Steelmaking square billet encoding and sizing method

Abstract

The invention relates to a method for accurately sizing a casting billet on a steelmaking continuous casting production line, in particular to a steelmaking square billet encoding and sizing method which comprises the following steps: mounting an increment rotary encoder on a roll of a withdrawal and straightening machine, establishing communication between an upper computer and a PLC by a network, and sending a cutting and sizing plan command from the upper computer to the PLC; when the PLC receives the signal, carrying out data trace calculation and comparison on the accumulated calculation length for sizing of the increment rotary encoder, the radian track of a dummy bar in accordance with a continuous casting process and the planed length of the upper computer; when the casting machine starts casting until stripping is finished, storing the current radian trace data of the dummy bar; and when the accumulated length of the encoder is greater than or equal to the planed length, the PLC sending a screwdown cutting command signal to a cutting vehicle, and simultaneously setting the accumulated length of the encoder to zero to carry out the next trace calculation of the sizing length. By using the withdrawal and straightening roll as a measuring roll, the invention realizes that the encoder can carry out trace calculation and measurement on the sizing data of the casting billet, thereby achieving the advantages of cost saving and accurate measurement.

Description

technical field [0001] The invention relates to a method for precisely dimensioning a billet in a steelmaking and continuous casting production line, in particular to a coded and dimensioning method for a steelmaking billet. Background technique [0002] At present, in the continuous casting cutting and sizing production process, billet sizing methods include infrared sizing, camera sizing, pulling speed sizing and pulse signal sizing, among which infrared sizing and camera sizing are affected by external factors There are many, which is inconvenient to apply; the calculation error of drawing speed and length is relatively large, and there is also a problem that the deviation between the pulse signal and the actual length is too large, resulting in a larger error than the allowable error range of the length. In this case, because the cutting car and the stretching and leveling machine can no longer be modified, long and short blanks will appear during cutting, resulting in w...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the accuracy of continuous casting cutting and sizing, and prevent the problem of waste billets caused by long and short lengths during cutting, and provides a method that does not affect the original pulse signal sizing and casting speed sizing methods, and can also be used Coding and Sizing Method for Steelmaking Billet Using Encoder to Track and Calculate Slab Sizing Data

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