CN111001894A - Steel energy-saving cutting method capable of judging cutting quality - Google Patents
Steel energy-saving cutting method capable of judging cutting quality Download PDFInfo
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- CN111001894A CN111001894A CN201911092177.8A CN201911092177A CN111001894A CN 111001894 A CN111001894 A CN 111001894A CN 201911092177 A CN201911092177 A CN 201911092177A CN 111001894 A CN111001894 A CN 111001894A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
- B23K7/102—Auxiliary devices, e.g. for guiding or supporting the torch for controlling the spacial relationship between the workpieces and the gas torch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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Abstract
The invention discloses a steel energy-saving cutting method capable of judging cutting quality, belongs to the technical field of steel processing, and comprises the steps of determining a cutting path, moving a machine head of a cutting machine, adjusting the height of a cutting nozzle, opening a gas valve on the cutting nozzle to supply gas to the cutting nozzle and cutting. The smooth cutting of different thickness steel plates can be realized, the cutting efficiency is effectively improved, the cutting surface flatness is effectively improved, through using a specific cutting nozzle, energy-saving gas is introduced into an energy-saving gas duct, the cutting seam width can be effectively and further reduced, the emission of carbon dioxide and field smoke dust is effectively reduced, the surface of steel cutting is smooth and clean, no undercut is burnt down to form slag, no recarburization and hardening phenomena exist, the steel cutting section is attractive, the cutting quality of a flame cutting gun can be ensured, the condition that the steel is not cut off is avoided, the labor intensity of manual steel cutting is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of steel processing, in particular to a steel energy-saving cutting method capable of judging cutting quality.
Background
Flame cutting refers to a process of melting, blowing slag and cutting a steel material by mixing and burning industrial gas and oxygen to reach the temperature required by cutting. The specific method is a process of preheating cut metal to an ignition point capable of being violently combusted by using industrial fuel gas, further violently oxidizing the metal by releasing high-pressure oxygen flow, and blowing off slag generated by combustion to form a cut. At present, the adopted industrial gas is propane gas, natural gas or blast furnace gas, and the like, and during the use process, the gas and oxygen saving degree is not high enough and the steel loss is large in the process of cutting the steel billet by utilizing the industrial gas.
At present, the continuous casting billet cutting of international and domestic iron and steel enterprises generally adopts the traditional cutting nozzles which last for decades, although a plurality of cutting nozzles such as quick cutting nozzles, embedded cutting nozzles, split type isobaric cutting nozzles and the like are derived in recent years, the phenomena of rough surface, undercut, slag burning, recarburization and hardening of the steel cutting are generated in the using process, and the steel cutting section is not attractive.
Because the flame cutting gun works under the baking of a high-temperature casting blank for a long time, the working environment is severe, the flame cutting gun cannot work in the best working state, the casting blank is not cut off in production, and manual cutting is needed in the later period, so that the manual labor intensity is increased, and the production efficiency is influenced slightly.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a steel energy-saving cutting method capable of judging the cutting quality, which can realize smooth cutting of steel plates with different thicknesses, effectively improve the cutting efficiency, effectively improve the flatness of a cutting surface and facilitate the improvement of the product accuracy.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A steel energy-saving cutting method capable of judging cutting quality comprises the following steps:
s1, determining a cutting path on the steel plate, wherein the cutting path comprises a cutting starting point;
s2, placing the steel plate with the determined cutting path on a platform of a cutting machine to ensure a horizontal state;
s3, moving a machine head of the cutting machine, enabling a cutting nozzle of a flame cutting gun on the machine head to be located at a position 50mm from a cutting starting point, and enabling the cutting nozzle to be vertical to the surface of the steel plate;
s4, adjusting the height of the cutting nozzle to enable the distance between the top end of the cutting nozzle and the surface of the steel plate to be 15 mm;
s5, opening a gas valve on the cutting torch to supply gas to the cutting torch for cutting;
s6, starting a travelling mechanism of the cutting machine, and adjusting the cutting nozzle to move to a cutting starting point at a speed of 70 mm/min;
s7, synchronously adjusting the moving speed of the cutting nozzle and the distance between the top end of the cutting nozzle and the surface of the steel plate, and detecting the cutting process by using a steel cutting judging system to ensure that the steel is cut off until the cutting is finished.
