China Vacuum Furnace Hot Press Furnace Vacuum Hot Press Furnace

2300 degree High Vacuum Hot pressing sintering furnace (10T) for powder metallurgy and functional ceramics

2300ºC (10T) is composed by high vacuum hot-pressing sintering furnace, vacuum system, pressure system and electric control system. Furnace cover, furnace, and furnace bottom adopt double water cooling structure. The furnace shell surface temperature is less than 50ºC. Temperature is measured by thermal couple at low temperature and infrared instrument at high temperature. The vacuum system adopts two or three degree pumps. Molecular pumps can be added if required by customers.

Applications

Main Purpose:

Vacuum hot-pressing sintering furnace is a combination of vacuum/atmosphere, hot-pressing and high-temperature sintering, which is suitable for high-temperature hot-forming of new materials, like powder metallurgy and functional ceramics. It applies to the transparent ceramics, industrial ceramics and other metal and vacuum sintering of compound of refractory metal alloy material and silicon carbide and silicon nitride ceramic material of high temperature sintering, and can be used for heat treatment of powder or compact shape under the temperature below the melting point. The purpose is to improve its strength through the metallurgical bonding between the particles.

The vacuum hot-pressing furnace is mainly composed of furnace body, furnace door, heating and heat preservation and temperature measuring system, vacuum system, air charging system, water cooling system, control system, hydraulic system and so on.

1. Furnace body: double layer 304 stainless steel water-cooling structure, precision polishing, which is conducive to shorten the extraction time, and is easy to clean;

2. Furnace cover: double-layer water-cooled structure, with 304 inside and outside walls and precision polishing treatmentValve , and cooling water in the middle.

3. Heating, heat preservation and temperature measurement system: the heating system uses graphite cylindrical heater to not only guarantee the best temperature uniformity and the artifact of uniform heat, but facilitate the maintenance and replacement of heating elements. The heat insulation screen on the side and the bottom is made of a composite insulation layer composed of hard felt and soft felt, which is processed into an integral heat insulation system. The machine adopts Silicon controlled to control temperature , equipped with PID function instrument, digital display meter, with over temperature sound and light alarm function. It can also choose PLC touch panel to achieve automatically control, and retain historical data to be easy to analyze the sinter process.

4. Vacuum system: it is composed of oil diffusion pump, roots pump, mechanical pump equipped with electromagnetic differential pressure valve (to prevent sudden power failure and mechanical pump oil backward), filling valve, air release valve, vacuum butterfly valve, vacuum pressure gauge (Pa), corrugated pipe, vacuum pipeline and support, etc.

5. Inflation system: it is composed of various pipelines and valves, equipped with electromagnetic deflation valve and pressure sensor. It will automatically discharge gas When the pressure in the furnace is higher than the security value. Needle valve is installed on the gas tube, which can control the inflating volume, and is used to fill argon and nitrogen in the atmosphere required for sintering process.

Technical SpecificationsWorking chamber size160*160mm (Dia*Height)Furnace typeVertical type( also could be Horizontal type,optional)Temperature control
zoneOne zoneMax.temperature2400oCWorking temperatureSpecialized Case & Box 2200oC Pressure headHigh purity carbon graphite dia100mm (Bearing pressure not more than 63MPa)Max.travel distance100mm(Single-trackpressingfrom bottom)Accuracy of travelling ±0.05mmMax.pressure0--20T (Adjustablepressure by handle and automaticfreely,andthe fluctuationof pressure isless than 0.05MPa)Ultimate vacuum10-3pa Working vacuum10-2PaVacuum leakagerateLess than 0.67 Pa/hVacuum systemMonoblockvacuum pump, roots pump, 50 Pneumatic valve and bellowsElectric controlThe chain function of overheating, over pressure, low water pressure and over gas pressure can be achieved in all sorts of electric element. Temperature controlling50 steps Programmable auto-control.
Low temperature thermocouple is tungsten-rhenium thermocouple.
High temperature thermocouple is Infrared temperature instrument.The panel display andWeighing & Measuring Apparatus electric chainCurrent, voltage, temperature, vacuum, water pressure display, electric chain, different circuit branch recycle cooling water and sound-light alarming.Diamond Tools Heating elementCarbon graphiteInsulation materialCarbon graphite hard felt + graphite softfelt (The hard felt mainly used for refractory layer after 2600ºC treatment, and soft felt mainly used in insulation layer after 1800ºC treatment, both of them working together as the insulation materCleaning Swab ial)Filling gasProtective gas such as Argon, Nitrogen and other inert gas.Filling gas pressure≤0.05MPa (Micro-positive pressure, auto-adjustable outlet gas when over pressure)Furnace structureSideopen door, inner body layer is 304 stainless steel, outer layer is304 stainless steelWater cooling Water cooling chiller,15KWRated power50kWRated voltage380V 3P
Our factory have rich experience for vacuum furnace, can design furnace according to your need, If you have any requirments, plz feel free to contact with me.