CN116618750A - Improve big rod hot saw steel sheet of saw cut of tip quality - Google Patents
Improve big rod hot saw steel sheet of saw cut of tip quality Download PDFInfo
- Publication number
- CN116618750A CN116618750A CN202310832000.7A CN202310832000A CN116618750A CN 116618750 A CN116618750 A CN 116618750A CN 202310832000 A CN202310832000 A CN 202310832000A CN 116618750 A CN116618750 A CN 116618750A
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- CN
- China
- Prior art keywords
- saw
- sawn
- steel sheet
- saw bit
- saw blade
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 claims description 17
- 230000006872 improvement Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 230000008719 thickening Effects 0.000 abstract description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000282461 Canis lupus Species 0.000 description 1
- 208000004188 Tooth Wear Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 206010006514 bruxism Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
The invention discloses a sawing large bar hot sawing steel sheet capable of improving end quality, and relates to the technical field of steel bar processing equipment. Comprises a saw blade body; the saw blade body is discoid structure, and saw blade body center is equipped with the mounting hole, and the mounting hole diameter is 550mm, and the mounting hole is used for the suit on central pressure disk. Through improving the thickness of saw bit in processing area and installation area, the bulk strength of saw bit has been promoted, saw bit crack degree alleviates greatly, can carry out repeated repair and utilization many times, the effectual spare part that has practiced thrift consumes, the thickening structure of setting can promote the stability of whole saw bit in processing operation in-process, the vibrations that the saw bit received in the cutting process are reduced, the saw bit operates steadily, saw cut the terminal surface and level and smooth, steel extranal packing quality is effectively improved, the bearing capacity of saw bit is promoted simultaneously, reduce the influence of cooling water flow to the saw bit, through promoting sawtooth hardness, the life of saw bit has been prolonged, reduce the saw bit and change the number of times, and production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of steel bar processing equipment, in particular to a sawing large-bar hot sawing steel sheet capable of improving end quality.
Background
A technique for cutting with thermal energy. The hot sawing machine is an important auxiliary device in a hot rolling workshop, and the quality of the design of the hot sawing machine directly influences the quality of sawing steel. The hot sawing machine is the most used equipment in hot rolling workshops, and is generally arranged on a production line behind a rolling mill, saw-cuts special-shaped section rolled pieces at a high temperature state, and is used for cutting heads, tails and fixed-length lengths of single or whole-bundle rolled pieces. Its main advantages are smooth saw cutting surface, and high precision of cut position. The hot sawing machine is a cutting device widely used in the rolling production line of section steel in metallurgical plants, especially section steel, and is generally installed on the production line behind a rolling mill. The rolling mill is mainly used for cutting the head, the tail and the fixed length of a rolled piece rolled by the rolling mill. Compared with other cutting equipment, the hot sawing machine has the advantages of simple equipment, light weight and high production efficiency. In many cases, the throughput of the entire mill shop is often affected by the limitations of the hot saw throughput. The main mechanism of the hot sawing machine comprises three parts: a saw blade transmission mechanism, a saw blade feeding mechanism and a saw machine transverse moving mechanism for adjusting the fixed length. The hot sawing machine saw cuts the steel bar through the metal saw blade.
The existing metal saw blade has the problems that:
(1) The metal sheet has serious cracks and high potential safety hazard;
the hot sawing machine uses a saw blade with phi 2000 multiplied by 12mm, the sawing temperature is above 780 ℃, the saw blade is found to have serious root cracks in the use process, the maximum length of the crack can reach 50mm, the saw blade can not be repaired and used any more, the waste is large, and the crack is large, so that the explosion is easy to cause, and the danger is large;
(2) The vibration of the sheet body is large, and the end face of the saw cut steel is not neat;
the strength of the sheet body is low, the sawing process is not stable enough, so that step saw marks appear on the end face of the sawn steel, and the sheet body is seriously buckled, so that the external packing image of the bar is greatly influenced;
(3) The wear resistance of the tooth end is poor, and the sawing quantity is low;
the hardness of the tooth end of the original saw blade is HRC55-HRC 63, the wear resistance is poor in the production process, and the tooth tip is almost flattened when the sawing quantity is about 700 tons.
Disclosure of Invention
The invention provides a sawing large bar hot-sawing steel sheet for improving the end quality, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention adopts the following technical scheme: a sawing large bar hot sawing steel sheet for improving end quality comprises a saw blade body;
the saw blade body is of a disc-shaped structure, a mounting hole is formed in the center of the saw blade body, the diameter of the mounting hole is 550mm, and the mounting hole is used for being sleeved on the central pressure plate.
