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The main difference between trolley type heating furnace and trolley type heat treatment furnace is the temperature in the furnace. the furnace temperature of the heating furnace is 1200 ~ 1300 ℃ and the furnace temperature of the heat treatment furnace is 650 ~ 1200 ℃.
Thermal insulation structure for lining of car stove

● heat preservation of trolley heat treatment furnace:　

Furnace top, furnace wall and furnace door: hlgx - 589 / 389 containing zirconium / high purity ceramic fiber module is adopted, and the insulation thickness is 300 / 250 mm; The compensation blanket adopt a blanket hlgx - 512 / 312 containing zirconium / high purity ceramic fib; Backing blanket using high purity ceramic fiber blanket hlgx - 312, insulation thickness of 30 / 50 mm.. Insulation thickness and material selection, according to the heat treatment temperature to determine. 
Furnace bottom: refractory bricks are used.
Technical advantage

Sealing treatment at the joint of furnace roof and furnace wall: the joint between furnace roof and furnace wall is the weak area of lining, which is easy to form air leakage or blowby, reducing the insulation effect of lining and affecting the service life of lining at the same time. In order to prevent this part from appearing through seam, ceramic fiber module and ceramic fiber backing blanket are used in the joint between wall and wall and between wall and roof. At the same time, in order to prevent the high-temperature shrinkage at the joint of the ceramic fiber module on the hot surface layer, a compensation seam is arranged at the joint of the wall top, a fiber blanket made of the same material as the module is folded in half, the compression ratio is maintained at more than 30 %, and the high-temperature sealing effect of the part is ensured by forcibly inserting the fiber blanket. Furnace wall and roof joint processing as shown in the figure below: