Generally, the shell of the trolley furnace is welded by steel plate and section steel. The lining material of the electric furnace is made of ultra-light 0.6g/cmЭ energy-saving refractory insulation bricks. The interlayer is insulated with aluminum silicate fiber felt. Filling and expanding to stone powder insulation, the furnace mouth adopts heavy anti-collision bricks, and the trolley surface layer is heavy and high-alumina anti-pressure bricks. Labyrinth-type refractory materials are used to build the exterior between the electric furnace body and the trolley. The heating elements of this electric furnace are all helical heating elements, which are placed on the side of the furnace and the masonry of the trolley.Which process should be used for quenching after vacuum carburizing? The trolley is equipped with a chromium-manganese-nitrogen heat-resistant steel furnace bottom plate or a 1200 ℃ silicon carbide furnace bottom plate to carry the workpiece. If it is damaged, it is necessary to regularly purge the oxide scale under the bottom plate of the trolley furnace, usually once a week. When purging, the furnace bottom is hoisted, and the oxide scale in the resistance wire groove is cleaned with compressed air.Vacuum heat treatment of high-speed turning tools The lifting and lowering of the furnace door of the trolley furnace is realized by rolling up and down on the guide rail, which not only ensures the matching and sealing between the furnace door masonry and the furnace body masonry when the furnace door is closed, but also ensures that when the furnace door is opened During the process, the masonry will not be damaged by friction. The movement of the furnace door and the trolley is provided by the motor through the worm gear reducer and the chain drive, and is equipped with an electromagnetic brake for proper adjustment.Vacuum heat treatment process of TC11 titanium alloy pipe
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