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Sintering process of tape casting aluminum oxide sheet

A technology of tape casting and alumina, which is applied in the direction of improving process efficiency, can solve the problems of production efficiency decline and cost increase, and achieve the effects of reducing firing time, saving production cost and increasing production efficiency

Pending Publication Date: 2022-07-05
无锡市惠丰电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a sintering process of tape-cast alumina flakes, the purpose of which is to prevent the deformation of the tape-cast green body by controlling the sintering temperature curve and slowing down the heating rate in conventional sintering methods. , so the production efficiency is greatly reduced, and the cost is also a technical problem that increases with the long-term work of high-temperature equipment

Method used

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  • Sintering process of tape casting aluminum oxide sheet
  • Sintering process of tape casting aluminum oxide sheet
  • Sintering process of tape casting aluminum oxide sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The sintering process of the tape-casting alumina sheet provided by the present embodiment, the specific technical scheme is as follows:

[0025] Cut the tape-cast alumina body with a thickness of 0.15mm into square pieces of 80mm*80mm and place it on the alumina sheet to ensure that there are no dust particles on the surface of the board and the body, and then cover it with a layer of alumina sheet . The covered alumina body is dried, plastic-removed, strength-increased and sintered according to the following temperature setting requirements.

[0026] The specific temperature parameters are as follows:

[0027] Drying treatment: room temperature -80℃, keep warm for 1 hour; 80-160℃, keep warm for 2 hours; 160-200℃, keep warm for 3 hours; 200-240℃, keep warm for 5 hours; 240-260℃, keep warm for 6 hours; 260 ℃ naturally cooled to room temperature. The drying is divided into two stages. The first stage is room temperature -80°C, which is kept for 1 hour; 80-160°C, which...

Embodiment 2

[0033] The sintering process of the tape-casting alumina sheet provided by the present embodiment, the specific technical scheme is as follows:

[0034] Cut the aluminum oxide embryo body with a thickness of 0.15mm after tape casting into a square piece of 80mm*80mm and place it on the corundum mullite board to ensure that there are no dust particles on the surface of the board and the embryo body, and then cover it with a layer of corundum mullite. Come to slate. The covered alumina body is dried, plastic-removed, strength-increased and sintered according to the following temperature setting requirements.

[0035] The specific temperature parameters are as follows:

[0036] Drying treatment: room temperature -80℃, keep warm for 1 hour; 80-160℃, keep warm for 2 hours; 160-200℃, keep warm for 3 hours; 200-240℃, keep warm for 5 hours; 240-260℃, keep warm for 6 hours; 260 ℃ naturally cooled to room temperature. The drying is divided into two stages. The first stage is room tem...

Embodiment 3

[0042]The sintering process of the tape-casting alumina sheet provided by the present embodiment, the specific technical scheme is as follows:

[0043] Cut the aluminum oxide embryo body with a thickness of 0.15mm after tape casting into a square piece of 80mm*80mm and place it on the corundum mullite board to ensure that there are no dust particles on the surface of the board and the embryo body, and then cover it with a layer of corundum mullite. Come to slate. The covered alumina body is dried, plastic-removed, and sintered according to the following temperature setting requirements.

[0044] The specific temperature parameters are as follows:

[0045] Drying treatment: room temperature -80℃, keep warm for 1 hour; 80-160℃, keep warm for 2 hours; 160-200℃, keep warm for 3 hours; 200-240℃, keep warm for 5 hours; 240-260℃, keep warm for 6 hours; 260 ℃ naturally cooled to room temperature.

[0046] Plastic removal treatment: room temperature -260 °C, heating for 3 hours; 260...

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Abstract

The invention belongs to the technical field of plastic removal sintering of ceramic products, and particularly relates to a sintering process of a tape-casting aluminum oxide sheet. According to the sintering process of the tape-casting aluminum oxide sheet, the pressurizing plates are arranged on the two sides of the aluminum oxide blank body and generate certain pressure on the aluminum oxide blank body, so that the sintering process of the aluminum oxide blank body at a high heating rate is achieved, the surface of the sintered aluminum oxide sheet finished product does not deform or warp, and the service life of the aluminum oxide sheet finished product is prolonged. Therefore, the firing time of the tape casting blank is shortened, the production efficiency is improved, and the production cost is saved.

Description

technical field [0001] The invention belongs to the technical field of plastic-removing and sintering of ceramic products, and particularly relates to a sintering process of tape-casting alumina flakes. Background technique [0002] Tape casting, also known as belt casting, scraper method, is a molding method for ceramic products. First, the crushed powder and organic plasticizer solution are mixed in an appropriate ratio to form a slurry with a certain viscosity. The slurry flows down from the container and is coated on the special base tape with a certain thickness by the scraper. After drying and curing, the film is peeled off from the top to become the green belt, and then the green belt is punched according to the size and shape of the finished product. Cutting, lamination and other processing, to make the finished blank product to be sintered. Due to the large amount of organic additives in the tape casting process, the embryo body shrinks greatly in the process of pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/64C04B35/10C04B35/638
CPCC04B35/64C04B35/638C04B35/10C04B2235/606C04B2235/6567C04B2235/6562Y02P10/20
Inventor 田德辉王宝郑世远汪春权朱军吉
Owner 无锡市惠丰电子有限公司
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