Heat treatment equipment and process for processing and producing 5Ni low-temperature profile steel

Abstract

The invention relates to the technical field of industrial production equipment, and particularly discloses heat treatment equipment and process for 5Ni low-temperature profile steel machining and production.The heat treatment equipment comprises two bases, a treatment tank is fixedly installed on the upper surfaces of the bases and horizontally arranged, and a telescopic rod is horizontally and fixedly connected to the outer surface of the treatment tank; and the output end of the telescopic rod is fixedly connected with a buckling cover, and the buckling cover and the treatment tank are in tight closed buckling. The air inlet pipe and the air outlet pipe are vertically arranged, so that hot air in the treatment tank can be quickly discharged according to the principle that the hot air is upward, the cooling efficiency is greatly improved, meanwhile, the cooling efficiency of steel can be further improved by cooling the interior and the exterior of the working pipe at the same time, and it is ensured that the steel is quickly cooled within the specified time; and the flow guide grooves are formed in the outer wall of the working pipe, so that the pipe wall of the working pipe is rapidly cooled.

Description

Technical Field

[0001] The invention relates to the technical field of industrial production equipment, in particular to heat treatment equipment and a process for processing and producing 5Ni low-temperature steel. Background Art

[0002] Low temperature steel is an alloy steel designed for use in low temperature environments. It has the characteristics of maintaining good mechanical properties and toughness under extremely low temperature conditions. This type of steel can be used in extremely low temperature environments below -196°C, and its brittle transition temperature is lower than the operating temperature to ensure safety and reliability. Low temperature steel usually contains a higher proportion of alloying elements, such as nickel, manganese, molybdenum, etc. The addition of these elements helps to improve the low temperature toughness and resistance to brittle fracture of the material. The classification of low temperature steel is mainly based on its crystal lattice type, which is divided into two categories: ferritic low temperature steel and austenitic low temperature steel. Ferritic low temperature steel has an obvious brittle transition temperature, and alloying elements are usually required to lower the transition temperature. Austenitic low temperature steel generally has no obvious brittle transition temperature and exhibits higher low temperature toughness.

[0003] Low-temperature steel needs to undergo heat treatment before use, including normalizing + tempering (NT), quenching + tempering (QT), and quenching + two-phase quenching + tempering (QLT), etc. This requires that the temperature of low-temperature steel needs to be precisely controlled, and the cooling rate has a significant effect on the microstructure and phase transformation temperature of 5Ni steel. An appropriate cooling rate can avoid ferrite and bainite phase transformations, promote the formation of martensite, and thus improve the low-temperature toughness of steel. However, the cooling rate of existing heat treatment equipment is generally slow, which can easily lead to reduced steel quality, while also increasing heat treatment time and reducing production efficiency. Summary of the invention

[0004] The present invention provides a heat treatment device and process for processing and producing 5Ni low-temperature steel, which solves the problems mentioned in the above background technology.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: A heat treatment equipment for processing and producing 5Ni low-temperature steel, including a base, two bases are provided, a processing tank is fixedly installed on the upper surface of the base, the processing tank is horizontally arranged, a telescopic rod is horizontally fixedly connected to the outer surface of the processing tank, the output end of the telescopic rod is fixedly connected to a buckle cover, the buckle cover and the processing tank are set to be tightly closed and buckled, and also includes: A cooling mechanism, which is fixedly installed inside the processing tank and is used to quickly cool the steel; A reinforcing mechanism, which is fixedly mounted on the cooling mechanism and is also disposed inside the processing tank, and is used to assist the cooling mechanism in working; The cooling mechanism comprises an air inlet pipe, which is fixedly connected to the bottom outer surface of the processing tank through penetration. An air outlet pipe is arranged on the opposite side of the air inlet pipe relative to the horizontal center line of the processing tank, and the air outlet pipe is fixedly connected to the top outer surface of the processing tank through penetration. The air inlet pipe is initially in a closed state, and the air outlet pipe is also initially in a closed state. The air inlet pipe and the air outlet pipe are located on the same vertical plane.

