functional characteristics?? 1.melting and holding temperature furnace are one-body, they are connected by one blind pass, the valve control the liquid-copper into the holding temperature furnace. 2.melting and holding temperature furnace adopt large-area Jet-melt Ditch 3.crystallizer adopt cavity structure, so it has a good cooling effectiveness?? 4.holding temperature furnace adopt stepless pressuer-regulator,so the control of temperature is continuous and automatic 5.the driven system of tractor adopt keyless connection and Seamless Gear drive
