CN105710484A - Flame cutting process - Google Patents
Flame cutting process Download PDFInfo
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- CN105710484A CN105710484A CN201410723717.9A CN201410723717A CN105710484A CN 105710484 A CN105710484 A CN 105710484A CN 201410723717 A CN201410723717 A CN 201410723717A CN 105710484 A CN105710484 A CN 105710484A
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Abstract
The invention discloses a flame cutting process. The flame cutting process comprises the following steps that 1, construction preparation is conducted; and 2, the cutting operation process is conducted, specifically, 2.6, in order to prevent gas cutting deformation, the following aspects should be noticed in the operation process, 2.6.1, when workpieces in different sizes are cut on a steel plate, the small-size workpieces should be cut at first, and then the large-size workpieces are cut; 2.6.2, when a narrow long-strip-shaped plate is cut, the parts, with the length being 50 mm, of the two ends are reserved and not cut, and after a long side is cut, the narrow long-strip-shaped plate is cut, or a multi-cutting-torch symmetrical cutting method is adopted; and 2.6.3, when a straight strip is cut, it should be noticed that the strength of the flame of all cutting nozzles should be consistent, otherwise sidewise bending is prone to being produced. According to the flame cutting process, the process arrangement is reasonable and coordinated, the rejection rate can be effectively decreased, and the product quality is high.
Description
Technical field
The present invention relates to flame cutting technique.
Background technology
There is processing step phenomenon inharmonious, irrational in existing flame cutting technique, produces sometimes to repeat to process or excess processes, have a strong impact on product quality, and percent defective is higher, require higher to employee's operant skill, cause product cost higher.
Additionally existing flame cutting technique processing step is tediously long, and the distribution of each operation exists many irrational places.
Summary of the invention
In order to realize the purpose of the present invention, the present invention provides the flame cutting technique that a kind of procedure arrangement is reasonable, coordinate.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of flame cutting technique, comprises the steps:
1), preparation of construction:
1.1) material requirements:
1.1.1) should inspecting for acceptance qualified through quality department for the steel plate of cutting stock, its indices meets the respective specified of national regulation；
1.1.2) steel plate should check the trade mark of steel plate, thickness and surface quality before blanking, and the surface appearance erosion point degree of depth such as steel exceedes the position of GB steel plate minus deviation and forbidden for product；The spot corrosion of little area is when not thinning design thickness, it is possible to adopt soldering polishing until qualified；
1.1.3) trade mark of steel plate, specification and surface quality situation must be checked when blanking, just can blanking after confirmation undoubtedly；
2), cutting operation technique:
2.1) when carrying out surface trimming, hang steel plate to gas cutting platform, the range difference of the monolateral two ends of steel plate and guide rail should be adjusted within the scope of 5mm；When carrying out semi-automatic cutting, guide rail should be placed in the plane of cut steel plate, then cutting machine be put down gently on guide rail；Make the side of cutting torch towards operator, select cutting torch according to the thickness of steel plate, adjust the straight degree of cutting and cutting speed；
2.2) difference according to surface trimming and semi-automatic cutting mode, adjusts the distance of each burning torch, it is determined that drag, and considers cutting gap compensation；In cutting process, the size and Orientation at burning torch inclination angle is mainly determined with steel plate thickness；When carrying out slab gas cutting, cutting torch keeps vertical with surface of the work, and after whole section cuts through, mobile cutting torch, proceeds to normal gas cutting, should slightly slow down when gas cutting will be reached home, make otch bottom cut off completely；
2.3) cutting parameter is adjusted according to thickness of slab, cutting parameter includes the energy etc. of cutting torch model, oxygen pressure, cutting speed and pre-thermal-flame, the main type according to gas cutting machinery of selection of technological parameter and the steel plate thickness that can cut, to the steel plate not cut, answer the similar steel plate of test tapping, determine cutting parameter, check simultaneously and cut nozzle gas patency；
2.4) remove the dirt of steel surface, oils and fats before gas cutting, and reserve certain space below, be beneficial to the blowout of slag；During gas cutting, the movement of cutting torch should remain a constant speed, and is advisable with 2 ~ 5mm in cutter member surface distance flame core tip, and distance too closely can make cutting shoulder along fusing, too remote shortage of heat, easily makes cutting interrupt；
2.5) when carrying out thick plates cutting, pre-thermal-flame wants big, and gas cutting air-flow length is beyond the 1/3 of thickness of workpiece；Cutting torch about becomes 10 ° ~ 20 ° inclination angles with surface of the work, makes part edge thermally equivalent；
2.6) in order to prevent gas cutting from deforming, it should be noted that the following aspects in operating process:
When 2.6.1) cutting various sizes of workpiece on steel plate, should first cut smallclothes, after cut big part；
2.6.2) cutting of long narrow stripe board, length two ends reserve 50mm and do not cut, and are cutting off behind complete long limit to be cut, or the method adopting the symmetrical cutting of many cutting torches；
2.6.3) it should be noted that the flame power of each cutting cutting torch should be consistent during vertical bar cutting, side sway otherwise it is easily generated.
