High-speed cutting process for large-diameter thick-wall steel pipe

Abstract

The invention belongs to the technical field of cutting processes, and discloses a high-speed cutting process for a large-diameter thick-wall steel pipe, and the high-speed cutting process specifically comprises the following steps: step 1, equipment preparation: proper cutting equipment for the large-diameter thick-wall steel pipe is selected, and the cutting equipment comprises three groups of circular saw blades which are distributed at equal angles; 2, preparing a pipe; step 3, setting parameters; fourthly, high-speed cutting is conducted; and step 5, performing subsequent treatment. Three sets of saw blades are combined to cut the steel pipe at the same time, the steel pipe does not rotate during cutting, the cutting depth of the cutting method is uniform and stable, the steel pipe is stable and not prone to shaking during cutting, and compared with a traditional cutting technology, the technology can greatly improve the cutting efficiency, the cutting period is remarkably shortened, the cutting face is flat, and the production efficiency is improved. And through the arrangement of the feeding system and the discharging mechanism, automatic cutting is achieved, labor force is liberated, the workload is relieved, and the overall productivity of a production line is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting technology, and in particular relates to a high-speed cutting technology for large-diameter thick-walled steel pipes. Background Art

[0002] Large-diameter thick-walled steel pipes refer to steel pipes with an outer diameter usually exceeding 325mm and a wall thickness exceeding 20mm. They are mainly used in multiple industrial fields, such as machinery manufacturing, automobile manufacturing, energy industry, petrochemical industry, and municipal construction. In the field of machinery manufacturing, it is often used in key components of large machine tools, engineering machinery, and shipbuilding equipment to ensure the strength and stability of the equipment. In the steel pipe processing industry, steel pipe sawing machines play a pivotal role. They can not only improve production efficiency, but also ensure cutting accuracy and product quality. They are an indispensable and important tool in the modern steel pipe manufacturing industry.

[0003] At present, when processing such large-diameter thick-walled steel pipes, the steel pipes are usually positioned and cut by cutting saws. However, in actual use, although the method of cutting the steel pipes by a single saw blade is simple and light, when facing such large-diameter and thick-walled steel pipes, the cutting time of a single saw blade is long and it is impossible to cut at high speed. At the same time, the shear force applied by the saw blade during the cutting process is very large in an instant, and the saw blade will squeeze the cutting part of the steel pipe during cutting, which can easily lead to uneven force on the local part of the steel pipe, partial deformation, and more burrs at the cutting part, which affects the quality of the steel pipe product. At the same time, a large amount of labor is required to make up for the subsequent grinding and deburring stage, so it needs to be improved and optimized. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed cutting process for large-diameter thick-walled steel pipes to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a high-speed cutting process for large-diameter thick-walled steel pipes, the specific process of the high-speed cutting process is:

[0006] Step 1: Equipment preparation: Select suitable cutting equipment for large-diameter thick-walled steel pipes. The cutting equipment includes three sets of circular saw blades with equal angles, and the saw blades can rotate 360 ​​degrees synchronously and move toward the cutting axis.

[0007] Step 2: pipe preparation: after cleaning the surface of the pipe, place the pipe on the cutting equipment through a clamp;

[0008] Step 3: Parameter setting: adjust the cutting program according to the diameter and wall thickness of the steel pipe;

[0009] Step 4: high-speed cutting, the steel pipe is fed into the feeding system, and the three sets of saw blades move inward at the same time to cut the steel pipe;

[0010] Step 5: Follow-up processing: unloading after cutting is completed, and grinding and cleaning operations are performed.

[0011] Preferably, the cutting device further comprises a cooling system, a feeding system and a positioner;

[0012] Among them, the cooling system is composed of a water tank, a water pump and a nozzle, and the nozzle faces the cutting axis; the feeding system is located on the right side of the cutting equipment, and the positioner is located on the upper and lower, left and right, front and back sides of the cutting axis.

