Plate and strip type roll bottom type heating furnace rolls

Abstract

The invention discloses plate and strip type roll bottom type heating furnace rolls which aim at achieving the technical purposes that the quality of the lower surfaces of plate blanks is guaranteed to the maximum degree under the normal production state, the manufacturing cost is the same as the cost of an original roll model, and the problem of the quality of the lower surfaces of plates and strips can be solved effectively. The furnace rolls are four in number and arranged in parallel. A roll body of each furnace roll is provided with two roll ring sets, wherein two roll rings are arranged in each set. The distance between the two roll rings in each set on each furnace roll body is the same as the distance between the two roll rings in another set. Each roll ring set on one furnace roll is staggered relative to the roll ring set on another furnace roll.

Description

technical field [0001] The invention relates to a roller hearth heating furnace roller of plate and strip type, which is applicable to all roller hearth heating furnaces of plate and strip type, and can effectively improve the quality of the lower surface of a slab. Background technique [0002] During production, the furnace rolls of the CSP heating furnace will cause depressions on the lower surface of the strip during the strip travel process. Although there will be some relief after dephosphorization and then rolling, the actual surface quality of the strip will be affected. It still has a certain influence. The state of the hearth roll is the main cause of the quality defect of the lower surface of the strip. The slab contacts the furnace roll ring at the same position for a long time, which will cause a large number of pits on the lower surface of the slab, which cannot be bridged during rolling. , resulting in batch quality accidents, causing greater losses to manufac...

AI Technical Summary

Problems solved by technology

[0002] During production, the furnace rolls of the CSP heating furnace will cause depressions on the lower surface of the strip during the strip travel process. Although there will be some relief after dephosphorization and then rolling, the actual surface quality of the strip will be affected. It still has a certain influence. The state of the hearth roll is the main cause of the quality defect of the lower surface of the strip. The slab contacts the furnace roll ring at the same position for a long time, which will cause a large number of pits on the lower surface of the slab, which cannot be bridged during rolling. , resulting in batch quality accidents and greater losses to manufacturers

[0003] There are only two types of original furnace rollers, and the arrangement is only interspersed. The arrangement of the roller rings on the furnace rollers is centered and symmetrical with a distance of 45 cm and 60 cm, so that the lower surface of the slab will be the same during the slab travel. The position is pressed into 8 obvious deep indentations, resulting in quality defects

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