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Rare earth prealloyed powder and preparation method thereof

A technology of pre-alloyed powder and metal powder, applied in the field of rare-earth pre-alloyed powder and its preparation, can solve the problems of poor diamond holding force, poor quality stability, low degree of alloying, etc. Hard and good effect

Active Publication Date: 2013-08-28
JIANGSU FENGTAI TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problems of poor quality stability, low degree of alloying, poor holding force on diamond, and high sintering temperature in the prior art when the elemental element powder is prepared into the carcass, the purpose of the present invention is to provide a rare earth pre-alloyed powder and its Preparation

Method used

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  • Rare earth prealloyed powder and preparation method thereof
  • Rare earth prealloyed powder and preparation method thereof
  • Rare earth prealloyed powder and preparation method thereof

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Embodiment 1

[0037] The rare earth pre-alloyed powder described in this embodiment has the formula of basic constituent elements and their mass percentages: Cu36wt%, Sn5wt%, Ni7wt%, Co10wt%, Ce0.6wt%, and the balance is Fe. Theoretical density: 8.215g / cm 3 ;Sintering temperature 810℃; Density of sintered body: >99%; Bending strength of sintered body: >1100MPa; Hardness of sintered body: HRC28-30.

Embodiment 2

[0039] The rare earth pre-alloyed powder described in this embodiment has the formula of basic constituent elements and their mass percentages: Cu38wt%, Sn7wt%, Ni5wt%, Co8wt%, Ce0.8wt%, and the balance is Fe. Theoretical density: 8.179g / cm 3 ;Sintering temperature 780℃; Density of sintered body: >99%; Bending strength of sintered body: 1060MPa; Hardness of sintered body: HRC27-30.

Embodiment 3

[0041] The rare earth pre-alloyed powder described in this embodiment, its basic constituent elements and its mass percentage formula are: 40wt% Cu, 6wt% Sn, 8wt% Ni, 1.2wt% Ce, 4wt% Si, 8wt% of Co and the balance of Fe. Theoretical density: 8.152g / cm 3 ;Sintering temperature 770℃; Density of sintered body: >99%; Bending strength of sintered body: 1120MPa; Hardness of sintered body: HRC32-35.

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Abstract

The invention relates to rare earth prealloyed powder which is obtained by water atomization. The powder comprises the following components in percentage by weight: 36-45wt% of Cu, 5-8wt% of Sn, 5-8wt% of Ni, 0.5-1.5wt% of Ce, 8-12wt% of Co and 26-43wt% of Fe. According to the rare earth prealloyed powder provided by the invention, the sintering temperature is 740-800 DEG C, the bending strength is grater than 1000MPa, the utilization ratio of diamond reaches over 50%, the service life of the product is improved by over 30%, and the sharpness of the product is improved by over 20%. The rare earth prealloyed powder provided by the invention is wide in application range, and can be widely applied to granite cutting saw webs of various specifications.

Description

Technical field [0001] The invention involves the technical field of diamond cutting tools. More specifically, the invention involves a rare earth pre -alloy powder and its preparation methods. Background technique [0002] Vajrayana is the most well -known material in the material, so diamond cutting tools have become an indispensable material for processing various hard materials.The diamond cutting tool is mixed with metal powder and artificial diamond granules, which are suppressed and sintered.After more than 40 years of development, China's super -hard materials industry has made tremendous progress, rapid development, and continuous expansion of application fields. It has been widely used in many industries such as stone, construction, petroleum, electronics, and mechanical manufacturing.The future development prospects of super hard materials are becoming more and more broad.However, the development of my country's super -hard materials technology cannot meet the needs of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/04C22C1/04B22F9/08
Inventor 邱瑜铭董先龙
Owner JIANGSU FENGTAI TOOLS
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