Procedure arrangement of the present invention is reasonable, coordination, it is possible to be effectively reduced percent defective and product quality is high.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
A kind of flame cutting technique, comprises the steps:
1), preparation of construction:
1.1) material requirements:
1.1.1) should inspecting for acceptance qualified through quality department for the steel plate of cutting stock, its indices meets the respective specified of national regulation；
1.1.2) steel plate should check the trade mark of steel plate, thickness and surface quality before blanking, and the surface appearance erosion point degree of depth such as steel exceedes the position of GB steel plate minus deviation and forbidden for product；The spot corrosion of little area is when not thinning design thickness, it is possible to adopt soldering polishing until qualified；
1.1.3) trade mark of steel plate, specification and surface quality situation must be checked when blanking, just can blanking after confirmation undoubtedly；
2), cutting operation technique:
2.1) when carrying out surface trimming, hang steel plate to gas cutting platform, the range difference of the monolateral two ends of steel plate and guide rail should be adjusted within the scope of 5mm；When carrying out semi-automatic cutting, guide rail should be placed in the plane of cut steel plate, then cutting machine be put down gently on guide rail；Make the side of cutting torch towards operator, select cutting torch according to the thickness of steel plate, adjust the straight degree of cutting and cutting speed；
2.2) difference according to surface trimming and semi-automatic cutting mode, adjusts the distance of each burning torch, it is determined that drag, and considers cutting gap compensation；In cutting process, the size and Orientation at burning torch inclination angle is mainly determined with steel plate thickness；When carrying out slab gas cutting, cutting torch keeps vertical with surface of the work, and after whole section cuts through, mobile cutting torch, proceeds to normal gas cutting, should slightly slow down when gas cutting will be reached home, make otch bottom cut off completely；
2.3) cutting parameter is adjusted according to thickness of slab, cutting parameter includes the energy etc. of cutting torch model, oxygen pressure, cutting speed and pre-thermal-flame, the main type according to gas cutting machinery of selection of technological parameter and the steel plate thickness that can cut, to the steel plate not cut, answer the similar steel plate of test tapping, determine cutting parameter, check simultaneously and cut nozzle gas patency；
2.4) remove the dirt of steel surface, oils and fats before gas cutting, and reserve certain space below, be beneficial to the blowout of slag；During gas cutting, the movement of cutting torch should remain a constant speed, and is advisable with 2 ~ 5mm in cutter member surface distance flame core tip, and distance too closely can make cutting shoulder along fusing, too remote shortage of heat, easily makes cutting interrupt；
2.5) when carrying out thick plates cutting, pre-thermal-flame wants big, and gas cutting air-flow length is beyond the 1/3 of thickness of workpiece；Cutting torch about becomes 10 ° ~ 20 ° inclination angles with surface of the work, makes part edge thermally equivalent；
2.6) in order to prevent gas cutting from deforming, it should be noted that the following aspects in operating process:
When 2.6.1) cutting various sizes of workpiece on steel plate, should first cut smallclothes, after cut big part；
2.6.2) cutting of long narrow stripe board, length two ends reserve 50mm and do not cut, and are cutting off behind complete long limit to be cut, or the method adopting the symmetrical cutting of many cutting torches；
2.6.3) it should be noted that the flame power of each cutting cutting torch should be consistent during vertical bar cutting, side sway otherwise it is easily generated.
