CN211921650U - Heat treatment line for pipes - Google Patents

Abstract

The utility model discloses a heat treatment line for pipes, which comprises a frame, a feeding device, a quenching device and a quenching cooling device, wherein the feeding device is evenly provided with inclined guide wheels, the tempering device, tempering cooling device and derivation cutting device, it is rotatory through the drive of a rotatory power part between a plurality of oblique guide pulleys, the tubular product that is located on the oblique guide pulley removes along the axis direction and around the axial rotation, quenching device is including setting up the induction heating machine at the middle part, and set up the guide at both ends, be provided with the power part between induction heating machine and the guide, be provided with a plurality of slewing bearing in the frame, a rotatory power part two is connected to a plurality of slewing bearing, power part and guide all are connected with slewing bearing through the base ring, the power part includes the first wheel train of centre gripping in the tubular product periphery, the first wheel train of rotating electrical machines connection drives its rotation, rotatory power part two drives first wheel train and rotates around the tubular product. The whole process is automatic, mechanized and controlled with high precision, and the quality of the pipe is improved.

Description

Heat treatment line for pipes

Technical Field

The utility model relates to a heat treatment line in the industrial processing, especially relate to a heat treatment line of tubular product.

Background

For seamless steel pipes, annealing, normalizing, quenching, tempering, etc. are generally employed to heat treat to obtain the desired properties. Quenching is a heat treatment process for heating the seamless steel tube to a given temperature above the phase transition temperature and then rapidly cooling, and is used for obtaining martensite so as to obtain the required mechanical property after tempering at a proper temperature; tempering is a heat treatment process of heating the seamless steel tube to a temperature below the transformation temperature of austenite to pearlite, and then slowly cooling to room temperature, and is a heat treatment process for obtaining the required structure and performance of the seamless steel tube; in order to obtain certain strength and toughness, quenching and high-temperature tempering are combined, and the process is called quenching and tempering heat treatment process.

The existing quenching and tempering is carried out on a continuous stepping heat treatment production line comprising a quenching furnace and a tempering furnace, the pipe is input into the quenching furnace and the tempering furnace or output from the quenching furnace and the tempering furnace through a simple mechanical structure, the whole treatment process is not controlled by good details, the processing quality is uneven, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a heat treatment line of tubular product is provided, whole process automation, mechanization, high accuracy control improve the tubular product quality.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a heat treatment line for pipes comprises a rack, a feeding device, a quenching cooling device, a tempering cooling device and a guiding and cutting device, wherein oblique guide wheels are uniformly distributed on the feeding device, the quenching cooling device, the tempering cooling device and the guiding and cutting device are arranged on the rack, a plurality of oblique guide wheels are driven to rotate by a rotary power component, pipes positioned on the oblique guide wheels move along the axis direction and rotate around the axial direction, the quenching device comprises an induction heating machine arranged in the middle and guide components arranged at two ends, a power component is arranged between the induction heating machine and the guide components, a plurality of rotary support bearings are arranged on the rack and connected with a rotary power component II, the power component and the guide components are connected with the rotary support bearings by a base ring, the power component comprises a first roller group clamped on the periphery of the pipes, and a rotary motor is connected with the first roller group to, the second rotary power part drives the first roller set to rotate around the pipe.

The utility model discloses further preferred scheme: the slewing bearing comprises an inner wheel and an outer wheel, wherein the inner wheel is fixedly installed on the rack, the periphery of the outer wheel is fully distributed with wheel teeth and is connected with a power device, the base ring is connected with the outer wheel, and the power device drives the base ring to rotate through the outer wheel.

The utility model discloses further preferred scheme: the first roller group is movably arranged on the base ring, the distance between the first roller groups is adjustable, the pipe penetrates through the first roller groups, the guide part comprises four second rollers which are adjustably arranged on the base ring, the second rollers can move along the diameter direction of the second rollers, and the pipe penetrates through the middle of the four second rollers. The second rollers can rotate around the central axis, and the four second rollers are distributed in the upper, lower, left and right directions of the through hole of the substrate ring.

