热处理用的铬锰氮炉底板由于长期在800～900℃工作,并承受各种铸锻和机械加工后的工件的动、静负荷,因此会发生翘曲变形,当炉底耐火砖砌得不平时会加速变形过程。炉底板变形后,使得工件装出炉操作困难,并且因炉底板变形使工件也易随之变形。另外在清扫炉内的氧化皮等杂物时也不易 Chromium manganese nitrogen heat treatment furnace floor due to the long-term work at 800 ~ 900 ℃, and to withstand a variety of casting and machining of the workpiece after the static and dynamic load, it will warp deformation, when the bottom refractory bricks do not Usually will speed up the deformation process. Deformation of the furnace floor, making the workpiece loading furnace operation difficult, and due to deformation of the furnace floor so that the workpiece is also easy to be deformed. In addition, when cleaning the furnace oxide and other debris is not easy