(Non-self-consuming) The metal melting suction casting furnace is a small arc melting furnace, which can either smelt metal ingots or suction ingots to achieve multiple uses in one furnace and meet the various needs of customers. The furnace is equipped with a visual vacuum pressure gauge to directly observe the vacuum degree in the chamber. The alloy ingot can be turned for multiple melting without damaging the protective atmosphere of the gas, and multiple samples (less than 7) can be prepared at the same time. It is an ideal equipment for preparing metal and alloy samples in universities and research institutes. It can be used for the preparation, purification and mixing of new alloy materials, such as high entropy alloy and high temperature alloy. (Non-consumable) The metal melting and suction casting furnace uses tungsten needles as electrodes. The melting point of tungsten is extremely high, and the arc temperature can reach 4000℃, which can melt almost all metals. During the working of the furnace, the electrodes and crucibles should be cooled with circulating water to ensure that the electrodes and crucibles will not be melted.