The utility model discloses further preferred scheme: one side of the oblique guide wheel is provided with a speed reducer which corresponds to the oblique guide wheel one by one, the speed reducers are connected with a first rotating power part, one side of each speed reducer extends out of a rotating shaft, the rotating shaft is connected with the oblique guide wheel through a joint part, the rotating power part drives the rotating shaft of the speed reducer to rotate synchronously, and the rotating shaft which rotates synchronously drives the oblique guide wheel to rotate synchronously through the joint part.

The utility model discloses further preferred scheme: the oblique guide wheel comprises a shaft rod and a third roller, the third roller is sleeved on the periphery of the shaft rod, the shaft rod is located on the horizontal plane, an included angle exists between the shaft rod and the width direction of the rack, one end of a joint piece is movably connected with the rotating shaft, the joint piece can rotate around the vertical direction located at one end of the joint piece, the joint piece can rotate around the axial direction of the rotating shaft perpendicular to the vertical direction, the other end of the joint piece is movably connected with the shaft rod, the joint piece can rotate around the vertical direction located at the other end of the joint piece, and the joint piece can rotate around the axial direction of the shaft rod perpendicular.

The utility model discloses further preferred scheme: the width direction who uses the frame is left right direction, loading attachment divide into windrow district, direction district and conveying area from left to right, windrow district bottom be provided with the lifting plate, the slope of lifting plate set up and be connected with power device, the lifting plate reciprocates on the power device drive, direction district slope be provided with the limiting plate of deflector and deflector top, the interval of limiting plate and deflector only supply a tubular product to pass through, conveying area rule arrange many oblique guide pulleys, tubular product through the direction district falls on a plurality of gyro wheels with the direction that is on a parallel with frame length direction, the axostylus axostyle drives the gyro wheel rotation, rotatory gyro wheel drive tubular product is around axle rotation and along axial displacement. .

The utility model discloses further preferred scheme: the quenching cooling device comprises a plurality of inclined guide wheels and an air ring which are regularly arranged, a pipe penetrates through the middle of the air ring, a plurality of nozzles are arranged on the surface of the air ring, the nozzles are connected with an air pump and cooling liquid through the air ring, and the nozzles are opposite to the surface of the pipe.

The utility model discloses further preferred scheme: the tempering device is a heating furnace, the tempering cooling device is connected behind the heating furnace and comprises a barrel arranged on a frame and a plurality of oblique guide wheels which are regularly arranged, the barrel is positioned on the oblique guide wheels, part of the oblique guide wheels are embedded into the barrel, one side of the barrel is provided with a row of spray pipes along the axial direction of the barrel, the top surface of the barrel is provided with a row of through holes, the spray pipes are connected with cooling liquid and spray the cooling liquid to the barrel, part of the cooling liquid enters the barrel through the through holes, the bottom of the barrel is provided with a plurality of notches, part of the oblique guide wheels are embedded into the barrel through the notches, and the cooling liquid entering the barrel is discharged through the notches.

The utility model discloses further preferred scheme: the guiding and cutting device comprises an inclined guide wheel arranged on the surface of the frame and laying components arranged on the side edge of the frame and arranged in a line, the frame is communicated with the laying components through a guide component, the cutting component is arranged at the end part of the laying component, the cutting component comprises a conveying roller group and a cutting component, a pipe passes through the middle of the conveying roller group, the conveying roller group is connected with a power device and can be close to or far away from each other under the driving of the power device, and when the conveying roller group is in a close state, the pipe positioned between the conveying roller groups is conveyed; when the conveying roller assemblies are far away from each other, the pipes positioned between the conveying roller assemblies are not stressed.

The utility model discloses further preferred scheme: the pipe sequentially passes through the feeding device, the quenching cooling device, the tempering cooling device and the guiding and cutting device.

Compared with the prior art, the utility model has the advantages of at first all set up the oblique guide pulley on loading attachment, guenching unit, quenching cooling device, tempering cooling device and the derivation cutting device and drive tubular product straight going and around the axle rotation, it is rotatory through a rotatory power spare drive between a plurality of oblique guide pulleys, keep advancing at the uniform velocity and rotation at the uniform velocity when guaranteeing the tubular product through each process. The plurality of inclined guide wheels are driven to rotate by a rotating power piece, so that the stability of the movement of the pipe is ensured. Preferably, the rotating speed of the oblique guide wheel is adjusted according to the self requirements of different processes, and the oblique guide wheel with the same rotating speed is connected to the same rotating power piece I.

