开云游戏

Overview of circular quenching furnace in Masteel
Masteel ring quenching furnace for continuous operation furnace, fuel using mixed gas, burner in staggered arrangement on the inner and outer ring wall, normal furnace temperature is 1000 ~ 1100 ℃, weak reducing atmosphere, micro positive pressure operation.
Consideration before transformation: comparison between heavy traditional lining and light ceramic fiber lining
Traditional lining structure: refractory brick and heavy castable structure
Disadvantage of lining insulation structure of traditional annular heating furnace;
1, The bulk density is big, resulting in furnace steel structure deformation is serious. 
2, The lining of the thermal conductivity, thermal insulation effect is poor, resulting in furnace cold surface overtemperature ( up to 150 ~    170 ℃ ) energy waste is serious, workers operating environment is bad. 
3, Lining is difficult to overcome the ring furnace inherent defects of inner wall expansion, outer wall expansion. 
4, Poor thermal sensitivity, to the ring furnace microcomputer operation has a certain negative impact, to a certain extent, affect the quality of the product.

Ceramic fiber properties:
1, the volume density is small, and the weight of the folding module lining is only 20 % of that of the light heat-resistant lining. 
2, the heat capacity is small, ceramic fiber material heat capacity is 1 / 9 of the light heat resistant lining, can reduce the lining heat storage loss. 
3, the heat conductivity is low, the heat transfer rate of the ceramic fiber material is 1 / 7 of that of the light clay brick and 1 / 9 of that of the light heat-resistant lining, so that the heat insulation effect of the lining can be greatly improved. 
4, the heat sensitivity is good, more can adapt to the automatic control of the heating furnace. 
In view of the above problems of annular furnace insulation and the performance characteristics of ceramic fiber refractory, the company's designers and hub plant technical personnel after careful deliberation and argumentation, unanimously decided to make a bold attempt to transform the lining. 
Choose a new type of energy-saving lining structure: ceramic fiber blanket and ceramic fiber folding block composite structure.
Heat insulation structure aft energy-saving transformation

In order to meet the special structural requirements of annular furnace roof, ceramic fiber module is made into wedge-shaped structure, and the anchoring structure is slide type.