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A high-precision heating furnace steel pumping positioning control method

A technology of positioning control and heating furnace, applied in the direction of heat treatment process control, heat treatment furnace, furnace, etc., can solve problems such as excessively long advance of the drawing machine, unstable slab lift, slab extraction, etc., to reduce positioning deviation, The effect of reducing the frequency of stuck steel and improving the positioning accuracy

Active Publication Date: 2018-04-27
BAOSHAN IRON & STEEL CO LTD
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AI Technical Summary

Problems solved by technology

[0006] The current steel drawing control technology cannot effectively draw the slab to the center line of the roller table, which may easily cause the problem of unstable lifting of the slab or too long advance of the steel drawing machine. "Steel jamming" occurs when the billet enters the rolling mill

Method used

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  • A high-precision heating furnace steel pumping positioning control method
  • A high-precision heating furnace steel pumping positioning control method

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Experimental program
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Effect test

Embodiment

[0039] Such as figure 2 As shown, the specific control process of the present application is as follows:

[0040] Step 1. The laser displacement sensor at the discharge end of the heating furnace sends laser pulses in real time to detect the position of the slab. When the walking beam sends the slab to the exit of the heating furnace, the laser displacement sensor at the discharge end of the heating furnace detects the slab and heats it. The laser displacement sensor at the discharge end of the furnace is switched on, and the walking beam continues to walk in order to complete the running stepping cycle. At the same time, the first-level computer L1 reads the data measured by the laser displacement sensor at this time.

[0041] Step 2: After the walking beam runs, the first-level computer L1 reads the data measured by the laser displacement sensor again, calculates the overflow amount of the slab running beyond the position of the laser displacement sensor, and uploads the po...

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Abstract

The invention relates to a high-precision heating furnace steel drawing positioning control method. The control method is a method for controlling the positioning accuracy during steel drawing of a slab of a heating furnace, the heat-state width of the slab is utilized, according to the half heat-state width of the slab, the center line of a discharging roller way serves as an original point, and the motion stroke of a steel drawing machine is calculated; according to the control method, it is ensured that the slab can be simply and effectively drawn to the position of the centre line of a furnace drawing roller way, the positioning precision of the slab on the roller way after steel drawing is improved, and the frequency of steel clamping caused by inaccurate positioning when the slab enters a mill is reduced.

Description

technical field [0001] The invention relates to the field of automatic control of metallurgical steel rolling, in particular to a high-precision heating furnace steel-drawing positioning control method, which is a method for controlling the positioning accuracy of a heating furnace slab steel-drawing. Background technique [0002] The role of the heating furnace in production is to heat the billet to the required target temperature. In the electrical control of the heating furnace, in addition to some auxiliary facilities such as pumps and communication control functions, in terms of equipment, it mainly includes pushers, Electric control of walking beam and steel pumping machine. The main function of the steel pusher is to push the slab after the centering in front of the furnace into the furnace so that the walking beam in the furnace can receive it. The main function of the walking beam is to send the heated slab to the exit side of the heating furnace step by step throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/70C21D11/00
Inventor 王彦峰荣鸿伟
Owner BAOSHAN IRON & STEEL CO LTD
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