Secondly, a guide part is arranged, the pipe to be processed enters the induction heating machine through the guide part, and the pipe which is heated is led out through the guide part again. The utility model discloses a tubular product is in the high state of stability all the time. Then be provided with the power part between induction heater and the guide part, the power part is including setting up the first roller train at the base ring, and rotating electrical machines and centre gripping tubular product are connected to first roller train, drive tubular product straight-going. In addition, the power part and the guide part are connected with the rotary supporting bearing through the base ring, and the rotary supporting bearing rotates to drive the pipe to rotate while advancing through the power part. The guide piece also rotates synchronously, and the pipe passing in the rotating state is not influenced. The utility model discloses a power spare and gyration support bearing cooperation, drive tubular product go straight and rotatory, and control accuracy is high for tubular product is heated more evenly at whole in-process. Therefore, the utility model discloses an overall structure setting is compared and is more reasonable in current mechanical structure, and the function is more perfect.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the quenching apparatus of the present invention;

FIG. 3 is a schematic structural view of a power element portion of the present invention;

fig. 4 is a schematic structural view of the oblique guide wheel of the present invention;

fig. 5 is a schematic structural view of the feeding device of the present invention;

fig. 6 is a cross-sectional view of the feeding device of the present invention;

FIG. 7 is a schematic structural view of the quenching cooling device of the present invention;

FIG. 8 is a schematic structural view of the tempering device and the tempering cooling device of the present invention;

FIG. 9 is a sectional view of the tempering cooling device of the present invention;

fig. 10 is a schematic structural view of the leading-out cutting device of the present invention;

fig. 11 is a schematic structural diagram of the cutting assembly of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 4: a heat treatment line for pipes comprises a rack 9, a feeding device 1, a quenching device 2, a quenching cooling device 3, a tempering device 4, a tempering cooling device 5 and a guiding and cutting device 6, wherein the pipes sequentially pass through the feeding device 1, the quenching device 2, the quenching cooling device 3, the tempering device 4, the tempering cooling device 5 and the guiding and cutting device 6. And the device is uniformly provided with oblique guide wheels 7 for driving the pipe to move straightly and rotate around a shaft. In order to control the moving stability of the pipes, the inclined guide wheels 7 are driven to rotate through a rotating power part 8a, and preferably, the same rotating power part is connected between the inclined guide wheels 7 in the same device, so that the moving stability of the pipes is ensured, the processing performance of products is improved, and the pipes are convenient to arrange.

The quenching device 2 comprises an induction heating machine 21 arranged in the middle and guiding parts arranged at two ends, a power part is arranged between the induction heating machine 21 and the guiding parts, a plurality of rotary supporting bearings 22 are arranged on the rack 9, a plurality of rotary supporting bearings 22 are connected with a second rotary power part 8b, the power part and the guiding parts are connected with the rotary supporting bearings 22 through base rings 23, the power part comprises a first roller group 24 clamped at the periphery of the pipe, a rotary motor 25 is connected with the first roller group 24 to drive the rotation of the first roller group 24, and the second rotary power part 8b drives the first roller group 24 to rotate around the pipe. The utility model discloses an induction heater 21 be prior art, can directly purchase the acquisition through equipment manufacturer.

Slewing bearing 22 includes interior wheel and foreign steamer, and interior wheel fixed mounting is in frame 9, and the foreign steamer periphery is covered with the teeth of a cogwheel and is connected with power device, and basement ring 23 is connected with the foreign steamer, and power device work will drive the rotation of basement ring 23 through the foreign steamer. The second rotary power part 8b drives the plurality of rotary support bearings 22 to synchronously rotate, so that a long pipe cannot be jammed when passing through the rotary power part, and the whole machining process is interfered.