The technical scheme of the invention is further improved as follows: the saw blade body sequentially comprises a mounting part, a cooling part and a sawtooth part from inside to outside, wherein the mounting part, the cooling part and the sawtooth part are all of circular ring structures.
The technical scheme of the invention is further improved as follows: the diameter of the installation part is 550-800 mm, and the thickness of the installation part is 13mm.
The technical scheme of the invention is further improved as follows: the diameter of the cooling part is 1050mm-1700mm, and the thickness of the cooling part is 12mm.
The technical scheme of the invention is further improved as follows: the diameter of the sawtooth part is 1750mm-2000mm, and the thickness of the sawtooth part is 13mm.
The technical scheme of the invention is further improved as follows: the two ends of the cooling part are connected with the mounting part and the sawtooth part through inclined planes.
The technical scheme of the invention is further improved as follows: the number of the saw teeth on the saw tooth part is 330, and the interval between the saw teeth is 19.04mm.
The technical scheme of the invention is further improved as follows: the front angle of the saw teeth is 10 degrees, and the wedge angle of the saw teeth is 60 degrees.
By adopting the technical scheme, compared with the prior art, the invention has the following technical progress:
1. the invention provides a sawing large bar hot saw steel sheet for improving the end quality, which improves the overall strength of a saw blade by improving the thickness of the saw blade in a processing area and an installation area, greatly reduces the crack degree of the saw blade, can be repeatedly repaired and utilized for many times, and effectively saves the consumption of spare parts.
2. The invention provides a sawing large bar hot-sawing steel sheet for improving the end quality, which can improve the stability of an integral saw blade in the processing operation process through a thickening structure, reduce the vibration suffered by the saw blade in the cutting process, ensure that the saw blade operates stably, ensure that the sawing end surface is flat and smooth, effectively improve the steel external packing quality, improve the bearing capacity of the saw blade and reduce the influence of cooling water flow on the saw blade.
3. The invention provides a sawing large bar hot saw steel sheet for improving the end quality, which prolongs the service life of a saw blade, reduces the replacement times of the saw blade and improves the production efficiency by improving the hardness of saw teeth.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of a prior art saw blade;
FIG. 2 is a schematic cross-sectional view of a blade body of the present invention;
FIG. 3 is a schematic view of a sawtooth structure according to the present invention;
FIG. 4 is a schematic diagram of a conventional saw blade tooling;
FIG. 5 is a schematic view of a finished saw blade of the present invention;
in the figure: 1. a saw blade body; 2. a mounting hole; 11. a mounting part; 12. a cooling unit; 13. a serration part; 131. saw teeth.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Saw cut large bar hot saw steel sheet with improved end quality, please refer to fig. 1-5:
comprising a saw blade body 1; the saw blade body 1 is of a disc-shaped structure, the center of the saw blade body 1 is provided with a mounting hole 2, the diameter of the mounting hole 2 is 550mm, and the mounting hole 2 is used for being sleeved on a central pressure plate; the saw blade body 1 sequentially comprises a mounting part 11, a cooling part 12 and a sawtooth part 13 from inside to outside, wherein the mounting part 11, the cooling part 12 and the sawtooth part 13 are all of circular ring structures; the diameter of the mounting part 11 is 550mm-800mm, and the thickness of the mounting part 11 is 13mm; the diameter of the cooling part 12 is 1050mm-1700mm, and the thickness of the cooling part 12 is 12mm; the diameter of the sawtooth part 13 is 1750mm-2000mm, and the thickness of the sawtooth part 13 is 13mm; the two ends of the cooling part 12 are connected with the mounting part 11 and the sawtooth part 13 through inclined planes;
if the thickness of the saw blade is too large, sawing power consumption is increased, metal consumption is increased, workshop cost and yield are affected, but if the thickness of the saw blade is too small, the strength of the saw blade is reduced, and deformation of the saw blade during sawing is increased, so that the service life of the saw blade is reduced, and the thickness is selected to be 13mm according to empirical data;
the number of the saw teeth 131 on the saw teeth part 13 is 330, and the interval between the saw teeth 131 is 19.04mm; the front angle of the saw teeth 131 is 10 degrees, and the wedge angle of the saw teeth 131 is 60 degrees; the sawtooth 131 strengthens the hardness of the tooth tip through heat treatment, and the hardness of the tooth tip of the sawtooth 131 is HRC56-HRC63;
