SP-MSM208 is a compact arc melting furnace with a Vacuum Suction Casting function. Such a unique feature can produce cast products (4 mm Dia. rod shape, up to 30g) by drawing the molten metal into the bottom cold copper casting mold. The sucking force applied results in a fast-moving and cause 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 the re-smelting process is needed. The SS304 chamber ensures a clean and healthy atmosphere suitable for the most demanding experimental requirements. Notes:( Sealing tube option added on Dec 12, 2018) Upgrade Max current to 250A, since July 15, 2023SPECIFICATIONS: 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 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 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 & Copper Crucible 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 Vacuum Pressure Gauge 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. Power Supply 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 Options at extra cost Crucible 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) Pic.1 Pic.2 Pic.3 Pic.4 Pic.5 Pic.6 Pic.7Tilt Casting Kits 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 the melting process Compliance CE certified NRTL or CSA certification is available at an extra fee. Please contact us for the quote. Related Article Layered amorphous silicon as negative electrodes in lithium-ion batteries, Journal of Power Source, 332(2016), Leyi Zhao, et. al Application & Warning Notes 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
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