Heat treatment process for strengthening surface hardness of bearing ring

Abstract

The invention discloses a heat treatment process for strengthening the surface hardness of a bearing ring, which comprises the following steps: S1, starting a quenching device, S2, placing a bearing ring body on a feeding conveying belt, and then starting the feeding conveying belt, S3, conveying the bearing ring body to an intermittent material taking mechanism in the quenching device by the feeding conveying belt, and S4, feeding the bearing ring body to a quenching device. The method comprises the steps of S1, feeding a bearing ring body to an intermittent material taking mechanism, S2, feeding the bearing ring body to an intermittent material taking mechanism, S4, heating the bearing ring body by a heating mechanism arranged on the intermittent material taking mechanism, S5, cooling the bearing ring body after heating is finished, and S6, feeding the bearing ring body to a water blowing mechanism for water blowing and air drying after the bearing ring body is cooled. And after material taking, heating can be directly carried out on the intermittent material taking mechanism, when heating is finished, the bearing ring body is automatically separated from the assembling hole under the dead weight of the bearing ring body, the structure is simpler and more stable, additional material taking pieces and driving sources are not needed, and the operation cost and the manufacturing cost are effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment of bearing rings, in particular to a heat treatment process for strengthening the surface hardness of a bearing ring. Background Art

[0002] The bearing ring is a protective sleeve that wraps the bearing ball on the outside of the bearing and is an important part of the bearing. During the production process of the bearing, it is usually divided into hot pressing, turning and cold rolling. Regardless of the forming method, it needs to undergo heat treatment quenching and tempering processes after forming to improve the rigidity, hardness, wear resistance, fatigue strength and toughness of the bearing ring.

[0003] A Chinese patent with announcement number CN114622084B discloses heat treatment equipment suitable for cylindrical roller bearing rings, including a mounting assembly, wherein a heating component is rotatably mounted at the middle position of the mounting assembly, and the heating parts for heat treatment are arranged in multiple groups, so that the heating components can heat multiple groups of bearing rings at the same time. A feed assembly arranged at the rear end of the heating component has the function of assisting in guiding the incoming bearing rings, and a control component on the feed assembly can allow the bearing rings to fall stably toward the guide assembly, which is fixed on the top of the heating component. The lifting assembly will lift the bearing ring from the heating component, allowing the bearing ring to stably detach from the heating part of the heating component, thereby achieving a stable entry and exit effect of the bearing ring, facilitating subsequent heat treatment, and solving the problem that the existing heat treatment equipment is difficult to align for heating, and can only heat one group of bearing inner rings, resulting in reduced production efficiency of the bearing inner rings.

[0004] When the heat treatment equipment for the bearing ring is used, the lifting assembly is used in conjunction with the material unloading belt for unloading. The overall structure is complex and requires additional power to drive the material unloading belt to operate, resulting in high operating and manufacturing costs.

[0005] Therefore, we propose a heat treatment process to enhance the surface hardness of the bearing ring. Summary of the invention

[0006] The purpose of the present invention is to provide a heat treatment process for strengthening the surface hardness of a bearing ring, so as to solve the technical problems that the existing heat treatment equipment for bearing rings uses a lifting assembly in conjunction with a feeding belt for feeding, has a complex structure, requires additional power to drive the feeding belt, and has high operating and manufacturing costs.

[0007] To achieve the above object, the present invention provides the following technical solution: a heat treatment process for strengthening the surface hardness of a bearing ring, comprising the following steps:

[0008] S1, start the quenching device for heat treatment of the bearing ring body;

[0009] S2, placing the bearing ring body on the feeding conveyor belt in the quenching device, and then starting the feeding conveyor belt;

[0010] S3, the feeding conveyor belt conveys the bearing ring body to the intermittent feeding mechanism in the quenching device;

[0011] S4, a heating mechanism arranged on the intermittent material taking mechanism heats the bearing ring body;

[0012] S5. After the heating is completed, the bearing ring body heated on the intermittent feeding mechanism is transported to the cooling mechanism in the quenching device for cooling;

[0013] S6. After the cooling of the bearing ring body is completed, the bearing ring body is transported to the water blowing mechanism in the quenching device for water blowing and air drying.

