CN1121453A - Methods of cutting materials - Google Patents
Methods of cutting materials Download PDFInfo
- Publication number
- CN1121453A CN1121453A CN95104196A CN95104196A CN1121453A CN 1121453 A CN1121453 A CN 1121453A CN 95104196 A CN95104196 A CN 95104196A CN 95104196 A CN95104196 A CN 95104196A CN 1121453 A CN1121453 A CN 1121453A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- laser
- cutting
- methods
- cutting materials
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 title claims abstract description 16
- 238000005520 cutting process Methods 0.000 title claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000003698 laser cutting Methods 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
Images
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
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
Landscapes
- 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 material cutting method. The part of the surface of a workpiece, which is cut, is heated to a temperature between the ignition point and the melting point of the workpiece by a laser beam which is defocused, and then is sprayed by pressurized oxygen or rich oxygen injection airflow, thus obtaining the incision with clean and tidy edges and excellent surface smoothness.
Description
The present invention relates to a kind of methods of cutting materials, particularly use a kind of method of the thick shaped steel of low power laser cutter cuts.
As you know, laser cutting process is that the laser beam that power is quite high focuses on the process on the material surface to be cut.The energy of laser is kept material and is made it to be under its fusing point, blows down the material that melts with jet-stream wind at a high speed, thereby severs an otch.This known method is all used the laser energy at the entire depth of otch, thereby will cut out the laser beam that qualified otch just needs the high power high-quality.
The objective of the invention is to improve the particularly efficient of thick shaped steel of low power laser cutting, promptly, utilize hyperbaric oxygen or oxygen enrichment jet-stream wind on cut surface, to obtain the otch of edge neatly and orderly and the surface smoothness of high-quality simultaneously by laser beam being scattered to improve the temperature of material to be cut.
Methods of cutting materials of the present invention comprises the following steps: with the laser beam that defocuses, disperse the surperficial position of material to be heated to temperature between its burning-point and the fusing point, and sprays this position with the oxygen or the oxygen enrichment jet-stream wind that pressurize.
The power output of laser instrument is preferably between 500 watts and 2000 watts, and the pressure of oxygen-enriched stream is preferably between 7 crust and 8 crust.In a most preferred embodiment, the position that laser beam heated is greater than position that jet-stream wind sprayed.
Referring now to description of drawings one embodiment of the present of invention.In the accompanying drawing:
Fig. 1 is the perspective view of laser cutting nozzle and workpiece to be cut;
Fig. 2 is the profile of Fig. 1 laser cutting nozzle;
The graph of relation of cutting speed and material thickness when Fig. 3 is 800 watts of laser instruments of employing.
As shown in Fig. 1 and Fig. 2, the inventive method has a lens mount 2 in order to the cutting nozzles 1 of the shaped steel that cuts thick about 45 millimeter, and lens 4 are equipped with in the inside, for the usefulness that focuses on the light beam that 800 watts of laser instrument (not shown)s launch.Nozzle 6 fixedly dangles in the lower end of lens mount 2 (as shown in the figure).Nozzle 6 with respect to lens 4 be configured to and geometrical condition is designed so that can focus on before jet expansion behind the laser beam scioptics 4, thereby when leaving nozzle 6, scatter.
During use, with workpiece to be cut 10, for example thick shaped steel, be placed under the nozzle 6, and apart from nozzle 6 one segment distances, make the laser beam that defocuses, disperses that leaves jet expansion be ejected into the surperficial position of workpiece, make the temperature at this position bring up to the burning-point of steel and the temperature between the fusing point.Simultaneously, make oxygen or the oxygen-enriched stream of pressure between 7 crust and 8 crust pass through aperture 8 and jet expansion, make itself and steel react and blow down the steel material of fusing, thereby form otch.
Typical case with said method when Fig. 3 shows with 800 watts of laser instrument cutting 43A mild steel cuts characteristic curve.
Cutting performance in the time of can finding out with 800 watts of laser instruments by this figure line, but can infer, also can use the laser instrument that is low to moderate 500 watts of power outputs.
The special benefits of cutting thick shaped steel with said method is:
A) can adopt lower powered laser instrument;
B) workpiece need not preheating;
C) laser instrument is easy to control, so the otch top edge can not producing when resembling the flame cutting
The phenomenon of fusing;
D) this method is fit to the non-directional cutting very much.