[0013] Preferably, in step 4, the specific steps of high-speed cutting are:

[0014] A1, first locate the cutting length of the steel pipe, and then send the steel pipe between the three sets of saw blades through the feeding system;

[0015] A2, after ensuring that the cutting length meets the requirements, the feeding system stops and the three sets of saw blades start to rotate synchronously;

[0016] A3, three sets of saw blades rotate 360 ​​degrees and move inwards at the same time, cutting the steel pipe step by step to ensure uniform and stable cutting depth;

[0017] A4, During cutting, the cooling system sprays water on the three sets of saw blades to cool them down and reduce dust;

[0018] A5, after the steel pipe cutting is completed, the three sets of saw blades stop rotating and reset, completing the cutting operation.

[0019] Preferably, the feeding system is responsible for fixing the steel pipe and pushing the steel pipe to the cutting location after fixing is completed.

[0020] Preferably, after the unloading in step 5 is completed, the cut edge of the steel pipe is processed by a grinder to remove burrs and clean up dirt and residues generated during the cutting process.

[0021] Preferably, during cutting, the three groups of saw blades need to ensure the same rotation speed and the same moving speed, so as to further ensure uniform cutting.

[0022] Preferably, the cutting device further comprises a material receiving mechanism, and one end of the steel pipe falls into the material receiving mechanism after cutting is completed to be automatically collected.

[0023] Preferably, when the material receiving mechanism completes the material receiving, the feeding system starts feeding and sawing.

[0024] Preferably, in step 4, the three sets of saw blades start to decelerate when they move to a distance of 10 mm from the outer surface of the steel pipe, and the rotation speed remains unchanged.

[0025] Preferably, a fence is provided at the cutting axis of the cutting device, and the fence is made of iron sheet with a thickness of 1 mm.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. By combining three sets of saw blades to cut the steel pipe at the same time, and the steel pipe does not rotate during cutting, the cutting depth of this cutting method is uniform and stable, and the steel pipe is stable and not easy to shake during cutting. Compared with the traditional cutting process, this process can greatly improve the cutting efficiency, significantly shorten the cutting cycle, and make the cut surface smooth. Through the setting of the feeding system and the unloading mechanism, automatic cutting is realized, which liberates labor, reduces the workload, improves the overall production capacity of the production line, and the cutting efficiency can be increased by more than 100%.

[0028] 2. The present invention arranges three sets of saw blades so that the steel pipe is subjected to shear forces from three directions at the same time during cutting. Due to the stability and consistency of the three sets of saw blades, the deformation of the steel pipe during cutting is reduced. Compared with the traditional cutting method, this process can disperse the internal stress of the steel pipe during cutting, avoid deformation, effectively suppress the large burrs caused by deformation, make the cut surface smooth, reduce the work intensity, and optimize the cutting effect.

[0029] 3. The present invention uses three sets of saw blades for cutting, which shortens the total working time of a single saw blade. Compared with the traditional cutting method, this process can use three sets of saw blades to perform high-speed cutting when facing steel pipes with large diameter and thickness, thereby improving work efficiency. At the same time, the cutting time of each set of saw blades is shortened, effectively avoiding deformation and overheating of the saw blades caused by long-term cutting, reducing economic losses, and protecting cutting tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a high-speed cutting process flow chart of the present invention;

[0031] Figure 2 This is an operation flow chart of the high-speed cutting stage of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1 to Figure 2 As shown, the embodiment of the present invention provides a high-speed cutting process for a large-diameter thick-walled steel pipe. The specific process of the high-speed cutting process is as follows:

[0034] Step 1: Equipment preparation: Select suitable cutting equipment for large-diameter thick-walled steel pipes. The cutting equipment includes three sets of circular saw blades with equal angles, and the saw blades can rotate 360 ​​degrees synchronously and move toward the cutting axis.

[0035] Through the synchronous rotation and displacement of three sets of saw blades, the pipe can be cut synchronously from three locations, and the steel pipe does not rotate during cutting, which is more stable. Compared with traditional mechanical cutting, this cutting process significantly shortens the cutting cycle and improves the overall production capacity of the production line.

[0036] Step 2: pipe preparation: after cleaning the surface of the pipe, place the pipe on the cutting equipment through a clamp;

[0037] By cleaning the pipe surface, foreign matter is avoided and the saw blade is protected, while the cutting quality is improved.

