Control method for walking-stopping type high-side-pressure sizing press

A control method, the technology of the fixed width machine, applied in the direction of tail end control, etc., to achieve the effect of improving control accuracy, improving rolling rhythm, and good control accuracy

CN103223423AActive Publication Date: 2013-07-31BEIJING ARITIME INTELLIGENT CONTROL
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-07-31

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Abstract

The invention relates to a control method for a walking-stopping type high-side-pressure sizing press. The control method is applied to a control system of a Shougang Jingtang 1580 hot rolling sizing press. The control method comprises the following steps: controlling the speed of a slab subjected to horizontal centering when the plate blank passes through an extrusion chamber of the sizing press to be oblique triangle waveform; switching position control and pressure control of an inlet guide roller and an outlet guide roller of the sizing press by a control window; sending out a starting signal of each roller way when a main motor of the sizing press departs from a stretching angle only with 2-degree superposition; tracking the heat part and the tail part of the slab respectively; when realizing pressure control by utilizing a proportion-integration-differentiation (PID) controller of an integer parameter of a PAC controller of the GE Company, dividing a control factor (actually adopting the integer 10) from the output value of the controller and setting the PID parameter, so that the control precision of the controller is improved. By the control method, the rolling rhythm and the control precision are improved. A good effect is achieved when the control method is applied to control of the Shougang Jingtang 1580 hot rolling sizing press.
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Description

technical field

[0001] The invention belongs to the technical field of control of a large side pressure fixed width machine in the hot continuous rolling production process, and in particular relates to a control method of a stop-and-go type large side pressure fixed width machine. Background technique

[0002] Slab Sizing Press (Slab Sizing Press, English abbreviation SSP, Chinese abbreviation Scale Width Machine) is used as a hot-rolled large side pressure width adjustment equipment, and rolls a large slab width on the full length of the slab in the forging state. , through one pass of side pressing, the maximum width reduction can reach 350mm; while the vertical roller mill rolls the slab in the rolling state, after 1 to 5 passes of rolling, the maximum side pressure does not exceed 100mm. As the vertical rolling mill attached to the front of the horizontal rolling mill, it can only achieve small side pressure and realize automatic width control (AWC), and use a more effi...

Examples

Embodiment Construction

[0019] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0020] The control system of Shougang Jingtang 1580 hot-rolling fixed-width machine adopts the PAC controller RX7i CPE040 CPU of GE Company, the analog quantity function module of the main cabinet frame adopts the third-party template of MEN Company based on the VME bus, and the digital quantity template adopts the PAC RX7i of GE Company; The cabinet adopts VersaMax I / O station system of GE Company. The main process functions completed by the control system of Shougang Jingtang 1580 hot rolling sizing machine include high-pressure water billet descaling, slab conveying and pinching, slab centering, pressure balance of slab sizing device, hammer head replacement and process water cooling etc.

[0021] The hardware components involved in the control system of the sizing machine are arranged in the order of the upstream and downstream of the rolling lin...