CN115404414A

CN115404414A - Heat treatment round steel and equipment

Info

Publication number: CN115404414A
Application number: CN202211033236.6A
Authority: CN
Inventors: 郑军辉
Original assignee: Zhejiang Fengprototype Steel Technology Co ltd
Current assignee: Zhejiang Fengprototype Steel Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-29
Anticipated expiration: 2042-08-26
Also published as: CN115404414B

Abstract

The invention discloses a heat treatment round steel and equipment, which comprises a base, wherein a heating furnace is installed on one side of the top of the base through an upright post, a detachable bottom plate is arranged at the bottom of the heating furnace, a hydraulic cylinder is arranged at the bottom of the bottom plate, an output shaft at the top of the hydraulic cylinder is connected with the bottom plate through a bolt, an electric heating pipe is installed on the inner wall of the heating furnace through a bolt, a water outlet pipe is installed at the top of the heating furnace through a bolt, a cavity is formed in the side wall of the heating furnace, a heat exchange pipe is installed in the cavity, and a water tank is arranged on the other side of the top of the base. This equipment for heat treatment's heating chamber and cooling chamber are same cavity, consequently, carry out the heat treatment in-process to the round steel, need not to move the round steel after will heating to the cooling intracavity in the heating chamber to improve heat treatment efficiency, and, avoided personnel's mistake to touch the condition of heating back round steel.

Description

Heat treatment round steel and equipment

Technical Field

The invention belongs to the technical field of machinery, and particularly relates to heat treatment round steel and equipment.

Background

The round steel is that the cross-section is circular shape solid steel, can use hot rolling technology to produce, and the round steel can be cut the round steel according to the processing demand in the use, obtains appointed length's round steel to, the round steel can improve its multinomial performance through heat treatment.

The heat treatment is a process for heating a workpiece to a specified temperature and then cooling the material to the specified temperature within a specified time, the shape of the workpiece is not changed, the quality of the workpiece can be improved, the mechanical property of the workpiece is improved, and corresponding heat treatment equipment is generally required to be used when round steel is subjected to heat treatment.

Current thermal treatment equipment is in the use, and after the round steel heaied up to appointed height, thereby need take out the round steel heating furnace intracavity, remove to cool off the intracavity, lead to the round steel to need use corresponding equipment to remove, and remove required time and increased the time of whole heat treatment, influence efficiency, moreover, remove the in-process at the round steel because round steel surface temperature is higher, if personnel's mistake touches, then scald can appear, influence the security.

Disclosure of Invention

The invention aims to provide heat treatment round steel and equipment, and aims to solve the problems that in the background technology, round steel needs to be taken out of a heating furnace cavity and moved into a cooling cavity for cooling, so that the round steel needs to be moved by using corresponding equipment, the time required by movement is prolonged, the whole heat treatment time is prolonged, the efficiency is influenced, and in the moving process of the round steel, due to the fact that the surface temperature of the round steel is high, if a person touches the round steel by mistake, scalding occurs and the safety is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: the heat-treated round steel comprises a round steel body and comprises the following components in percentage by mass: 0.3 to 1.2 percent of carbon, 0.02 to 0.04 percent of aluminum, 0.15 to 0.2 percent of phosphorus, 0.15 to 0.27 percent of silicon, 0.3 to 0.7 percent of nickel, 0.01 to 0.03 percent of sulfur, 0.7 to 1 percent of chromium, 0.15 to 0.4 percent of molybdenum, 0.8 to 1.2 percent of manganese and the balance of iron.

Further, the aluminum is acid-soluble aluminum.

The invention also provides heat treatment equipment which comprises a base, wherein a heating furnace is installed on one side of the top of the base through an upright post, a detachable bottom plate is arranged at the bottom of the heating furnace, a hydraulic cylinder is arranged at the bottom of the bottom plate, an output shaft at the top of the hydraulic cylinder is connected with the bottom plate through a bolt, an electric heating pipe is installed on the inner wall of the heating furnace through a bolt, a water outlet pipe is installed at the top of the heating furnace through a bolt, a cavity is formed in the side wall of the heating furnace, a heat exchange pipe is installed in the cavity, a water tank is arranged on the other side of the top of the base, a first water pump is arranged at one end of the water tank, the water outlet end of the first water pump is connected with the water inlet end of the heat exchange pipe through a pipeline, a second water pump is arranged at the other end of the water tank, and the water outlet end at the top of the second water pump is connected with the water outlet pipe through a pipeline.

