Symmetric rolling technology for T-shaped elevator guide rail steel

Abstract

The invention discloses a symmetric rolling technology for T-shaped elevator guide rail steel. The technology comprises loading and heating, rough rolling of five rolling mills, universal continuous rolling of ten rolling mills, cooling bed cooling, straightening, rough cutting of a disc cold saw, clamp bundling, center subdivision, straightening, sizing sawing of a band saw as well as receiving and warehouse storage. According to the symmetric rolling technology for the T-shaped elevator guide rail steel, the universal rolling mills are used for rolling the elevator guide rail steel, and asymmetric rolling is changed into symmetric rolling by shape change during rolling, so that an original rolling hole type system which is more stable can be reasonably used, and simultaneously, the problems that a guide system is instable during rolling and cooling is uninform after rolling are solved. Compared with a conventional production technology, the rolling yield can be increased greatly, rolling quality and accuracy are stabilized, the rolling accident rate is reduced, and roll consumption is reduced.

Description

technical field [0001] The invention relates to a symmetrical rolling process of T-shaped elevator guide rail steel. Background technique [0002] The T-type elevator guide rail is an important part of the elevator rail system. The overspeed braking of the elevator bridge car is realized by clamping the track with the safety gear installed on the bridge car. It is an important part of the elevator safety system. In the past, there were two main production methods for T-shaped elevator guide rail steel blanks: one was rolled by transverse rolling mill; the other was produced by semi-continuous rolling. Both of these two production methods have problems such as low degree of automation and low production efficiency, and the noise in the workshop is relatively high, and the labor intensity of workers is high. For this reason, the existing production method is to use the square billet to roll the T-shaped guide rail steel blank by the continuous rolling method. This method has ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies in the prior art, to provide a T-type elevator guide rail steel symmetrical rolling process, to rationally utilize the original stable rolling pass system, and to solve the problem of the existing rolling guide rail. Unstable system and uneven cooling after rolling