten carbide particles can be effectively further curbed .

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Abstract

The invention discloses a wear-resistant material welding method, which is used to solve the problem in the prior art that a wear-resistant layer formed by welding single-component tungsten carbide on the surface of a blade of a steel base material is easy to fall off from the steel base material. The method includes step 1, cleaning the surface of the paddle; step 2, melting the nickel-based wear-resistant alloy on the surface of the paddle with a powder plasma arc cladding process and adding tungsten carbide hard alloy particles for overlay welding layer by layer, the tungsten carbide The cemented carbide particles are evenly embedded in the wear-resistant layer, and the material weight ratio of the tungsten carbide cemented carbide particles to the nickel-based wear-resistant alloy is 40-60%. The present invention applies (WC+Ni60) mixed wear-resistant material powder plasma arc surfacing process to the manufacture of paddles and other wear-resistant materials, so that the wear-resistant layer is impact-resistant, and the paddle can especially meet the use requirements of strong mixers .

Description

technical field [0001] The invention belongs to the technical field of wear-resistant material welding, in particular to a method for forming a wear-resistant layer with enhanced wear-resistant performance on the surface of a blade by means of material addition 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 parts of the blade 10 that are prone to wear, so as to improve the wear resistance of the blade. This is a common method in the industry. Refer to figure 1 and figure 2 . [0003] For example, Chinese patent CN201120502286.5 discloses a paddle for a high-speed mixing device, including a paddle body, one end of the paddle body is a free end, and the other end is connected to a paddle shaft, and the paddle shaft is provided with a paddle for connecting with the main shaft. At the connection end, the surface of the free end and the upper and lower sides of the bla...

Claims

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Application Information

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Patent Type & Authority Patents(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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