[0006] A fixing plate is fixedly connected to the inner surface of the treatment tank in a horizontally symmetrical manner. The fixing plate is arranged in an arc shape. The fixing plate and the treatment tank are arranged in equal length. A working tube is fixedly connected to the inner surface of the fixing plate. The working tube is arranged inside the treatment tank. The working tube and the treatment tank are located on the same central axis. A guide groove is provided on the outer surface of the working tube. A plurality of guide grooves are provided at fixed intervals.

[0007] Preferably, the bottom outer surface of the working tube is symmetrically penetrated with air inlet holes, and the top outer surface of the working tube is symmetrically penetrated with air outlet holes, the air inlet holes are evenly arranged in the guide groove, the air outlet holes are also evenly arranged in the guide groove, the air outlet holes and the air outlet pipe are staggered, and the blower is installed at the air inlet pipe. When the low-temperature steel needs to be heat treated, the handle on the snap-fit ​​cover can be pulled to separate the snap-fit ​​cover from the processing tank, and the steel is placed in the working tube in the processing tank. When the steel is placed, the snap-fit ​​cover is pushed to reset, and then the steel in the working tube can be heated to To meet production needs, when the temperature rises to a certain level and the steel needs to be cooled, start the blower. When the blower starts working, it will inject a large amount of cold air into the processing tank. When the cold air enters the processing tank, it will fill the bottom cavity between the working tube and the processing tank. At this time, the high-temperature air in the working tube gathers at the top of the working tube. With the continuous injection of cold air, part of the cold air will flow along the outer wall of the working tube to the air outlet pipe, and another part of the cold air will enter the working tube through the air inlet hole and prompt the hot air in the working tube to be quickly discharged through the air outlet hole, and finally all of them will be discharged through the air outlet pipe.

[0008] Preferably, a guide plate is fixedly connected to the bottom outer surface of the working tube, and the inner surface of the guide plate is fixedly spaced and fitted with the outer surface of the working tube. A connecting hole is symmetrically penetrated through the bottom surface of the guide plate, and the connecting hole is connected to the air inlet hole. The aperture of the connecting hole is larger than that of the air inlet hole.

[0009] Preferably, the connecting hole is arranged obliquely, the bottom surface edge of the guide plate is fixedly connected with an isolation frame, the upper surface of the isolation frame is arranged to fit the bottom surface of the guide plate, the bottom surface of the isolation frame is arranged to fit the inner surface of the processing tank, and the processing tank is buckled above the air inlet pipe.

[0010] Preferably, a series flow groove is horizontally opened inside the guide plate, and the series flow groove and the connecting hole are arranged to be in a connected state. The series flow groove is arranged not to penetrate the guide plate. When cold air is injected into the treatment tank through the air inlet pipe, due to the limitation of the isolation frame, the cold air can only be output inward through the connecting hole on the guide plate.

[0011] Preferably, the reinforcing mechanism includes a support plate, which is configured as a semicircular tube type. The support plate and the working tube are located on the same central axis, and limit strips are inserted at both ends of the support plate. A telescopic plate is fixedly connected to the upper surface of the limit strip, and a mounting plate is fixedly connected to the top of the telescopic plate. The mounting plate is respectively fixedly connected to the inner surface of the snap-fit ​​cover and the inner surface of the processing tank.

[0012] Preferably, spoilers are provided above both sides of the support plate, the spoilers are arranged in an arc shape, and the tops of the spoilers are tightly fitted and fixedly connected to the inner surfaces of both sides of the working tube.

[0013] A heat treatment process for processing and producing 5Ni low-temperature steel comprises the following steps: S1. Connect the blower to the air inlet pipe, pull the snap-on cover outward, and then place the steel to be heat treated into the treatment tank; S2, pushing the buckle cover in reverse to reset it to seal the processing tank, and then heating the steel in the processing tank; S3. After the steel is heated to the specified temperature, the blower is started. The blower starts to cool down the working pipe in the treatment tank, causing the temperature of the steel to drop rapidly. S4. After the steel material is cooled to a specified temperature, the blower is turned off and the steel material is then heated to a specified temperature. The steel material is repeatedly operated back and forth to control the processing temperature of the steel material. S5. After the processing is completed, start the blower again to cool down the inside of the processing tank and the steel as a whole. When the temperature drops to a safe range, pull the snap-on cover outward to take out the steel.