[0014] As a further solution of the present invention, the loading conveyor belt is on a first support frame, and a fixed seat is fixedly installed on the first support frame near the discharge port of the loading conveyor belt. The fixed seat is fixedly connected to a drop pipe through a connecting block, and an arc-shaped limit block is fixedly connected to the top of the drop pipe. The bottom of the drop pipe is located directly above the intermittent feeding mechanism.

[0015] As a further solution of the present invention, the intermittent material taking mechanism comprises a second support frame, a drive motor, a cam divider and a rotating disk, the drive motor and the cam divider are both fixedly mounted on the top of the second support frame, the rotating shaft of the drive motor is fixedly connected to the power input end of the cam divider, the power output end of the cam divider is fixedly connected to the bottom of the rotating disk, and a plurality of assembly holes are opened on the rotating disk, and the plurality of assembly holes are distributed in a ring array;

[0016] The heating mechanism includes a high-frequency heating coil and a high-frequency heating power supply for supplying power to the high-frequency heating coil, and the high-frequency heating coil is fixedly installed in each of the assembly holes;

[0017] The bottom of the assembly hole is fixedly connected with a hinge seat, and the hinge seat is rotatably connected with a bottom cover, and the bottom cover can block the bottom of the assembly hole;

[0018] An arc-shaped support block is arranged below the bottom cover, and the arc-shaped support block is fixed above the second support frame through a support column, and the bottom of the arc-shaped support block can abut against the bottom of the bottom cover, so that the bottom cover can block the bottom of the assembly hole, thereby preventing the bearing ring body in the assembly hole from falling out of the assembly hole;

[0019] When the bottom cover rotates to the notch of the arc-shaped support block, the bottom cover loses the support of the arc-shaped support block. At this time, the bearing ring body in the assembly hole opens the bottom cover under the gravity of its own weight and then detaches from the assembly hole.

[0020] As a further solution of the present invention, a counterweight is fixedly connected to the bottom of one end of the bottom cover close to the hinge seat. When the bearing ring body in the assembly hole opens the bottom cover and falls out of the assembly hole, the bottom cover blocks the bottom of the assembly hole again under the weight of the counterweight.

[0021] As a further solution of the present invention, an inclined guide block is fixedly connected to one end of the notch of the arc-shaped support block, so that the opened bottom cover can be re-blocked at the bottom of the assembly hole along with the inclined guide block.

[0022] As a further solution of the present invention, a limiting protrusion is formed on the lower end of the hinge seat, so that when the bottom cover is opened, the counterweight block has a certain angle with the vertical direction, and the angle is not less than 20°.

[0023] As a further solution of the present invention, the cooling mechanism includes a cooling trough, the interior of the cooling trough is provided with cooling water for cooling the heated bearing ring body, the second support frame is fixedly connected with a guide plate for guiding the bearing ring body falling from the assembly hole into the cooling trough, and the cooling trough is provided with a transfer conveyor belt for transporting the cooled bearing ring body to the water blowing mechanism.

[0024] As a further solution of the present invention, the water blowing mechanism includes a third support frame, a mounting cover is fixedly connected to the third support frame, and a water blowing fan for blowing water and air drying the bearing ring body is installed on the mounting cover.

[0025] As a further solution of the present invention, a guide trough body is fixedly installed at the bottom of the mounting frame of the transfer conveyor belt, and the water outlet of the guide trough body is connected to the inner upper end of the cooling trough.

[0026] As a preferred solution of the present invention, a protective cover is fixedly installed on the top of the rotating disk, and the high-frequency heating power supply is located inside the protective cover.

