阅读说明：本技术 一种无缝钢管用表面热处理设备及其热处理方法 (Surface heat treatment equipment for seamless steel pipe and heat treatment method thereof ) 是由 徐虎 于 2021-06-23 设计创作，主要内容包括：本发明公开了一种无缝钢管用表面热处理设备及其热处理方法,涉及钢管热处理技术领域,为解决现有无缝钢管用表面热处理设备通常为直线传输的流水线形式,一次仅能对一根无缝钢管进行热处理加工,且对生产车间的长度需求较高的问题。所述动力进料机构的后端设置有加热炉,所述加热炉的后端设置有动力送料机构,所述动力送料机构的后端设置有平移机构,所述平移机构上表面的中间位置处安装有动力回料机构,所述动力回料机构的前端和后端均设置有承托机构,所述平移机构下表面的一侧安装有主动导轨,所述平移机构下表面的另一侧安装有从动导轨,所述动力送料机构的一侧设置有动力接料机构,所述动力接料机构的前端设置有冷却炉。(The invention discloses surface heat treatment equipment for a seamless steel pipe and a heat treatment method thereof, relates to the technical field of steel pipe heat treatment, and aims to solve the problems that the conventional surface heat treatment equipment for the seamless steel pipe is usually in a linear transmission assembly line mode, only one seamless steel pipe can be subjected to heat treatment processing at one time, and the length requirement of a production workshop is high. The rear end of power feed mechanism is provided with the heating furnace, the rear end of heating furnace is provided with power feeding mechanism, power feeding mechanism's rear end is provided with translation mechanism, the intermediate position department of translation mechanism upper surface installs power feed back mechanism, power feed back mechanism's front end and rear end all are provided with bearing mechanism, the initiative guide rail is installed to one side of translation mechanism lower surface, driven guide rail is installed to the opposite side of translation mechanism lower surface, one side of power feeding mechanism is provided with power receiving mechanism, power receiving mechanism's front end is provided with the cooling furnace.)

1. A surface heat treatment equipment for seamless steel pipes comprises a power feeding mechanism (1), and is characterized in that: the rear end of the power feeding mechanism (1) is provided with a heating furnace (2), the rear end of the heating furnace (2) is provided with a power feeding mechanism (4), a translation mechanism (5) is arranged at the rear end of the power feeding mechanism (4), a power material returning mechanism (11) is arranged in the middle of the upper surface of the translation mechanism (5), the front end and the rear end of the power feed back mechanism (11) are both provided with a bearing mechanism (12), one side of the lower surface of the translation mechanism (5) is provided with a driving guide rail (7), the other side of the lower surface of the translation mechanism (5) is provided with a driven guide rail (6), one side of the power feeding mechanism (4) is provided with a power receiving mechanism (13), the front end of the power receiving mechanism (13) is provided with a cooling furnace (14), and the front end of the cooling furnace (14) is provided with a power discharging mechanism (21).

2. The surface heat treatment apparatus for a seamless steel pipe according to claim 1, characterized in that: bearing mechanism (12) include collateral branch frame (121), V type carrier block (122) and pneumatic cylinder (123), collateral branch frame (121) and V type carrier block (122) all are provided with two, and just two V type carrier blocks (122) are all installed between two collateral branch framves (121), pneumatic cylinder (123) set up the both sides at bearing mechanism (12) lower surface, ball screw (8) are all installed to the inside of initiative guide rail (7) and driven guide rail (6), the one end of initiative guide rail (7) and driven guide rail (6) is passed through universal driving shaft (9) transmission and is connected, step motor (10) are installed to the one end of initiative guide rail (7), and the output and the ball screw (8) transmission of step motor (10) are connected.

3. The surface heat treatment apparatus for a seamless steel pipe according to claim 2, characterized in that: guide columns (124) are arranged between the hydraulic cylinders (123) on the two sides, two guide columns (124) are arranged, and the upper ends of the two guide columns (124) are fixedly connected with the V-shaped bearing block (122).

