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Product Name
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MSM20-8 Compact Vacuum Arc Melting System with Vacuum Casting Mold for 6mm Dia. Rod
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Features
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1. Utilize the vacuum force to draw melt into the casting mold at the bottom to form a 6mm Dia. rod .
2. Designed for melting samples < 10g iron-based alloy up to 3000 °C under tiny positive pressure or low vacuum
3. Water-cooled SS vacuum chamber, electrode, and copper crucible allows arc melting of multiple samples without cross-contamination
4. Powerful arc melting power supply enables reliable, stable arc ignition
5. Easy electrode tilting and height adjustment via a handwheel
6. A built-in mechanical manipulator for tilting and rotating samples without breaking the vacuum
7. A tinted observation window on the front for monitoring melting process
    
Casting Module Chamber Door Front Window Flashlight Insert Manipulator
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Vacuum Suction Casting & Copper Crucible
 
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1. Vacuum suction casting 6mm Dia. rod, 30g max.
2. The sucking force is generated by evacuating the bottom cold copper casting mold. This results in rapid solidification of the melt which is ideal for reducing the shrinkage cavity defects
3. One solenoid valve is built in for sucking operation
4. The water-cooled copper crucible has 7 cavities:
5. Central cavity (35mm dia. × 10mm depth) is for vacuum suction casting
6. The other six round cavities (25 mm Dia. × 8 mm depth) are reserved for metal alloy pellet preparation, max. 10g
7. Optional:You may modify crucible in 70 mm Dia. to melt and casting max.100 g ( Fe based alloy)
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Vacuum Pressure Gauge
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1. A mechanical vacuum pressure gauge is installed for monitoring the chamber pressure.
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Power Supply
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1. Input voltage: 110 or 220 VAC selectable, single phase
2. Input current: 34A max. (One 40A breaker is installed in the power supply. Recommended wall breaker amp ≥ 40A)
3. Output DC output: 15 V / 125 A at 35% duty cycle - 110 V input ,
18 V / 185 A at 35% duty cycle - 220 V input
4. Minimum DC current output: 24A
5. Pulse DC output modes available
6. Manual knob control of the output current
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Tungsten Electrode
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1. 6 mm Dia. tungsten electrode with water cooling, Non-consumable tungsten arc stinger
2. Easy electrode tilting and height adjustment (30 mm max) for multiple-cavity melting
3. Capable of melting samples < 10g up to 3000 °C, which can melt all types of metals
Pic.A is a 4.5 g tungsten melt drop
Pic.B is a 10 g tungsten melt drop
 
A4.5g B10g
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Optionat extra cost
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1. If choose larger copper crucible with 55 Dia × 10D （mm) as the pic below (Pic.1-3), with modified electrode tip,300A power supply, the furnace can melt and cast 50 g SS304.
2. The furnace can be used for sealing Ta or any alloy tube by optional rotation module as the Pic below (Pic.4-7)
      
Pic.1 Pic.2 Pic.3 Pic.4 Pic.5 Pic.6 Gif.7
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Vacuum Chamber
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1. Water cooled vacuum chamber with dimensions of Φ 200mm × 350 mm H
2. A Φ120mm front door for easy sample loading and retrieving
3. A tinted observation window on the front for monitoring the melting process
4. A built-in mechanical manipulator for tilting and rotating samples without breaking the vacuum
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Vacuum Pump
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The vacuum level is dependent on the vacuum pump used:
1. 1.10-3 torr via a mechanical/roughing pump. (Roughing Pumps Optional )
2. 10-5 torr via a double-stage rotary vacuum pump VRD-16(Include ).
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Water Chiller & Gas (Optional) 
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1. Water cooling is required (included) for the chamber, copper mold, and electrode.
2. High purity inert gas with at least 5N purity (>99.999%) is required (not included)
3. 5% Hydrogen + 95% Argon gas may be used to prevent oxidation during the melting process
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Furnace Dimensions
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540 mm W × 540 mm D × 920 mm H (exclude the power supply)
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Chamber Dimensions
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Φ200 mm × 350mm
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Net Weight
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50 kg
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Shipping Weight & Dimensions
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500 lbs 48" × 40" × 52"
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Compliance
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CE certified
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Warranty
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One-year limited warranty with lifetime support
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Application & Warning Notes
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1. High purity 4N Ar gas is required for the melting operation.
2. A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 psi for safe operation.
3. To avoid any damages to the mechanical pump or turbo pump, please install an Inline Particle Trap (maximum 1E-4 Torr vacuum with turbo pump) on the pump inlet port .
4. Must Wear Welder Glass or Auto Welding Shade while observing the Arc while welding.
5. An example of the system setup with a turbo pump can be on the left
6. The unit is designed for arc melting operation under tiny positive pressure or low vacuum (0.01 – 0.11 MPa pressure, or positive 0.01 MPa to negative 0.09 MPa pressure). Never operate the unit at high vacuum or high positive pressure!
7. During melting operation, never allow the electrode to touch the material or the copper crucible! Do not operate the mechanical manipulator during the melting process.
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