[0014] The present invention provides a heat treatment device and process for processing and producing 5Ni low-temperature steel. It has the following beneficial effects: 1. The heat treatment equipment and process for processing and producing 5Ni low-temperature steel can use the principle of hot air on top to quickly discharge the hot air in the processing tank by vertically arranging the air inlet pipe and the air outlet pipe, thereby greatly improving the cooling efficiency. At the same time, the cooling efficiency of the steel can be further improved by cooling the inside and outside of the working pipe at the same time, ensuring that the steel is quickly cooled within the specified time, thereby greatly improving the quality of the produced steel. In addition, by providing a guide groove on the outer wall of the working pipe, the input cold air can be guided, thereby quickly cooling the wall of the working pipe, thereby further improving the cooling effect and improving the overall quality of the produced steel.

[0015] 2. The heat treatment equipment and process for processing and producing 5Ni low-temperature steel are as follows: when the cold air passes through the connecting hole, it will enter the air inlet hole, and then enter the working tube. Since the aperture of the connecting hole is larger than that of the air inlet hole, the cold air will be in an accelerated state when entering the working tube through the connecting hole, thereby greatly improving the air circulation speed in the working tube, thereby greatly improving the output speed of the hot air in the working tube, that is, further improving the cooling speed of the steel and improving the overall quality level of the steel. Since a series flow groove is provided in the guide plate, and the series flow groove is connected to the connecting hole, a part of the cold air will be dispersed and enter the series flow groove when passing through the connecting hole, and then after passing through the series flow groove, it will flow along the outer wall of the working tube to the air outlet pipe. At this time, the cold air is also in an accelerated state when passing through the outer wall of the working tube, and cooperates with the guide groove on the outer wall of the working tube to further improve the cooling speed of the outer wall of the working tube, thereby further achieving the effect of quickly cooling the steel, thereby improving the overall quality of the steel.

[0016] 3. In the heat treatment equipment and process for processing and producing 5Ni low-temperature steel, when cold air enters the working tube through the air inlet hole, the accelerated cold air will impact the bottom of the support plate, and flow to both sides of the support plate through the outer surface of the support plate, and finally impact the middle of the working tube through the guidance of the spoiler, thereby stirring the hot air flow in the working tube in a large range, forcing the hot air in the working tube to be further quickly discharged from the working tube, that is, further improving the cooling speed of the steel, so that the steel is cooled to the required temperature more quickly, and the quality of steel production is improved. When the cold air impacts the bottom of the support plate, the support plate will also be subjected to an upward propulsion force, which will cause the limit strips at both ends of the support plate to squeeze the telescopic plate, causing the telescopic plate to shrink. At the same time, the support plate will be in an upward moving state, which will cause the two ends of the support plate to constantly approach the spoiler, thereby reducing the gap between the support plate and the spoiler, thereby greatly increasing the flow rate of the cold air, thereby further improving the discharge of hot air in the working tube, and further improving the cooling effect on the steel, thereby greatly improving the production quality of the steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention; Figure 2 It is a schematic diagram of the installation structure of the cooling mechanism and the strengthening mechanism of the present invention; Figure 3 is a top view of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the processing tank of the present invention; Figure 5 It is a schematic diagram of the split structure of the working tube of the present invention; Figure 6It is a schematic diagram of the installation structure of the supporting plate of the present invention; Figure 7 It is a partial cross-sectional schematic diagram of the working tube of the present invention; Figure 8 It is a partial cross-sectional schematic diagram of the guide plate of the present invention.