4. The surface heat treatment apparatus for a seamless steel pipe according to claim 1, characterized in that: the upper surface mounting of heating furnace (2) has electrical box (3), and electrical box (3) are provided with threely, the internally mounted of heating furnace (2) has electromagnetic heater (26), and electromagnetic heater (26) are provided with six, and two a set of equidistance distribute in the inside of heating furnace (2).

5. The surface heat treatment apparatus for a seamless steel pipe according to claim 4, characterized in that: adjacent all be provided with first defeated material roller (27) between electromagnetic heater (26) group, and first defeated material roller (27) are provided with four, and are adjacent connect through belt drive mechanism (28) transmission between first defeated material roller (27).

6. The surface heat treatment apparatus for a seamless steel pipe according to claim 1, characterized in that: the one end of heating furnace (2) is provided with feed end (22), the internally mounted of feed end (22) has first transition roller (24), and the roller of first transition roller (24) rotates with heating furnace (2) inner wall and is connected, the other end of heating furnace (2) is provided with discharge end (23), and the internally mounted of discharge end (23) has straightening wheelset (25).

7. The surface heat treatment apparatus for a seamless steel pipe according to claim 1, characterized in that: the inside one side of cooling furnace (14) is provided with first cooling chamber (15), one side of first cooling chamber (15) is provided with second cooling chamber (16), radiator fan group (19) are all installed to the both sides of first cooling chamber (15) and second cooling chamber (16) outer wall, water-cooling circulating pipe (30) are installed to one side of second cooling chamber (16) inner wall, and the both ends of water-cooling circulating pipe (30) all run through and extend to the outside of second cooling chamber (16).

8. The surface heat treatment apparatus for a seamless steel pipe according to claim 7, characterized in that: one side of second cooling chamber (16) is provided with third cooling chamber (17), install U type pipe support (20) on the outer wall of third cooling chamber (17), install nozzle (29) on the inner wall of U type pipe support (20), nozzle (29) are provided with a plurality of, and the one end of a plurality of nozzle (29) all runs through and extends to the inside of third cooling chamber (17), the below of third cooling chamber (17) is provided with deposit hydroecium (31), and is provided with a plurality of water guide holes between deposit hydroecium (31) and third cooling chamber (17), drain valve (18) are installed to the front end of deposit hydroecium (31), second transition roller (39) are all installed to the inside at cooling furnace (14) both ends, all install second conveying roller (38) between first cooling chamber (15), second cooling chamber (16) and the third cooling chamber (17).

9. The surface heat treatment apparatus for a seamless steel pipe according to claim 1, characterized in that: the inside of power feed mechanism (1), power feeding mechanism (4), power feed back mechanism (11), power receiving mechanism (13) and power row material mechanism (21) includes base (32), curb plate (33) and power roller (34), curb plate (33) are provided with two, and install the both sides at base (32) upper surface respectively in two curb plate (33), power roller (34) are provided with two, and just the both ends of two power rollers (34) all rotate with curb plate (33) through transmission shaft (35) and are connected, one end install belt protection casing (36) on the outer wall of transmission shaft (35), install asynchronous machine (37) on the outer wall of belt protection casing (36) one end, and the output of asynchronous machine (37) passes through the belt and the belt pulley is connected with transmission shaft (35) transmission.

