Machining method of pipe with honeycomb net-shaped structure on inner wall
By rolling and combining honeycomb steel wire mesh with sheet material to form a honeycomb mesh structure on the inner wall, the shortcomings of traditional pipes in terms of strength, impact resistance and lightweighting are solved, achieving efficient strength improvement and cost reduction, and providing flow guiding function.
Patent Information
- Application Number
- CN202511560523.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-01-09
AI Technical Summary
Existing metal and plastic pipes are insufficient in terms of strength, impact resistance and lightweight. The traditional method of increasing wall thickness increases cost and weight, and the simple inner wall structure cannot meet multiple performance requirements.
The honeycomb wire mesh is combined with the plate by rolling to form a pipe with a honeycomb mesh structure on the inner wall. It is manufactured by rolling, slitting, rolling and welding processes to ensure that the honeycomb wire mesh and the plate are tightly bonded.
It improves the overall strength and impact resistance of the pipe, achieves lightweighting, reduces production and transportation costs, and also has a flow guiding function, making it highly cost-effective.
Smart Images
Figure CN121289964A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of pipe processing, and particularly relates to a processing method of pipe with honeycomb net structure on inner wall. BACKGROUND
[0002] Pipe is widely used in many fields such as industrial production, municipal construction, water conservancy project and underground resource exploitation. At present, the common pipe on the market is usually made of single material, such as metal pipe and plastic pipe. However, these traditional pipes have certain limitations in use.
[0003] Taking metal pipe as an example, in order to ensure that it has sufficient strength to resist the pressure of conveying medium or the load of external environment, the wall thickness of the pipe often needs to be increased, which not only leads to the increase of raw material consumption and the increase of production cost, but also makes the weight of the pipe increase, which brings inconvenience to transportation and installation. At the same time, some metal pipes perform poorly in impact resistance, and are prone to deformation or even damage when subjected to external impact, which affects their normal service life.
[0004] As for plastic pipe, although it is relatively light in weight, it lags behind metal pipe in strength and rigidity, and is difficult to be used in some scenes with high requirements on pipe strength. In addition, whether it is metal pipe or plastic pipe, the inner wall structure thereof is single, and it is difficult to well balance the requirements of strength, impact resistance and light weight and other performances.
[0005] Therefore, it has important practical significance to develop a pipe which can realize light weight and low cost on the premise of ensuring strength and performance. SUMMARY
[0006] The purpose of the present application is to solve the problems in the prior art and provide a processing method of pipe with honeycomb net structure on inner wall.
[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:
[0008] The processing method of pipe with honeycomb net structure on inner wall comprises the following steps:
[0009] Rolling combination: a layer of honeycomb steel wire mesh and a plate are put into a rolling equipment at the same time, and the two are rolled into one body in the form of rolling, so that the honeycomb steel wire mesh is tightly attached to one side surface of the plate;
[0010] Slitting into long strips: the plate after rolling combination is divided into long strips according to the preset size;
[0011] Pipe rolling forming: after slitting, the long strip plate is put into the pipe rolling machine, and the side with the honeycomb steel mesh is directed to the inside, and the pipe structure is formed;
[0012] Welding fixation: the joint of the pipe structure formed after pipe rolling is welded by high-frequency welding or laser welding, and the pipe is made.
[0013] Preferably, the processing method is specifically:
[0014] S1: material preparation: select a steel plate with a thickness of 2mm as the plate, and select a honeycomb steel mesh with a steel wire diameter of 1mm and a honeycomb aperture of 5mm;
[0015] S2: rolling combination: lay the honeycomb steel mesh on one side of the steel plate, and send them into the rolling machine together; set the rolling pressure to 300MPa, the rolling temperature to room temperature, and the rolling speed to 1m / s, and roll them to make the honeycomb steel mesh and the steel plate tightly combined into one;
[0016] S3: slitting long strip: according to the diameter of the required pipe, the plate after rolling combination is cut into a long strip with a width of 200mm;
[0017] S4: pipe rolling forming: put the slitted long strip plate into the pipe rolling machine, and make the side with the honeycomb steel mesh face the inside, and then perform pipe rolling operation to form a pipe structure with its joint aligned;
[0018] S5: welding fixation: select high-frequency welding to weld the joint of the pipe structure; set the welding current of high-frequency welding to 500A and the welding speed to 0.5m / s, and complete the welding to make a pipe with a honeycomb mesh structure on the inner wall.
[0019] Preferably, in S1, the material preparation is specifically as follows:
[0020] S1.1 select a steel plate as the plate and prepare a honeycomb steel mesh;
[0021] S1.2 before use, put the honeycomb steel mesh into a special cleaning equipment, first soak it in a weak alkaline solution to remove oil stains and impurities on the surface, then rinse it with clean water, and then put it into an oven for drying.
[0022] Preferably, in S2, the rolling combination is specifically as follows:
[0023] S2.1 lay the pretreated honeycomb steel mesh on one side of the steel plate, and use the laser positioning system to ensure that the center line of the steel mesh is completely coincident with the center line of the steel plate; fix the edge of the steel mesh by the clamp;
[0024] S2.2 After starting the rolling equipment, fine-tune the speed according to the actual situation to ensure that both can enter the gap between the rolls evenly and continuously;
[0025] After S2.3 rolling is completed, the composite plate is first visually inspected, and samples are selected for peel strength testing.
[0026] Preferably, in step S3, the cutting of the strips is as follows:
[0027] S3.1 Calculate the required strip width based on the diameter and length requirements of the pipe, and measure and mark it on the plate.
[0028] S3.2 Before the formal cutting, a trial cut should be performed to check whether the cut quality meets the requirements;
[0029] S3.3 Place the marked sheet material stably on the cutting worktable, start the cutting equipment, and perform the slitting operation according to the predetermined path.
[0030] Preferably, in step S4, the tube forming process is as follows:
[0031] S4.1 Select the pipe rolling mold and install it on the pipe rolling machine according to the target diameter and shape requirements of the pipe;
[0032] S4.2 Place the slit strips of sheet metal accurately at the feed position of the tube rolling machine, with the side with the honeycomb wire mesh facing inward, and roll at a uniform speed.
[0033] After S4.3 is rolled, the quality of the initially formed tube is checked and the dimensions of the tube are measured.
[0034] Preferably, in step S5, the welding and fixing are specifically as follows:
[0035] S5.1 Before actual welding, conduct no-load tests and trial welding;
[0036] S5.2 Before formal welding, grind the surface of the part to be welded and blow it with compressed air to ensure that the welding area is clean and tidy. Accurately place the rolled tubular structure on the welding fixture and adjust its position and angle through mechanical device to make the joint in the optimal welding position. Start the high-frequency welding equipment and perform welding operation according to the preset process parameters. During the welding process, keep the distance between the welding torch and the workpiece constant and move the welding torch evenly along the joint. After welding is completed, allow it to cool naturally to room temperature.
[0037] S5.3 Conduct a comprehensive visual inspection of the welded pipes and use X-ray or ultrasonic non-destructive testing methods to inspect the internal quality of the weld.
[0038] A method for processing a pipe with a honeycomb mesh structure on its inner wall, characterized by comprising the following steps:
[0039] S1: Material preparation: Steel plate is selected as the material;
[0040] S2: Rolling Groove: Design a special rolling die according to the preset groove type; the protrusions on the die are designed as a straight line or an arc along the length of the plate at a set angle, and ensure that after the plate is rolled, the grooves are joined to form a continuous straight line structure or a spiral structure; the designed die is precisely installed on the worktable of the rolling mill to ensure accurate matching between the upper and lower dies and rolling.
[0041] S3: Slitting into strips: According to the required pipe diameter, the rolled and bonded sheet metal is slid into strips of equal width;
[0042] S4: Tube rolling: The slit strips of sheet metal are placed into the tube rolling machine with the side containing the honeycomb wire mesh facing inward. The tube rolling operation is performed to form a tubular structure with the joints aligned.
[0043] S5: Welding and fixing: Welding is performed at the joints of the tubular structure; after welding, a tubular material with a honeycomb mesh structure on the inner wall is produced.
[0044] Preferred method: In the processing method, the welding and fixing method is as follows: a cerium-tungsten electrode rod is selected, and the filler wire material is the same as the base material; the protective gas is high-purity argon gas with a purity of not less than 99.9%.
[0045] Preferably, during the welding process, the welding current is set to an AC square wave pulse mode to ensure that the molten pool is fully solidified without burn-through.
[0046] Preferably, after the welding is fixed, post-weld treatment is performed, specifically as follows:
[0047] After welding, use a stainless steel brush to remove the oxide layer on the weld surface, then use a dilute hydrochloric acid solution to pickle away residual spatter; finally, rinse with clean water and dry; grind and polish the weld to make it smoothly transition to the base material surface.
[0048] The beneficial effects of this invention are as follows:
[0049] 1. The present invention features a honeycomb steel wire mesh on the inner wall of the pipe. The honeycomb structure itself has good mechanical properties and can effectively disperse the pressure and impact force on the pipe, thereby significantly improving the overall strength and impact resistance of the pipe and extending its service life.
[0050] 2. While ensuring the strength of the pipe, this invention, compared with the traditional method of increasing the wall thickness to improve strength, reduces the thickness of the plate by combining honeycomb steel wire mesh with the plate, thereby achieving lightweight pipe and reducing transportation and installation costs.
[0051] 3. This invention uses a rolling process to combine honeycomb wire mesh with a plate, which is simple and easy to operate, and the bond is strong. Subsequent steps such as slitting, rolling, and welding are also mature processing technologies, which facilitate industrial production.
[0052] 4. The present invention adopts a groove-cutting scheme, which can assist in the transportation of liquids condensed during the pipeline transportation process in fields such as mining, thereby ensuring the transportation effect.
[0053] 5. Compared with pipes of the same wall thickness, this invention has better mechanical properties. Compared with thicker pipes, it reduces the consumption of raw materials by reducing the thickness of the plate while maintaining pressure and impact resistance. The simple manufacturing process also reduces the cost input in the production process, making the pipe have a high cost performance. Attached Figure Description
[0054] Figure 1 This is a flowchart illustrating a method for processing a pipe with a honeycomb mesh structure on its inner wall, as proposed in this invention.
[0055] Figure 2 This is a flowchart illustrating the process of combining honeycomb wire mesh with sheet metal in a pipe manufacturing method with an inner wall honeycomb mesh structure proposed in this invention. Detailed Implementation
[0056] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.
[0057] Example 1:
[0058] A method for processing a pipe with a honeycomb mesh structure on its inner wall includes the following steps:
[0059] S1: Material Preparation
[0060] S1.1 A steel plate with a thickness of 2mm is selected as the material, and a honeycomb wire mesh with a wire diameter of 1mm and a honeycomb aperture of 5mm is selected.
[0061] S1.2 Before use, place the honeycomb wire mesh in a special cleaning device and soak it in a weak alkaline solution for a period of time (about 15 minutes) to remove surface oil and impurities; then rinse it with clean water and put it in an oven to dry at 80°C for 30 minutes to ensure that the surface of the wire mesh is dry, clean and free of residual contaminants, thereby ensuring the bonding quality between it and the board.
[0062] S2: Rolling combination
[0063] S2.1 Carefully lay the pre-treated honeycomb wire mesh on one side of the steel plate. Use a laser positioning system to ensure that the center line of the wire mesh is completely aligned with the center line of the steel plate, with the error controlled within ±0.5mm. At the same time, use clamps to fix the edge of the wire mesh to prevent it from shifting during subsequent operations.
[0064] The rolling pressure of the S2.2 rolling equipment is set to 300MPa and the rolling speed is set to 1m / s. After starting the rolling equipment, closely monitor the feeding of the plate and wire mesh, and finely adjust the speed according to the actual situation to ensure that the two can enter the gap between the rolls evenly and continuously.
[0065] After S2.3 rolling is completed, the composite plate is first inspected visually, and several samples are selected for peel strength testing. The peel strength is required to be no less than 50 N / cm.
[0066] S3: Cutting into strips
[0067] S3.1 Based on the required diameter and length of the pipe, calculate the required strip width and determine that the rolled and bonded plate should be cut into strips with a width of 200mm; measure and mark on the plate, the marking lines should be clear and the spacing error should be controlled within ±1mm;
[0068] The spindle speed of S3.2 is set to 3000 r / min and the feed rate is 50 mm / min. Before the actual cutting, a trial cut is performed to check whether the cut quality meets the requirements.
[0069] S3.3 Place the marked board material stably on the cutting worktable, start the cutting equipment, and perform the slitting operation according to the predetermined path; during the cutting process, maintain a uniform feed speed, and after each slitting, check and measure the width of the cut strips to ensure that the actual size is consistent with the design requirements;
[0070] S4: Tube Forming
[0071] S4.1 Select the pipe rolling die according to the target diameter and shape requirements of the pipe and install it on the pipe rolling machine; during installation, ensure that the coaxiality error between the central axis of the die and the central axis of the main shaft of the pipe rolling machine does not exceed 0.1mm; adjust the tension control system of the pipe rolling machine, with a tension range of 50-80N / mm².
[0072] S4.2 Place the slit strips of sheet metal accurately at the feed position of the tube rolling machine, with the side with the honeycomb wire mesh facing inward and fitting well with the mold; slowly start the tube rolling machine, gradually increase the speed to 20 r / min, and maintain a uniform rolling speed;
[0073] After S4.3 is rolled, the preliminarily formed tube is inspected to ensure that there are no obvious gaps or misalignments; the outer diameter, wall thickness, length and other dimensions of the tube are measured, and the outer diameter tolerance is required to be controlled within ±0.5mm, the wall thickness deviation is not more than ±0.2mm, and the length error is within ±5mm.
[0074] S5: Welding Fixation
[0075] S5.1 High-frequency welding equipment is selected for welding the joint; the welding current is set to 500A, the welding speed to 0.5m / s, and the frequency to 400kHz; before actual welding, no-load test and trial welding are performed.
[0076] S5.2 Before formal welding, grind the surface of the part to be welded and blow it with compressed air to ensure that the welding area is clean and tidy. Accurately place the rolled tubular structure on the welding fixture and adjust its position and angle through mechanical device to make the joint in the optimal welding position. Start the high-frequency welding equipment and perform welding operation according to the preset process parameters. During the welding process, keep the distance between the welding torch and the workpiece constant and move the welding torch evenly along the joint. After welding is completed, allow it to cool naturally to room temperature.
[0077] S5.3 Conduct a comprehensive visual inspection of the welded pipes and use non-destructive testing methods such as X-ray inspection or ultrasonic testing to inspect the internal quality of the weld.
[0078] Example 2:
[0079] A method for processing a pipe with a honeycomb mesh structure on its inner wall includes the following steps:
[0080] S1: Material Preparation
[0081] S11: Plate Selection: High-quality cold-rolled steel plate with a thickness of 2mm is selected as the base material. Q235B grade carbon structural steel can be selected, and its chemical composition meets the requirements of GB / T700 standard to ensure sufficient balance between strength and toughness.
[0082] S12: Surface treatment: Thoroughly clean the selected steel plate to remove oil, rust and other impurities from the surface;
[0083] S2: Formation of rolling groove
[0084] S2.1 Mold Design and Installation
[0085] Design a dedicated rolling die according to the required groove type; the protrusions on the die are designed as oblique straight lines or arcs with a set angle along the length of the sheet, and ensure that after the sheet is rolled, the grooves are joined to form a continuous straight or spiral structure; the designed die is precisely installed on the worktable of the rolling mill to ensure accurate fit between the upper and lower dies; use a laser calibrator to assist in positioning to ensure that the die axis is consistent with the sheet feed direction;
[0086] S2.2 Rolling parameter settings: Initial rolling pressure is set to 280MPa, and rolling speed is set to 0.8m / s;
[0087] S2.3 Rolling process monitoring: During the rolling process, regularly check and measure the dimensional accuracy and shape consistency of the grooves;
[0088] S3: Cutting into strips. Based on the specifications of the final product, calculate the required strip width and mark it with a high-precision laser rangefinder to ensure that the straightness error of the cutting line is less than 0.1mm / m. Select a large shearing machine equipped with guide rails and servo motor drive, equipped with carbide blades, and automatically complete the cutting task according to the pre-set program.
[0089] S4: Tube Forming
[0090] S4.1 Rolling operation: Fix one end of the cut strip of sheet metal to the mandrel of the tube rolling machine, and slowly wind the other end by the mechanical arm; start the tube rolling machine and gradually accelerate to the set speed, maintain constant tension throughout the rolling process, stop rolling when the predetermined number of turns is reached, and fix the end with a clamp;
[0091] S4.3 Perform a visual inspection on the rolled tube to check if the grooves are continuous;
[0092] S5: Welding Fixation
[0093] S5.1 Welding parameter settings: Use a 2.4mm diameter cerium-tungsten electrode rod; the filler wire material is the same as the base material; use high-purity argon gas with a purity of not less than 99.9% and control the flow rate at 12L / min; set the welding current to AC square wave pulse mode, with the peak current controlled at 120A, the base current controlled at 60A, and the duty cycle controlled at 50%; control the welding speed at 0.3m / min to ensure that the molten pool is fully solidified without burn-through.
[0094] S5.2 Post-weld treatment: After welding, use a stainless steel brush to remove the oxide layer on the weld surface, then pickle with dilute hydrochloric acid solution to remove residual spatter; finally rinse with clean water and dry; grind and polish the weld to make it smoothly transition to the base material surface.
[0095] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A method for processing a pipe with a honeycomb mesh structure on its inner wall, characterized in that, Includes the following steps: S1: Material preparation: Select steel plate as the material and prepare honeycomb wire mesh; S2: Rolling bonding: The honeycomb wire mesh is laid flat on one side of the steel plate and fed into the rolling mill together; the two are rolled to make the honeycomb wire mesh and the steel plate tightly bonded together. S3: Slitting into strips: According to the required pipe diameter, the rolled and bonded sheet metal is slid into strips of equal width; S4: Tube rolling: The slit strips of sheet metal are placed into the tube rolling machine with the side containing the honeycomb wire mesh facing inward. The tube rolling operation is performed to form a tubular structure with the joints aligned. S5: Welding and fixing: Welding is performed at the joints of the tubular structure; after welding, a tubular material with a honeycomb mesh structure on the inner wall is produced.
2. The method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 1, characterized in that, In step S1, the material preparation is as follows: S1.1 Steel plate is selected as the material, and honeycomb wire mesh is prepared; S1.2 Before use, place the honeycomb wire mesh in a special cleaning device, soak it in a weak alkaline solution to remove surface oil and impurities; then rinse it with clean water and dry it in an oven.
3. The method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 1, characterized in that, In S2, the rolling process is specifically as follows: S2.1 The pre-treated honeycomb wire mesh is laid flat on one side of the steel plate, and a laser positioning system is used to ensure that the center line of the wire mesh is completely aligned with the center line of the steel plate; the edges of the wire mesh are fixed by clamps. S2.2 After starting the rolling equipment, fine-tune the speed according to the actual situation to ensure that both can enter the gap between the rolls evenly and continuously; After S2.3 rolling is completed, the composite plate is first visually inspected, and samples are selected for peel strength testing.
4. The method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 3, characterized in that, In step S3, the specific steps for cutting the strips are as follows: S3.1 Calculate the required strip width based on the diameter and length requirements of the pipe, and measure and mark it on the plate. S3.2 Before the formal cutting, a trial cut should be performed to check whether the cut quality meets the requirements; S3.3 Place the marked sheet material stably on the cutting worktable, start the cutting equipment, and perform the slitting operation according to the predetermined path.
5. A method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 4, characterized in that, In step S4, the tube forming process is as follows: S4.1 Select the pipe rolling mold and install it on the pipe rolling machine according to the target diameter and shape requirements of the pipe; S4.2 Place the slit strips of sheet metal accurately at the feed position of the tube rolling machine, with the side with the honeycomb wire mesh facing inward, and roll at a uniform speed. After S4.3 is rolled, the quality of the initially formed tube is checked and the dimensions of the tube are measured.
6. A method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 1, characterized in that, In step S5, the welding and fixing are specifically as follows: S5.1 Before actual welding, conduct no-load tests and trial welding; S5.2 Before formal welding, grind the surface of the part to be welded, blow it with compressed air to ensure that the welding area is clean and tidy, place the rolled tubular structure accurately on the welding fixture, and adjust its position and angle through mechanical device so that the joint is in the best welding position. Start the high-frequency welding equipment and perform welding operations according to the preset process parameters; during the welding process, keep the distance between the welding torch and the workpiece constant and move the welding torch evenly along the joint; after welding is completed, allow it to cool naturally to room temperature; S5.3 Conduct a comprehensive visual inspection of the welded pipes and use X-ray or ultrasonic non-destructive testing methods to inspect the internal quality of the weld.
7. A method for processing a pipe with a honeycomb mesh structure on its inner wall, characterized in that, Includes the following steps: S1: Material preparation: Steel plate is selected as the material; S2: Rolling Groove: Design a special rolling die according to the preset groove type; the protrusions on the die are designed as a straight line or an arc along the length of the plate at a set angle, and ensure that after the plate is rolled, the grooves are joined to form a continuous straight line structure or a spiral structure; the designed die is precisely installed on the worktable of the rolling mill to ensure accurate matching between the upper and lower dies and rolling. S3: Slitting into strips: According to the required pipe diameter, the rolled and bonded sheet metal is slid into strips of equal width; S4: Tube rolling: The slit strips of sheet metal are placed into the tube rolling machine with the side containing the honeycomb wire mesh facing inward. The tube rolling operation is performed to form a tubular structure with the joints aligned. S5: Welding and fixing: Welding is performed at the joints of the tubular structure; after welding, a tubular material with a honeycomb mesh structure on the inner wall is produced.
8. A method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 1 or 7, characterized in that, In the aforementioned processing method, the welding and fixing method is as follows: a cerium-tungsten electrode rod is selected, and the filler wire material is the same as the base material; the protective gas is high-purity argon gas with a purity of not less than 99.9%.
9. A method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 8, characterized in that, During the welding process, the welding current is set to AC square wave pulse mode to ensure that the molten pool is fully solidified without burn-through.
10. A method for processing a pipe with a honeycomb mesh structure on its inner wall according to claim 9, characterized in that, After the welding is completed, post-weld treatment is performed, as follows: After welding, use a stainless steel brush to remove the oxide layer on the weld surface, then use a dilute hydrochloric acid solution to pickle away residual spatter; finally, rinse with clean water and dry; grind and polish the weld to make it smoothly transition to the base material surface.