제주장학재단

Installation   condition

1)   Water: equipment with self-circulating cooling water machine( filled with   pure water or deionized water)

2)   Electricity: AC380V 50Hz( 63A air switch), must have good grounding

3)   Gas: the equipment chamber needs to be filled with argon( purity of 99.99% or   more), you need to bring your own argon gas cylinder( with Ø6mm double   ferrule joint)

4)   Workbench: size 1500 mm × 600 mm × 700 mm, bearing more than 200 kg

Main   features

1)   Refractory brick made of high-purity alumina fiber resistant to 1800℃ is used to support the corundum crucible   and prevent heat radiation.

2)   With automatic water pressure, overheating alarm, high power protection   system.

3)   The temperature controller adopts the PID method to control the temperature,   and can set the 30-stage lifting and lowering temperature program, and has   the functions of overheating and breaking protection.

4)   Equipped with anti-corrosion type vacuum gauge, when the pressure is above 10   mbar, there is no need to change the coefficient of the gas type, the range can   be 3.8 × 10E-5 torr.

5)   Equipped with a double-rotating direct-connected mechanical pump.

Technical   Parameters

Middle   frequency induction heating furnace

1) Working   voltage: three-phase AC 380V 50Hz ( requires 60A air   switch)

2)   the maximum input power: 15 kW

3)   oscillation frequency: 30 kHz- 80 kHz

4)   the cycle ratio: 80%

5)   induction coil: outer diameter Ø120mm, inner diameter Ø110mm, height 50mm   (finely adjustable)

Temperature   Controller

1,   working voltage: AC208V-240V single phase

2,   temperature control accuracy: ± 5℃

3,   temperature: continuous working temperature is 1000℃-1700℃, the maximum working temperature is   1700℃ (working time <30 minutes)

As   shown in Figure 4, the maximum   heating rate: 1℃ /   sec (0-1000℃), 0.5℃ / sec (1200℃ -1700℃)

Corundum Crucible

Can support 100g Metal

Quartz   tube and sealing flange

1,   quartz tube: outer diameter Ø100mm, inner diameter Ø92mm, length 355 mm

2,   top flange: stainless steel flange, with stainless steel needle valve, with   an armored interface (can be inserted into the thermocouple to the inside of   the quartz tube to more accurately measure the sample temperature), also   have a 1/4 inches gas interface to inlet nitrogen or argon.

3,   bottom flange: stainless steel needle valve and KF25 interface (can be connected   to the vacuum pump through the bellows)

Water   chiller

1,   temperature: 5℃ -30℃

2,   water flow rate: 16L / minute

3,   water tank capacity: 12L, made of stainless steel

Vacuum   pump

1,   voltage: AC208V-240V single phase

2,   pumping rate: 1.1L / s

3,   the ultimate vacuum: 1E-2torr

Precautions

The   instructions must be read carefully before handling and the operator must   wear a protective mask. When used, the smelting must be carried out under   flowing argon of ≤0.02Mpa, the flow rate is less than 200ml / min, and the   air pressure in the quartz tube should always be kept <0.02MPa. During the   heating process, always pay attention to the air pressure in the quartz tube.

The   full value will cause the quartz tube to crack, the flange to be pulled out,   and even cause personal injury.