CN110014237B - Rapid punching process for medium-thickness stainless steel plate - Google Patents
Rapid punching process for medium-thickness stainless steel plate Download PDFInfo
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- CN110014237B CN110014237B CN201910283244.8A CN201910283244A CN110014237B CN 110014237 B CN110014237 B CN 110014237B CN 201910283244 A CN201910283244 A CN 201910283244A CN 110014237 B CN110014237 B CN 110014237B
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- cutting
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 title claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 8
- 239000010935 stainless steel Substances 0.000 title claims abstract description 8
- 238000004080 punching Methods 0.000 title claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 10
- 238000007664 blowing Methods 0.000 claims abstract description 5
- 238000004880 explosion Methods 0.000 claims abstract description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a rapid perforation process for a medium-thickness stainless steel plate, which comprises the following steps: step 1, deep explosion: cutting by using a cutting head with laser power of more than or equal to 3000 watts, wherein the height of the cutting head from the surface of the plate is set to be 12-16 mm; the duty ratio is between 55% and 75%; oxygen gas with the air pressure of 0.6Bar-1.2 Bar; setting the frequency to be 8-20 Hz; the focus position is 50-70% below the surface of the plate to be cut, and the laser irradiation time is 0.5-1.5S; 2, blowing slag, namely adjusting the height of the cutting head to be 10mm away from the surface of the plate; blowing the plate for 1S-2S by using nitrogen with the pressure of 4 Bar; and 3, perforating, namely, adjusting the cutting head to a position 16mm above the surface of the plate by using the cutting head with the power of more than or equal to 3000 watts for cutting and perforating. According to the process, the oxygen explosion depth is utilized to carbonize the material, and the nitrogen with higher pressure is used to blow off the carbonized slag, so that excessive accumulation of surface slag caused by overlong puncture time is greatly reduced, the puncture is connected with the cutting stably, and the cutting stability is ensured.
Description
Technical Field
The invention relates to the field of perforation, in particular to a rapid perforation process for a medium-thickness stainless steel plate.
Background
According to the original punching process, the thick plate punching time is too long, slag on the surface of the plate is accumulated too high, the sensor data of a cutting head is distorted, and the cutting head shakes in the starting moment, so that the focus position floats up and down too much, the instantaneous cutting height and the focus position of the connection cutting starting after the punching action is completed are unstable, and even the connection cutting starting cannot be performed in serious cases.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for perforating a medium-thickness stainless steel plate, so that the phenomenon that the steel plate cannot be cut through due to long perforating time, accumulated slag and unstable cutting start can be solved.
The technical scheme of the invention is as follows:
a rapid perforation process for a medium-thickness stainless steel plate is characterized by comprising the following steps:
step 1, deep explosion
Cutting by using a cutting head with laser power of more than or equal to 3000 watts, wherein the height of the cutting head from the surface of the plate is set to be 12-16 mm; the duty ratio is between 55% and 75%; oxygen gas with the air pressure of 0.6Bar-1.2 Bar; setting the frequency to be 8-20 Hz;
the focus position is between 50 and 70 percent below the surface of the plate to be cut
The laser irradiation time is between 0.5S and 1.5S;
step 2, purging molten slag
Adjusting the height of the cutting head to a position 10mm away from the surface of the plate;
blowing the plate for 1S-2S by using nitrogen with the pressure of 4 Bar;
step 3, perforating
Adjusting the cutting head to a position 16mm above the surface of the plate by using the cutting head with power more than or equal to 3000 watts for cutting and punching;
the duty ratio is between 60% and 85%, nitrogen with the air pressure of 0.6Bar-2Bar is utilized, the frequency is set to be between 200Hz and 440Hz, the focal position is 50% to 70% below the surface of the plate to be cut, and the laser irradiation time is between 1.S and 2.5S;
in step 1, the height of the cutting head from the surface of the plate changes according to the thickness of the plate: when the plate thickness is increased by 2mm, the height of the cutting head is increased by 1mm, and the maximum height is not more than 16 mm;
duty cycle variation according to sheet thickness: when the plate thickness is increased by 2mm, the duty ratio is increased by 2 percent, and the maximum duty ratio is not more than 75 percent;
variation of air pressure according to sheet thickness: when the plate is increased by 2mm, the pressure is increased by 0.1Bar, and the maximum pressure is not more than 1.2 Bar; wherein the purity of the air pressure is not lower than 99.99%;
variation of frequency according to sheet thickness: for every 2mm increase in plate thickness, the frequency increases by 1Hz, up to 20 Hz.
In a further improvement of the above scheme, in step 2,
variation of pressure according to sheet thickness: every time the plate is increased by 2mm, the time is increased by 0.1S, the maximum time is not more than 2S, and the purity of nitrogen is not less than 99.99 percent.
