Rotation speed steady-state value fitting method and device for ball-wire mill

A wire rod rolling mill, bar and wire rod technology, which is applied in the field of fitting of the steady state value of the rod and wire rod rolling mill rotation speed, can solve the problems of large deviation of the actual rotation speed of the rod and wire rolling mill, large deviation of the rotary speed of the rod and wire rolling mill, and large deviation of the rod and wire rolling mill.
CN112337981APending Publication Date: 2021-02-09MCC CAPITAL ENGINEERING & RESEARCH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
MCC CAPITAL ENGINEERING & RESEARCH
Publication Date
2021-02-09

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Abstract

The invention discloses a rotation speed steady-state value fitting method and device for a ball-wire mill, and the method comprises the steps: controlling a set rotation speed value of the ball-wiremill to rise or fall to a target rotation speed value in a process that the ball-wire mill works according to the set rotation speed value, and enabling the actual rotation speed value of the ball-wire mill to present a step response process; acquiring an actual rotation speed value of the ball-wire mill in a stable stage; fitting the actual rotation speed value of the ball-wire mill in the stablestage into a straight line in a coordinate system which takes time as horizontal coordinates and takes the rotation speed as vertical coordinates; determining an longitudinal axis intercept value ofthe straight line as an actual rotation speed steady-state value of the ball-wire mill in the steady stage. The accuracy of transfer function parameter identification can be improved, so that a transfer function which conforms to the actual rotation speed of the ball-wire mill better is obtained, and the ball-wire mill is controlled to work, and thus, the situation that bars and wires on the millare accumulated is effectively prevented, and the bar and wire production efficiency is improved.
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Description

technical field

[0001] The invention relates to the field of rolling mill control, in particular to a method and device for fitting the steady-state value of the rotational speed of a bar and wire rolling mill. Background technique

[0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section.

[0003] The continuous hot rolling production line of rods and wires refers to the way of physical deformation, so that the thick and short steel billets are continuously squeezed to form thin and long steel products.

[0004] Before the steel billet is sent to the rod and wire rod hot rolling production line, the steel billet needs to be heated. The steel slab at room temperature is moved to the heating furnace through the walking beam, and the heating furnace uses coal gas or natural gas to heat the slab. In the heating furna...

Claims

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