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A kind of cobalt-chromium-molybdenum-tungsten-silicon alloy rod and preparation method thereof

An alloy bar, cobalt-chromium-molybdenum technology, applied in the field of cobalt-chromium-molybdenum alloy, can solve problems such as imperfect research on cobalt-chromium porcelain alloy bars and poor bar performance.

Active Publication Date: 2021-11-30
广州湘龙高新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on cobalt-chromium ceramic alloy rods is not perfect, and the performance of the rods is poor in all aspects.

Method used

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  • A kind of cobalt-chromium-molybdenum-tungsten-silicon alloy rod and preparation method thereof
  • A kind of cobalt-chromium-molybdenum-tungsten-silicon alloy rod and preparation method thereof
  • A kind of cobalt-chromium-molybdenum-tungsten-silicon alloy rod and preparation method thereof

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preparation example Construction

[0038] The present invention also provides a method for preparing a cobalt-chromium-molybdenum-tungsten-silicon alloy rod, comprising the following steps:

[0039] (1) preparing cobalt-chromium-molybdenum-tungsten-silicon alloy powder;

[0040] (2) The powder obtained in step (1) is subjected to cold mold compression molding;

[0041] (3) The alloy rod is obtained after vacuum sintering.

[0042] The cobalt-chromium-molybdenum-tungsten-silicon alloy rod prepared by the preparation method provided in this example has a cylindrical appearance and a grain weight of 1-10g, preferably 2-8g, more preferably 4- 6g. Rods are suitable for dental restorative materials.

[0043] The preparation method of the cobalt-chromium-molybdenum-tungsten-silicon alloy rod provided in this example yields an alloy rod with better appearance, color and luster, and better performance.

[0044] In a preferred embodiment, the pressure of cold molding is 80-100 tons, and in a further preferred embodim...

Embodiment 1-3

[0077] Among the impurities in Table 1, the nickel content is <0.1%, the cadmium content is <0.02%, and the beryllium content is <0.02%. The preparation method of embodiment 1-3 is as follows:

[0078] 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. The cyclone separation device is used to separate the materials ...

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Abstract

The invention provides a cobalt-chromium-molybdenum-tungsten-silicon alloy bar, which comprises 60%-66% of cobalt; 20%-30% of chromium; 3%-7% of molybdenum; 3%-7% of tungsten; %-5%; iron<0.8%; carbon<0.8%, impurity<2%, wherein, the sum of the weight percentages of the above components is 100%, and the appearance of the alloy rod is cylindrical. Dental products prepared from the cobalt-chromium-molybdenum-tungsten-silicon alloy bar provided by the invention have better metal-ceramic bonding performance.

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 rod. Background technique [0002] Dental disease prevalence rate is all very high in countries in the world, and with regard to my country, the dental disease patient reaches as many as 800,000,000. Dental defect, dentition defect and missing dentition are common diseases in dental diseases, and dentures are usually used for restoration. Alloy materials have excellent mechanical properties such as strength, hardness, wear resistance, durability, and toughness. Especially after the lost-wax casting technology is introduced into the dental field, alloys have become the main restoration materials. At present, the most widely used alloys in my country are non-precious casting metals. Alloys, of which nickel-based casting alloys are mainly used for porcelain fusion restorations, denture brackets and crown b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/07C22C1/04B22F3/02B22F3/10
CPCB22F3/02B22F3/1007B22F2999/00C22C1/0433C22C19/07B22F2201/20
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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