the reasonable saw tooth 131 shape can reduce the energy consumption during sawing and prolong the service life of the saw tooth 131 under the condition of ensuring the strength of the saw tooth 131, and a general hot sawing machine adopts a wolf tooth type, a mouse tooth type and a triangle saw tooth 131, because the mouse tooth type is easy to repair grinding teeth, the saw tooth 131 adopts a large positive front angle due to plastic deformation of a hot rolled piece during sawing, and the saw tooth 131 is changed into 330 teeth according to empirical data and a production process comparison experiment because the sawing temperature of steel is about 800 ℃;
the water pressure of the cooling saw blade is increased from 0.3Pa to 0.8Pa in the processing process, so that the saw blade can be effectively and rapidly cooled, scrap iron attached between teeth can be effectively removed, the service life of the saw blade is prolonged, and the thickened saw blade can effectively bear the increased water pressure intensity;
table 1 shows the processing comparisons between conventional and modified saw blades:
as can be seen from the table and fig. 4 and 5, the improved saw blade in this solution is much stronger than the existing saw blade, both in terms of sawing tonnage and end mass;
the saw blade body 1 is mainly calculated and improved again from the aspects of saw tooth shape, number of saw teeth, saw blade thickness, sheet body surface hardness, sawing operation and the like, the reasonable saw tooth shape can improve saw tooth wear resistance, energy consumption during sawing is reduced, the saw blade thickness has a large influence on the strength of the saw blade, sawing power consumption is reduced under the condition of ensuring strength, namely proper saw blade thickness is selected, in addition, the circumferential speed and sawing speed are specifically considered to be suitable, if the circumferential speed is too high and the sawing speed is too low, the cutting efficiency is reduced, tooth tip wear is aggravated, and if the circumferential speed is too low, sawing resistance is increased due to the fact that the sawing speed is too high, the cutting efficiency is influenced, and therefore, all aspects of factors are required to be comprehensively considered for optimization and improvement.
Claims (8)
1. The utility model provides a big rod hot saw steel sheet of saw cut of improvement tip quality, includes saw bit body (1), its characterized in that: the saw blade body (1) is of a disc-shaped structure, a mounting hole (2) is formed in the center of the saw blade body (1), the diameter of the mounting hole (2) is 550mm, and the mounting hole (2) is used for being sleeved on a central pressing disc.
2. A sawn large bar hot sawn steel sheet with improved end quality as claimed in claim 1, wherein: the saw blade body (1) sequentially comprises a mounting part (11), a cooling part (12) and a sawtooth part (13) from inside to outside, wherein the mounting part (11), the cooling part (12) and the sawtooth part (13) are all of circular ring structures.
3. A sawn large bar hot sawn steel sheet with improved end quality as claimed in claim 2, wherein: the diameter of the mounting part (11) is 550mm-800mm, and the thickness of the mounting part (11) is 13mm.
4. A sawn large bar hot sawn steel sheet with improved end quality as claimed in claim 2, wherein: the diameter of the cooling part (12) is 1050mm-1700mm, and the thickness of the cooling part (12) is 12mm.
5. A sawn large bar hot sawn steel sheet with improved end quality as claimed in claim 2, wherein: the diameter of the sawtooth part (13) is 1750mm-2000mm, and the thickness of the sawtooth part (13) is 13mm.
6. A sawn large bar hot sawn steel sheet with improved end quality as claimed in claim 2, wherein: the two ends of the cooling part (12) are connected with the mounting part (11) and the sawtooth part (13) through inclined planes.
7. A sawn large bar hot sawn steel sheet with improved end quality as claimed in claim 2, wherein: the number of the saw teeth (131) on the saw tooth part (13) is 330, and the interval between the saw teeth (131) is 19.04mm.
8. A sawn large bar hot sawn steel sheet with improved end quality as in claim 7, wherein: the front angle of the saw tooth (131) is 10 degrees, and the wedge angle of the saw tooth (131) is 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310832000.7A CN116618750A (en) | 2023-07-07 | 2023-07-07 | Improve big rod hot saw steel sheet of saw cut of tip quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310832000.7A CN116618750A (en) | 2023-07-07 | 2023-07-07 | Improve big rod hot saw steel sheet of saw cut of tip quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116618750A true CN116618750A (en) | 2023-08-22 |
Family
ID=87592344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310832000.7A Pending CN116618750A (en) | 2023-07-07 | 2023-07-07 | Improve big rod hot saw steel sheet of saw cut of tip quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116618750A (en) |
-
2023
- 2023-07-07 CN CN202310832000.7A patent/CN116618750A/en active Pending
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