Box-type muffle furnace is a commonly used high-temperature furnace, which is widely used in metal heating, sintering, annealing and other processes. cnc-horizontal-metal-band-sawing-machine-gz4265In order to ensure the accuracy and stability of the temperature in the furnace, it is very important to verify the box-type muffle furnace. This article will give a detailed introduction to the inspection records of box-type muffle furnaces.automatic-type-double-column-horizontal-metal-band-sawing-machine-gz4240  Furnace door sealing performance verification The sealing performance of the furnace door is one of the important factors for the box-type muffle furnace to maintain temperature stability. The verification record should include the following: 1. Check whether the furnace door seal is intact and whether there are problems such as aging and cracking;automatic-type-double-column-horizontal-metal-band-sawing-machine-gz4240-1-5-meters-servo  ⒉. Make sure there is no obvious air leakage after the furnace door is closed; 3. Evaluate whether the sealing performance meets the requirements by observing whether there is obvious heat leakage around the furnace door.Alumina ceramic densely sintered