Furthermore, an energy-saving gas pore channel, a cutting oxygen pore channel and a preheating oxygen pore channel are arranged on the cutting torch, energy-saving gas is introduced into the cutting torch through the energy-saving gas pore channel, cutting oxygen is introduced into the cutting torch through the cutting oxygen pore channel, and preheating oxygen is introduced into the cutting torch through the preheating oxygen pore channel, the aperture of the energy-saving gas pore channel is 0.8mm, and the apertures of the cutting oxygen pore channel and the preheating oxygen pore channel are both 0.9-1 mm.
Further, in S5, the preheating oxygen is started to enter the cutting torch through the preheating oxygen duct, the energy-saving fuel gas enters the cutting torch through the energy-saving fuel gas duct, the cutting oxygen enters the cutting torch through the cutting oxygen duct, the preheating oxygen pressure is set to 0.2mpa, the energy-saving fuel gas pressure is set to 0.02mpa, and the cutting oxygen pressure is set to 1mpa, so as to perform cutting.
Further, the energy-saving fuel gas is prepared by mixing the following raw materials in percentage by weight: 99.1% of natural gas and 9% of energy-saving agent; the energy-saving agent comprises the following components in percentage by weight: 35% of methanol, 25% of higher alcohol and 40% of ethyl acetate.
Further, in S7, the synchronization adjustment method includes: when the distance between the cutting nozzle and the surface of the steel plate is 100mm, the cutting nozzle is adjusted to move to the cutting starting point at the speed of 95 mm/min; when the cutting nozzle moves to the cutting starting point, the distance between the cutting nozzle and the surface of the steel plate is adjusted to be 50mm, and meanwhile, the cutting nozzle is increased to move at a constant speed of 130mm/min along the cutting path until the cutting is finished.
Further, steel cutting decision-making system is including installing volume test probe, the computer on the flame cut rifle and the PLC device of control flame cut rifle walking, volume test probe is connected with the computer, and the computer is connected with the PLC device.
Furthermore, the volume detection probe is connected with a computer, can collect volume, tone and intensity data and convert the data into a sound signal, and transmits the collected sound signal to the computer;
the computer is used for receiving the sound signals collected by the volume detection probe, processing the sound signals by adopting a sound processing program, then storing and analyzing the sound signals, judging whether the flame cutting gun cuts off steel according to the analysis result, and sending the analysis result to the PLC device;
and the PLC device is used for receiving the analysis result sent by the computer and controlling the traveling of the flame cutting gun so as to ensure that steel is cut off.
Further, the judging method of the steel material cutting judging system includes the steps of:
s8, collecting signal modes;
and S9, controlling production application.
Further, the S8 specifically includes:
s81: after the steel is ready to be cut, the flame cutting machine is started, and the steel is cut under the control of the traveling mechanism;
s82: manual inspection is carried out to ensure that the steel is completely cut off in the walking process;
s83: a volume detection probe positioned on the flame cutting gun collects and processes the current sound signal, and then the sound signal is stored in a database to be used as a standard sample of normal working conditions;
s84: replacing normal steel with low-temperature steel, and executing S81;
s85: controlling the traveling speed or the gas quantity of the flame cutting gun to ensure that steel is not cut off;
s86: and S83 is executed, and the acquired signal is used as an abnormal working condition standard sample.
Further, the S9 specifically includes:
s91: after the steel is ready to be cut, the flame cutting machine is started, and the steel is cut under the control of the traveling mechanism;
s92: a detector positioned on the flame cutting gun collects and processes the current sound signal, and compares the current sound signal with the sound signal in the database;
s93: if the signal meets the standard sample of the normal working condition, executing S95;
s94: if the signal meets the standard sample of the abnormal working condition, reducing the walking speed of the cutting machine until the signal meets the standard sample of the normal working condition;
s95: the cutting mechanism moves according to the working speed;
s96: and after cutting is finished, resetting the cutting machine.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the cutting method can realize smooth cutting of steel plates with different thicknesses without changing a cutting device, effectively improves the cutting efficiency, can effectively reduce the cutting seams on a cutting path, improves the flatness of the cutting surface, is beneficial to improving the precision of products, reduces the later processing amount and saves the processing cost.
(2) According to the flame gun, the height and the movement speed of the gun head of the flame gun are adjusted, so that the problems of gun explosion, no penetration of cutting, overlarge cutting seam, large rough oblique angle of a cutting surface and the like are effectively solved, and the economical efficiency is improved.
(3) By using the specific cutting nozzle, the energy-saving gas duct, the cutting oxygen duct and the preheating oxygen duct are arranged on the cutting nozzle, and the energy-saving gas is introduced into the energy-saving gas duct, so that the width of a cutting seam can be effectively further reduced, the emission of carbon dioxide and on-site smoke dust can be effectively reduced, the cutting surface of steel is smooth and clean, no undercut collapse and slag hanging, no recarburization and hardening phenomena exist, and the steel cutting section is attractive.
(4) Through setting up steel cutting decision-making system, can ensure the cutting quality of flame cut rifle, avoid steel not by the emergence of the condition of cutting off, reduce the intensity of labour of artifical cutting steel, improve production efficiency.
Drawings
FIG. 1 is a flow chart of the cutting method of the present invention;
FIG. 2 is a schematic view of the structure of the cutting tip of the present invention;
FIG. 3 is a schematic sectional view of a cutting tip according to the present invention;
FIG. 4 is a logic diagram of the steel material cutting judging system according to the present invention;
fig. 5 is a schematic block diagram of the steel material cutting determination system according to the present invention.
The reference numbers in the figures illustrate:
1 energy-saving gas pore channel, 2 cutting oxygen pore channel and 3 preheating oxygen pore channel.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-3, a method for cutting steel with energy saving function for determining cutting quality includes the following steps:
s1, determining a cutting path on the steel plate, wherein the cutting path comprises a cutting starting point;
s2, placing the steel plate with the determined cutting path on a platform of a cutting machine to ensure a horizontal state;
s3, moving a machine head of the cutting machine, enabling a cutting nozzle of a flame cutting gun on the machine head to be located at a position 50mm from a cutting starting point, and enabling the cutting nozzle to be vertical to the surface of the steel plate;
the cutting nozzle is provided with an energy-saving gas pore passage 1, a cutting oxygen pore passage 2 and a preheating oxygen pore passage 3, energy-saving gas is introduced into the cutting nozzle through the energy-saving gas pore passage 1, cutting oxygen is introduced into the cutting nozzle through the cutting oxygen pore passage 2, and preheating oxygen is introduced into the cutting nozzle through the preheating oxygen pore passage 3, the aperture of the energy-saving gas pore passage 1 is 0.8mm, and the apertures of the cutting oxygen pore passage 2 and the preheating oxygen pore passage 3 are both 0.9-1 mm.
S4, adjusting the height of the cutting nozzle to enable the distance between the top end of the cutting nozzle and the surface of the steel plate to be 15 mm;
s5, opening a gas valve on the cutting torch to supply gas to the cutting torch for cutting; the method specifically comprises the following steps: and starting preheating oxygen to enter the cutting torch through a preheating oxygen pore passage 3, enabling energy-saving fuel gas to enter the cutting torch through an energy-saving fuel gas pore passage 1, enabling cutting oxygen to enter the cutting torch through a cutting oxygen pore passage 2, setting the preheating oxygen pressure to be 0.2mpa, setting the energy-saving fuel gas pressure to be 0.02mpa, setting the cutting oxygen pressure to be 1mpa, and cutting.
