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A kind of nickel-chromium-based alloy for porcelain teeth and preparation method thereof

A nickel-chromium-based, porcelain-fused-to-dental technology, applied in dental preparations, dentistry, dental prostheses, etc., can solve the problems of easy breakage, performance degradation, and non-reusability, and achieve the effect of consistent appearance and color, and firm bonding

Active Publication Date: 2016-12-21
洛阳北苑新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of most nickel-chromium-based alloys are: 1) high strength and hardness, but poor toughness and easy fracture; 2) various properties are reduced after secondary melting, so they cannot be reused

Method used

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Embodiment Construction

[0010] Below in conjunction with embodiment this patent is further explained and illustrated. But the scope of protection of this patent is not limited to the specific implementation.

[0011] Dosing (mass %) according to the following chemical groups:

[0012] No. Nickel Chromium Molybdenum Tungsten Aluminum Niobium Titanium Silicon Cerium Boron

[0013] A 61.2 23 5 6 1 0.5 1 2 0.2 0.1

[0014] B 62.1 25 4 2 2 1 2 1 0.5 0.4

[0015] C 59.5 22 8 4 2 0.8 1.5 1.5 0.4 0.3

[0016] D 59.3 24 6 5 1.5 0.7 1.8 1.2 0.3 0.2

[0017] E 60.6 23.5 7 3 1.8 0.6 1.3 1.8 0.2 0.2

[0018] Put the ingredients of the above chemical components into a high-temperature crucible, and heat and melt in a vacuum intermediate frequency or high-frequency furnace; stir the high-temperature molten liquid for 5-10 seconds; cast the uniformly stirred molten liquid into a square mold of 10×10×10mm Or in a Ф10×10mm cylindrical mold, the ingot is formed after natural cooling; the ingot is sandblasted to r...

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Abstract

The present invention provides a nickel-chromium-based alloy for porcelain teeth and a preparation method thereof. The alloy includes by weight: 22-25%chromium, 4-8% of molybdenum, 2-6% tungsten, 1-2% of aluminum, 0.5-1% of niobium, 1-2% of titanium, 1-2% of silicon, 0.2-0.5% of cerium, 0.1-0.4% of boron, and the balance being nickel. The ingredients in accordance with the chemical compositions of the claim 1 are loaded into a high temperature ceramic crucible and heated to melt in a vacuum intermediate frequency or high frequency furnace. The high-temperature molten solution is stirred for 5-10 seconds. The uniformly stirred molten solution is cast into a square mold or cylindrical mold. An ingot is formed after natural cooling. The surface attachments of the ingot are removed by sandblasting. Lastly the ingot is polished to the nickel-chromium-based alloy for the porcelain teeth. The strength, hardness and toughness of the alloy are moderate, the performances are close to imported products, the glaze layer and the metal substrate are solidly combined after porcelain, and the appearance is consistent in color, lifelike, and perfect.

Description

technical field [0001] The invention relates to an alloy material technology, in particular to a nickel-chromium-based alloy used for ceramic teeth and a preparation method thereof. Background technique [0002] Nickel-chromium-based alloys are the main alloys used to make porcelain teeth, which can be used to cast crowns, brackets and other metal parts. The main problems of most nickel-chromium-based alloys are: 1) high strength and hardness, but poor toughness and easy fracture; 2) various properties are reduced after secondary melting, so they cannot be reused. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a nickel-chromium-based alloy for porcelain teeth and its preparation method, and provide a nickel-chromium-based alloy for making crowns and brackets of porcelain teeth with simple process and convenient operation. [0004] In order to achieve the purpose of solving the above technical problems, the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05A61K6/04
Inventor 李军孙学义雷复兴
Owner 洛阳北苑新材料技术有限公司