Long-length rolling method and production line of T-shaped elevator guide rails

Abstract

The invention discloses a long-length rolling method and a production line of T-shaped elevator guide rails. The method mainly comprises the steps of firstly, taking an H-shaped continuously cast bloom as an original blank; secondly, feeding the H-shaped continuously cast bloom to the universal paired one-piece rolling procedure to obtain a pair of symmetrical T-shaped guide rails; thirdly, feeding the one-piece T-shaped guide rails into a cooling device to be cooled, and conducting subdivision and straightening on the one-piece T-shaped guide rails to obtain two independent finished T-shaped rolled pieces; finally, conducting fixed-length sawing and other follow-up processing procedures on the subdivided finished T-shaped rolled pieces to obtain a final finished product. According to the long-length rolling method and the production line of the T-shaped elevator guide rails, cooling bending of a single elevator guide rail caused by limitation of the cooling condition after universal rolling can be avoided, the surface quality of the elevator guide rails can be improved after rolling, post-rolling internal stress can be improved, the size precision and using performance of the elevator guide rails are improved, and the long-length elevator guide rail production technology featured in long-length rolling, long-length cooling and long-length straightening is realized.

Description

technical field [0001] The invention belongs to the field of steel rolling and forming in the iron and steel metallurgical industry, and in particular relates to a rolling method of an elevator T-shaped guide rail and a production line thereof. Background technique [0002] The elevator guide rail is a safe rail for the elevator to run up and down in the well. The guide rail is installed on the well wall and fixedly connected to the well wall by the guide rail frame and the guide rail bracket. It is one of the stable components related to the operation of the elevator system. At present, there is no substitute product. The section of the guide rails commonly used in elevators is an asymmetric section, most of which are similar to a T-shaped section, which has the characteristics of strong rigidity, high reliability, safety and low price. The plane of the guide rail must be smooth without obvious uneven surface. Since the guide rail is the shuttle rail of the guide shoe and s...

AI Technical Summary

Problems solved by technology

[0008] According to the problems existing in the above elevator guide rail production methods, combined with the current universal rolling production technology and control development level, the present invention proposes a long-length rolling method for elevator T-shaped guide rails. This method can not only solve the problem of universal rolling of a single elevator guide rail. The cooling bending phenomenon caused by the limitation of cooling conditions after production can also improve the surface quality of the elevator guide rail after rolling, improve the internal stress after rolling, improve the dimensional accuracy and performance of the elevator guide rail, and realize the "long rolling, long length" of the elevator guide rail. Cooling, long ruler straightening" long ruler production process

Images