[0038] Step 3: Parameter setting: adjust the cutting program according to the diameter and wall thickness of the steel pipe;

[0039] The setting parameters need to be adjusted according to the material, thickness and cutting requirements of the steel pipe, and the cutting speed is 200-300mm / minute.

[0040] Step 4: high-speed cutting, the steel pipe is fed into the feeding system, and the three sets of saw blades move inward at the same time to cut the steel pipe;

[0041] According to the diameter of the steel pipe, the initial positions of the three sets of saw blades are set to ensure simultaneous cutting.

[0042] Step 5: Follow-up processing: unloading after cutting is completed, and grinding and cleaning operations are performed.

[0043] After grinding, burrs are removed, making the cutting surface smoother and ensuring product quality.

[0044] By combining three sets of saw blades to cut the steel pipe at the same time, the cutting depth of this cutting method is uniform and stable, and the steel pipe is stable and not easy to shake during cutting. Compared with the traditional cutting process, this process can greatly improve the cutting efficiency and significantly shorten the cutting cycle. Through the setting of the feeding system and unloading mechanism, automatic cutting is realized, which liberates labor, reduces the workload and improves the overall production capacity of the production line.

[0045] Wherein, the cutting equipment also includes a cooling system, a feeding system and a positioner;

[0046] Among them, the cooling system is composed of a water tank, a water pump and a nozzle, and the nozzle faces the cutting axis; the feeding system is located on the right side of the cutting equipment, and the positioner is located on the upper and lower, left and right, front and back sides of the cutting axis.

[0047] In the cooling system, the nozzle faces the cutting axis and is responsible for spraying water to cool down and reduce dust, preventing the saw blade from overheating, while the feeding system pushes the steel pipe to the cutting point.

[0048] By setting up three sets of saw blades, the steel pipe is subjected to shear forces from three directions at the same time when being cut, and due to the stability and consistency of the three sets of saw blades, the deformation of the steel pipe during cutting is reduced. Compared with the traditional cutting method, this process can disperse the internal stress of the steel pipe during cutting, avoid deformation, effectively suppress the large burrs caused by deformation, reduce work intensity, and optimize the cutting effect.

[0049] Among them, in step 4, the specific steps of high-speed cutting are:

[0050] A1, first locate the cutting length of the steel pipe, and then send the steel pipe between the three sets of saw blades through the feeding system;

[0051] While positioning the cutting length of the steel pipe, it is necessary to ensure that the center of the steel pipe is located at the cutting axis of the cutting equipment to ensure stability during cutting.

[0052] A2, after ensuring that the cutting length meets the requirements, the feeding system stops and the three sets of saw blades start to rotate synchronously;

[0053] A3, three sets of saw blades rotate and move inwards at the same time, cutting the steel pipe step by step to ensure uniform and stable cutting depth;

[0054] Three sets of saw blades cut at the same time, so that the cutting surface of the steel pipe is evenly stressed and it is not easy to produce large burrs and deformation.

[0055] A4, During cutting, the cooling system sprays water on the three sets of saw blades to cool them down and reduce dust;

[0056] The water spray cools the saw blade and also suppresses the chips produced during cutting.

[0057] A5, after the steel pipe cutting is completed, the three sets of saw blades stop rotating and reset, completing the cutting operation.

[0058] Reset the three sets of saw blades to prepare for the next cutting.

[0059] Cutting is performed using three sets of saw blades, which shortens the total working time of a single saw blade. Compared with traditional cutting methods, this process can use three sets of saw blades to perform high-speed cutting when facing steel pipes with large diameter and thickness, thereby improving work efficiency. At the same time, the cutting time of each set of saw blades is shortened, effectively avoiding deformation and overheating of the saw blades due to long-term cutting, reducing economic losses and protecting cutting tools.

[0060] The feeding system is responsible for fixing the steel pipe and pushing the steel pipe to the cutting position after fixing.

[0061] Among them, after the unloading in step 5 is completed, the cut edge of the steel pipe is processed by a grinder to remove burrs and clean up dirt and residues generated during the cutting process.

