SP-MSM207 is a compact arc melting furnace, consisting of a water-cooled tungsten electrode, a water-cooled copper hearth, and a water-cooled stainless steel chamber. A wobble stick is included to flip metallic sample for re-melting. A vacuum casting fixture can be added as optional. It is an excellent tool for melting metals into alloys.
Note: Upgrade Max current to 250A, since July 15, 2023

SPECIFICATIONS:

Features	Designed for melting samples < 10g refractory alloy up to 3500 °C under vacuum or ambient pressure.  A water-cooled vacuum chamber, tungsten electrode, and copper crucible A DC power supply for melting current up to 250 A A wobble tungsten electrode with azimuthal and vertical adjustment and to melt samples in different cavities A wobble stick to flip samples for re-melting A tinted observation window.
Pressure Gauge	Choice of a pressure guage Standard: mechanical vacuum pressure gauge Optional: Pirani capacitance diaphragm gauge
Power Supply	7000W (250A) arc melting power supply with ETL Listed  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 Easy electrode tilting and height adjustment (30 mm max) for multiple-cavity melting Capable of melting samples < 10 g refractory alloy in each cavity up to 3500 °C.  A.4.5 g B.10 g
Copper Crucible	Water-cooled copper hearth with 7 cavities of 25 mm Dia. × 8 mm depth (2 ml) (Fig. 1) The customizable copper hearth is available upon request at extra cost (Pic 2 ). A larger arc melter, MSM200 is also available for Fe < 300 g A vacuum casting variation, MSM208 is also available (Fig. 4).    Fig1  Fig. 2
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 wobble stick for sample flipping. Pressure < 3 psig
Vacuum Pump (Optional)	The vacuum level is dependent on the vacuum pump used: 10^-2 torr via a roughing pump. (Roughing Pumps)  10^-5 torr via a turbopump.
Water Chiller & Gas (Optional)	Water cooling is required but not included.  MTI recommend getting a KJ5000 recirculating water chiller.
Compliance	CE certified UL/CSA certification by NRTLs is available at an extra fee.
Related Article	Layered amorphous silicon as negative electrodes in lithium-ion batteries, Journal of Power Source, 332(2016), Leyi Zhao, et. al