Claims (1)
1. a flame cutting technique, is characterized in that: comprise the steps:
1), preparation of construction:
1.1) material requirements:
1.1.1) should inspecting for acceptance qualified through quality department for the steel plate of cutting stock, its indices meets the respective specified of national regulation；
1.1.2) steel plate should check the trade mark of steel plate, thickness and surface quality before blanking, and the surface appearance erosion point degree of depth such as steel exceedes the position of GB steel plate minus deviation and forbidden for product；The spot corrosion of little area is when not thinning design thickness, it is possible to adopt soldering polishing until qualified；
1.1.3) trade mark of steel plate, specification and surface quality situation must be checked when blanking, just can blanking after confirmation undoubtedly；
2), cutting operation technique:
2.1) when carrying out surface trimming, hang steel plate to gas cutting platform, the range difference of the monolateral two ends of steel plate and guide rail should be adjusted within the scope of 5mm；When carrying out semi-automatic cutting, guide rail should be placed in the plane of cut steel plate, then cutting machine be put down gently on guide rail；Make the side of cutting torch towards operator, select cutting torch according to the thickness of steel plate, adjust the straight degree of cutting and cutting speed；
2.2) difference according to surface trimming and semi-automatic cutting mode, adjusts the distance of each burning torch, it is determined that drag, and considers cutting gap compensation；In cutting process, the size and Orientation at burning torch inclination angle is mainly determined with steel plate thickness；When carrying out slab gas cutting, cutting torch keeps vertical with surface of the work, and after whole section cuts through, mobile cutting torch, proceeds to normal gas cutting, should slightly slow down when gas cutting will be reached home, make otch bottom cut off completely；
2.3) cutting parameter is adjusted according to thickness of slab, cutting parameter includes the energy etc. of cutting torch model, oxygen pressure, cutting speed and pre-thermal-flame, the main type according to gas cutting machinery of selection of technological parameter and the steel plate thickness that can cut, to the steel plate not cut, answer the similar steel plate of test tapping, determine cutting parameter, check simultaneously and cut nozzle gas patency；
2.4) remove the dirt of steel surface, oils and fats before gas cutting, and reserve certain space below, be beneficial to the blowout of slag；During gas cutting, the movement of cutting torch should remain a constant speed, and is advisable with 2 ~ 5mm in cutter member surface distance flame core tip, and distance too closely can make cutting shoulder along fusing, too remote shortage of heat, easily makes cutting interrupt；
2.5) when carrying out thick plates cutting, pre-thermal-flame wants big, and gas cutting air-flow length is beyond the 1/3 of thickness of workpiece；Cutting torch about becomes 10 ° ~ 20 ° inclination angles with surface of the work, makes part edge thermally equivalent；
2.6) in order to prevent gas cutting from deforming, it should be noted that the following aspects in operating process:
When 2.6.1) cutting various sizes of workpiece on steel plate, should first cut smallclothes, after cut big part；
2.6.2) cutting of long narrow stripe board, length two ends reserve 50mm and do not cut, and are cutting off behind complete long limit to be cut, or the method adopting the symmetrical cutting of many cutting torches；
2.6.3) it should be noted that the flame power of each cutting cutting torch should be consistent during vertical bar cutting, side sway otherwise it is easily generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723717.9A CN105710484A (en) | 2014-12-04 | 2014-12-04 | Flame cutting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723717.9A CN105710484A (en) | 2014-12-04 | 2014-12-04 | Flame cutting process |
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| CN105710484A true CN105710484A (en) | 2016-06-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312238A (en) * | 2016-08-31 | 2017-01-11 | 安徽景隆金属材料有限公司 | Flame cutting method for thick steel plate |
| CN106825844A (en) * | 2017-03-10 | 2017-06-13 | 郑州煤矿机械集团股份有限公司 | The elongated cage bar groove method for hot cutting of hydraulic support for low coal seam back timber |
| CN108480818A (en) * | 2018-03-26 | 2018-09-04 | 四川汇源钢建装配建筑有限公司 | A kind of flame cutting method and steel part of ultra-thick steel plates |
| CN108655532A (en) * | 2017-03-30 | 2018-10-16 | 中国石油天然气股份有限公司 | Cutting method of chromium-molybdenum stainless steel composite layer |
| CN109014427A (en) * | 2018-09-27 | 2018-12-18 | 浙江精工钢结构集团有限公司 | A kind of vertical bar blanking groove synchronous cutting technique |
| CN111673231A (en) * | 2020-05-14 | 2020-09-18 | 平顶山平煤机煤矿机械装备有限公司 | Processing method for blanking hydraulic support plate by using numerical control flame cutting machine |
| CN112518089A (en) * | 2019-09-18 | 2021-03-19 | 扬州明弘机械有限公司 | Composite steel plate processing method and plasma cutting machine |
-
2014
- 2014-12-04 CN CN201410723717.9A patent/CN105710484A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312238A (en) * | 2016-08-31 | 2017-01-11 | 安徽景隆金属材料有限公司 | Flame cutting method for thick steel plate |
| CN106312238B (en) * | 2016-08-31 | 2018-10-02 | 安徽景隆金属材料有限公司 | A kind of steel plate flame cutting method |
| CN106825844A (en) * | 2017-03-10 | 2017-06-13 | 郑州煤矿机械集团股份有限公司 | The elongated cage bar groove method for hot cutting of hydraulic support for low coal seam back timber |
| CN108655532A (en) * | 2017-03-30 | 2018-10-16 | 中国石油天然气股份有限公司 | Cutting method of chromium-molybdenum stainless steel composite layer |
| CN108480818A (en) * | 2018-03-26 | 2018-09-04 | 四川汇源钢建装配建筑有限公司 | A kind of flame cutting method and steel part of ultra-thick steel plates |
| CN109014427A (en) * | 2018-09-27 | 2018-12-18 | 浙江精工钢结构集团有限公司 | A kind of vertical bar blanking groove synchronous cutting technique |
| CN112518089A (en) * | 2019-09-18 | 2021-03-19 | 扬州明弘机械有限公司 | Composite steel plate processing method and plasma cutting machine |
| CN111673231A (en) * | 2020-05-14 | 2020-09-18 | 平顶山平煤机煤矿机械装备有限公司 | Processing method for blanking hydraulic support plate by using numerical control flame cutting machine |
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Application publication date: 20160629 |