Bell type furnace Brief Bell type furnace is new type and energy-saving batch type furnace. Mainly used for coiled stock, pipe coil, coiled silicon steel sheet of red copper, brass, alloy copper for non-oxidation n bright heat treatment. Structure This bell type furnace is mainly composed of 1 heating shield,2 furnace base,2 inner cover, cooling cover, valve braket and pipeline. Advantages 1.Strong convective circulation, shortening heat treatment cycle and high efficiency; 2.Using PPM sealing mechanism in the connection part, more stable atmosphere, can avoid H2 or other protective atmosphere combined with air; 3.Using the microcomputer intelligent instrument to control furnace temperature, can perform auto control.