[0018] In the figure: 1. base; 2. treatment tank; 3. telescopic rod; 4. snap-on cover; 5. cooling mechanism; 51. air inlet pipe; 52. air outlet pipe; 53. fixing plate; 54. working pipe; 55. guide groove; 56. air inlet hole; 57. air outlet hole; 58. guide plate; 59. connecting hole; 510. isolation frame; 511. flow channel; 6. strengthening mechanism; 61. supporting plate; 62. limiting strip; 63. telescopic plate; 64. mounting plate; 65. spoiler. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] First embodiment: Figures 1 to 8 As shown, the present invention provides a technical solution: a heat treatment equipment for processing and producing 5Ni low-temperature steel, comprising a base 1, two bases 1 are provided, a processing tank 2 is fixedly installed on the upper surface of the base 1, the processing tank 2 is arranged horizontally, a telescopic rod 3 is horizontally fixedly connected to the outer surface of the processing tank 2, a buckle cover 4 is fixedly connected to the output end of the telescopic rod 3, and the buckle cover 4 is arranged to be tightly closed and buckled with the processing tank 2, and also includes: A cooling mechanism 5, which is fixedly installed inside the processing tank 2 and is used to quickly cool the steel; A reinforcing mechanism 6, which is fixedly mounted on the cooling mechanism 5 and is also disposed inside the processing tank 2, and is used to assist the cooling mechanism 5 in its operation; The cooling mechanism 5 includes an air inlet pipe 51, which is fixedly connected to the bottom outer surface of the processing tank 2. An air outlet pipe 52 is arranged on the opposite side of the air inlet pipe 51 relative to the horizontal center line of the processing tank 2. The air outlet pipe 52 is fixedly connected to the top outer surface of the processing tank 2. The air inlet pipe 51 is initially in a closed state, and the air outlet pipe 52 is also initially in a closed state. The air inlet pipe 51 and the air outlet pipe 52 are located on the same vertical plane.

[0021] A fixing plate 53 is fixedly connected to the inner surface of the treatment tank 2 in a horizontally symmetrical manner. The fixing plate 53 is arranged in an arc shape. The fixing plate 53 and the treatment tank 2 are arranged at the same length. A working tube 54 is fixedly connected to the inner surface of the fixing plate 53. The working tube 54 is arranged inside the treatment tank 2. The working tube 54 and the treatment tank 2 are located on the same central axis. A guide groove 55 is provided on the outer surface of the working tube 54. A plurality of guide grooves 55 are provided at fixed intervals.

[0022] The bottom outer surface of the working tube 54 is symmetrically penetrated with air inlet holes 56, and the top outer surface of the working tube 54 is symmetrically penetrated with air outlet holes 57. The air inlet holes 56 are evenly arranged in the guide groove 55, and the air outlet holes 57 are also evenly arranged in the guide groove 55. The air outlet holes 57 and the air outlet pipe 52 are staggered.

[0023] During operation, the blower can be installed at the air inlet pipe. When the low-temperature steel needs to be heat treated, the handle on the snap-on cover 4 can be pulled to separate the snap-on cover 4 from the processing tank 2, and the steel can be placed in the working tube 54 in the processing tank 2. After the steel is placed, the snap-on cover 4 is pushed to reset, and then the steel in the working tube 54 can be heated to meet production needs. When the temperature rises to a certain level and the steel needs to be cooled, the blower is started. When the blower starts working, a large amount of cold air will be injected into the processing tank 2. When the cold air enters the processing tank 2, it will fill the bottom cavity between the working tube 54 and the processing tank 2. At this time, the high-temperature air in the working tube 54 gathers at the top of the working tube 54. As the cold air is continuously injected, a part of the cold air will flow along the outer wall of the working tube 54 to the air outlet pipe 52, and the other part will flow to the air outlet pipe 52. A portion of the cold air will enter the working tube 54 through the air inlet hole 56 and prompt the hot air in the working tube 54 to be quickly discharged through the air outlet hole 57, and finally all discharged through the air outlet pipe 52. By vertically arranging the air inlet pipe 51 and the air outlet pipe 52, the hot air in the treatment tank 2 can be quickly discharged by utilizing the principle of hot air on top, thereby greatly improving the cooling efficiency. At the same time, by cooling the inside and outside of the working tube 54 at the same time, the cooling efficiency of the steel can be further improved, ensuring that the steel is quickly cooled within the specified time, thereby greatly improving the quality of the produced steel. In addition, by providing a guide groove 55 on the outer wall of the working tube 54, the input cold air can be diverted, thereby quickly cooling the tube wall of the working tube 54, thereby further improving the cooling effect and improving the overall quality of the produced steel.

