Keywords: Furnace Tank, Carburizing Furnace Tank, Carburizing Furnace Liner, Liner, Carburizing, Atmosphere, Casting, Cracking, Flaking, Air Leakage,

Carburizing furnace canister use and maintenance

　　As the outer side of the carburizing furnace canister is close to the electric heating element, the temperature is high, so the furnace canister is required to have good oxidation resistance, the inner side of the furnace canister is in the carburizing atmosphere, so the furnace canister is required to have good resistance to carburization. Because the load of the furnace canister is large, but also requires the furnace canister has a high high-temperature strength.

Carburizing Furnace Tank

　　Oxidized flaking of the surface on the outside of the furnace canister can lead to cracking, making the furnace canister leakage is the main form of failure. Casting defects have a significant impact on the service life of the furnace canister and tend to have more opportunities for oxidization and cracking at the defects. Furnace canisters slightly cracked by patch welding soon after use, and then quickly damaged, which is mainly due to the oxidation, carburization after the decline in welding performance. Sometimes ring cracks are produced below the mouth of the furnace canister, which is related to the structure of the furnace canister and the complex stress situation in the region. It can be seen from the structure, produce ring crack region is the tank high temperature zone and the upper part of the mouth of the tank part of the low temperature zone between the transition zone, therefore, in the upper and lower part of the role of different temperatures, the region of the thermal stress. Therefore, under the effect of different temperatures in the upper and lower parts, the thermal stress in this area is larger. In addition, the area is precisely in the mouth of the furnace tank sealing ring bottom and the tank wall connected to the part of the cross-section is in the part of the change, due to thermal stress and load stress. Due to thermal stress and load stress superposition, coupled with the bottom of the sealing ring is the entire furnace tank support point, the work of the maximum stress. And then the place is the casting of the hot joints, the possibility of casting defects more, thus appearing perpendicular to the stress of the ring cracks.

More Carburizing furnace tank use and maintenance: en.chengchi.net/view-231.html