10. The heat treatment method of the surface heat treatment apparatus for the seamless steel pipe according to any one of claims 1 to 9, comprising the steps of:

the method comprises the following steps: two seamless steel pipes are conveyed to a power feeding mechanism (1) by a feeder and are synchronously driven by two groups of power rollers (34) on the power feeding mechanism (1), and the two steel pipes are simultaneously conveyed into a heating furnace (2);

step two: six electromagnetic heaters (26) are arranged in the heating furnace (2), two heaters are distributed in the heating furnace (2) in a group at equal intervals, the heating temperature is increased step by step, after two steel pipes enter the heating furnace (2), the steel pipes advance along the furnace body under the power action of a first material conveying roller (27), and the steel pipes are gently heated to the heat treatment temperature under the action of the three heaters;

step three: after the heat treatment temperature is reached, the steel pipe is continuously conveyed to the straightening wheel set (25) by the first conveying roller (27), and the bending phenomenon of the pipe body caused by uneven heating at the front end and the rear end is solved under the pressing action of the straightening wheel set (25);

step four: after the pipe body is straightened, the pipe body is transferred to a translation mechanism (5) by a power feeding mechanism (4) at a discharge port;

step five: a hydraulic cylinder (123) on the translation mechanism (5) is driven to enable a V-shaped bearing block (122) group on the two bearing mechanisms (12) to lift two steel pipes, and a driving guide rail (7) is started simultaneously to enable the driving guide rail and the driven guide rail (6) to cooperate through a universal driving shaft (9) so as to transfer the translation mechanism (5) to the rear end of the cooling furnace (14);

step six: the hydraulic cylinder (123) is driven again to put down the steel pipe, so that the steel pipe is in contact with the power material returning mechanism (11) on the translation mechanism (5), and the steel pipe is conveyed into the cooling furnace (14) under the synergistic action of the power material returning mechanism (11) and the power material receiving mechanism (13);

step seven: after the steel pipe got into cooling furnace (14), horizontal convulsions were realized at first by radiator fan group (19) of first cooling chamber (15) both sides, carry out preliminary cooling, send to second cooling chamber (16) by second conveying roller (38) again, rely on radiator fan group (19) to carry out horizontal convulsions equally, cooperation water-cooling circulating pipe (30) further promote cooling efficiency simultaneously, get into third cooling chamber (17) at last, realize thorough cooling by nozzle (29) of U type pipe support (20) inner wall, send out by power row discharge mechanism (21) of discharge gate department after finishing, in order to accomplish whole set of thermal treatment flow.

Technical Field

The invention relates to the technical field of steel pipe heat treatment, in particular to surface heat treatment equipment for a seamless steel pipe and a heat treatment method thereof.

Background

Heat treatment refers to a hot metal working process in which a material is heated, held and cooled in the solid state to achieve a desired texture and properties. When the seamless steel pipe is produced, the heat treatment of the seamless steel pipe has the functions of improving the mechanical property of the steel pipe material, eliminating residual stress and improving the cutting processability of steel pipe metal.

However, the existing surface heat treatment equipment for the seamless steel pipe is usually in a linear transmission assembly line form, only one seamless steel pipe can be subjected to heat treatment processing at a time, and the length requirement of a production workshop is high; we have proposed a surface heat treatment apparatus for seamless steel pipes and a heat treatment method thereof in order to solve the problems set forth above.

Disclosure of Invention

The invention aims to provide surface heat treatment equipment for seamless steel pipes and a heat treatment method thereof, which aim to solve the problems that the conventional surface heat treatment equipment for seamless steel pipes in the background art is usually in a linear transmission pipeline form, only one seamless steel pipe can be subjected to heat treatment processing at one time, and the requirement on the length of a production workshop is high.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a surface heat treatment equipment for seamless steel pipe, includes power feeding mechanism, power feeding mechanism's rear end is provided with the heating furnace, the rear end of heating furnace is provided with power feeding mechanism, power feeding mechanism's rear end is provided with translation mechanism, the intermediate position department of translation mechanism upper surface installs power feed back mechanism, power feed back mechanism's front end and rear end all are provided with bearing mechanism, the initiative guide rail is installed to one side of translation mechanism lower surface, driven rail is installed to the opposite side of translation mechanism lower surface, the slider on initiative guide rail and the driven rail all with translation mechanism's bottom surface fixed connection, one side of power feeding mechanism is provided with power receiving mechanism, power receiving mechanism's front end is provided with the cooling furnace, the front end of cooling furnace is provided with power row material mechanism.

Preferably, bearing mechanism includes collateral branch frame, V type carrier block and pneumatic cylinder, collateral branch frame and V type carrier block all are provided with two, and two V type carrier blocks all install between two collateral branch framves, be provided with anti-skidding line on the outer wall of V type carrier block, the pneumatic cylinder sets up the both sides at the bearing mechanism lower surface, ball screw is all installed to the inside of initiative guide rail and driven rail, the one end of initiative guide rail and driven rail is passed through the universal driving shaft and is connected, step motor is installed to the one end of initiative guide rail, and step motor's output and ball screw transmission are connected.

Preferably, two guide columns are arranged between the hydraulic cylinders on the two sides, and the upper ends of the two guide columns are fixedly connected with the V-shaped bearing block.

Preferably, the last surface mounting of heating furnace has the electrical box that connects, and connects the electrical box and be provided with threely, the internally mounted of heating furnace has electromagnetic heater, and electromagnetic heater is provided with six, and two a set of equidistance distribute in the inside of heating furnace, electromagnetic heater includes cylinder shell and spiral electromagnetic heating coil, and spiral electromagnetic heating coil installs on the inner wall of cylinder shell.

Preferably, adjacent all be provided with first defeated material roller between the electromagnetic heater group, and first defeated material roller is provided with four, and is adjacent connect through belt drive mechanism transmission between the first defeated material roller.

Preferably, one end of the heating furnace is provided with a feeding end, a first transition roller is installed inside the feeding end, a roller shaft of the first transition roller is rotatably connected with the inner wall of the heating furnace, a discharging end is arranged at the other end of the heating furnace, and a straightening wheel set is installed inside the discharging end.

Preferably, one side of the inside of cooling furnace is provided with first cooling chamber, one side of first cooling chamber is provided with the second cooling chamber, radiator fan group is all installed to the both sides of first cooling chamber and second cooling outdoor wall, the water-cooling circulating pipe is installed to one side of second cooling indoor wall, and the both ends of water-cooling circulating pipe all run through and extend to the outside in second cooling chamber, the both ends of water-cooling circulating pipe are connected with the water inlet and the return water mouth of external cold water machine respectively.

Preferably, one side in second cooling room is provided with the third cooling room, install U type pipe support on the outer wall in third cooling room, install the nozzle on the inner wall of U type pipe support, the nozzle is provided with a plurality of, and the one end of a plurality of nozzle all runs through and extends to the inside in third cooling room, the below in third cooling room is provided with the deposit hydroecium, and is provided with a plurality of water guide holes between deposit hydroecium and the third cooling room, the drain valve is installed to the front end of deposit hydroecium, the second transition roller is all installed to the inside at cooling furnace both ends, all install the second between first cooling room, second cooling room and the third cooling room and fail the material roller.

Preferably, power feed mechanism, power feeding mechanism, power feed back mechanism, power receiving mechanism and power are arranged the inside of material mechanism and are included base, curb plate and power roller, the curb plate is provided with two, and just two curb plates install the both sides at the base upper surface respectively, the power roller is provided with two, and just the both ends of two power rollers all rotate with the curb plate through the transmission shaft and be connected, one end install the belt protection casing on the outer wall of transmission shaft, install asynchronous machine on the outer wall of belt protection casing one end, and asynchronous machine's output passes through the belt and the belt pulley is connected with the transmission shaft transmission.

Preferably, the heat treatment method of the surface heat treatment equipment for the seamless steel pipe comprises the following steps:

the method comprises the following steps: conveying two seamless steel pipes to a power feeding mechanism by a feeder, synchronously transmitting the two seamless steel pipes to a heating furnace by two groups of power rollers on the power feeding mechanism;

step two: six electromagnetic heaters are arranged in the heating furnace, two heaters are distributed in the heating furnace in a group at equal intervals, the heating temperature is increased step by step, after two steel pipes enter the heating furnace, the steel pipes advance along the furnace body under the power action of the first material conveying roller, and the steel pipes are gently heated to the heat treatment temperature under the action of the three groups of heaters;

step three: after the heat treatment temperature is reached, the steel pipe is continuously conveyed to the straightening wheel set by the first conveying roller, and the bending phenomenon of the pipe body caused by uneven heating at the front end and the rear end is solved under the pressing effect of the straightening wheel set;

step four: after the pipe body is straightened, the pipe body is transferred to a translation mechanism by a power feeding mechanism at a discharge port;

step five: driving a hydraulic cylinder on the translation mechanism to enable a V-shaped bearing block group on the two bearing mechanisms to lift two steel pipes, and simultaneously starting a driving guide rail to enable the driving guide rail to transfer the translation mechanism to the rear end of the cooling furnace through the synergistic effect of a linkage shaft and a driven guide rail;

step six: driving the hydraulic cylinder to put down the steel pipe again to make the steel pipe contact with the power material returning mechanism on the translation mechanism, and sending the steel pipe into the cooling furnace under the synergistic action of the power material returning mechanism and the power material receiving mechanism;

step seven: after the steel pipe gets into the cooling furnace, at first realize horizontal convulsions by the radiator fan group of first cooling chamber both sides, carry out preliminary cooling, send to the second cooling chamber by the second conveying roller again, rely on radiator fan group to carry out horizontal convulsions equally, cooperate the water-cooling circulating pipe to further promote cooling efficiency simultaneously, get into the third cooling chamber at last, realize thorough cooling by the nozzle of U type pipe rack inner wall, send out by the power discharge mechanism of discharge gate department after finishing to accomplish a whole set of thermal treatment flow.

Compared with the prior art, the invention has the beneficial effects that:

1. the cooling furnace used in the heat treatment process is arranged at one side of the heating furnace, the rear ends of the cooling furnace and the heating furnace are provided with the translation mechanisms, after the steel pipe is heated, the steel pipe can be transferred into the translation mechanism from the heating furnace through the power mechanism, then the steel pipe is translated to the rear end of the cooling furnace through the transmission action of the electric guide rail, and is continuously conveyed into the cooling furnace through the power mechanism, so that the cooling treatment is realized, compared with the traditional linear assembly line material conveying, the length of the production line is greatly reduced by the arrangement of the translation mechanism, the requirement on the length of a production workshop is reduced, the problems that the existing production line is longer, inconsistent or even uncoordinated in head and tail operation is difficult to find, the timely treatment is difficult, and the large influence on the production result is easy to occur are solved, and the power mechanism of the whole set of equipment is composed of two groups of power rollers, can simultaneously convey two seamless steel pipes during processing, thereby greatly improving the production efficiency.

2. Three groups of electromagnetic heaters are arranged in the heating furnace, and the cooling furnace is divided into a first temperature reduction chamber, a second temperature reduction chamber and a third temperature reduction chamber, so that the temperatures of the three groups of electromagnetic heaters are gradually increased in the temperature increasing stage of heat treatment, the surface temperature of the tube can be increased in a relatively gentle manner, and the situation of over-quick temperature increase is avoided; and in the cooling stage, the steel pipe is at first realized horizontal convulsions by the radiator fan group of first cooling room both sides, carry out preliminary cooling, be sent to the second cooling room by the second conveying roller again, rely on radiator fan group to carry out horizontal convulsions equally, cooperate the water-cooling circulating pipe to further promote cooling efficiency simultaneously, get into the third cooling room at last, realize thorough cooling by the nozzle of U type pipe rack inner wall, reach the effect of cooling step by step, two sets of system synergism, seamless steel pipe has been avoided at the surface heat treatment in-process, because of rising and falling the temperature is too fast, lead to the condition that the outer wall takes place the fracture.

