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立式工频感应再加热炉的常用温度为1250～1350℃。再加热的工件进入该炉的温度为900℃,并要求在短时间内(10分钟左右)迅速再加热到1250～1350℃。感应圈与被加热工件之间的间隙约50毫米。由于感应圈的有机绝缘材料不能耐高温,所以设计要求在工件与感应圈之间应有一个耐火及隔热炉衬,其中最大尺寸约为ф460/ф500×1500毫米。当炉内再加热工件温度为1250～1350℃时,炉衬外型温度能低于一般绝缘材料老化温度,即180℃左右。
Vertical frequency induction reheating furnace temperature is 1250 ~ 1350 ℃. The reheated workpiece enters the furnace at a temperature of 900 ° C and requires rapid reheating to 1250-1350 ° C in a short period of time (about 10 minutes). The gap between the induction coil and the heated workpiece is about 50 mm. As the induction coil of organic insulation material can not be high temperature, so the design requirements between the workpiece and the induction coil should have a refractory and thermal insulation lining, the largest size of about ф460 / ф500 × 1500 mm. When the reheating temperature of the furnace is 1250 ~ 1350 ℃, the lining temperature can be lower than the normal aging temperature of the insulating material, that is about 180 ℃.