After being changed to a light lining, after more than two years of production, the effect of production is obvious, the heating and cooling time of the furnace is shortened, the production and maintenance are convenient, and the product quality is improved (to solve the small bright spot defect on the strip surface). Compared with brick lining, light lining has the following advantages: (1) lining structure is lighter, smaller, and lighter in weight; (2) furnace structure, lining construction and maintenance are flexible and convenient; (3) light furnace lining Less heat loss, faster thermal response, faster furnace heating, and reduced heat dissipation on the furnace wall; (4) Significantly reduced oven time (14 days from bricklaying furnace lining is reduced to 4 days); (5) Outer lining stainless steel sheet, The lining material will not be scattered in the furnace, which can effectively prevent the small bright spots on the surface of the strip; at the same time, the furnace wall is provided with a collision avoidance device, which can effectively prevent the strip from colliding or scratching the inner liner; (6) repair or annual repair At that time, the light linings were generally not repaired, and only simple maintenance was performed, which reduced the workload, reduced the labor intensity, and shortened the maintenance and repair time.
The lining lightening is the development trend of the vertical continuous annealing furnace lining structure. At present, due to the high price of lightweight thermal insulation materials (especially lightweight materials with a temperature resistance of 1200e or more), the use of such materials is also limited by investment and other factors. With the increase in the proportion of lightweight materials made in China, lightweight, lightweight, heat-preserving materials will be more flexible, convenient, and economical in terms of furnace structural design, lining construction, and production management, particularly in advocating energy conservation. Today, the industrial furnace energy-saving technology is operated, and the type of coal that matches the design is used, and the oil temperature and flow rate at the rated inlet and outlet are operated to achieve the best efficiency of the boiler.
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