3. The straightening wheel set is arranged at the discharge end of the heating furnace and consists of a plurality of vertically staggered wheel hubs, so that when a pipe passes through, the straightening treatment can be performed under the vertical pressing effect of the wheel set, and the bending phenomenon caused by different temperatures at the front end and the rear end of the pipe body in the heating stage is solved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the heating furnace of the present invention;

FIG. 3 is a schematic view of the internal structure of the cooling furnace of the present invention;

FIG. 4 is a schematic structural diagram of a power mechanism according to the present invention;

FIG. 5 is a schematic view of the supporting mechanism of the present invention;

in the figure: 1. a powered feed mechanism; 2. heating furnace; 3. connecting a power box; 4. a power feeding mechanism; 5. a translation mechanism; 6. a driven guide rail; 7. an active guide rail; 8. a ball screw; 9. a linkage shaft; 10. a stepping motor; 11. a powered feed back mechanism; 12. a support mechanism; 121. a side bracket; 122. a V-shaped bearing block; 123. a hydraulic cylinder; 124. a guide post; 13. a power receiving mechanism; 14. cooling the furnace; 15. a first temperature reduction chamber; 16. a second temperature reduction chamber; 17. a third temperature reduction chamber; 18. a drain valve; 19. a heat radiation fan set; 20. a U-shaped pipe frame; 21. a power discharge mechanism; 22. a feeding end; 23. a discharge end; 24. a first transition roll; 25. a straightening wheel set; 26. an electromagnetic heater; 27. a first delivery roller; 28. a belt drive mechanism; 29. a nozzle; 30. a water-cooled circulation pipe; 31. a water storage chamber; 32. a base; 33. a side plate; 34. a power roller; 35. a drive shaft; 36. a belt guard; 37. an asynchronous motor; 38. a second delivery roller; 39. a second transition roll.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, an embodiment of the present invention is shown: the utility model provides a surface heat treatment equipment for seamless steel pipe, including power feed mechanism 1, the rear end of power feed mechanism 1 is provided with heating furnace 2, the rear end of heating furnace 2 is provided with power feeding mechanism 4, the rear end of power feeding mechanism 4 is provided with translation mechanism 5, power feed back mechanism 11 is installed to the intermediate position department of translation mechanism 5 upper surface, the front end and the rear end of power feed back mechanism 11 all are provided with bearing mechanism 12, initiative guide rail 7 is installed to one side of translation mechanism 5 lower surface, driven rail 6 is installed to the opposite side of translation mechanism 5 lower surface, slider on initiative guide rail 7 and the driven rail 6 all with the bottom surface fixed connection of translation mechanism 5, one side of power feeding mechanism 4 is provided with power receiving mechanism 13, the front end of power receiving mechanism 13 is provided with cooling furnace 14, the front end of cooling furnace 14 is provided with power row material mechanism 21.

Further, the supporting mechanism 12 comprises side brackets 121, V-shaped bearing blocks 122 and hydraulic cylinders 123, two of the side brackets 121 and two of the V-shaped bearing blocks 122 are arranged, the two V-shaped bearing blocks 122 are arranged between the two side brackets 121, anti-skid threads are arranged on the outer walls of the V-shaped bearing blocks 122, the hydraulic cylinders 123 are arranged on two sides of the lower surface of the supporting mechanism 12, ball screws 8 are arranged inside the driving guide rail 7 and the driven guide rail 6, one ends of the driving guide rail 7 and the driven guide rail 6 are in transmission connection through a linkage shaft 9, a stepping motor 10 is arranged at one end of the driving guide rail 7, the output end of the stepping motor 10 is in transmission connection with the ball screws 8, when the seamless steel pipe moves to the translation mechanism 5, the hydraulic cylinders 123 can be driven to drive the two groups of supporting mechanisms 12 to lift up, the steel pipe is supported by the V-shaped bearing blocks 122, then under the synergistic action of the driving guide rail 7 and the driven guide rail 6, the steel pipe is translated to the rear end of the cooling furnace 14, and the hydraulic cylinder 123 is driven again to put down the bearing mechanism 12, so that the steel pipe is in contact with the power material returning mechanism 11 and is convenient to transfer into the cooling furnace 14.