The first roller group 24 is movably mounted on the base ring 23, the distance between the first roller groups 24 is adjustable, the pipe passes through the first roller groups 24, the guiding component comprises four second rollers 27 which are adjustably arranged on the base ring 23, the second rollers 27 can move along the diameter direction of the pipe, the second rollers 27 move parallel to the base ring 23, and the pipe passes through the middle of the four second rollers 27. The second rollers 27 are rotatable about their central axes, and the four second rollers 27 are disposed in four directions, up, down, left, and right, of the through hole of the base ring 23. Between the power and guide members there is a conductive slip ring 28. The utility model discloses set up the guide, be in order to guarantee that tubular product can be smooth and pass through along predetermined direction, predetermined straight line the utility model discloses. The structure setting of guide can satisfy the guide effect of the circular tubular product of unidimensional, even to oval tubular product, square tubular product, also can realize the direction.

One side of the oblique guide wheel 7 is provided with a speed reducer 10 which corresponds to the oblique guide wheel one by one, the speed reducers 10 are all connected with a first rotating power part 8a, one side of the speed reducer 10 extends out of a rotating shaft 10a, the rotating shaft 10a is connected with the oblique guide wheel 7 through a joint part 10b, the first rotating power part 8a drives the rotating shaft 10a of the speed reducer 10 to rotate synchronously, and the rotating shaft 10a which rotates synchronously drives the oblique guide wheel 7 to rotate synchronously through the joint part 10 b. The utility model discloses in, through being connected to a plurality of speed reducers 10 of same rotatory power spare 8a, realize the synchronous revolution of oblique guide pulley 7.

As shown in fig. 4: the oblique guide wheel 7 comprises a shaft rod 7a and a third roller 7b sleeved on the periphery of the shaft rod 7a, the shaft rod 7a is located on the horizontal plane and forms an included angle with the width direction of the rack 9, one end of a joint piece 10b is movably connected with a rotating shaft 10a, the joint piece 10b can rotate around the vertical direction located at one end of the joint piece, the joint piece 10b can rotate around the axial direction of the rotating shaft 10a perpendicular to the vertical direction, the other end of the joint piece 10b is movably connected with the shaft rod 7a, the joint piece 10b can rotate around the vertical direction located at the other end of the joint piece, and the joint piece 10b can rotate around the axial direction of the shaft rod 7a perpendicular to. The utility model discloses in consider oblique guide pulley 7 synchronous revolution's requirement, speed reducer 10 is arranged into one row. At this time, an included angle is formed between the rotating shaft 10a and the shaft rod 7a, the joint member 10b of the present invention connects the rotating shaft 10a and the shaft rod 7a, and the rotating shaft 10a can drive the shaft rod 7a to rotate. The utility model discloses a joint spare 10 b's structure and connection structure's setting for the flexibility ratio between axostylus axostyle 7a and the pivot 10a is higher, avoids oblique guide pulley 7 not in the same direction as smooth at rotatory in-process.

As shown in fig. 5 to 6: the width direction of using frame 9 is left right direction, loading attachment 1 is divided into windrow district from left to right, direction district and conveying district, windrow district bottom is provided with lifting plate 11, lifting plate 11 inclines to set up and is connected with power device, power device drive lifting plate 11 reciprocates, direction district slope is provided with deflector 12, and the limiting plate 13 of deflector 12 top, the interval of limiting plate 13 and deflector 12 only supplies a tubular product to pass through, conveying district rule arranges many oblique guide pulleys 7, tubular product through the direction district falls on oblique guide pulley 7 with the direction that is on a parallel with frame 9 length direction. By arranging the lifting plate 11 to lift the pipes in the stacking area upwards, the pipes can smoothly enter the guide area. Limiting plates 13 and guide plates 12 are arranged in the guide area, the spacing between the limiting plates and the guide plates is used for only allowing one pipe to pass through, so that the pipes can enter the guide area one by one and flow to the conveying area due to self gravity. It should be noted that the tubes are naturally stacked in a direction perpendicular to the width direction of the frame 9, i.e. the tubes are stacked in a direction parallel to the length direction of the frame 9. The pipe entering the conveying area falls onto the oblique guide wheel 7, and the oblique guide wheel 7 drives the pipe to rotate around the shaft and move along the axial direction.