In step 3, the duty ratio is changed according to the plate thickness: when the plate thickness is increased by 2mm, the duty ratio is increased by 2 percent, and the maximum duty ratio is not more than 85 percent;
variation of frequency according to sheet thickness: the frequency is increased by 30Hz and not more than 440Hz for every 2mm of plate thickness
Change in laser irradiation time according to sheet thickness: the time is increased by 0.1S and the maximum is not more than 2.5S for every 2mm of plate thickness.
Advantageous effects
The process shortens the puncture time by about 30-60% on the original basis, utilizes oxygen to explode deeply, carbonizes the material, and uses nitrogen with higher pressure to blow off carbonized slag, thereby greatly reducing the phenomenon that too much slag is accumulated on the surface due to overlong puncture time, ensuring stable connection with cutting after puncture is finished, and ensuring cutting stability.
Detailed Description
The present invention will be further described with reference to the following specific examples.
A rapid perforation process for a medium-thickness stainless steel plate is characterized by comprising the following steps:
step 1, deep explosion
Cutting by using a cutting head with laser power of more than or equal to 3000 watts, wherein the height of the cutting head from the surface of the plate is set to be 12-16 mm; the duty ratio is between 55% and 75%; oxygen gas with the air pressure of 0.6Bar-1.2 Bar; setting the frequency to be 8-20 Hz;
the focus position is between 50 and 70 percent below the surface of the plate to be cut
The laser irradiation time is between 0.5S and 1.5S;
step 2, purging molten slag
Adjusting the height of the cutting head to a position 10mm away from the surface of the plate;
blowing the plate for 1S-2S by using nitrogen with the pressure of 4 Bar;
step 3, perforating
Adjusting the cutting head to a position 16mm above the surface of the plate by using the cutting head with power more than or equal to 3000 watts for cutting and punching;
the duty ratio is 60-85%, nitrogen with air pressure of 0.6Bar-2Bar is used, the frequency is set to be 200Hz-440Hz, the focus position is 50-70% below the surface of the plate to be cut, and the laser irradiation time is 1.S-2.5S
In step 1, the height of the cutting head from the surface of the plate changes according to the thickness of the plate: when the plate thickness is increased by 2mm, the height of the cutting head is increased by 1mm, and the maximum height is not more than 16 mm;
duty cycle variation according to sheet thickness: when the plate thickness is increased by 2mm, the duty ratio is increased by 2 percent, and the maximum duty ratio is not more than 75 percent;
variation of air pressure according to sheet thickness: when the plate is increased by 2mm, the pressure is increased by 0.1Bar, and the maximum pressure is not more than 1.2 Bar; wherein the purity of the air pressure is not lower than 99.99%;
variation of frequency according to sheet thickness: for every 2mm increase in plate thickness, the frequency increases by 1Hz, up to 20 Hz.
In a further improvement of the above scheme, in step 2,
variation of pressure according to sheet thickness: every time the plate is increased by 2mm, the time is increased by 0.1S, the maximum time is not more than 2S, and the purity of nitrogen is not less than 99.99 percent.
In step 3, the duty ratio is changed according to the plate thickness: when the plate thickness is increased by 2mm, the duty ratio is increased by 2 percent, and the maximum duty ratio is not more than 85 percent;
variation of frequency according to sheet thickness: the frequency is increased by 30Hz and not more than 440Hz for every 2mm of plate thickness
Change in laser irradiation time according to sheet thickness: the time is increased by 0.1S and the maximum is not more than 2.5S for every 2mm of plate thickness.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (1)
1. A rapid perforation process for a medium-thickness stainless steel plate is characterized by comprising the following steps:
step 1, deep explosion
Cutting by using a cutting head with laser power of more than or equal to 3000 watts, wherein the height of the cutting head from the surface of the plate is set to be 12-16 mm; the duty ratio is between 55% and 75%; oxygen gas with the air pressure of 0.6Bar-1.2 Bar; setting the frequency to be 8-20 Hz;
the focus position is 50% -70% below the surface of the plate to be cut;
the laser irradiation time is between 0.5S and 1.5S;
the height of the cutting head from the surface of the plate in the step 1 is changed according to the thickness of the plate: when the plate thickness is increased by 2mm, the height of the cutting head is increased by 1mm, and the maximum height is not more than 16 mm;
duty cycle variation according to sheet thickness: when the plate thickness is increased by 2mm, the duty ratio is increased by 2 percent, and the maximum duty ratio is not more than 75 percent;
variation of air pressure according to sheet thickness: when the plate is increased by 2mm, the pressure is increased by 0.1Bar, and the maximum pressure is not more than 1.2 Bar; wherein the purity of the air pressure is not lower than 99.99%;