Further, be provided with guide pillar 124 between the pneumatic cylinder 123 of both sides, guide pillar 124 is provided with two, and the upper end of two guide pillars 124 all with V type carrier block 122 fixed connection, guide pillar 124 is the sleeve pipe that has extending structure, can cooperate pneumatic cylinder 123 to go up and down, promotes its stability.

Further, the last surface mounting of heating furnace 2 has electrical box 3, and electrical box 3 is provided with threely, the internally mounted of heating furnace 2 has electromagnetic heater 26, electromagnetic heater 26 is provided with six, and two a set of equidistance distribute in the inside of heating furnace 2, electromagnetic heater 26 includes cylindrical shell and spiral electromagnetic heating coil, and spiral electromagnetic heating coil installs on the inner wall of cylindrical shell, three sets of electromagnetic heater 26's temperature risees step by step, can lift pipe body surface temperature with comparatively gentle mode, avoid rising temperature too fast, lead to the condition of body fracture to take place.

Further, first material conveying rollers 27 are arranged between adjacent electromagnetic heater 26 groups, four first material conveying rollers 27 are arranged, the adjacent first material conveying rollers 27 are in transmission connection through a belt transmission mechanism 28, and the first material conveying rollers 27 play a role in conveying steel pipes in the heating furnace 2.

Further, one end of the heating furnace 2 is provided with a feeding end 22, the internally mounted of the feeding end 22 is provided with a first transition roller 24, a roller shaft of the first transition roller 24 is rotatably connected with the inner wall of the heating furnace 2, the other end of the heating furnace 2 is provided with a discharging end 23, the internally mounted of the discharging end 23 is provided with a straightening wheel set 25, the discharging end 23 of the heating furnace 2 is provided with the straightening wheel set 25, the straightening wheel set 25 is composed of a plurality of vertically staggered wheel hubs, when a pipe passes through, the straightening treatment can be carried out under the vertical pressing effect of the wheel set, and the problem of the bending phenomenon caused by different temperatures of the front end and the rear end of the pipe body in the heating stage is solved.

Further, a first cooling chamber 15 is arranged on one side of the inside of the cooling furnace 14, a second cooling chamber 16 is arranged on one side of the first cooling chamber 15, cooling fan sets 19 are installed on two sides of the outer walls of the first cooling chamber 15 and the second cooling chamber 16, a water-cooling circulating pipe 30 is installed on one side of the inner wall of the second cooling chamber 16, two ends of the water-cooling circulating pipe 30 penetrate through and extend to the outside of the second cooling chamber 16, two ends of the water-cooling circulating pipe 30 are respectively connected with a water inlet and a water return port of an external water cooler, the first cooling chamber 15 and the second cooling chamber 16 can both cool the pipe body, and the second cooling chamber 16 is matched with the water-cooling circulating pipe 30 to achieve a better cooling effect, so that the gradual cooling is achieved, and the phenomenon that the temperature of the pipe body is too fast lowered and cracks are.

Further, a third cooling chamber 17 is arranged on one side of the second cooling chamber 16, a U-shaped pipe frame 20 is arranged on the outer wall of the third cooling chamber 17, nozzles 29 are arranged on the inner wall of the U-shaped pipe frame 20, a plurality of nozzles 29 are arranged, one ends of the plurality of nozzles 29 penetrate through and extend into the third cooling chamber 17, a water storage chamber 31 is arranged below the third cooling chamber 17, a plurality of water guide holes are formed between the water storage chamber 31 and the third cooling chamber 17, a drain valve 18 is arranged at the front end of the water storage chamber 31, second transition rollers 39 are arranged in two ends of the cooling furnace 14, second material conveying rollers 38 are arranged between the first cooling chamber 15, the second cooling chamber 16 and the third cooling chamber 17, the U-shaped pipe frame 20 on the third cooling chamber 17 can be externally connected with a water pipe, when the steel pipe passes through, the water is conveyed into the U-shaped pipe frame 20 by a pumping device and is sprayed out along the nozzles 29 on the inner side of the pipe frame, the pipe body is completely cooled, and the cooled wastewater enters the water storage chamber 31 along the water guide hole and can be discharged through the water discharge valve 18.