As shown in fig. 7: the quenching cooling device 3 comprises a plurality of oblique guide wheels 7 and an air ring 31 which are regularly arranged, a pipe passes through the middle of the air ring 31, a plurality of nozzles 32 are arranged on the surface of the air ring 31, the nozzles 32 are connected with an air pump and cooling liquid through the air ring 31, and the nozzles 32 are opposite to the surface of the pipe. The pipe after quenching is rapidly cooled through the cooling liquid and the gas blown out by the gas pump.

As shown in fig. 8 to 9: tempering installation 4 is heating furnace 41, tempering cooling arrangement 5 links up behind heating furnace 41, tempering cooling arrangement 5 is including setting up barrel 51 in frame 9, and a plurality of oblique guide pulley 7 of regular arrangement, barrel 51 is located oblique guide pulley 7 and in partial oblique guide pulley 7 embedding barrel 51, barrel 51 one side is provided with a spray tube 52 along its axial, a through-hole has been seted up to barrel 51 top surface, spray tube 52 connects the coolant liquid and sprays the coolant liquid to barrel 51, partial coolant liquid will pass through in the through-hole gets into barrel 51, a plurality of notches have been seted up to barrel 51 bottom, partial oblique guide pulley 7 passes through notch embedding barrel 51, the coolant liquid that gets into in barrel 51 passes through the notch and discharges. The utility model discloses a one section barrel 51 is as the cooling point, and tubular product is at barrel 51 internal cooling, and barrel 51 sprays the coolant liquid to barrel 51 through spray tube 52 outward, gives barrel 51 surface cooling. Meanwhile, a row of through holes are formed in the top surface of the barrel body 51, and part of cooling liquid enters the barrel body 51 through the through holes to cool the tube body in the barrel body 51. The utility model discloses a barrel 51's structure setting, spray tube 52 spray the mode of coolant liquid, realize the slow-cooling of tubular product, realize the high quality tempering.

As shown in fig. 10 to 11: the guiding and cutting device 6 comprises a bevel guide wheel 7 arranged on the surface of the frame 9 and a laying assembly 61 arranged on the side edge of the frame 9 and arranged in a line, the frame 9 is communicated with the laying assembly 61 through a guide assembly 62, the end part of the laying assembly 61 is provided with a cutting assembly, the cutting assembly comprises a conveying roller set 63 and a cutting assembly 64, the pipe passes through the middle of the conveying roller set 63, the conveying roller set 63 is connected with a power device and can be driven by the power device to approach or separate from each other, the pipe falls on the bevel guide wheel 7, and then the pipe is guided to the laying assembly 61 through the guide assembly 62. When the conveying roller groups 63 are close to each other, the pipes positioned between the conveying roller groups 63 are conveyed; when the conveying roller group 63 is far away, the pipes between the conveying roller group 63 are not stressed. The utility model discloses the removal or the immobility of tubular product are controlled to the transport roller train 63 that can remove, and do not open through opening of traditional transport roller train 63 and stop and realize, have effectively improved the work efficiency of cutting. The structure of the guide assembly 62 adopted in the leading-out cutting device 6 can be set by referring to the feeding device 1, so that the pipes can be conveyed one by one.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is to the utility model discloses going on the detailed introduction, having used specific individual example to right in this paper the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment only is used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (9)

1. A heat treatment line for pipes comprises a rack, a feeding device, a quenching cooling device, a tempering cooling device and a guiding and cutting device, wherein inclined guide wheels are uniformly distributed on the feeding device, the quenching cooling device, the tempering cooling device and the guiding and cutting device are characterized in that a plurality of inclined guide wheels are driven to rotate through a rotary power part I, pipes positioned on the inclined guide wheels move along the axis direction and rotate around the axial direction, the quenching device comprises an induction heating machine arranged in the middle and guide parts arranged at two ends, a power part is arranged between the induction heating machine and the guide parts, a plurality of rotary support bearings are arranged on the rack and connected with a rotary power part II, the power part and the guide parts are connected with the rotary support bearings through base rings, the power part comprises a first roller group clamped on the periphery of the pipes, and a rotary motor is connected with the first roller group to drive the rotary motor to, the second rotary power part drives the first roller set to rotate around the pipe.

