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Preparation method for cobalt-chromium-molybdenum-tungsten-silicon alloy

A cobalt-chromium-molybdenum and tungsten-silicon technology, which is applied in the preparation of cobalt-chromium-molybdenum-tungsten-silicon alloys, can solve the problems of poor performance of 3D printing parts, lack of standardization and series of cobalt-chromium-molybdenum alloy powder particle size distribution, loose density, and fluidity. Standardization, affecting the promotion and application of dental medical field, etc.

Inactive Publication Date: 2021-05-18
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 method for cobalt-chromium-molybdenum-tungsten-silicon alloy

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preparation example Construction

[0026] refer to figure 1 , the embodiment of the present invention provides a method for preparing a cobalt-chromium-molybdenum-tungsten-silicon alloy, comprising the following steps:

[0027] (1) vacuumize the elements of the cobalt-chromium-molybdenum-tungsten-silicon alloy formula in a vacuum furnace, then heat up and melt to obtain a metal liquid;

[0028] (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;

[0029] (3) The material obtained after atomization enters the cooling tower for flight cooling;

[0030] (4) The cyclone separation device is used to separate the materials collected at the bottom of the cooling tower.

[0031] 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 ...

Embodiment 1-3

[0079] 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 a preparation method for a cobalt-chromium-molybdenum-tungsten-silicon alloy. The preparation method is characterized by comprising the following steps that (1) elements of a cobalt-chromium-molybdenum-tungsten-silicon alloy formula is vacuumized in a vacuum furnace, and then heating and melting are carried out to obtain a metal liquid; (2) the metal liquid is conveyed into a tight coupling type spraying disc to be crushed and atomized, and inert gas is introduced in the atomization process, wherein the flow of the inert gas is 2000-4000 cubic meters per hour; (3) an atomized material enters a cooling tower for flying cooling; and (4) the material collected at the bottom of the cooling tower is separated by adopting a cyclone separation device. A dental product prepared from alloy powder obtained through the preparation method for the cobalt-chromium-molybdenum-tungsten-silicon alloy is good in gold-porcelain bonding performance.

Description

technical field [0001] The invention belongs to the technical field of cobalt-chromium-molybdenum alloy preparation, and in particular relates to a preparation method of cobalt-chromium-molybdenum-tungsten-silicon alloy. 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 allo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08C22C19/07B22F5/00
CPCB22F5/00B22F9/082B22F2009/0824B22F2009/0848C22C19/07
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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