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Automatic fire extinguishing method of square and plate blank cutting gun

A technology of automatic fire extinguishing and cutting gun, which is applied in the field of metallurgy, can solve the problems of polluted regional environment, restricting continuous casting production, energy waste, etc., and achieves the effects of saving energy, simple structure, and avoiding energy waste

Inactive Publication Date: 2014-08-27
ANGANG STEEL CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

On the one hand, this mode of operation leads to excessive waste of energy, and at the same time pollutes the regional environment; on the other hand, the nozzle of the cutting torch is in a state of flame burning for a long time, and deformation, damage and faults often occur, which seriously restricts continuous casting production

Method used

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Embodiment Construction

[0014] The specific embodiment of the present invention is further described below:

[0015] An automatic fire extinguishing method for square and slab cutting torches. The automatic extinguishing and ignition actions of the torch cutting torch are realized through the opening and closing of the limit switch of the PLC control system and the power control box. The specific steps are as follows:

[0016] 1) When the fire-cutting clamping device stops at the limit point of the original position, ensure that the clamping device is released, and the billet passes freely in the middle and lower part of the clamping device. At this time, the flat head of the cylinder above the flame-cutting clamping device is at the The recovery position, the limit switch light of the recovery position is on, and the feedback signal of the PLC control system ensures that each gas valve group of the torch gun is in a non-electric state, and the gas source of the torch gun is turned off;

[0017] 2) W...

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Abstract

Provided is an automatic fire extinguishing method of a square and plate blank cutting gun. When a fire cutting clamping device is stopped at an in-situ limit point, a PLC control system feeds back signals to guarantee that gas valve groups of the fire cutting gun are in an un-powered state, and gas sources of the fire cutting fun are closed. When casting blank is pulled to a fixed length, the control system feeds back signals, it is guaranteed that the gas valve groups of the cutting gun are powered through the PLC control system, the gas sources of the cutting gun are opened, and the casting blank is cut. After the casting blank is cut, it is guaranteed that the gas valve groups of the fire cutting gun is un-powered through the PLC control system, and the situation that all the gas sources of the cutting gun are closed is achieved. Compared with the prior art, the automatic fire extinguishing method of the square and plate blank cutting gun has the advantages of being simple in structure, capable of saving energy, rapid to install, convenient to operate, safe, reliable and the like. Automatic fire extinguishing is achieved when the cutting gun of a fire cutting machine is not used for cutting casting blank; automatic ignition operation is achieved when the cutting gun is used for cutting the casting blank, and therefore the purposes of saving energy and prolonging the online service life of equipment are realized.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an automatic fire extinguishing method for a square and slab cutting gun. Background technique [0002] In continuous casting and slab cutting operations, it is hoped to reduce energy consumption such as gas and oxygen required for cutting slabs. The current traditional production method is that the cutting torch of the torch cutter is continuously ignited during the production process of the casting machine, the flame of the cutting torch is continuously sprayed, and the gas is continuously supplied. On the one hand, this mode of operation leads to excessive waste of energy, and at the same time pollutes the regional environment; on the other hand, the nozzle of the cutting torch is in a state of flame burning for a long time, and deformation, damage and faults often occur, which seriously restricts continuous casting production. Contents of the invention [0003] The purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/126B22D11/16
Inventor 黄振徐晓林王鹏刘纯光崔丽丽
Owner ANGANG STEEL CO LTD
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