A hydraulic pressing system for a four-column twenty-high rolling mill

Abstract

A hydraulic pressing system for a four-column twenty-high rolling mill provided by the present invention includes a main pressure oil pipe P, a main oil return pipe T, an oil drain pipe Y, and a servo pressing system L i , Roll adjustment system D s , servo cylinder C i and pressure sensor F i And built-in magnetostrictive displacement sensor; among them, the servo pressing system L i and roll adjustment system D s Cooperative work and roll system adjustment system D s The use of master-slave control effectively improves the control accuracy of the hydraulic system; at the same time, the servo cylinder C i , Servo pressing system L i The servo valve and the built-in magnetostrictive displacement sensor form a position closed loop to ensure that the servo cylinder C i Position accuracy of the piston rod in the middle, servo pressing system L i Proportional pressure reducing valve and pressure sensor F in i The two form a pressure closed loop to adjust the servo cylinder C in a timely manner. i The working pressure of the medium hydraulic oil has greatly improved the yield of "hand-sheared steel".

Description

technical field [0001] The invention belongs to the field of rolling equipment hydraulic systems, in particular to a hydraulic pressing system for a four-column twenty-high rolling mill. Background technique [0002] "Hand-sheared steel" is a precision ultra-thin steel strip that can be shredded by hand and has a thickness of less than 0.1mm. Due to its excellent precision, corrosion resistance, and surface finish, it is widely used in aerospace, national defense, medical equipment, In petrochemical, precision instrument and other fields, the current equipment capable of producing "hand-sheared steel" is a four-column twenty-high rolling mill, which consists of three parts: the lower frame, the upper frame and four columns; The frame is fixed, the four columns are respectively fixed on the four corners of the lower frame, and the upper frame moves up and down along the four columns to realize production. Wherein, a servo pressing cylinder is installed on the top of each col...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings and deficiencies of the existing technology, a hydraulic pressing system for a four-column twenty-high rolling mill is provided, which can solve the problem of "pressing" caused by the inability to guarantee the position and pressure accuracy of the servo pressing cylinder in the four-column twenty-high rolling mill. The problem of low yield of "hand-sheared steel"

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