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Preparation method of hard alloy saw web

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: 2021-02-23
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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  • Preparation method of hard alloy saw web
  • Preparation method of hard alloy saw web
  • Preparation method of hard alloy saw web

Examples

Experimental program
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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 preparation method of a hard alloy saw web, and belongs to the technical field of hard tools. The preparation method of the hard alloy saw web comprises the following stepsthat (1) a graphite mold is provided, and multiple layers of metal saw web base bodies are stacked in the graphite mold in the height direction; (2) hard alloy particles are pr-arranged in a gap between the edges of the metal saw web base bodies and the inner wall of the graphite mold; and (3) the hard alloy particles are covered with a molten metal bonding agent to form a saw web working layer. According to the preparation method in the embodiment, the technological process is simplified, special sintering powder does not need to be adopted for the metal bonding agent, and therefore the raw material cost can be reduced; and the metallurgical bonding strength between the saw web working layer and the saw web base bodies can be guaranteed through the saw web working layer formed through melting.

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 Applications(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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