[0027] Compared with the prior art, the heat treatment process for strengthening the surface hardness of the bearing ring of the present invention has the following beneficial effects: the present invention can intermittently take materials from the bearing ring body by setting an intermittent feeding mechanism in conjunction with a heating mechanism, and can directly heat the intermittent feeding mechanism after taking materials. When the heating is completed, the bearing ring body automatically detaches from the assembly hole under its own weight. The structure is more streamlined and stable, and no additional feeding parts and driving sources are required, which effectively reduces operating costs and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only examples of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic structural diagram of a heat treatment device in an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0031] Figure 3 The structure of the intermittent material taking mechanism in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0032] Figure 4 The structure of the intermittent material taking mechanism in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0033] Figure 5 The structure of the intermittent material taking mechanism in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0034] Figure 6 It is a schematic cross-sectional structural diagram of the hinge seat in an embodiment of the present invention;

[0035] Figure 7 Schematic diagram of the structure of the cooling mechanism in an embodiment of the present invention.

[0036] 1. The first support frame; 101. The fixed seat; 102. The connecting block; 2. The feeding conveyor belt; 201. The arc-shaped limit block; 202. The drop pipe; 3. The intermittent material taking mechanism; 301. The second support frame; 302. The driving motor; 303. The cam divider; 304. The rotating disk; 305. The assembly hole; 3051. The hinge seat; 3052. The limit protrusion; 306. The bottom cover; 3061. The counterweight block; 307. The guide plate; 308. The arc-shaped support plate; 3081. The inclined guide block; 309. The support column; 4. The heating mechanism; 401. The high-frequency heating coil; 402. The protective cover; 5. The cooling mechanism; 501. The cooling trough; 502. The transfer conveyor belt; 6. The water blowing mechanism; 601. The third support frame; 602. The mounting cover; 603. The water blowing fan; 604. The guide trough body. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the embodiments of the present invention.

[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0040] See also Figures 1 to 7 As shown, a heat treatment process for strengthening the surface hardness of a bearing ring according to an embodiment of the present invention comprises the following steps:

[0041] S1, starting a quenching device for heat treatment of the bearing ring body 7;

[0042] S2, placing the bearing ring body 7 on the feeding conveyor belt 2 in the quenching device, and then starting the feeding conveyor belt 2;

[0043] S3, the feeding conveyor belt 2 conveys the bearing ring body 7 to the intermittent feeding mechanism 3 in the quenching device;

[0044] S4, the heating mechanism 4 arranged on the intermittent material taking mechanism 3 heats the bearing ring body 7;

[0045] S5, after the heating is completed, the bearing ring body 7 heated on the intermittent material taking mechanism 3 is transported to the cooling mechanism 5 in the quenching device for cooling treatment;

[0046] S6. After the cooling of the bearing ring body 7 is completed, the bearing ring body 7 is transported to the water blowing mechanism 6 in the quenching device for water blowing and air drying.

[0047] The feeding conveyor belt 2 is on the first support frame 1, and a fixed seat 101 is fixedly installed on the first support frame 1 near the discharge port of the feeding conveyor belt 2. The fixed seat 101 is fixedly connected to a drop pipe 202 through a connecting block 102. The top of the drop pipe 202 is fixedly connected to an arc-shaped limit block 201, and the bottom of the drop pipe 202 is located directly above the intermittent feeding mechanism 3.

[0048] When the bearing ring body 7 at the bottom of the blanking tube 202 is taken away by the intermittent feeding mechanism 3, the bearing ring body 7 inside the blanking tube 202 moves downward, and when the feeding conveyor belt 2 transports the bearing ring body 7 to the discharge port of the feeding conveyor belt 2, the bearing ring body 7 is blocked by the arc-shaped limit block 201. At this time, the bearing ring body 7 on the feeding conveyor belt 2 is pushed to the top of the blanking tube 202, and the cycle is repeated.

[0049] See also Figure 3-5 As shown, the intermittent feeding mechanism 3 includes a second support frame 301, a driving motor 302, a cam divider 303 and a rotating disk 304. The driving motor 302 and the cam divider 303 are both fixedly mounted on the top of the second support frame 301. The rotating shaft of the driving motor 302 is fixedly connected to the power input end of the cam divider 303. The power output end of the cam divider 303 is fixedly connected to the bottom of the rotating disk 304. A plurality of assembly holes 305 are opened on the rotating disk 304, and the plurality of assembly holes 305 are distributed in a circular array.

