Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material

A cemented carbide and high-chromium alloy technology, used in metal processing equipment, manufacturing tools, casting and molding equipment, etc., can solve the problems of large residual stress, increased residual stress, limited use range, etc., to achieve small residual stress at the interface, The effect of small heat affected zone and large controllable range

Inactive Publication Date: 2012-03-21
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] Although some cemented carbide/iron-based composite products have been applied in industry and have achieved certain economic benefits, their scope of use is still limited due to the following problems
(1) Due to the great difference in the linear (expansion) coefficients of cemented carbide and iron-based alloys, a large residual stress will be generated at the interface. During the subsequent heat treatm

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  • Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material
  • Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material
  • Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material

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[0024] Taking the preparation of ZGM110 type (output: 5 ~ 8t / h, grinding disc diameter: 1100mm, rotating speed: 50r / min, power: 110KW) coal mill lining tile as an example, and in conjunction with the accompanying drawings, the present invention is further explained. : 5~8t / h, disc diameter: 1100mm, speed: 50r / min, power: 110KW.

[0025] A preparation method of cemented carbide / high chromium alloy-based wear-resistant composite material, comprising the following steps:

[0026] Step 1: Carbide waste is cut and processed into a composite material reinforcement of the required shape and size, and the cemented carbide of the YG8 grade is selected, and processed into a cemented carbide reinforcement with a size of Φ5mm×8mm through wire cutting, except Sand blasting after oiling, and finally cleaning,

[0027] Step 2, welding an iron nail to one end of the cemented carbide reinforcement treated in step 1, the welding adopts a vacuum brazing process, and the brazing material is sele...

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Abstract

The invention provides a preparation method of a hard alloy/high-chromium alloy-based wear-resistant composite material, which comprises the following steps: firstly manufacturing a hard alloy/enhancement body, welding an iron nail at one end of the hard alloy enhancement body, then plating a metal buffer layer on the surface of the hard alloy enhancement body welded with the iron nail, further manufacturing a wearable element model, further inserting the well prepared hard alloy into the wearable element model on the premise of enabling the iron nail to face towards outside, adopting the expendable pattern casting process to cast high-chromium alloy, taking out a cast after casting molding, cutting off the iron nail, using a diamond grinding wheel to polish the working surface to be smooth, and then performing heat treatment on a workpiece. The composite material is uniform in distribution of enhancement phase, large in controllable range of volume fraction, small in residual stress of an interface, small in heat-affected zone and good in combination, hard alloy of the composite material is positioned in the surface layer of the working surface of a wearable element, the thickness is 10-15mm, and the composite material can be used for manufacturing normal-temperature or high-temperature wear-resistant wearable elements in the fields of mines, building, metallurgy, electric power and the like.

Description

technical field [0001] The invention relates to the technical field of manufacture of wear-resistant composite materials, in particular to a method for preparing a hard alloy / high chromium alloy-based wear-resistant composite material. Background technique [0002] Cemented carbide has a series of excellent properties such as high hardness, wear resistance, heat resistance, and corrosion resistance, and is widely used in metal processing, mining and other fields. However, hard alloys are expensive to manufacture and brittle, so they are not suitable for impact Wear parts with high force. In addition, with the rapid development of my country's industry, the application scope and consumption of cemented carbide are also increasing year by year. Various scrapped cemented carbide tools such as drills, milling cutters, reamers, turning tools, etc. It also increases accordingly; due to the serious problems of high energy consumption, complex equipment, and environmental pollution ...

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Application Information

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IPC IPC(8): B22D19/16B22C9/04
Inventor 鲍崇高侯书增邢建东高义民
Owner XI AN JIAOTONG UNIV
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