Further, the power feeding mechanism 1, the power feeding mechanism 4, the power returning mechanism 11, the power receiving mechanism 13 and the power discharging mechanism 21 internally comprise a base 32, two side plates 33 and two power rollers 34, the two side plates 33 are arranged, and two side plates 33 are respectively installed at both sides of the upper surface of the base 32, two power rollers 34 are provided, and both ends of the two power rollers 34 are rotatably connected with the side plate 33 through a transmission shaft 35, the outer wall of the transmission shaft 35 at one end is provided with a belt protection cover 36, the outer wall of one end of the belt protection cover 36 is provided with an asynchronous motor 37, and the output end of the asynchronous motor 37 is in transmission connection with the transmission shaft 35 through a belt and a belt pulley, the power mechanisms are provided with two groups of power rollers 34, the power rollers 34 are synchronously driven by the asynchronous motor 37 and the belt mechanism, and two seamless steel pipes can be simultaneously conveyed during processing, so that the production efficiency is improved.

Further, a heat treatment method of the surface heat treatment equipment for the seamless steel pipe comprises the following steps:

the method comprises the following steps: conveying two seamless steel pipes to a power feeding mechanism 1 by a feeder, synchronously transmitting the two seamless steel pipes to a heating furnace 2 by two groups of power rollers 34 on the power feeding mechanism 1;

step two: six electromagnetic heaters 26 are arranged in the heating furnace 2, two heaters are distributed in the heating furnace 2 in a group at equal intervals, the heating temperature is increased step by step, after two steel pipes enter the heating furnace 2, the steel pipes advance along the furnace body under the power action of a first material conveying roller 27, and the steel pipes are slowly heated to the heat treatment temperature under the action of the three groups of heaters;

step three: after the heat treatment temperature is reached, the steel pipe is continuously conveyed to the straightening wheel set 25 by virtue of the first conveying roller 27, and the bending phenomenon of the pipe body caused by uneven heating at the front end and the rear end is solved under the pressing action of the straightening wheel set 25;

step four: after the pipe body is straightened, the pipe body is transferred to a translation mechanism 5 by a power feeding mechanism 4 at a discharge port;

step five: driving a hydraulic cylinder 123 on the translation mechanism 5 to enable a group of V-shaped bearing blocks 122 on the two bearing mechanisms 12 to lift two steel pipes, and simultaneously starting the driving guide rail 7 to enable the driving guide rail to cooperate with the driven guide rail 6 through a linkage shaft 9 to transfer the translation mechanism 5 to the rear end of the cooling furnace 14;

step six: the hydraulic cylinder 123 is driven again to put down the steel pipe, so that the steel pipe is in contact with the power material returning mechanism 11 on the translation mechanism 5, and the steel pipe is conveyed into the cooling furnace 14 under the synergistic action of the power material returning mechanism 11 and the power material receiving mechanism 13;

step seven: after the steel pipe gets into cooling furnace 14, at first realize horizontal convulsions by the radiator fan group 19 of first cooling chamber 15 both sides, carry out preliminary cooling, send to second cooling chamber 16 by second conveying roller 38 again, rely on radiator fan group 19 to carry out horizontal convulsions equally, cooperate water-cooling circulating pipe 30 to further promote cooling efficiency simultaneously, get into third cooling chamber 17 at last, realize thorough cooling by the nozzle 29 of U type pipe rack 20 inner wall, the power discharge mechanism 21 of discharge gate department sends out after finishing, in order to accomplish a whole set of heat treatment flow.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.