The energy-saving fuel gas is prepared by mixing the following raw materials in percentage by weight: 99.1% of natural gas and 9% of energy-saving agent; the energy-saving agent comprises the following components in percentage by weight: 35% of methanol, 25% of higher alcohol and 40% of ethyl acetate.
S6, starting a travelling mechanism of the cutting machine, and adjusting the cutting nozzle to move to a cutting starting point at a speed of 70 mm/min;
s7, synchronously adjusting the moving speed of the cutting nozzle and the distance between the top end of the cutting nozzle and the surface of the steel plate, and detecting the cutting process by using a steel cutting judging system to ensure that the steel is cut off until the cutting is finished.
In S7, the synchronization adjustment method includes: when the distance between the cutting nozzle and the surface of the steel plate is 100mm, the cutting nozzle is adjusted to move to the cutting starting point at the speed of 95 mm/min; when the cutting nozzle moves to the cutting starting point, the distance between the cutting nozzle and the surface of the steel plate is adjusted to be 50mm, and meanwhile, the cutting nozzle is increased to move at a constant speed of 130mm/min along the cutting path until the cutting is finished.
The cutting method can realize smooth cutting of steel plates with different thicknesses without changing a cutting device, effectively improves the cutting efficiency, can effectively reduce the cutting seams on a cutting path, improves the flatness of the cutting surface, is beneficial to improving the precision of products, reduces the later processing amount and saves the processing cost.
According to the flame gun, the height and the movement speed of the gun head of the flame gun are adjusted, so that the problems of gun explosion, no penetration of cutting, overlarge cutting seam, large rough oblique angle of a cutting surface and the like are effectively solved, and the economical efficiency is improved.
By using the specific cutting nozzle, the energy-saving gas duct 1, the cutting oxygen duct 2 and the preheating oxygen duct 3 are arranged on the cutting nozzle, and the energy-saving gas is introduced into the energy-saving gas duct 1, so that the cutting seam width can be effectively further reduced, the emission of carbon dioxide and on-site smoke dust can be effectively reduced, the steel cutting surface is smooth and clean, no undercut burning collapse slag hanging, no recarburization and hardening phenomena exist, and the steel cutting section is attractive.
Referring to fig. 4-5, a steel material energy-saving cutting method capable of determining cutting quality includes a volume detection probe mounted on a flame cutting gun, a computer, and a PLC device for controlling the flame cutting gun to travel, wherein the volume detection probe is connected to the computer, and the computer is connected to the PLC device.
The volume detection probe is connected with the computer, can collect volume, tone and intensity data and convert the data into a sound signal, and transmits the collected sound signal to the computer;
the computer is used for receiving the sound signals collected by the volume detection probe, processing the sound signals by adopting a sound processing program, then storing and analyzing the sound signals, judging whether the steel is cut off by the flame cutting gun according to the analysis result, and sending the analysis result to the PLC device;
and the PLC device is used for receiving the analysis result sent by the computer and controlling the traveling of the flame cutting gun so as to ensure that the steel is cut off.
The judging method of the steel cutting judging system comprises the following steps:
s8, collecting signal modes;
and S9, controlling production application.
S8 specifically includes:
s81: after the steel is ready to be cut, the flame cutting machine is started, and the steel is cut under the control of the traveling mechanism;
s82: manual inspection is carried out to ensure that the steel is completely cut off in the walking process;
s83: a volume detection probe positioned on the flame cutting gun collects and processes the current sound signal, and then the sound signal is stored in a database to be used as a standard sample of normal working conditions;
s84: replacing normal steel with low-temperature steel, and executing S81;
s85: controlling the traveling speed or the gas quantity of the flame cutting gun to ensure that steel is not cut off;
s86: and S83 is executed, and the acquired signal is used as an abnormal working condition standard sample.
