Vacuum pump heat treatment of vacuum tempering furnace is a comprehensive technology separated from vacuum technology and heat treatment technology, which means that all and part of the heat treatment process is terminated under the condition of vacuum pump.

Vacuum heat treatment furnace has high thermal efficiency, can complete rapid heating and cooling, can complete no oxidation, no decarburization, no carburization, can remove the phosphorus chip on the surface of the workpiece, and has the function of degreasing and degassing, so as to achieve the effect of surface bright purification. Generally speaking, the processed workpiece is heated slowly in the furnace, the internal temperature difference is small, the thermal stress is small, so the deformation is small. The qualified rate of products is high. It can reduce the cost and has the function of degassing, so as to improve the mechanical performance and service life of the work.

The trolley type annealing furnace is composed of furnace body (including furnace door), furnace lining, furnace door lifting and sealing device, furnace car, furnace car drive mechanism, electric heating device, temperature control and recording system, etc. It doesn't need basic installation and can be used on horizontal ground.

(1) Lining:

The furnace lining is made of aluminosilicate refractory fiber blanket with good heat insulation function, which is processed and combined with large plates and lining.

The furnace body with fire-resistant full fiber large plate structure has good heat insulation function. The full fiber lining is only 1 / 30 of the refractory brick furnace body. It not only has good heat preservation function, but also can save 30% energy compared with the brick resistance furnace of the same specification and increase the heating rate. Annealing furnace manufacturer

All fiber fire-resistant structure has good thermal shock stability, rapid cooling and heating resistance, and its service life is longer than that of brick furnace. This kind of furnace body maintenance is very simple. If it is damaged due to mechanical collision, it can be used as long as one-sided repair is carried out. The furnace lining also has the advantages of simple installation and short construction time.

(2) Steel structure: the whole fiber large plate furnace lining is suspended on the steel framework, which is welded by section steel and steel plate, light and reliable. The steel structure of the furnace is lighter than that of the traditional firebrick furnace because of the selection of the lining of the whole fiber large plate structure.