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One-way hot-press high-temperature oscillation sintering furnace

A sintering furnace, one-way technology, applied in the field of sintering furnace, can solve problems such as unrealistic vibration amplitude/pressure, uneven product density, prone to failure, etc., to improve density and mechanical properties, improve and mechanical properties, The effect of reducing the cost of experiments

Inactive Publication Date: 2016-10-12
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently used hot-press sintering method uses a single pressure, which has defects such as long sintering time, high energy consumption, and uneven product density, which affects product performance.
If the current commonly used hot pressing sintering method is used to further increase the product density, the sintering temperature or sintering pressure must be increased, which will lead to more energy consumption and more serious environmental pollution
Although there are attempts to solve this problem through mechanical or hydraulic vibration, on the one hand, it cannot achieve high-frequency vibration amplitude / pressure, and on the other hand, it also makes the structure complex and prone to failure

Method used

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  • One-way hot-press high-temperature oscillation sintering furnace
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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with this embodiment, but the embodiments of the present invention are not limited thereto.

[0017] Such as figure 1 As shown in the embodiment, the experimental device includes a hot-pressed sintering furnace body 1 and an electromagnetic pressure device 4, the furnace body is connected with an air control system 2, a temperature control system 3 and a cooling water circulation system 6, and the entire experimental device is controlled by an electric control system 5 . The experimental device can control and display the temperature and pressure of the heating chamber in the furnace body through the temperature sensor 7 and the pressure sensor. The upper and lower pressure heads of the pressure system are made of high-strength graphite blocks, and the pressure on the pressure head is not less than 60MPa. The furnace body is a single-chamber clamshell type, with a front door, and is install...

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Abstract

The invention discloses a one-way hot-press high-temperature oscillation sintering furnace. An electromagnetic vibration pressurization device with vibration frequency and vibration amplitude / pressure adjustable in the hot-press process is provided while hot-press sintering is set on the top of a conventional furnace body. In the high-temperature sintering process, the magnitude and frequency of the sintering pressure are changed through a control system, the sintering pressure is repeatedly loaded and unloaded, and therefore vibration sintering is achieved. The sintering furnace promotes rearrangement of particles during vibration sintering and accelerates volume contraction, and the aim of rapid densification is achieved. The mechanical property of a sintered body can be remarkably improved.

Description

technical field [0001] The invention relates to a sintering furnace for preparing refractory ceramics and powder metallurgy materials by a hot-pressing sintering method, in particular to a vibration-type hot-pressing sintering furnace with unidirectional pressurization, adjustable frequency, and adjustable amplitude / voltage. technical background [0002] Due to the unique properties of high-performance ceramics and powder metallurgy materials that are obviously different from traditional materials: high strength, high hardness, corrosion resistance, etc., as well as important application values ​​in the fields of aerospace, rail transportation, and military industry, scientists from all over the world pay attention to It has attracted widespread attention. Among them, the hot pressing sintering method is an important and widely used method in the preparation of high-performance ceramics and powder metallurgy materials. The hot pressing sintering method refers to the combina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B21/00F27D7/06F27D9/00F27D19/00
CPCF27B21/00F27D7/06F27D9/00F27D19/00F27D2007/063F27D2009/0013F27D2019/0003F27D2099/0096
Inventor 刘金铃安立楠
Owner SOUTHWEST JIAOTONG UNIV