Arc Melting System (250A) w/ Vacuum Casting - SP-MSM208

Features

• Utilize the vacuum force to draw melt into the casting mold at the bottom to form a 6mm Dia. rod.
• Designed for melting samples < 10 g iron-based alloy 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 the melting process

                                      
Casting Module         Chamber Door           Front Window            Flashlight Insert             Manipulator

• 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 the melting process
• A built-in mechanical manipulator for tilting and rotating samples without breaking the vacuum
• Material: Made of SS304 Steel

• Vacuum suction casting 6mm Dia. rod, 30g max. 3 - 8 mm dia. or 1 - 3 mm thick strip casting mold is available upon request). Please see Pic. 2 for 3 mm x 70 mm rod and Pic. 3 for 1 mm thick strip.
• 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 
• One solenoid valve is built-in for vacuum casting operation
• The water-cooled copper crucible has 7 cavities:
• The central cavity (50mm dia. x 10mm depth) is for vacuum casting
• The other six-round cavities (20 mm Dia. × 8 mm depth) are reserved for metal alloy pellet preparation, max. 10g
• Note: The Copper Mold has been upgraded to the above dimensions since 08/2021 (pic.1 & 2).

pic.1  pic.2 Pic. 3

• A mechanical vacuum pressure gauge is installed for monitoring the chamber pressure. (Bottom left pic)
• The anti-corrosive capacitance diaphragm gauge is optional with additional cost. (Bottom right pic)

       

Vacuum Pump (Optional)

• The vacuum level is dependent on the vacuum pump used:
  • 10^-3 torr via a mechanical/roughing pump. (Roughing Pumps) 
  • 10^-5 torr via a turbopump. 

         

• 7000W (250A) arc melting power supply
• 208-240VAC, 1 and 3 ph, 50/60Hz. 
• @240V 1 Ph: 32A (50A breaker) @240V 3 Ph: 16A (30A breaker)
• Output DC output duty cycle:
  • 60% @ 250A, 100% @ 200A 
• Minimum DC current output: 10 A
• Foot pedal control of the output current

• Tungsten Electrode

• 4 mm Dia. tungsten electrode with water cooling, Non-consumable tungsten arc stinger
• Easy electrode tilting and height adjustment (30 mm max) for multiple-cavity melting
• Capable of melting samples < 10g up to 3500 °C, which can melt all types of metals
• Pic. A is a 4.5 g tungsten melt drop 
  

A.4.5 g 

• A larger copper crucible with 55 Dia x 10D mm) as the pic below (Pic.1-3), with a modified electrode tip 300A power supply, the furnace can melt and cast 50 g SS304. Please contact MTI to request a quote.
• The furnace can be used for sealing Ta or any alloy tube by optional rotation module as the Pic below (Pic.4-7)

                                                      

     

• 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 the melting process

• CE certified
• NRTL or CSA certification is available at an extra fee. Please contact us for the quote.

• Layered amorphous silicon as negative electrodes in lithium-ion batteries, Journal of Power Source, 332(2016), Leyi Zhao, et. al

• High purity 》5N Ar gas is required for the smelting operation. 
• 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 about the installation of a gas regulator (Pic.1)
• To avoid any damage to the mechanical pump or turbopump, please install an Inline Particle Trap (maximum 1E-4 Torr vacuum with turbopump) on the pump inlet port (Pic. 2)
• Must Wear Welder Glass or Auto Welding Shade while observing the Arc while welding. 
• The unit is designed for arc melting operation under positive 0.01 MPa to negative 0.09 MPa pressure). Never operate the unit at a high vacuum or high positive pressure!
• 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.
• Option: The user may use quartz tube shielding to effectively reduce the splash and spilling while arc melting. 

1         2            

• Note: Since July 20, 2020, cavity size is changed to 20 mm dia, and the casting mold is changed to place from top