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Vacuum Sintering Furnace Main Principles

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Vacuum Sintering Furnace Main Principles

Inläggav lay1014 » tor 13 jun 2019, 10:07

Vacuum Sintering Furnace Main Principles

Vacuum sintering furnace is a protective sintering furnace for heated articles in vacuum environment. There are many heating modes, such as resistance heating, induction heating, microwave heating and so on. Vacuum induction furnace is a kind of furnace which uses induction heating to protect the heated objects. It can be divided into power frequency, intermediate frequency, high frequency and other types, and can be classified as a subcategory of vacuum sintering furnace.

Vacuum induction sintering furnace is a complete set of equipment for sintering cemented carbide cutters and various metal powder compacts by using the principle of medium frequency induction heating under vacuum or protective atmosphere. It is designed for the industrial production of cemented carbide, dysprosium metal and ceramic materials.

I. Principles and Applications

Vacuum induction tungsten sintering furnace is under the protection of hydrogen gas after vacuum pumping. By using the principle of medium frequency induction heating, the tungsten crucible in the coil produces high temperature, which is transmitted to work by thermal radiation. It is suitable for powder forming and sintering of refractory alloys such as tungsten, molybdenum and their alloys by scientific research and military units. II. Main Structure and Composition

The structure forms are mostly vertical and discharging. Its main components are: electric furnace body, vacuum system, water cooling system, pneumatic system, hydraulic system, feeding and discharging mechanism, base, worktable, induction heating device (tungsten heater and advanced thermal insulation material), power supply device, medium frequency power supply and electrical control system, etc.

III. Main Functions

After vacuuming, hydrogen gas is filled to control the sintering state of pressure and atmosphere in the furnace. Optical fibre infrared radiation thermometer and armored thermocouple can be used to continuously measure temperature (0-2500 C). After comparing with the setting program, the intelligent temperature controller can choose to implement state feedback to medium frequency power supply, automatically control the temperature and heat preservation program.

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