Suspending type convection current clamp method for bell type annealing furnace

Abstract

The invention relates to a convective stacking method of a hood-type annealing furnace, in particular to a suspended-type convective stacking method used on the hood-type annealing furnace. The method is characterized in that: first, the inner rings of steel strip rolls are attached with sleeves; second, one steel strip roll is stacked on a charging floor of the annealing furnace, a convective plate is arranged above the steel strip roll in an overlapping manner, the bottom of the convective plate is matched with the sleeve in the steel strip roll, the sleeve supports the convective plate, and the upper surface of the steel strip roll is not contacted with the convective plate; third, the steel strip roll is put on the convective plate in an overlapping manner, the lower surface of the steel strip roll is contacted with the convective plate, and the sleeve in the steel strip roll is positioned on the upper part of the convective plate, so that all the steel strip rolls are installed layer upon layer in an overlapping manner. The convective stacking method can lead only the lower surfaces of the relative steel strip rolls to be contacted with the convective plate, and lead the upper surfaces thereof to be not contacted with the convective plate, thereby solving the problem that the lower layer steel strip rolls are pressed lengthways in traditional equipment; therefore, the bonding incidence rate of the lower layer steel strip rolls is greatly reduced, in addition, the lengthways folding occurrence probability of the steel strip rolls is also reduced correspondingly.

Description

technical field [0001] The invention relates to a convective stacking method of a bell annealing furnace. Background technique [0002] The existing bell-type annealing furnace adopts the single-stack tight-coil annealing method, and the steel coils 3 are stacked one by one through the middle convection plate 4 for annealing treatment, see figure 1 . Apparently, when this method is used for annealing, for each layer of strip steel in the bottom three steel coils, the schematic diagram of its force status is as follows: image 3 shown. The downward force is the pressure P1 of the weight of the upper steel coil and the weight of the convection plate, and the weight P2 of the steel coil itself; the upward force is the support force P3 of the lower convection plate or the support platform of the hearth. Under normal circumstances, P1, P2, and P3 are in a state of static equilibrium, and P3 is the sum of P1 and P2, see figure 2 -(a). However, due to the axial force, for a s...

AI Technical Summary

Problems solved by technology

The occurrence of longitudinal folding of the steel coil not only makes it difficult to open the steel coil in the downstream leveling process, but also easily scratches the roll surface, resulting in accidental roll change

In more cases, the site often directly treats the longitudinally folded inner ring several layers of strips as scrap steel, causing huge economic losses to the enterprise

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