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A kind of preparation method of cemented carbide saw blade

A technology of cemented carbide and saw blades, which is applied in the field of preparation of cemented carbide saw blades, can solve the problems of high price, low efficiency of hot pressing and sintering process, high production and raw material costs, and achieve low raw material costs and high bending strength , The effect of simplifying the process

Active Publication Date: 2022-04-01
江苏华昌工具制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the blank containing cemented carbide particles is usually prepared first by pressing, and then it is hot-pressed and sintered with the metal substrate through a special mold. This processing technology needs to be carried out step by step. The used Metal powder raw materials need to be specially designed and supplied, so the price is usually expensive, and the hot pressing and sintering process is inefficient, and the production and raw material costs are high

Method used

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  • A kind of preparation method of cemented carbide saw blade
  • A kind of preparation method of cemented carbide saw blade
  • A kind of preparation method of cemented carbide saw blade

Examples

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Embodiment 1

[0026] This embodiment relates to the preparation of a cemented carbide saw blade. 65Mn steel is used as the base of the saw blade. The base of the saw blade is circular with a diameter of 180mm and a thickness of 2mm. A shaft hole can be opened in the center of the base of the saw blade. The diameter of the shaft hole can be 22mm. In addition, the base of the saw blade can also be opened There are cooling holes etc. Prepare a graphite mold with an inner diameter of 185mm and a graphite gasket with a diameter of 180mm, and the thickness of the graphite gasket is 1mm. In the graphite mold, the above-mentioned 65Mn steel substrate 10 and graphite gaskets are stacked sequentially along the height direction to form a stacked structure, and a graphite cap is set on the stacked structure as a casting protection device, and the gap between the stacked structure and the graphite mold is filled. Tungsten alloy steel fragments. Before casting, the graphite mold is first heated to 900°...

Embodiment 2

[0028]This embodiment relates to the preparation of a cemented carbide saw blade. 65Mn steel is used as the base of the saw blade. The base of the saw blade is circular with a diameter of 180mm and a thickness of 2mm. A shaft hole can be opened in the center of the base of the saw blade. The diameter of the shaft hole can be 22mm. In addition, the base of the saw blade can also be opened There are cooling holes etc. Prepare a graphite mold with an inner diameter of 185mm and a graphite gasket with a diameter of 180mm, and the thickness of the graphite gasket is 1mm. In the graphite mold, the above-mentioned 65Mn steel substrate 10 and graphite gaskets are stacked sequentially along the height direction to form a stacked structure, and a graphite cap is set on the stacked structure as a casting protection device, and the gap between the stacked structure and the graphite mold is filled. Tungsten alloy steel fragments. Before casting, the graphite mold is first heated to 900°C...

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Abstract

The invention relates to a method for preparing a cemented carbide saw blade, which belongs to the technical field of hard tools. The preparation method of cemented carbide saw blade of the present invention comprises the following steps: (1) graphite mold is provided, and multi-layer metal saw blade substrate is stacked along height direction in graphite mold; Carbide particles are preset in the gap between the inner walls of the mold; (3) The cemented carbide particles are covered with molten metal binder to form a saw blade working layer. The preparation method of this embodiment simplifies the process flow, and the metal bond does not need to use special sintered powder, which is beneficial to reduce the cost of raw materials; the saw blade working layer formed by melting can ensure the metallurgical bond strength between the saw blade matrix.

Description

technical field [0001] The invention relates to the technical field of hard tools, more specifically, the invention relates to a method for preparing a hard alloy saw blade. Background technique [0002] Cemented carbide has high hardness, strength, wear resistance and corrosion resistance. It is known as "industrial teeth" and is widely used in the manufacture of cutting tools, knives and other cutting tools. In the prior art, the blank containing cemented carbide particles is usually prepared first by pressing, and then it is hot-pressed and sintered with the metal substrate through a special mold. This processing technology needs to be carried out step by step. The used Metal powder raw materials need to be specially designed and supplied, so the price is usually expensive, and the hot pressing sintering process is inefficient, and the production and raw material costs are high. Contents of the invention [0003] In order to solve the above-mentioned technical problems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/08B22D19/04C22C19/05C22C38/54C22C38/34C22C38/02
CPCB22D19/085B22D19/04C22C19/058C22C38/54C22C38/34C22C38/02
Inventor 蒋武峰徐国栋
Owner 江苏华昌工具制造有限公司
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