[0062] Since the cut surface of the steel pipe is evenly stressed, there are fewer burrs after cutting. The cut surface can be efficiently polished by a grinder to ensure work efficiency.

[0063] Among them, during cutting, the three groups of saw blades must ensure the same rotation speed and the same moving speed to further ensure uniform cutting.

[0064] The three sets of saw blades can produce narrower saw kerfs when cutting, avoiding deformation caused by the saw blades squeezing the steel pipe.

[0065] Wherein, the cutting equipment also includes a material receiving mechanism, and one end of the steel pipe falls into the material receiving mechanism after cutting is completed to realize automatic collection.

[0066] When the receiving mechanism completes receiving the materials, the feeding system starts feeding and sawing.

[0067] Among them, in the step 4, the three sets of saw blades start to slow down when they move to 10mm from the outer surface of the steel pipe, and the rotation speed remains unchanged.

[0068] The purpose of deceleration is to prevent cutting from being too fast while ensuring cutting accuracy.

[0069] Wherein, a fence is arranged at the cutting axis of the cutting device, and the fence is made of iron sheet with a thickness of 1 mm.

[0070] Use fencing to prevent steel pipe debris from splashing.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed cutting process for large-diameter thick-walled steel pipes, characterized in that: The specific process of high-speed cutting technology is: Step 1: Equipment preparation: Select suitable cutting equipment for large-diameter thick-walled steel pipes. The cutting equipment includes three sets of circular saw blades with equal angles, and the saw blades can rotate 360 ​​degrees synchronously and move toward the cutting axis. Step 2: pipe preparation: after cleaning the surface of the pipe, place the pipe on the cutting equipment through a clamp; Step 3: Parameter setting: adjust the cutting program according to the diameter and wall thickness of the steel pipe; Step 4: high-speed cutting, the steel pipe is fed into the feeding system, and the three sets of saw blades move inward at the same time to cut the steel pipe; Step 5: Follow-up processing: unloading after cutting is completed, and grinding and cleaning operations are performed.

2. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 1 is characterized in that: The cutting equipment also includes a cooling system, a feeding system and a positioner; Among them, the cooling system is composed of a water tank, a water pump and a nozzle, and the nozzle faces the cutting axis; the feeding system is located on the right side of the cutting equipment, and the positioner is located on the upper and lower, left and right, front and back sides of the cutting axis.

3. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 1 is characterized in that: In step 4, the specific steps of high-speed cutting are: A1, first locate the cutting length of the steel pipe, and then send the steel pipe between the three sets of saw blades through the feeding system; A2, after ensuring that the cutting length meets the requirements, the feeding system stops and the three sets of saw blades start to rotate synchronously; A3, three sets of saw blades rotate 360 ​​degrees and move inwards at the same time, cutting the steel pipe step by step to ensure uniform and stable cutting depth; A4, During cutting, the cooling system sprays water on the three sets of saw blades to cool them down and reduce dust; A5, after the steel pipe cutting is completed, the three sets of saw blades stop rotating and reset, completing the cutting operation.

4. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 2 is characterized in that: The feeding system is responsible for fixing the steel pipe and pushing the steel pipe to the cutting position after fixing is completed.

5. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 1 is characterized in that: After the unloading in step 5 is completed, the cut edge of the steel pipe is processed by a grinder to remove burrs and clean up dirt and residues generated during the cutting process.

6. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 3 is characterized in that: During cutting, the three groups of saw blades must ensure the same rotation speed and the same moving speed to further ensure uniform cutting.

7. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 1, characterized in that: The cutting device also includes a material receiving mechanism, and one end of the steel pipe falls into the material receiving mechanism after cutting is completed to realize automatic collection.

8. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 7, characterized in that: When the material receiving mechanism completes the material receiving, the feeding system starts feeding and sawing.

9. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 1, characterized in that: In the step 4, the three sets of saw blades start to decelerate when they move to a position 10 mm away from the outer surface of the steel pipe, and the rotation speed remains unchanged.

10. The high-speed cutting process for large-diameter thick-walled steel pipe according to claim 1, characterized in that: A fence is arranged at the cutting axis of the cutting device, and the fence is made of iron sheet with a thickness of 1 mm.

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