[0024] Second embodiment: Figures 1 to 8 As shown, a guide plate 58 is fixedly connected to the bottom outer surface of the working tube 54, and the inner surface of the guide plate 58 is fixedly spaced and fitted with the outer surface of the working tube 54. A connecting hole 59 is symmetrically penetrated through the bottom surface of the guide plate 58, and the connecting hole 59 is connected to the air inlet hole 56. The aperture of the connecting hole 59 is larger than that of the air inlet hole 56.

[0025] The connecting hole 59 is arranged obliquely, and the bottom surface edge of the guide plate 58 is fixedly connected with an isolation frame 510. The upper surface of the isolation frame 510 is arranged to fit the bottom surface of the guide plate 58, and the bottom surface of the isolation frame 510 is arranged to fit the inner surface of the processing tank 2. The processing tank 2 is buckled on the top of the air inlet pipe 51.

[0026] A flow groove 511 is horizontally opened inside the guide plate 58 . The flow groove 511 is connected to the connecting hole 59 . The flow groove 511 does not penetrate the guide plate 58 .

[0027] During operation, when cold air is injected into the processing tank 2 through the air inlet pipe 51, due to the limitation of the isolation frame 510, the cold air can only be output inward through the connecting hole 59 on the guide plate 58. After passing through the connecting hole 59, the cold air will enter the air inlet hole 56, and then enter the working tube 54. Since the aperture of the connecting hole 59 is larger than that of the air inlet hole 56, the cold air will be accelerated when entering the working tube 54 through the connecting hole 59, thereby greatly increasing the air circulation speed in the working tube 54, and further increasing the output speed of the hot air in the working tube 54, that is, further increasing the cooling speed of the steel, thereby improving the heat dissipation of the steel. The overall quality level of high steel is improved. Since a series flow groove 511 is opened in the guide plate 58, and the series flow groove 511 is connected to the connecting hole 59, a part of the cold air will be dispersed into the series flow groove 511 when passing through the connecting hole 59, and then flow along the outer wall of the working tube 54 to the air outlet pipe 52 after passing through the series flow groove 511. At this time, the cold air is also in an accelerated state when passing through the outer wall of the working tube 54, and cooperates with the guide groove 55 on the outer wall of the working tube 54 to further improve the cooling speed of the outer wall of the working tube 54, thereby further achieving the effect of quickly cooling the steel, thereby improving the overall quality of the steel.

[0028] The third embodiment: Figures 1 to 8 As shown, the reinforcing mechanism 6 includes a supporting plate 61, which is configured as a semicircular tube type. The supporting plate 61 and the working tube 54 are located on the same central axis. Limiting strips 62 are inserted at both ends of the supporting plate 61. A telescopic plate 63 is fixedly connected to the upper surface of the limiting strip 62. A mounting plate 64 is fixedly connected to the top of the telescopic plate 63. The mounting plate 64 is fixedly connected to the inner surface of the snap-fit ​​cover 4 and the inner surface of the processing tank 2, respectively.

[0029] Spoilers 65 are provided above both sides of the supporting plate 61 . The spoilers 65 are arranged in an arc shape, and the tops of the spoilers 65 are tightly fitted and fixedly connected to the inner surfaces of both sides of the working tube 54 .