2. The heat treatment line for the tubular product according to claim 1, wherein the first roller sets are movably mounted on the base ring, the distance between the first roller sets is adjustable, the tubular product passes through the first roller sets, the guiding member comprises four second roller wheels adjustably mounted on the base ring, the second roller wheels are movable along the diameter direction of the base ring, the tubular product passes through the middle of the four second roller wheels, the second roller wheels can rotate around the central axes of the four second roller wheels, and the four second roller wheels are distributed in the upper, lower, left and right directions of the through holes of the base ring.

3. The heat treatment line for the pipes according to claim 1, wherein speed reducers corresponding to the inclined guide wheels are arranged on one side of each inclined guide wheel, the speed reducers are connected with first rotary power parts, a rotary shaft extends out of one side of each speed reducer, the rotary shaft is connected with the inclined guide wheels through joint parts, the rotary power parts drive the rotary shafts of the speed reducers to rotate synchronously, and the rotary shafts which rotate synchronously drive the inclined guide wheels to rotate synchronously through the joint parts.

4. The heat treatment line for the pipes according to claim 3, wherein the oblique guide wheel comprises a shaft rod and a third roller sleeved on the periphery of the shaft rod, the shaft rod is located on a horizontal plane and forms an included angle with the width direction of the rack, one end of a joint part is movably connected with the rotating shaft, the joint part can rotate around the vertical direction at one end of the joint part, the joint part can rotate around the axial direction of the rotating shaft, the axial direction of the joint part is perpendicular to the vertical direction, the other end of the joint part is movably connected with the shaft rod, the joint part can rotate around the vertical direction at the other end of the joint part, and the joint part can rotate around the axial direction of the shaft rod, the axial direction of the shaft.

5. The heat treatment line of a tubular product of claim 1, characterized in that uses the width direction of frame as left and right direction, loading attachment divide into windrow district, guide way and conveying area from left to right, windrow district bottom be provided with and lift the board, the slope of lifting board set up and be connected with power device, power device drive lifting board reciprocates, the guide way slope be provided with the limiting plate of guide way and guide way top, the interval of limiting plate and guide way only supply a tubular product to pass through, conveying area rule arrange many oblique guide pulleys, tubular product through the guide way falls on the oblique guide pulley with the direction that is on a parallel with frame length direction.

6. The heat treatment line for the pipes according to claim 1, wherein the quenching cooling device comprises a plurality of oblique guide wheels and an air ring which are regularly arranged, the pipes pass through the middle of the air ring, a plurality of nozzles are arranged on the surface of the air ring, the nozzles are connected with an air pump and cooling liquid through the air ring, and the nozzles are opposite to the surface of the pipes.

7. The heat treatment line for the pipes according to claim 1, wherein the tempering device is a heating furnace, the tempering cooling device is connected to the rear of the heating furnace, the tempering cooling device comprises a barrel arranged on a frame and a plurality of oblique guide wheels regularly arranged, the barrel is positioned on the oblique guide wheels, part of the oblique guide wheels are embedded into the barrel, a row of spray pipes are arranged on one side of the barrel along the axial direction of the barrel, a row of through holes are formed in the top surface of the barrel, the spray pipes are connected with cooling liquid and spray the cooling liquid to the barrel, part of the cooling liquid enters the barrel through the through holes, a plurality of notches are formed in the bottom of the barrel, part of the oblique guide wheels are embedded into the barrel through the notches, and the cooling liquid entering the barrel is discharged through the notches.

8. The heat treatment line for the pipes according to claim 1, wherein the guiding and cutting device comprises a bevel guide wheel arranged on the surface of the frame and a placing assembly arranged on the side of the frame and aligned in a row, the frame is communicated with the placing assembly through a guide assembly, the end of the placing assembly is provided with a cutting assembly, the cutting assembly comprises a conveying roller set and a cutting assembly, the pipes pass through the middle of the conveying roller set, the conveying roller set is connected with a power device and can be close to or far away from each other under the driving of the power device, and when the conveying roller set is close, the pipes positioned between the conveying roller set are conveyed; when the conveying roller assemblies are far away from each other, the pipes positioned between the conveying roller assemblies are not stressed.

9. The heat treatment line for the pipes according to claim 1, wherein the pipes are sequentially passed through a feeding device, a quenching cooling device, a tempering cooling device and a lead-out cutting device.

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