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Microwave hot isostatic pressing sintering furnace for post-sintering of dental zirconia ceramics

A hot isostatic pressing sintering, zirconia ceramic technology, applied in furnaces, furnace types, lighting and heating equipment, etc., can solve the problems of difficult removal and poor reliability, and achieve simple materials, low maintenance costs, and increased density. Effect

Inactive Publication Date: 2017-03-22
NANNING YUEYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of these products is acceptable for crowns and posts, but for thinner implants or two-stage all-ceramic implants for anterior teeth, the reliability is poor, and it is difficult to remove them when they break

Method used

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  • Microwave hot isostatic pressing sintering furnace for post-sintering of dental zirconia ceramics
  • Microwave hot isostatic pressing sintering furnace for post-sintering of dental zirconia ceramics
  • Microwave hot isostatic pressing sintering furnace for post-sintering of dental zirconia ceramics

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, the microwave hot isostatic pressing sintering furnace of the present invention comprises a loam cake 1, a plug 2 and a furnace body 3, wherein the plug 2 is inserted above the furnace body 3, and the loam cake 1 fastens the furnace body 3 from above and closes the plug 2 Create top pressure.

[0024] Such as Figure 4 As shown, the top of the body of furnace 3 is provided with a high-pressure cylinder 19 made of silicon carbide, and the cylinder hole at the center of the top surface of the high-pressure cylinder 19 is a second-level stepped hole, wherein the upper-step hole is a plug hole 18, The lower step hole is the furnace 17, and the outer side of the high-pressure cylinder 19 is wrapped with a lower heat insulation layer 20 formed by winding quartz fibers. There is a cooling layer 23 constructed of water-cooled copper tubes. ...

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Abstract

The invention provides a microwave hot isostatic pressure sintering furnace for dental zirconia ceramic later sintering. The microwave hot isostatic pressure sintering furnace comprises an upper cover, a plug and a furnace body. A high-pressure cylinder body made of silicon carbide is arranged at the upper portion of the furnace body. The high-pressure cylinder body is wrapped by a lower insulating layer. An anti-explosion layer is arranged on the outer side of the lower insulating layer. A cooling layer is arranged on the outer side of the anti-explosion layer. A furnace outer shell is arranged on the outer side of the cooling layer. A microwave generator is arranged at the lower portion of the furnace body. The plug is a T-shaped plug. A body of the plug is made of silicon carbide, the plug cap portion of the body is wrapped by an upper insulating layer, and a high-pressure gas pipe and an optical pyrometer are arranged in the middle of the plug. The top face of the inner side of a cover body of the upper cover is connected with a disc-shaped pressure buckle. The microwave hot isostatic pressure sintering furnace can well improve bending strength and breaking tenacity of dental ceramic and improve safety of the dental ceramic. Materials used for the sintering furnace are simple, price is low, maintenance cost is low, mass production is easy, and the sintering furnace can be popularized to county-level professional dental departments.

Description

technical field [0001] The invention relates to a sintering device for dental zirconia ceramics, in particular to a microwave hot isostatic pressing sintering furnace for post-sintering of dental zirconia ceramics. Background technique [0002] Zirconia all-ceramic teeth have many advantages such as strong and wear-resistant, realistic appearance color, good biocompatibility, etc., and do not contain metal, have no irritation to the gums, will not cause gums to turn blue, and will not be allergic, so zirconia all-ceramic teeth Tooth restoration is a popular trend in international dental cosmetic restoration, and it is also a hot spot in the current international dental market. [0003] The current technological process of dental sintered zirconia ceramics is to first fully banbury the zirconia powder and additives, then compress them into blocks or rods by cold isostatic pressing 100MPa, then heat and degrease, pre-fire to 900-1000°C, and then use a computer to The CAD / CAM ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B17/02C04B35/48
Inventor 王玉元王粤凡
Owner NANNING YUEYANG TECH
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