Self-evident, the superpower laser of employing 2 to 5 multikilowatts, the thicker workpiece of available said method cutting.
Claims (6)
1. methods of cutting materials is characterized in that comprising the following steps: with the laser beam that defocuses, disperses the surperficial position of material being heated to temperature between its burning-point and the fusing point, and sprays described position with the oxygen that pressurizes or the jet-stream wind of oxygen enrichment.
2. the method for claim 1 is characterized in that, the power output of laser instrument is at least 500 watts.
3. method as claimed in claim 1 or 2 is characterized in that, material to be cut is thick shaped steel.
4. as the described method of 1 to 3 arbitrary claim, it is characterized in that the pressure of described oxygen or oxygen-enriched stream is between 7 crust and 8 crust.
5. as the described method of 1 to 4 arbitrary claim, it is characterized in that, described by position that laser instrument heated greater than position that jet-stream wind sprayed.
6. aforesaid basically methods of cutting materials.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9421526A GB9421526D0 (en) | 1994-10-26 | 1994-10-26 | Methods of cutting materials |
| GB9421526.6 | 1994-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1121453A true CN1121453A (en) | 1996-05-01 |
Family
ID=10763389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95104196A Pending CN1121453A (en) | 1994-10-26 | 1995-04-28 | Methods of cutting materials |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH08118053A (en) |
| KR (1) | KR960013549A (en) |
| CN (1) | CN1121453A (en) |
| GB (1) | GB9421526D0 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310283A (en) * | 2011-06-27 | 2012-01-11 | 胡忠 | Auxiliary air laser oxidizing fusion cutting machine of compressor |
| CN103934582A (en) * | 2014-04-21 | 2014-07-23 | 机械科学研究院哈尔滨焊接研究所 | Laser-flame combination cutting method |
| CN104353933A (en) * | 2014-10-22 | 2015-02-18 | 信阳师范学院 | Laser scribing device for photovoltaic cells |
| CN106903443A (en) * | 2017-02-27 | 2017-06-30 | 无锡洲翔激光设备有限公司 | Avoid being cut by laser carbon steel right angle and acute angle burns the cutting technique at angle |
| CN107695514A (en) * | 2017-09-20 | 2018-02-16 | 华中科技大学 | The coupling head and underwater laser processing unit (plant) of a kind of laser air water coaxial jet |
| EP4215308A1 (en) * | 2022-01-20 | 2023-07-26 | TRUMPF Werkzeugmaschinen SE + Co. KG | Laser cutting method with focal position inside a cutting nozzle having a small opening diameter |
-
1994
- 1994-10-26 GB GB9421526A patent/GB9421526D0/en active Pending
-
1995
- 1995-04-14 JP JP7089049A patent/JPH08118053A/en not_active Withdrawn
- 1995-04-20 KR KR1019950009273A patent/KR960013549A/en not_active Application Discontinuation
- 1995-04-28 CN CN95104196A patent/CN1121453A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310283A (en) * | 2011-06-27 | 2012-01-11 | 胡忠 | Auxiliary air laser oxidizing fusion cutting machine of compressor |
| CN103934582A (en) * | 2014-04-21 | 2014-07-23 | 机械科学研究院哈尔滨焊接研究所 | Laser-flame combination cutting method |
| CN104353933A (en) * | 2014-10-22 | 2015-02-18 | 信阳师范学院 | Laser scribing device for photovoltaic cells |
| CN106903443A (en) * | 2017-02-27 | 2017-06-30 | 无锡洲翔激光设备有限公司 | Avoid being cut by laser carbon steel right angle and acute angle burns the cutting technique at angle |
| CN107695514A (en) * | 2017-09-20 | 2018-02-16 | 华中科技大学 | The coupling head and underwater laser processing unit (plant) of a kind of laser air water coaxial jet |
| EP4215308A1 (en) * | 2022-01-20 | 2023-07-26 | TRUMPF Werkzeugmaschinen SE + Co. KG | Laser cutting method with focal position inside a cutting nozzle having a small opening diameter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08118053A (en) | 1996-05-14 |
| KR960013549A (en) | 1996-05-22 |
| GB9421526D0 (en) | 1994-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |