CN209753666U - Composite spinning pipe - Google Patents
Composite spinning pipe Download PDFInfo
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- CN209753666U CN209753666U CN201920544361.0U CN201920544361U CN209753666U CN 209753666 U CN209753666 U CN 209753666U CN 201920544361 U CN201920544361 U CN 201920544361U CN 209753666 U CN209753666 U CN 209753666U
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Abstract
The utility model discloses a compound laying pipe, all be pipy reinforcement section and conventional section including the appearance, reinforce section output and conventional section input welded fastening, reinforce section output and conventional section input smooth transition. The utility model discloses a compound laying pipe has the advantage that the cost is lower and life is high, has solved because of the unplanned shutdown maintenance that the wearing and tearing of laying pipe and perforation lead to, influences the problem of production order stability.
Description
Technical Field
The utility model relates to a laying pipe production technical field, in particular to compound laying pipe.
Background
The laying head is a key device on the production line of a high-speed wire rod finishing mill and is positioned between a water cooling section of a rear controlled cooling line of the finishing mill and a lap-unwinding conveyor. The wire rod is changed into linear motion into spiral motion under the comprehensive action of driving force, relative inertia force, friction force, positive pressure and the like caused by the pinch roller and the spinning machine, and forms a stable coil with the diameter of about phi 1080mm and is discharged from the spinning pipe.
The spinning pipe is the key for controlling the transformation of a wire from a straight line to a wire rod, the production speed of the on-site high-speed wire is about 120m/s, the temperature range of the wire is 700-950 ℃, the wire generates high-speed relative motion in the spinning pipe and deforms, and the pipe wall and the wire continuously and violently rub under the conditions of high speed and high temperature, so that the surface of the pipe wall is damaged prematurely. Wear on the laying pipe not only affects the overall dynamic balance of the laying head and increases vibration, but also causes the ability of the laying pipe to deliver a stable loop to the conveyor to be degraded. Unstable loops can interfere with cooling uniformity and can also contribute to laying head wind-up accidents at the reforming station, require frequent and costly mill shutdowns to replace prematurely worn laying tubes, and require resolution of problems associated with the wind-up rolls at the reforming station.
The short service life caused by abnormal abrasion of the laying pipe and abnormal laying have been one of the important factors for restricting the production cost and the production efficiency of a high-speed wire production line. Therefore, the development of a high-strength, high-wear-resistant and high-temperature-resistant laying pipe, which has a prolonged service life and can enhance the stability of high-speed wire production, is urgently needed.
At present, the 9Cr1Mo material is generally adopted in China to produce the laying pipe, the strength and the wear resistance can not meet the production requirements in the wire rolling process at high temperature (700-950 ℃) and high speed (120m/s), the service life is short, meanwhile, the first strong bending section (300-500 mm of an introduction section) of the head of the laying pipe has large friction force due to the fact that the curvature of the inlet section of the laying pipe is changed too fast, obvious scratches are easily caused, unplanned production halt maintenance caused by abrasion and perforation of the laying pipe often occurs, and the stability of the production order is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compound laying pipe that cost is lower and life is high.
the above object of the present invention can be achieved by the following technical solutions:
the utility model provides a compound laying pipe, all is pipy reinforcement section and conventional section including the appearance, it is the same with conventional section internal diameter to reinforce the section, it is fixed with conventional section input welded fastening to reinforce section output, it is smooth transition with conventional section input to reinforce section output.
By adopting the technical scheme, the reinforcing section enables the composite laying pipe to have good wear resistance and high temperature resistance in a strong bending area, and prevents the composite laying pipe from wearing and piercing in the strong bending area, thereby prolonging the service life of the laying pipe; the arrangement of the conventional section ensures that the composite laying pipe can be normally used in a non-strong bending area, has simple structure and low manufacturing cost, and can effectively control the production cost on the premise of ensuring the quality of the laying pipe.
The utility model discloses further set up to: and chamfering treatment is carried out on the inner wall of the input end of the conventional section, and the inner diameter of the port of the input end of the conventional section is smaller than that of the port of the output end of the reinforcing section.
through adopting above-mentioned technical scheme, avoid the wire rod to appear blocking in the seam crossing of reinforcing section and conventional section, influence the line condition of walking of wire rod.
The utility model discloses further set up to: a connecting cylinder with two open ends is arranged between the reinforcing section and the conventional section, annular mounting grooves are formed in the output end of the reinforcing section and the input end of the conventional section, and the connecting cylinder can be mounted in the mounting grooves of the reinforcing section and the conventional section; the tip of connecting cylinder towards reinforced section is located the mounting groove, the tip of connecting cylinder towards conventional section surpasss the wall thickness of mounting groove, connecting cylinder and reinforced section, conventional section smooth transition.
By adopting the technical scheme, the connecting cylinder has a reinforcing effect on the welding seam between the reinforcing section and the conventional section, so that the welding position of the connecting cylinder cannot be easily broken, and the service life of the composite laying pipe is ensured. And one end of the connecting cylinder is positioned in the mounting groove, and the other end of the connecting cylinder exceeds the mounting groove, so that the wire penetrating into the composite laying pipe cannot be blocked, and the smoothness of the movement of the wire in the composite laying pipe is ensured.
the utility model discloses further set up to: consolidate section output and conventional section input and all be provided with 45 bevel angle structures, the lower extreme of bevel angle structure and consolidate section inner wall or the distance between the conventional section inner wall is 1 mm.
Through adopting above-mentioned technical scheme, the bevel angle structure has increased the welding area between reinforcement section and the conventional section, improves the steadiness that both are connected.
The utility model discloses further set up to: the reinforcing section input is provided with the leading-in portion of taper hole form, the wall thickness of leading-in portion port is 1.5mm, and the length of leading-in portion is 32mm, and the wall thickness is by little grow gradually, with reinforcing section smooth transition.
By adopting the technical scheme, the composite laying pipe is conveniently connected with the head of the laying pipe by the arrangement of the leading-in part.
The utility model discloses further set up to: the inner diameter of the composite spinning pipe is 16mm-30 mm.
By adopting the technical scheme, when the inner diameter of the composite spinning pipe is 16mm, the wire rod is closer to the center of the composite spinning pipe when penetrating into the composite spinning pipe, so that the final wire rod effect of the wire rod is changed; when the inner diameter of the composite spinning pipe is 30mm, the composite spinning pipe can be suitable for mixed binding of wire rods with different sizes, so that repeated replacement of the spinning pipe in a factory during production of the wire rods with different sizes is avoided, and the production efficiency of the factory is improved.
The utility model discloses further set up to: the axial length of the reinforcing section is 1300 mm.
The utility model discloses further set up to: and a tungsten carbide coating is arranged at the axial position of 300-500 mm of the reinforcing section.
By adopting the technical scheme, the tungsten carbide coating further improves the wear resistance and the high temperature resistance of the laying pipe and prolongs the service life of the composite laying pipe.
To sum up, the utility model discloses following beneficial effect has:
1. The laying pipe is divided into a reinforcing section and a conventional section, the reinforcing section is made of materials with good wear resistance and high temperature resistance, and the conventional section is made of conventional materials in the industry, so that the composite laying pipe can effectively reduce wear and perforation in a strong bending area and can also ensure the normal use of the laying pipe in a non-strong bending area, and the production cost can be effectively controlled on the premise of ensuring the quality of the laying pipe;
2. through set up the connecting cylinder between reinforcement section and conventional section, the connecting cylinder welding seam plays reinforced (rfd) effect to guarantee the life of compound laying pipe, the connecting cylinder and reinforcement section, conventional section smooth transition moreover make the wire rod can steadily circulate in compound laying pipe.
drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a schematic view showing a state in which a composite laying pipe is molded in example 1;
FIG. 3 is a schematic structural view of embodiment 2.
In the figure, 1, a reinforcing section; 2. a conventional section; 3. a chamfer angle structure; 4. an introduction section; 5. mounting grooves; 6. a connecting cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
example 1: a composite laying pipe, as shown in figure 1, comprises a reinforced section 1 with the axial length of 1300mm and a conventional section 2 with the axial length of 2500mm, wherein the reinforced section 1 and the conventional section 2 are tubular structures with the same pipe diameter and specification. Conventional stage 2 may be made of 9Cr1Mo, and the material composition of the reinforcing stage 1 may be selected as: c: 0.06, Mn: 0.30, P is less than or equal to 0.02, S is less than or equal to 0.01, Si: 0.20, Cr: 7.50, Mo: 0.90, V: 0.18, Nb: 0.06, N: 0.03, Ni: less than or equal to 0.10, Cu: 0.10 to 0.30, W: less than or equal to 0.0004, Co: less than or equal to 0.001, B: 0.01-0.05, TiC is less than or equal to 0.0006, and the balance is iron.
The manufacturing method of the reinforced section 1 comprises the following steps:
(1) Preparing raw materials: the components are taken according to the mass ratio as follows: c: 0.06, Mn: 0.30, P is less than or equal to 0.02, S is less than or equal to 0.01, Si: 0.20, Cr: 7.50, Mo: 0.90, V: 0.18, Nb: 0.06, N: 0.03, Ni: less than or equal to 0.10, Cu: 0.10 to 0.30, W: less than or equal to 0.0004, Co: less than or equal to 0.001, B: 0.01-0.05, TiC is less than or equal to 0.0006, and the balance is iron;
Smelting: putting the raw materials into an electroslag remelting furnace, electrifying and smelting, and adding an aluminum cake for deoxidation when the temperature of molten steel reaches 1650-1670 ℃;
Pouring: taking the 1580 ℃ molten steel out of the furnace, keeping the molten steel in a ladle for 3 minutes, pouring according to a mold, and standing for later use;
Thermomechanical treatment: heating the casting to 1270 ℃ at the heating rate of 4 ℃/S, preserving heat for 10min, cooling to the temperature of an austenite non-recrystallization zone at the cooling rate of 6 ℃/S, soaking for 30S, then performing deformation with the reduction of 50%, and then cooling to 400 ℃ at 4 ℃/S;
Isothermal cooling: and (3) placing the casting subjected to the thermomechanical treatment into a 400-DEG C muffle furnace, preserving the heat for 20min, cooling with the furnace at a cooling speed of 4 ℃/min, and then forming.
When the composite laying pipe is manufactured, firstly, the 45-degree chamfer angle structure 3 is arranged at the output end of the reinforcing section 1 and the input end of the conventional section 2, the distance between the lower end of the chamfer angle structure 3 and the inner wall of the reinforcing section 1 or the inner wall of the conventional section 2 is 1mm, then chamfer angle processing is carried out on the inner wall of the input end of the conventional section 2, the inner diameter of the input end port of the conventional section 2 is smaller than the inner diameter of the output end port of the reinforcing section 1, then, the output end of the reinforcing section 1 is butted with the input end of the conventional section 2, and through welding processing between the two chamfer angle structures 3, the reinforcing section 1 and the conventional section 2 are fixed into a whole, so that. And the welding seam between the two chamfering structures 3 is polished, so that the surface quality is improved, and the reinforcing section 1 is smoothly transited to the conventional section 2.
And then putting the prepared semi-finished product into a furnace for heating at 950-1200 ℃ for 30-60 min, taking the semi-finished product laying pipe in a softened state out of the heating furnace, putting the semi-finished product laying pipe into a pipe bending machine for bending and molding, and cooling to obtain the final product composite laying pipe (refer to fig. 2). The cooling mode can be static air cooling, air cooling quenching or water quenching.
The composite laying pipe prepared in the way has good wear resistance and high temperature resistance in a strong bending area, and prevents abrasion and perforation in the strong bending area, thereby prolonging the service life of the laying pipe; the arrangement of the conventional section 2 ensures that the composite laying pipe can be normally used in a non-strong bending area, has simple structure and low manufacturing cost, and can effectively control the production cost on the premise of ensuring the quality of the laying pipe.
Furthermore, a tungsten carbide coating is arranged in a strong bending area of the reinforcing section 1, and the thickness of the tungsten carbide coating is 0.05-0.09 mm, so that the performance of the reinforcing section 1 is improved.
the inner wall of the input end of the reinforcing section 1 is provided with an inverted inclination angle, so that the input end of the reinforcing section 1 is provided with a tapered leading-in part 4, the wall thickness of the port of the leading-in part 4 is 1.5mm, the length of the leading-in part 4 is 32mm, the wall thickness gradually increases from small to large, and the wall thickness is in smooth transition with the reinforcing section 1.
In practical application, the composite laying pipe may be specially used for rolling small-specification (below 8 mm) wires, and when the wires are routed and formed in the laying pipe, the closer the wires are to the center of the laying pipe, the better the final ring forming effect of the wires is, so that in order to ensure the production quality of the small-specification wires, the inner diameter of the composite laying pipe is reduced and can be adjusted to 16mm at least; furthermore, in order to enable the composite spinning pipe to be suitable for the condition of mixed binding of wire rods in different sizes, the inner diameter of the composite spinning pipe is not more than 30 mm; in summary, the inner diameter of the composite laying pipe should be between 16mm and 30 mm.
Example 2: the difference between the present embodiment and embodiment 1 is that, as shown in fig. 3, a connecting cylinder 6 with two open ends is disposed between the reinforcing section 1 and the conventional section 2, an annular mounting groove 5 with the same length is disposed at the output end of the reinforcing section 1 and the input end of the conventional section 2, and after the reinforcing section 1 and the conventional section 2 are butted, the connecting cylinder 6 can be just placed in the mounting groove 5 of the reinforcing section and the conventional section.
The wall thickness of the connecting cylinder 6 is larger than the depth of the mounting groove 5, namely, after the connecting cylinder 6 is clamped in the mounting groove 5, the inner wall of the connecting cylinder 6 exceeds the inner wall of the conventional section 2 in the radial direction; the oblique angle of one of them one end inner wall of connecting cylinder 6 is handled, makes this tip wall thickness size be less than 5 depth dimension of mounting groove, and the one end of connecting cylinder 6 oblique angle sets up towards reinforced section 1. Therefore, the wire penetrating into the composite spinning pipe cannot be blocked, and the moving smoothness of the wire in the composite spinning pipe is ensured; the connecting cylinder 6 has the function of reinforcing the welding seam between the reinforcing section 1 and the conventional section 2, so that the welding position cannot be easily broken, and the service life of the composite laying pipe is ensured.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. A composite laying pipe characterized by: including the appearance all be pipy reinforced section (1) and conventional section (2), reinforced section (1) is the same with conventional section (2) internal diameter, reinforced section (1) output and conventional section (2) input welded fastening, reinforced section (1) output and conventional section (2) input smooth transition.
2. The composite laying pipe of claim 1 wherein: the inner wall of the input end of the conventional section (2) is subjected to chamfering treatment, and the inner diameter of the port of the input end of the conventional section (2) is smaller than the inner diameter of the port of the output end of the reinforced section (1).
3. The composite laying pipe of claim 1 wherein: a connecting cylinder (6) with two open ends is arranged between the reinforcing section (1) and the conventional section (2), annular mounting grooves (5) are formed in the output end of the reinforcing section (1) and the input end of the conventional section (2), and the connecting cylinder (6) can be mounted in the mounting grooves (5) of the reinforcing section and the conventional section; the tip of connecting cylinder (6) towards reinforced section (1) is located mounting groove (5), the tip of connecting cylinder (6) towards conventional section (2) surpasss the wall thickness of mounting groove (5), connecting cylinder (6) and reinforced section (1), conventional section (2) smooth transition.
4. The composite laying pipe of claim 1 wherein: the reinforcing section (1) output and conventional section (2) input all are provided with 45 chamfer angle structure (3), and the distance between the lower extreme of chamfer angle structure (3) and reinforcing section (1) inner wall or conventional section (2) inner wall is 1 mm.
5. The composite laying pipe of claim 1 wherein: the reinforcing section (1) input is provided with tapered leading-in portion (4), the wall thickness of leading-in portion (4) port is 1.5mm, and the length of leading-in portion (4) is 32mm, and the wall thickness is by little grow gradually, with reinforcing section (1) smooth transition.
6. The composite laying pipe of claim 1 wherein: the inner diameter of the composite spinning pipe is 16mm-30 mm.
7. The composite laying pipe of claim 1 wherein: the axial length of the reinforcing section (1) is 1300 mm.
8. The composite laying pipe of claim 7 wherein: and a tungsten carbide coating is arranged at the axial position of 300-500 mm of the reinforcing section (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920544361.0U CN209753666U (en) | 2019-04-20 | 2019-04-20 | Composite spinning pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920544361.0U CN209753666U (en) | 2019-04-20 | 2019-04-20 | Composite spinning pipe |
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| Publication Number | Publication Date |
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| CN209753666U true CN209753666U (en) | 2019-12-10 |
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| CN201920544361.0U Active CN209753666U (en) | 2019-04-20 | 2019-04-20 | Composite spinning pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064674A (en) * | 2019-04-20 | 2019-07-30 | 北京杜根鸿运科技发展有限公司 | A kind of compound spinneret and its manufacturing method |
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2019
- 2019-04-20 CN CN201920544361.0U patent/CN209753666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064674A (en) * | 2019-04-20 | 2019-07-30 | 北京杜根鸿运科技发展有限公司 | A kind of compound spinneret and its manufacturing method |
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