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Cobalt-chromium-molybdenum-tungsten-silicon alloy powder

An alloy powder, cobalt-chromium-molybdenum technology, applied in the field of cobalt-chromium-molybdenum-tungsten-silicon alloy powder, can solve the problem of poor performance of 3D printing parts, lack of standardization and serialization of cobalt-chromium-molybdenum alloy powder particle size distribution, loose density and fluidity Issues such as standardizing and affecting the promotion and application of the dental medical field

Active Publication Date: 2021-05-14
广州湘龙高新材料科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The particle size distribution, bulk density, fluidity and other properties of traditional cobalt-chromium-molybdenum alloy powders lack standardization and serialization specifications, which makes the performance of 3D printing molded parts poor, which in turn affects the promotion and application in the field of dental medicine

Method used

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preparation example Construction

[0035] The present invention also provides a preparation method of cobalt-chromium-molybdenum-tungsten-silicon alloy powder, comprising the following steps:

[0036] (1) vacuumize the elements of the cobalt-chromium-molybdenum-tungsten-silicon alloy powder formula in a vacuum furnace, then heat up and melt to obtain a metal liquid;

[0037] (2) Transport the metal liquid into the tight-coupled spray plate for crushing and atomization, and feed inert gas during the atomization process, and the flow rate of the inert gas is 2000-4000 cubic meters per hour;

[0038] (3) The material obtained after atomization enters the cooling tower for flight cooling;

[0039] (4) The cyclone separation device is used to separate the materials collected at the bottom of the cooling tower.

[0040] In this embodiment, the effect of vacuum hypoxia is achieved through the step of vacuuming in a vacuum furnace. In a further preferred embodiment, the vacuuming is divided into two stages.

[0041]...

Embodiment 1-3

[0070] Dosing according to the formula in Table 1, feed 1000kg into the vacuum furnace, vacuumize with a pressure of 10Pa, and heat up and melt the vacuumized material in the melting furnace at a temperature of 1680°C to 1700°C to obtain a metal liquid. The metal liquid is passed into the close-coupled atomization spray plate device for crushing and atomization, and at the same time, an ultra-high-speed inert gas (nitrogen) is introduced into the close-coupled atomization spray plate. The flow rate of the ultra-high-speed inert gas is per 3000 cubic meters per hour. The atomized material is passed into the cooling tower for flight cooling. The tower diameter of the cooling tower is 1800mm and the tower height is 9000mm. A cyclone separation device is used to separate the materials collected at the bottom of the cooling tower to collect particles with smaller particle sizes, and then perform three-stage sieving particle size separation to obtain cobalt-chromium-molybdenum-tungs...

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Abstract

The invention provides cobalt-chromium-molybdenum-tungsten-silicon alloy powder. The cobalt-chromium-molybdenum-tungsten-silicon alloy powder comprises the following components in percentages by weight: 60%-66% of cobalt, 20%-30% of chromium, 3%-7% of molybdenum, 3%-7% of tungsten, 0.5%-5% of silicon, less than 0.8% of iron, less than 0.8% of carbon and less than 2% of impurities, wherein the sum of the weight percentages of all the components is 100%, and the average particle size of the cobalt-chromium-molybdenum-tungsten-silicon alloy powder is 10-55 microns. The metal-porcelain bonding performance of dental products prepared from the cobalt-chromium-molybdenum-tungsten-silicon alloy powder is good.

Description

technical field [0001] The invention belongs to the technical field of cobalt-chromium-molybdenum alloys, in particular to a cobalt-chromium-molybdenum-tungsten-silicon alloy powder. Background technique [0002] Caries and periodontal disease are the most common oral diseases. The Chinese population suffers from caries slightly higher, and the oral health situation is not optimistic. Therefore, it is of great significance to study the preparation of dental substitute products and provide better restorations for patients with dental diseases. social benefits. [0003] Cobalt-chromium-molybdenum-tungsten alloy has good biocompatibility, strong metal-ceramic bonding and corrosion resistance, and the price is relatively cheap. It is widely used in the field of oral restoration, because of its high cobalt content, its corrosion resistance is better than that of nickel The alloy is good, the comfort is high, and the discoloration of the alloy will not appear in the patient's mou...

Claims

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Application Information

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IPC IPC(8): C22C19/07B22F1/00B22F9/08B33Y70/00
CPCC22C19/07B22F9/082B33Y70/00B22F1/065
Inventor 蔡曾清蔡嘉龚卓妍
Owner 广州湘龙高新材料科技股份有限公司
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