Furthermore, the water tank is internally divided into a hot water cavity and a cold water cavity by a heat insulation plate, the water inlet end of the bottom of the first water pump is connected with the hot water cavity through a pipeline, the water inlet end of the bottom of the second water pump is connected with the cold water cavity through a pipeline, the water outlet end of the bottom of the heat exchange pipe is connected with the hot water cavity through a water pipe, and the bottom of one end of the heating furnace is connected with the hot water cavity through a water supply pipe.

Furthermore, a limiting groove is formed in the surface of the top of the bottom plate, a barrel is welded to the top in the heating furnace, a screw is installed on the surface of the bottom of the barrel through a reserved threaded hole, and a pressing plate is welded to the end, located outside the barrel, of the screw.

Furtherly, the inlet tube that is linked together with cold water chamber and hot water chamber has been welded respectively at water tank top both ends, and the welding of water tank one end bottom has the drain pipe No. one that is linked together with the hot water chamber, be provided with the valve No. one on the drain pipe, the welding of water tank other end bottom has the drain pipe No. two that is linked together with the cold water chamber, and is provided with the valve No. two on No. two drain pipes.

Further, the welding of heating furnace top one end has the pressure release pipe rather than inside intercommunication, and is provided with the relief valve on the pressure release pipe.

Furthermore, a limiting ring in contact with the inner wall of the heating furnace is welded at the edge of the top of the bottom plate.

Furthermore, a third valve is arranged on the water delivery pipe.

Further, a protective cover is installed on the periphery of the electric heating pipe through screws.

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

1. through setting up No. two water pumps, heating furnace and outlet pipe, after the inside round steel temperature of heating furnace reached required temperature, the personnel can close electric heating pipe, and No. two water pump work of control, thereby make No. two water pumps carry the cooling water in with the water tank and spray to the round steel in the heating furnace on through the outlet pipe, and then cool off the operation to the round steel, this equipment for heat treatment's heating chamber and cooling chamber are same cavity, consequently, carrying out the heat treatment in-process to the round steel, need not to remove to the cooling intracavity from the heating chamber with the round steel after heating, thereby improve heat treatment efficiency, and, the condition of round steel after the personnel mistake heating has been avoided.

2. Hot water chamber, a water pump and hot exchange pipe, when cooling the round steel, outlet pipe spun water then can get into the hot water intracavity through the flow pipe if there is remaining, and, a water pump can carry the low temperature water in the hot water intracavity to the heat exchange pipe in, thereby inhale the heat in the additional hot stove through hot exchange pipe, and the water in the heat exchange pipe can circulate under the effect of a water pump with the water in the hot water intracavity, therefore, the water in the hot water intracavity can adsorb through the heat in hot exchange pipe will heat the stove, thereby before the heating furnace tentatively heats, the hot water in the hot water intracavity can get into in the heat exchange pipe under the effect of a water pump, thereby preheat the operation to the heating furnace, and then improve the intensification efficiency of heating furnace, in order to improve thermal treatment efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of a heat-treated round steel of the present invention.

FIG. 2 is a schematic view showing the overall structure of a heat treatment apparatus according to the present invention.

FIG. 3 is a schematic cross-sectional view of a heating furnace of a heat treatment apparatus according to the present invention.

FIG. 4 is a schematic cross-sectional view of a water tank of a heat treatment apparatus according to the present invention.

FIG. 5 is a schematic top view of a cross-sectional structure of a heating furnace of a heat treatment apparatus according to the present invention.

FIG. 6 is a schematic view of a heat exchange tube structure of a heat treatment apparatus according to the present invention.

FIG. 7 is a schematic view of the connection structure of the barrel, the screw and the pressing plate of the heat treatment apparatus of the present invention.

FIG. 8 is a schematic view of a water outlet pipe structure of a heat treatment apparatus according to the present invention.

In the figure: 1. a round steel body; 2. a base; 3. a column; 4. a hydraulic cylinder; 5. a base plate; 6. a limiting ring; 7. a limiting groove; 8. heating furnace; 9. a pressure relief valve; 10. a pressure relief pipe; 11. a third valve; 12. a water supply pipe; 13. a water delivery pipe; 14. a water pump I; 15. a water tank; 16. a water inlet pipe; 17. a second water pump; 18. a second water drainage pipe; 19. a second valve; 20. a first valve; 21. a first water drain pipe; 22. a protective cover; 23. an electric heating tube; 24. a heat exchange tube; 25. a cavity; 26. a water outlet pipe; 27. a barrel; 28. a screw; 29. pressing a plate; 30. a heat insulation plate; 31. a hot water chamber; 32. a cold water chamber.

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. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

As shown in fig. 1, the heat-treated round steel comprises a round steel body 1, and comprises the following components in percentage by mass: 0.3 to 1.2 percent of carbon, 0.02 to 0.04 percent of aluminum, 0.15 to 0.2 percent of phosphorus, 0.15 to 0.27 percent of silicon, 0.3 to 0.7 percent of nickel, 0.01 to 0.03 percent of sulfur, 0.7 to 1 percent of chromium, 0.15 to 0.4 percent of molybdenum, 0.8 to 1.2 percent of manganese and the balance of iron.

Wherein the aluminum is acid-soluble aluminum.

As shown in fig. 2, 3, 4 and 5, a heat treatment device comprises a base 2, wherein a heating furnace 8 is installed on one side of the top of the base 2 through a stand column 3, a detachable bottom plate 5 is arranged at the bottom of the heating furnace 8, a hydraulic cylinder 4 is arranged at the bottom of the bottom plate 5, an output shaft at the top of the hydraulic cylinder 4 is connected with the bottom plate 5 through a bolt, an electric heating pipe 23 is installed on the inner wall of the heating furnace 8 through a bolt, a water outlet pipe 26 is installed at the top of the heating furnace 8 through a bolt, a cavity 25 is formed in the side wall of the heating furnace 8, a heat exchange pipe 24 is installed in the cavity 25, a water tank 15 is arranged on the other side of the top of the base 2, a first water pump 14 is arranged at one end of the water tank 15, the water outlet end of the first water pump 14 is connected with the water inlet end of the heat exchange pipe 24 through a pipeline, a second water pump 17 is arranged at the other end of the water tank 15, and the water outlet end of the top of the second water pump 17 is connected with the water outlet pipe 26 through a pipeline; outlet pipe 26 is the annular, and the apopore has been seted up to its bottom, and hydroenergy can spray inside heating furnace 8 from this point on the raceway to cool off the round steel, and, pneumatic cylinder 4 can drive bottom plate 5 elevating movement, and the round steel is fixed at bottom plate 5 top, so pneumatic cylinder 4 can drive round steel elevating movement, thereby makes the round steel get into in heating furnace 8, or breaks away from heating furnace 8.

As shown in fig. 2 and 4, the inside of the water tank 15 is divided into a hot water cavity 31 and a cold water cavity 32 by a heat insulation plate 30, the water inlet end of the first water pump 14 is connected with the hot water cavity 31 through a pipeline, the water inlet end of the second water pump 17 is connected with the cold water cavity 32 through a pipeline, the water outlet end of the bottom of the heat exchange pipe 24 is connected with the hot water cavity 31 through a water pipe 13, and the bottom of one end of the heating furnace 8 is connected with the hot water cavity 31 through a water supply pipe 12; hot water chamber 31 and cold water chamber 32 can hold hot water and cold water respectively, and cold water can cool off the round steel after the heating, and hot water can get into heating furnace 8 in the heat exchange pipe 24 and preheat the operation to, in the hot water heat in the hot water chamber 31 came from heating furnace 8, thereby improved the heat utilization rate of this equipment.

As shown in fig. 3 and 7, a limiting groove 7 is formed in the top surface of the bottom plate 5, a cylinder 27 is welded to the top inside the heating furnace 8, a screw 28 is installed on the bottom surface of the cylinder 27 through a reserved threaded hole, and a pressing plate 29 is welded to the end of the screw 28 located outside the cylinder 27; the height of the pressing plate 29 can be adjusted through the screw 28, so that after round steel is placed in the limiting groove 7 and enters the heating furnace 8, the pressing plate 29 can abut against the top of the round steel, and the fixing stability of the round steel is improved.

As shown in fig. 2 and 4, the two ends of the top of the water tank 15 are respectively welded with a water inlet pipe 16 communicated with a cold water cavity 32 and a hot water cavity 31, the bottom of one end of the water tank 15 is welded with a first water outlet pipe 21 communicated with the hot water cavity 31, the first water outlet pipe 21 is provided with a first valve 20, the bottom of the other end of the water tank 15 is welded with a second water outlet pipe 18 communicated with the cold water cavity 32, and the second water outlet pipe 18 is provided with a second valve 19; through the two water inlet pipes 16, liquid can be respectively filled into the cold water chamber 32 and the hot water chamber 31, and through the first water outlet pipe 21 and the second water outlet pipe 18, water in the hot water chamber 31 and the cold water chamber 32 can be respectively discharged.

As shown in fig. 2, a pressure relief pipe 10 communicated with the inside of the heating furnace 8 is welded at one end of the top of the heating furnace 8, and a pressure relief valve 9 is arranged on the pressure relief pipe 10; when the pressure in the heating furnace 8 reaches the threshold value, the pressure release valve 9 is opened, so that the pressure release operation is performed on the heating furnace 8.

As shown in fig. 2 and 3, a limiting ring 6 in contact with the inner wall of the heating furnace 8 is welded at the top edge of the bottom plate 5; when the bottom plate 5 contacts the heating furnace 8, the limiting ring 6 is tightly attached to the bottom of the inner wall of the heating furnace 8, so that the connection stability of the bottom plate 5 and the heating furnace 8 is improved.

As shown in fig. 2, a third valve 11 is arranged on the water pipe 13; the third valve 11 can control whether the water pipe 13 is conducted or not, so as to control whether water is reserved in the heat exchange pipe 24 or not.

As shown in fig. 3 and 5, a protective cover 22 is installed on the periphery of the electric heating tube 23 through screws; the protection cover 22 may protect the electric-heating tube 23 and prevent the electric-heating tube 23 from directly contacting an external object, so as to ensure the service life of the electric-heating tube 23.

The working principle and the using process of the invention are as follows: the personnel connects the electrical apparatus of the heat treatment equipment with the external power supply equipment, then, water is injected into the cold water cavity 32 of the water tank 15, next, the personnel can insert the cylinder into the limiting groove 7 at the top of the bottom plate 5, then, the hydraulic cylinder 4 is controlled to drive the bottom plate 5 to move upwards, so that the bottom plate 5 seals the bottom of the heating furnace 8, and the round steel is positioned in the heating furnace 8, next, the personnel controls the electric heating pipe 23 to work to heat the round steel, when the temperature of the round steel reaches a required value, the personnel can close the electric heating pipe 23 and control the second water pump 17 to work, so that the second water pump 17 conveys the cooling water in the water tank 15 to be sprayed onto the round steel in the heating furnace 8 through the water outlet pipe, and further cools the round steel, in the process, if water sprayed out of the water outlet pipe is remained, the water can enter the hot water cavity 31 through the water supply pipe 12, moreover, the first water pump 14 can convey the low-temperature water in the hot water cavity 31 to the heat exchange pipe 24, so that the heat in the heating furnace 8 is absorbed by the heat exchange pipe 24, and the water in the heat exchange pipe 24 and the water in the hot water cavity 31 can circularly flow under the action of the first water pump 14, so that the water in the hot water cavity 31 can absorb the heat in the heating furnace 8 through the heat exchange pipe 24, when the heating furnace 8 subsequently heats round steel, the hot water in the hot water cavity 31 can firstly enter the heat exchange pipe 24 under the action of the first water pump 14 to preheat the heating furnace 8, further the heating efficiency of the heating furnace 8 is improved, so that the heat treatment efficiency is improved, and on the next step, after the round steel is subjected to heat treatment, a person can control the hydraulic cylinder 4 again to drive the bottom plate 5 to move downwards, so that the round steel is separated from the heating furnace 8, so that the personnel can take the round steel conveniently.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, for example, as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected;

the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a heat treatment round steel, includes round steel body (1), its characterized in that: the components of the material by mass percent are as follows: 0.3 to 1.2 percent of carbon, 0.02 to 0.04 percent of aluminum, 0.15 to 0.2 percent of phosphorus, 0.15 to 0.27 percent of silicon, 0.3 to 0.7 percent of nickel, 0.01 to 0.03 percent of sulfur, 0.7 to 1 percent of chromium, 0.15 to 0.4 percent of molybdenum, 0.8 to 1.2 percent of manganese and the balance of iron.

2. A heat-treated round steel as claimed in claim 1, wherein: the aluminum is acid soluble aluminum.

3. Heat treatment equipment for round steel according to claim 1 or 2, comprising a base (2), characterized in that: base (2) top one side is through stand (3) installation heating furnace (8), and heating furnace (8) bottom is provided with detachable bottom plate (5), bottom plate (5) bottom sets up pneumatic cylinder (4), and pneumatic cylinder (4) top output shaft passes through bolted connection bottom plate (5), electric heating pipe (23) are installed through the bolt to heating furnace (8) inner wall, and the top installs outlet pipe (26) through the bolt in heating furnace (8), cavity (25) have been seted up in the lateral wall of heating furnace (8), and install hot exchange pipe (24) in cavity (25), base (2) top opposite side is provided with water tank (15), and water tank (15) one end is provided with water pump (14), the water outlet end of water pump (14) is connected with the inlet end of hot exchange pipe (24) through the pipeline, water tank (15) other end is provided with No. two water pump (17), and No. two water pump (17) top outlet end are connected with outlet pipe (26) through the pipeline.

4. The heat-treated round steel and the equipment thereof as claimed in claim 3, wherein the equipment comprises: separate into hot water chamber (31) and cold water chamber (32) through insulation board (30) in water tank (15), water pump (14) bottom end of intaking passes through pipe connection hot water chamber (31), no. two water pump (17) bottom ends of intaking pass through pipe connection cold water chamber (32), hot water chamber (31) is connected through raceway (13) to hot exchange pipe (24) bottom play water end, and hot water chamber (31) is connected through flow pipe (12) in heating furnace (8) one end bottom.

5. A heat-treated round steel and apparatus as claimed in claim 3, wherein: limiting groove (7) have been seted up on bottom plate (5) top surface, the welding of top has barrel (27) in heating furnace (8), and barrel (27) bottom surface installs screw rod (28) through reserving the screw hole, the tip welding that screw rod (28) are located outside barrel (27) has clamp plate (29).

6. The heat-treated round steel and apparatus as claimed in claim 4, wherein: water tank (15) top both ends weld respectively have inlet tube (16) that are linked together with cold water chamber (32) and hot water chamber (31), and the welding of water tank (15) one end bottom has drain pipe (21) that are linked together with hot water chamber (31), be provided with valve (20) on drain pipe (21), the welding of water tank (15) other end bottom has No. two drain pipes (18) that are linked together with cold water chamber (32), and is provided with No. two valves (19) on No. two drain pipes (18).

7. A heat-treated round steel and apparatus as claimed in claim 3, wherein: heating furnace (8) top one end welding has pressure release pipe (10) rather than inside intercommunication, and is provided with relief valve (9) on pressure release pipe (10).

8. A heat-treated round steel and apparatus as claimed in claim 3, wherein: and a limiting ring (6) in contact with the inner wall of the heating furnace (8) is welded at the edge of the top of the bottom plate (5).

9. A heat-treated round steel and apparatus as claimed in claim 3, wherein: and a third valve (11) is arranged on the water delivery pipe (13).

10. The heat-treated round steel and the equipment thereof as claimed in claim 3, wherein the equipment comprises: and a protective cover (22) is arranged on the periphery of the electric heating pipe (23) through screws.