[0030] During operation, when cold air enters the working tube 54 through the air inlet 56, the accelerated cold air will impact the bottom of the support plate 61, and flow to both sides of the support plate 61 through the outer surface of the support plate 61, and finally impact the middle of the working tube 54 through the guidance of the spoiler 65, thereby stirring the hot air flow in the working tube 54 in a large range, forcing the hot air in the working tube 54 to be further quickly discharged from the working tube 54, that is, further improving the cooling speed of the steel, so that the steel is cooled to the required temperature more quickly, and the quality of steel production is improved. When the cold air hits the bottom of the support plate 61, the hot air in the working tube 54 is further cooled to the required temperature, and the quality of steel production is improved. When the support plate 61 is impacted, an upward push force will be applied to the support plate 61, so that the limit strips 62 at both ends of the support plate 61 squeeze the telescopic plate 63, causing the telescopic plate 63 to shrink. At the same time, the support plate 61 will be in an upward moving state, so that the two ends of the support plate 61 are constantly close to the spoiler 65, thereby reducing the gap between the support plate 61 and the spoiler 65, and greatly increasing the flow rate of the cold air, thereby further improving the discharge of hot air in the working tube 54, and further improving the cooling effect on the steel, thereby greatly improving the production quality of the steel.

[0031] A heat treatment process for processing and producing 5Ni low-temperature steel comprises the following steps: S1, connect the blower to the air inlet pipe 51, pull the snap-on cover 4 outward, and then place the steel to be heat treated into the treatment tank 2; S2, push the buckle cover 4 in the reverse direction to reset it to seal the processing tank 2, and then heat the steel in the processing tank 2; S3, after the steel is heated to the specified temperature, the blower is started, and the blower starts to cool the working pipe 54 in the processing tank 2, so that the temperature of the steel drops rapidly; S4. After the steel material is cooled to a specified temperature, the blower is turned off and the steel material is then heated to a specified temperature. The steel material is repeatedly operated back and forth to control the processing temperature of the steel material. S5. After the processing is completed, the blower is started again to cool down the interior of the processing tank 2 and the steel as a whole. When the temperature drops to a safe range, the snap-fit ​​cover 4 is pulled outward to take out the steel.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A heat treatment equipment for processing and producing 5Ni low-temperature steel, comprising a base (1), characterized in that: The base (1) is provided with two parts, a processing tank (2) is fixedly mounted on the upper surface of the base (1), the processing tank (2) is arranged horizontally, a telescopic rod (3) is horizontally fixedly connected to the outer surface of the processing tank (2), a snap-fit ​​cover (4) is fixedly connected to the output end of the telescopic rod (3), and the snap-fit ​​cover (4) is arranged to be tightly closed and snap-fitted with the processing tank (2), and further comprises: A cooling mechanism (5), the cooling mechanism (5) being fixedly installed inside the processing tank (2), and the cooling mechanism (5) being used to quickly cool the steel; A reinforcing mechanism (6), wherein the reinforcing mechanism (6) is fixedly mounted on the cooling mechanism (5), and the reinforcing mechanism (6) is also arranged inside the processing tank (2), and the reinforcing mechanism (6) is used to assist the cooling mechanism (5) in its operation; The cooling mechanism (5) comprises an air inlet pipe (51), the air inlet pipe (51) being fixedly connected to the outer surface of the bottom of the processing tank (2), an air outlet pipe (52) being arranged on the side of the air inlet pipe (51) opposite to the horizontal center line of the processing tank (2), the air outlet pipe (52) being fixedly connected to the outer surface of the top of the processing tank (2), the air inlet pipe (51) being initially in a closed state, the air outlet pipe (52) being initially in a closed state, and the air inlet pipe (51) and the air outlet pipe (52) being located on the same vertical plane.

2. The heat treatment equipment for processing and producing 5Ni low-temperature steel according to claim 1 is characterized in that: A fixing plate (53) is fixedly connected to the inner surface of the processing tank (2) in a horizontally symmetrical manner. The fixing plate (53) is arranged in an arc shape. The fixing plate (53) and the processing tank (2) are arranged in equal length. A working tube (54) is fixedly connected to the inner surface of the fixing plate (53). The working tube (54) is arranged inside the processing tank (2). The working tube (54) and the processing tank (2) are located on the same central axis. A guide groove (55) is provided on the outer surface of the working tube (54). A plurality of guide grooves (55) are provided at fixed intervals.

