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ПН-32井式电炉(图1)主要用于中小型铝镁合金锻件的热处理——淬火及时效。电炉的工作区温度要求控制在±5℃以内。为了合理使用这种炉子,我们曾对电炉作了测温试验,取得了一些数据。小结如下,以供参考。ПН-32井式电炉带有强行循环空气装置,炉内空气被通风机构沿加热元件强行下压,受热后进入装料筐,并将热量传给加热零件,最后流回到通风机构。如此反复循环。从图1可以看出,基准(仪表)热电偶虽然处于炉内最高温度区域,但由于其仅仅是反映一个点的温度,加之其它一些原因,
ПН-32 pit furnace (Figure 1) is mainly used for heat treatment of small and medium-sized aluminum-magnesium alloy forgings - quenching and aging. Furnace temperature control of the work area within ± 5 ℃. In order to use this kind of stove reasonably, we have carried on the temperature test to the electric stove, got some data. Summary is as follows for reference. ПН-32 electric furnace with forced circulation air device, the furnace air is forced down along the heating element by the ventilation mechanism, heated into the loading basket, and heat to the heating parts, and finally back to the ventilation mechanism. So repeated cycle. As can be seen from Figure 1, although the reference (instrument) thermocouple is in the highest temperature range in the furnace, since it only reflects the temperature at one point, and for other reasons,