S9 specifically includes:
s91: after the steel is ready to be cut, the flame cutting machine is started, and the steel is cut under the control of the traveling mechanism;
s92: a detector positioned on the flame cutting gun collects and processes the current sound signal, and compares the current sound signal with the sound signal in the database;
s93: if the signal meets the standard sample of the normal working condition, executing S95;
s94: if the signal meets the standard sample of the abnormal working condition, reducing the walking speed of the cutting machine until the signal meets the standard sample of the normal working condition;
s95: the cutting mechanism moves according to the working speed;
s96: and after cutting is finished, resetting the cutting machine.
Through setting up steel cutting decision-making system, can ensure the cutting quality of flame cut rifle, avoid steel not by the emergence of the condition of cutting off, reduce the intensity of labour of artifical cutting steel, improve production efficiency.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. A steel energy-saving cutting method capable of judging cutting quality is characterized in that: the method comprises the following steps:
s1, determining a cutting path on the steel plate, wherein the cutting path comprises a cutting starting point;
s2, placing the steel plate with the determined cutting path on a platform of a cutting machine to ensure a horizontal state;
s3, moving a machine head of the cutting machine, enabling a cutting nozzle of a flame cutting gun on the machine head to be located at a position 50mm from a cutting starting point, and enabling the cutting nozzle to be vertical to the surface of the steel plate;
s4, adjusting the height of the cutting nozzle to enable the distance between the top end of the cutting nozzle and the surface of the steel plate to be 15 mm;
s5, opening a gas valve on the cutting torch to supply gas to the cutting torch for cutting;
s6, starting a travelling mechanism of the cutting machine, and adjusting the cutting nozzle to move to a cutting starting point at a speed of 70 mm/min;
s7, synchronously adjusting the moving speed of the cutting nozzle and the distance between the top end of the cutting nozzle and the surface of the steel plate, and detecting the cutting process by using a steel cutting judging system to ensure that the steel is cut off until the cutting is finished.
2. The steel energy-saving cutting method capable of judging cutting quality according to claim 1, characterized in that: the cutting torch is characterized in that an energy-saving gas pore passage (1), a cutting oxygen pore passage (2) and a preheating oxygen pore passage (3) are arranged on the cutting torch, energy-saving gas is introduced into the cutting torch through the energy-saving gas pore passage (1), cutting oxygen is introduced into the cutting torch through the cutting oxygen pore passage (2), preheating oxygen is introduced into the cutting torch through the preheating oxygen pore passage (3), the aperture of the energy-saving gas pore passage (1) is 0.8mm, and the apertures of the cutting oxygen pore passage (2) and the preheating oxygen pore passage (3) are both 0.9-1 mm.
3. The steel energy-saving cutting method capable of judging cutting quality according to claim 2, characterized in that: and in the step S5, starting preheating oxygen to enter the cutting torch through the preheating oxygen pore passage (3), enabling energy-saving fuel gas to enter the cutting torch through the energy-saving fuel gas pore passage (1), enabling cutting oxygen to enter the cutting torch through the cutting oxygen pore passage (2), setting the preheating oxygen pressure to be 0.2mpa, setting the energy-saving fuel gas pressure to be 0.02mpa, setting the cutting oxygen pressure to be 1mpa, and cutting.
4. A steel material energy-saving cutting method capable of performing cutting quality judgment according to claim 3, characterized in that: the energy-saving fuel gas is prepared by mixing the following raw materials in percentage by weight: 99.1% of natural gas and 9% of energy-saving agent; the energy-saving agent comprises the following components in percentage by weight: 35% of methanol, 25% of higher alcohol and 40% of ethyl acetate.
