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Compact Vacuum Arc Melting System with Vacuum Casting Mold for 6mm Dia. Rod - EQ-SP-MSM208

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Item Number: EQ-SP-MSM208
EQ-SP-MSM208 is a compact vacuum arc melting furnace with Vacuum Suction Casting mechanismSuch a unique feature can produce cast products ( 6mm Dia. rod shape, upto 30g) by drawing the molten metal into the bottom cold copper casting mold.  The sucking force applied results in a fast movement and cause the rapid solidification of the melt which is ideal for reducing the shrinkage cavity defects. The machine also features a built-in mechanical manipulator for tilting and rotating metal ingots if re-smelting process is needed. The SS304 chamber ensures a clean and healthy atmosphere suitable for the most demanding experimental requirements. 


  • Utilize the vacuum suction force to draw melt into the cold copper casting mold at the bottom and from a 6mm Dia. rod metal alloy (upto 30g)
  • Designed for melting samples < 10 g up to 3000 °C under tiny positive pressure or low vacuum
  • Water-cooled SS vacuum chamber, electrode, and copper crucible allows arc melting of multiple samples without cross-contamination
  • Powerful arc melting power supply enables reliable, stable arc ignition
  • Easy electrode tilting and height adjustment via a handwheel
  • A built-in mechanical manipulator for tilting and rotating samples without breaking the vacuum
  • A tinted observation window on the front for monitoring melting process
           Casting Module       Chamber Door       Front Window       Flashlight Insert        Manipulator
Vacuum Suction Casting & Copper Crucible 
  • Vaccuum suction casting 6mm dia. rod, 30g max.
  • The sucking force is generated by evacuating the bottom cold copper casting mold. This results in a fast movement and cause the rapid solidification of the melt which is ideal for reducing the shrinkage cavity defects 
  • One solenoid valve is built in for sucking operation
  • The water-cooled copper crucible has 7 cavities:
    • Central cavity (35mm dia. x 10mm depth) is for vacuum suction casting
    • The other six surrounded cavities (25 mm Dia. × 8 mm depth) are reserved for metal alloy pellet preparation, max. 10g
Vacuum Pressure Gauge
Power Supply  
  • Input voltage: 110 or 220 VAC selectable, single phase
  • Input current: 34A max. (One 40A breaker is installed in the power supply. Recommended wall breaker amp ≥ 40A)
  • 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
  • Minimum DC current output: 5 A
  • Pulse DC and AC output modes available
  • Foot pedal control of the output current
Tungsten Electrode

  • 4 mm Dia. tungsten electrode with water coolingNon-consumable tungsten arc stinger
  • Easy electrode tilting and height adjustment (30 mm max) for multiple-cavity melting
  • Capable of melting samples < 10 g 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
               A.4.5 g         B.10 g 
Vacuum Chamber

  • Water cooled vacuum chamber with dimensions of Φ 182 mm × 225 mm H
  • A Φ120mm front door for easy sample loading and retrieving
  • A tinted observation window on the front for monitoring melting process
  • A built-in mechanical manipulator for tilting and rotating samples without breaking the vacuum
Vacuum Pump (Optional)

Water Chiller & Gas (Optional)
  • Water cooling is required (not included) for the chamber, copper mold, and electrode. Please consider our KJ-5000 recirculating water chiller.
  • Water tube for MTI Water Chiller is Size: 12mm O.D x 8mm I.D
  • High purity inert gas with at least 5N purity (>99.999%) is required (not included)
  • 5% Hydrogen + 95% Argon gas may be used to prevent oxidation during melting process
Furnace Dimensions 

  • 540 mm W × 540 mm D × 920 mm H (exclude the power supply) 
  • Power supply dimension: 320 mm L x 185 mm W x 485 mm H
Chamber Dimensions

  •      Φ182 mm × 225 mm
Net Weight
  • 50 kg
  • CE certified
  • UL/CSA certification by NRTLs is available at an extra fee. Please contact us for the quote. Click here to understand the certificate and condition.
  • One-year limited warranty with lifetime support
Operation Manual & Video

Related Article
Application & Warning Notes

  • High purity Ar gas is required for the melting operation. Gas purification module is recommended to ensure gas purity. (Click Pic.1 to order)
  • A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 psi for safe operation. Click here to learn the installation of a gas regulator (Pic.2)
  • 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 (Pic. 3)
  • Must Wear Welder Glass or Auto Welding Shade while observing the Arc while welding. 
  • An example of the system setup with turbomolecular pump can be on the left
  • 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!
  • During arc melting operation, never allow the electrode to touch the material or the copper crucible! Do not operate the mechanical manipulator during the melting process.
  • Option: The user may use a quartz tube shielding to effectively reduce the splash and spilling while arc melting. Please click pic 4 to watch the demo video.
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