3. The heat treatment equipment for processing and producing 5Ni low-temperature steel according to claim 2 is characterized in that: The bottom outer surface of the working tube (54) is symmetrically penetrated with air inlet holes (56), and the top outer surface of the working tube (54) is symmetrically penetrated with air outlet holes (57). The air inlet holes (56) are evenly arranged in the guide groove (55), and the air outlet holes (57) are also evenly arranged in the guide groove (55). The air outlet holes (57) and the air outlet tube (52) are staggered.

4. The heat treatment equipment for processing and producing 5Ni low-temperature steel according to claim 3 is characterized in that: A guide plate (58) is fixedly connected to the outer surface of the bottom of the working tube (54); the inner surface of the guide plate (58) is fixedly spaced and fitted with the outer surface of the working tube (54); a connecting hole (59) is symmetrically formed through the bottom surface of the guide plate (58); the connecting hole (59) is connected to the air inlet hole (56); and the diameter of the connecting hole (59) is larger than that of the air inlet hole (56).

5. The heat treatment equipment for processing and producing 5Ni low temperature steel according to claim 4 is characterized in that: The connection hole (59) is arranged obliquely, the bottom surface edge of the guide plate (58) is fixedly connected to an isolation frame (510), the upper surface of the isolation frame (510) is arranged in contact with the bottom surface of the guide plate (58), the bottom surface of the isolation frame (510) is arranged in contact with the inner surface of the processing tank (2), and the processing tank (2) is buckled above the air inlet pipe (51).

6. The heat treatment equipment for processing and producing 5Ni low temperature steel according to claim 5, characterized in that: A flow groove (511) is horizontally provided inside the guide plate (58), and the flow groove (511) and the connection hole (59) are arranged to be in a communicating state, and the flow groove (511) is arranged not to penetrate the guide plate (58).

7. The heat treatment equipment for processing and producing 5Ni low-temperature steel according to claim 6, characterized in that: The reinforcing mechanism (6) comprises a supporting plate (61), the supporting plate (61) being arranged in a semi-circular tube shape, the supporting plate (61) and the working tube (54) being located on the same central axis, the two ends of the supporting plate (61) being plugged with limiting strips (62), the upper surface of the limiting strip (62) being fixedly connected with a telescopic plate (63), the top end of the telescopic plate (63) being fixedly connected with a mounting plate (64), the mounting plate (64) being fixedly connected to the inner surface of the snap-fit ​​cover (4) and the inner surface of the processing tank (2), respectively.

8. The heat treatment equipment for processing and producing 5Ni low-temperature steel according to claim 7, characterized in that: Spoilers (65) are provided above both sides of the support plate (61); the spoilers (65) are arranged in an arc shape; the tops of the spoilers (65) are tightly fitted and fixedly connected to the inner surfaces of both sides of the working tube (54).

9. A heat treatment process for processing and producing 5Ni low-temperature steel, characterized in that: The following steps are involved: S1, connect the blower to the air inlet pipe (51), pull the snap-fit ​​cover (4) outward, and then place the steel to be heat-treated into the treatment tank (2); S2, pushing the buckle cover (4) in the reverse direction to reset it to seal the processing tank (2), and then heating the steel in the processing tank (2); S3, after the steel is heated to a specified temperature, the blower is started, and the blower starts to cool the working pipe (54) in the processing tank (2) in an all-round way, so that the temperature of the steel drops rapidly; S4. After the steel material is cooled to a specified temperature, the blower is turned off and the steel material is then heated to a specified temperature. The steel material is repeatedly operated back and forth to control the processing temperature of the steel material. S5. After the processing is completed, the blower is started again to cool down the interior of the processing tank (2) and the steel as a whole. When the temperature drops to a safe range, the snap-fit ​​cover (4) is pulled outward to remove the steel.

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