5. The steel energy-saving cutting method capable of judging cutting quality according to claim 1, characterized in that: in S7, the synchronization adjustment method includes: when the distance between the cutting nozzle and the surface of the steel plate is 100mm, the cutting nozzle is adjusted to move to the cutting starting point at the speed of 95 mm/min; when the cutting nozzle moves to the cutting starting point, the distance between the cutting nozzle and the surface of the steel plate is adjusted to be 50mm, and meanwhile, the cutting nozzle is increased to move at a constant speed of 130mm/min along the cutting path until the cutting is finished.
6. The steel energy-saving cutting method capable of judging cutting quality according to claim 1, characterized in that: the steel cutting judgment system comprises a volume detection probe, a computer and a PLC device, wherein the volume detection probe, the computer and the PLC device are installed on the flame cutting gun, the PLC device is used for controlling the flame cutting gun to walk, the volume detection probe is connected with the computer, and the computer is connected with the PLC device.
7. The steel material energy-saving cutting method capable of judging cutting quality according to claim 6, characterized in that: the volume detection probe is connected with the computer, can collect volume, tone and intensity data and convert the data into a sound signal, and transmits the collected sound signal to the computer;
the computer is used for receiving the sound signals collected by the volume detection probe, processing the sound signals by adopting a sound processing program, then storing and analyzing the sound signals, judging whether the flame cutting gun cuts off steel according to the analysis result, and sending the analysis result to the PLC device;
and the PLC device is used for receiving the analysis result sent by the computer and controlling the traveling of the flame cutting gun so as to ensure that steel is cut off.
8. The steel material energy-saving cutting method capable of judging cutting quality according to claim 6, characterized in that: the judging method of the steel cutting judging system comprises the following steps:
s8, collecting signal modes;
and S9, controlling production application.
9. The steel material energy-saving cutting method capable of judging cutting quality according to claim 8, characterized in that: the S8 specifically includes:
s81: after the steel is ready to be cut, the flame cutting machine is started, and the steel is cut under the control of the traveling mechanism;
s82: manual inspection is carried out to ensure that the steel is completely cut off in the walking process;
s83: a volume detection probe positioned on the flame cutting gun collects and processes the current sound signal, and then the sound signal is stored in a database to be used as a standard sample of normal working conditions;
s84: replacing normal steel with low-temperature steel, and executing S81;
s85: controlling the traveling speed or the gas quantity of the flame cutting gun to ensure that steel is not cut off;
s86: and S83 is executed, and the acquired signal is used as an abnormal working condition standard sample.
10. The steel material energy-saving cutting method capable of judging cutting quality according to claim 8, characterized in that: the S9 specifically includes:
s91: after the steel is ready to be cut, the flame cutting machine is started, and the steel is cut under the control of the traveling mechanism;
s92: a detector positioned on the flame cutting gun collects and processes the current sound signal, and compares the current sound signal with the sound signal in the database;
s93: if the signal accords with the standard sample of the normal working condition, the cutting mechanism walks according to the working speed;
s94: if the signal meets the standard sample of the abnormal working condition, reducing the walking speed of the cutting machine until the signal meets the standard sample of the normal working condition;
s95: and after cutting is finished, resetting the cutting machine.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111761162A (en) * | 2020-06-29 | 2020-10-13 | 马鞍山钢铁股份有限公司 | Flame cutting process for reducing depth of cutting heat affected zone of H-shaped steel web |
| CN112388103A (en) * | 2020-11-07 | 2021-02-23 | 广东韶钢松山股份有限公司 | Cutting gun control method of flame cutting machine, readable storage medium and flame cutting machine |
| CN114905019A (en) * | 2021-02-10 | 2022-08-16 | 上海梅山钢铁股份有限公司 | Intelligent control method for cutting machine gun speed based on online blank temperature detection |
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| CN109237481A (en) * | 2018-09-07 | 2019-01-18 | 东北大学 | A kind of dedicated cutting torch of high-energy liquefied natural gas and application |
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Application publication date: 20200414 |