Air cushion type furnace roller, position closed-loop control system based on furnace roller and application thereof

Abstract

The invention discloses an air cushion type furnace roller. The air cushion type furnace roller comprises a roller sleeve, wherein the roller sleeve is internally provided with four arc-shaped air cushions with the same shape; the four arc-shaped air cushions are combined to form a round shape concentric to the roller sleeve; each arc-shaped air cushion internally comprises an air inlet chamber, and the air inlet chamber is provided with an air inlet chamber inner wall and an air inlet chamber outer wall in sequence from inside to outside; each air inlet chamber inner wall is provided with an air inlet, and a plurality of air cushion modules are uniformly distributed on the outer side of the air inlet chamber outer wall; each air cushion module comprises two separation sheets which are symmetrically arranged on the outer side of the air inlet chamber outer wall and a cushion block arranged between the two separation sheets; and the separation sheets have the same distance from an inner wall of the roller sleeve, and an air hole is formed in the air inlet chamber outer wall between the two separation sheets. The roller sleeve of the furnace roller is floated by pressure generated by the air cushions, and scratches on the surface of belt steel by the furnace roller are reduced. The air cushion type furnace roller can be applied to hot galvanizing and continuous annealing sets so as to meet the higher and higher requirements on the surface quality of users.

Description

Technical field [0001] The application field of the invention is strip steel production, especially in the field of hot-dip galvanizing and continuous annealing, and has a wide range of applications. Its technology mainly uses strip production technology, automatic control, fluid dynamics, material science, etc. Background technique [0002] Production continuity can be seen everywhere in the field of cold-rolled strip steel production today. For example, continuous rolling mill, continuous pickling, continuous annealing, continuous hot-dip galvanizing, continuous color coating, etc., and their mutual combination. [0003] Continuous production has the advantages of high production efficiency, good product quality and stability. However, during the continuous operation of the strip steel, due to the influence of many factors, many problems will occur. For example, poor roller installation accuracy will cause the strip to deviate, hot buckling in the furnace will cause the strip t...

AI Technical Summary

Problems solved by technology

Although this method cancels the steering roller and avoids contact, it is difficult to realize in industry: first, the strip itself is not ideal, and it has problems such as plate shape, which makes the air cushion pressure very unstable. If the plate shape is not good , it is easy to scratch the strip steel; the second is to avoid scratching the strip steel, the thickness of the air cushion should not be too small, so the air volume needs to be very large, resulting in low efficiency

Images