variation of frequency according to sheet thickness: when the plate thickness is increased by 2mm, the frequency is increased by 1Hz, and the maximum frequency is not more than 20 Hz;
step 2, purging molten slag
Adjusting the height of the cutting head to a position 10mm away from the surface of the plate;
blowing the plate for 1S-2S by using nitrogen with the pressure of 4 Bar;
in the step 2, the step of the method is carried out,
variation of pressure according to sheet thickness: when the plate is increased by 2mm, the time is increased by 0.1S, the maximum time is not more than 2S, and the purity of nitrogen is not less than 99.99 percent;
step 3, perforating
Adjusting the cutting head to a position 16mm above the surface of the plate by using the cutting head with power more than or equal to 3000 watts for cutting and punching;
the duty ratio is between 60% and 85%, nitrogen with the air pressure of 0.6Bar-2Bar is utilized, the frequency is set to be between 200Hz and 440Hz, the focal position is 50% to 70% below the surface of the plate to be cut, and the laser irradiation time is between 1.S and 2.5S;
in step 3, the duty ratio is changed according to the plate thickness: when the plate thickness is increased by 2mm, the duty ratio is increased by 2 percent, and the maximum duty ratio is not more than 85 percent;
variation of frequency according to sheet thickness: the frequency is increased by 30Hz and not more than 440Hz for every 2mm of plate thickness
Change in laser irradiation time according to sheet thickness: the time is increased by 0.1S and the maximum is not more than 2.5S for every 2mm of plate thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910283244.8A CN110014237B (en) | 2019-04-10 | 2019-04-10 | Rapid punching process for medium-thickness stainless steel plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910283244.8A CN110014237B (en) | 2019-04-10 | 2019-04-10 | Rapid punching process for medium-thickness stainless steel plate |
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| CN110014237A CN110014237A (en) | 2019-07-16 |
| CN110014237B true CN110014237B (en) | 2020-11-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110773885B (en) * | 2019-11-05 | 2022-02-15 | 济南邦德激光股份有限公司 | Laser perforation method |
| CN111266744B (en) * | 2020-03-13 | 2021-03-26 | 大连理工大学 | Pre-cutting-based laser high-precision machining method for copper-steel laminated plate |
| CN112935592A (en) * | 2021-01-21 | 2021-06-11 | 华清创智光电科技(清远)有限公司 | Method for laser processing through hole for preventing molten metal from splashing |
| CN113977112A (en) * | 2021-11-12 | 2022-01-28 | 武汉威士登自动化控制技术有限公司 | High-speed laser perforation method |
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| CN102689091A (en) * | 2011-03-23 | 2012-09-26 | 江苏亚威机床股份有限公司 | Laser beam cutting and perforating apparatus |
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2019
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Patent Citations (10)
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| CN102689091A (en) * | 2011-03-23 | 2012-09-26 | 江苏亚威机床股份有限公司 | Laser beam cutting and perforating apparatus |
| CN103501956A (en) * | 2011-04-21 | 2014-01-08 | 艾迪奇股份公司 | Method for controlling laser cutting process and laser cutting system implementing same |
| CN103537807A (en) * | 2013-10-29 | 2014-01-29 | 上海柏楚电子科技有限公司 | Cutting technology modularization processing method based on laser cutting software |
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| CN110014237A (en) | 2019-07-16 |
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Denomination of invention: A rapid piercing process for medium thick stainless steel plate Effective date of registration: 20210204 Granted publication date: 20201110 Pledgee: Wuxi Xishan sub branch of Bank of China Ltd. Pledgor: WUXI ZHOUXIANG LASER MACHINERY Co.,Ltd. Registration number: Y2021320010049 |
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Date of cancellation: 20211015 Granted publication date: 20201110 Pledgee: Wuxi Xishan sub branch of Bank of China Ltd. Pledgor: WUXI ZHOUXIANG LASER MACHINERY Co.,Ltd. Registration number: Y2021320010049 |
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Denomination of invention: A rapid piercing process for medium thick stainless steel plate Effective date of registration: 20211018 Granted publication date: 20201110 Pledgee: Wuxi Xishan sub branch of Bank of China Ltd. Pledgor: WUXI ZHOUXIANG LASER MACHINERY Co.,Ltd. Registration number: Y2021980010832 |
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Date of cancellation: 20230331 Granted publication date: 20201110 Pledgee: Wuxi Xishan sub branch of Bank of China Ltd. Pledgor: WUXI ZHOUXIANG LASER MACHINERY Co.,Ltd. Registration number: Y2021980010832 |
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Denomination of invention: A Fast Piercing Process for Medium Thick Stainless Steel Plate Effective date of registration: 20230403 Granted publication date: 20201110 Pledgee: Wuxi Xishan sub branch of Bank of China Ltd. Pledgor: WUXI ZHOUXIANG LASER MACHINERY Co.,Ltd. Registration number: Y2023980037292 |
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