Preparation method of a novel w‑mo‑cr alloy polishing disc

A polishing disc and alloy technology, which is applied in the preparation of alloy polishing disc materials and the preparation of high-hardness alloy materials, can solve the problems of uneven sintering, poor high-temperature oxidation resistance, incomplete solid solution of alloys, etc., and achieve low surface roughness , High-temperature oxidation resistance is good, and the effect of preparation is strong and repeatable

Active Publication Date: 2018-04-10
DALIAN UNIV OF TECH
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a preparation method for a new type of W-M-Cr alloy polishing disk for processing diamond products, and improve the incomplete solid solution and uneven sintering of the traditional tungsten-based polishing disk alloy , poor high temperature oxidation resistance and other deficiencies

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  • Preparation method of a novel w‑mo‑cr alloy polishing disc
  • Preparation method of a novel w‑mo‑cr alloy polishing disc
  • Preparation method of a novel w‑mo‑cr alloy polishing disc

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Embodiment Construction

[0021] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings. The present invention starts from the mechanism of transition metal catalyzed diamond graphitization, and combines the performance requirements of the polishing disc material for tribochemical polishing, invents a new type of W-Mo-Cr alloy polishing disc, and selects four kinds of W, Mo, Cr and Y The powder is used as the raw material for the preparation of the alloy polishing disk, and the new alloy polishing disk is made by ball milling with a high-energy ball mill and vacuum hot-pressing sintering. Specifically include the following steps:

[0022] 1) Determining the composition ratio of the alloy polishing disc: Four powders of W, Mo, Cr and Y are used, each powder has a purity of 99.9% and a particle size of 300 mesh. First, W, Mo, and Cr are weighed according to the molar ratio of 72%:27%:1%. Weigh 49.88g of tu...

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Abstract

The invention belongs to the technical field of powder metallurgy, and discloses a preparing method for a novel W-Mo-Cr alloy polishing disk. The preparing method comprises the following steps that powder W, powder Mo, powder Cr and powder Y are evenly mixed, and alloy polishing disk raw materials are obtained; secondly, a high-powered ball mill is utilized for conducting ball milling on a stainless steel ball and the alloy polishing disk raw materials, and alloy powder is obtained; thirdly, the alloy polishing disk is prepared through vacuum heat pressing and sintering; and fourthly, the alloy polishing disk is finished, the alloy polishing disk end face with the bright, clean and smooth surface is obtained, and the novel W-Mo-Cr alloy polishing disk is prepared. The preparing method has the beneficial effects that the novel W-Mo-Cr alloy polishing disk is excellent in sintering effect, high in structure density, uniform in component distribution, high in hardness and high in preparing repeatability.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy, and relates to the preparation of a high-hardness alloy material, in particular to a method for preparing an alloy polishing disc material used for processing and dressing diamond tools and diamond grinding wheels. Background technique [0002] Since diamond is the hardest substance in nature and has strong chemical inertness, it is recognized as one of the difficult-to-machine materials. However, it is precisely because diamond has unique physical and chemical properties that the tools it prepares play an irreplaceable role in the field of precision and ultra-precision machining. Tribochemical polishing is a new diamond polishing method that combines mechanical and chemical polishing. Due to its simple equipment, high processing efficiency and low process cost, it has great development prospects in the field of diamond product processing. The core content of tribochemical polishing te...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/14B22F3/24B22F5/00B22F9/04
CPCB22F3/14B22F3/24B22F5/00B22F9/04B22F2003/145B22F2003/247B22F2005/002B22F2009/041B22F2998/10
Inventor 金洙吉安润莉王春辉史双佶
Owner DALIAN UNIV OF TECH
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