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Intelligent and dynamic flame cutting device and method for casting blank

A flame cutting, intelligent and dynamic technology, applied in the field of flame cutting, can solve the problems of inability to cut, position deviation, and the edge of the billet cannot be preheated, and achieve the effect of improving cutting quality.

Active Publication Date: 2021-12-14
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problems brought about by this method are: 1. It is difficult to guarantee normal cutting, the position of the slab is deviated during the transportation process, the position of the pre-hot spot is not appropriate, and the edge of the slab cannot be cut without preheating; 2. It is difficult to guarantee the cutting quality. The process parameters remain unchanged and cannot dynamically adapt to the actual situation of the slab. The slab has large slits, uneven cutting surfaces, sagging on the upper part of the cutting surface, and slag hanging on the lower part, resulting in excessive oxide slag, which causes foreign matter in subsequent rolling products. Pressing in, warping the skin, etc., will cause the final product to be changed in size or judgement, and in severe cases, it will be rejected

Method used

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  • Intelligent and dynamic flame cutting device and method for casting blank
  • Intelligent and dynamic flame cutting device and method for casting blank
  • Intelligent and dynamic flame cutting device and method for casting blank

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Experimental program
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Effect test

Embodiment 1

[0031] See attached figure 1 and 2 , the billet intelligent dynamic flame cutting device proposed by the present invention includes a cutting torch, a computer 20, a regulating valve 13, a transmitter 14 and an air source pipeline 6; , preheating oxygen and gas connection, the cutting oxygen and preheating oxygen are transported by the oxygen main pipe, and the gas is transported by the gas main pipe, and the oxygen main pipe and the gas main pipe are not shown in the figure; the regulating valve 13 and variable Conveyors 14 are respectively installed on each gas source pipeline, and are connected with computer 20, and are automatically controlled by computer 20; each gas source pipeline 6 of the cutting torch can also be selected and replaced with other valve parts according to actual needs.

[0032] The regulating valve 13 realizes the opening adjustment by sending control commands remotely so as to realize the precise adjustment of the flow of the gas source pipeline. Mea...

Embodiment 2

[0043] See attached image 3 , the specific structure of Embodiment 2 of the billet intelligent dynamic flame cutting device proposed by the present invention is given. The difference between this embodiment and Embodiment 1 is that the device includes a gas main pipe 1, an oxygen main pipe 2, an ignition gun 3, a cutting torch, a gas source pipeline 6, a manual valve 11, a pressure reducing valve 12, a regulating valve 13, a transmission Device 14, solenoid valve 15, backfire preventer 16 and needle valve 19.

[0044] In this embodiment, the cutting torch includes a first oxygen torch 4, a second torch 5, a first preheated oxygen torch 7, a second preheated oxygen torch 8, a first The gas torch 9 and the second gas torch 10; the first cutting oxygen torch 4 and the second cutting oxygen torch 5 are respectively connected to the oxygen main pipe 2 through the gas source pipeline 6; the first preliminary The hot oxygen torch 7 and the second preheating oxygen torch 8 are resp...

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PUM

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Abstract

The invention relates to an intelligent and dynamic flame cutting device and method for a casting blank. The device comprises cutting guns, a computer, regulating valves, transmitters and gas source pipelines. The cutting guns are connected with cutting oxygen, preheating oxygen and fuel gas through the gas source pipelines correspondingly, the cutting oxygen and the preheating oxygen are conveyed by an oxygen header pipe, and the fuel gas is conveyed by a fuel gas header pipe. The regulating valves and the transmitters are mounted on the gas source pipelines correspondingly, are connected with the computer and are automatically controlled by the computer. According to different process conditions of the casting blank, the process parameters of the cutting guns on the cutting path are intelligently and dynamically adjusted according to information such as a casting blank temperature field or oxide scale distribution and the edge position, it is guaranteed that the cutting process is smoothly carried out, and the flame cutting quality of the casting blank is improved.

Description

technical field [0001] The invention relates to the technical field of flame cutting, in particular to an intelligent dynamic flame cutting device and method for casting slabs. Background technique [0002] Flame cutting is a rough processing technology widely used in the steel industry, especially when the steel thickness is greater than 50mm, flame cutting is the only economical and effective cutting method. [0003] The flame cutting process is divided into three stages: preheating stage, cutting stage and cutting stage. The preheating stage refers to the need to preheat the edge of the steel blank with a preheating flame before cutting the steel. After preheating to the ignition point of the steel, it is fed with high-purity cutting oxygen flow and enters the stage of cutting. The cutting oxygen reacts with the preheated steel to generate oxides and release a lot of heat. The heat of combustion melts the oxides into liquid and heats the steel near the burning surface t...

Claims

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Application Information

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IPC IPC(8): B23K7/00B23K7/10F23D14/42F23D14/66
CPCB23K7/00B23K7/10F23D14/42F23D14/66Y02E20/34
Inventor 何庆王振超高涵张兴泽
Owner NORTHEASTERN UNIV