[0050] The heating mechanism 4 includes a high-frequency heating coil 401 and a high-frequency heating power supply for powering the high-frequency heating coil 401. A high-frequency heating coil 401 is fixedly installed in each assembly hole 305. In order to protect the high-frequency heating power supply, a protective cover 402 is fixedly installed on the top of the rotating disk 304. The high-frequency heating power supply is located inside the protective cover 402, and a heat dissipation hole is opened on the protective cover 402.

[0051] The bottom of the assembly hole 305 is fixedly connected with a hinge seat 3051 , and the hinge seat 3051 is rotatably connected with a bottom cover 306 , and the bottom cover 306 can block the bottom of the assembly hole 305 .

[0052] An arc-shaped support block 308 is arranged below the bottom cover 306, and the arc-shaped support block 308 is fixed above the second support frame 301 through a support column 309. The bottom of the arc-shaped support block 308 can be against the bottom of the bottom cover 306, so that the bottom cover 306 can block the bottom of the assembly hole 305, thereby preventing the bearing ring body 7 in the assembly hole 305 from falling out of the assembly hole 305.

[0053] When the bottom cover 306 rotates to the notch of the arc-shaped support block 308 , the bottom cover 306 loses the support of the arc-shaped support block 308 . At this time, the bearing ring body 7 in the assembly hole 305 opens the bottom cover 306 under the gravity of its own weight and then detaches from the assembly hole 305 .

[0054] In order to ensure that the bottom cover 306 can stably block the bottom of the assembly hole 305 again, a counterweight block 3061 is fixedly connected to the bottom of one end of the bottom cover 306 close to the hinge seat 3051. When the bearing ring body 7 in the assembly hole 305 opens and the bottom cover 306 falls out of the assembly hole 305, the bottom cover 306 blocks the bottom of the assembly hole 305 again under the weight of the counterweight block 3061.

[0055] One end of the notch of the arc-shaped support block 308 is fixedly connected with an inclined guide block 3081 , so that the opened bottom cover 306 can be re-blocked at the bottom of the assembly hole 305 along with the inclined guide block 3081 .

[0056] When in use, start the drive motor 302, and drive the rotating disk 304 to rotate intermittently through the cam divider 303. When the empty assembly hole 305 moves to the bottom of the blanking tube 202, the bearing ring body 7 at the bottom of the blanking tube 202 falls into the assembly hole 305. At this time, the arc support block 308 supports the bottom cover 306, and then start the high-frequency heating coil 401 to heat the bearing ring body 7 in the assembly hole 305. When the bearing ring body 7 in the assembly hole 305 rotates to the notch of the arc support block 308, the bottom cover 306 loses the support of the arc support block 308, and the bearing ring body 7 opens the bottom cover 306 under the gravity of its own weight and falls from the assembly hole 305. When the bearing ring body 7 falls from the assembly hole 305, the bottom cover 306 blocks the bottom of the assembly hole 305 again under the weight of the counterweight block 3061.

[0057] As the rotating disk 304 continues to rotate, if the bottom cover 306 fails to completely block the bottom of the assembly hole 305, the bottom cover 306 will rotate back toward the assembly hole 305 along with the inclined guide block 3081, and finally block the bottom of the assembly hole 305 to prepare for heating the next bearing ring body 7.

[0058] See also Figure 6 As shown, in order to ensure that the counterweight block 3061 can rotate downward again, a limiting protrusion 3052 is formed at the lower end of the hinge seat 3051, so that when the bottom cover 306 is opened, the counterweight block 3061 has a certain angle with the vertical direction, and the angle is not less than 20°.

[0059] See also Figure 7As shown, the cooling mechanism 5 includes a cooling groove 501, and the interior of the cooling groove 501 is provided with cooling water for cooling the heated bearing ring body 7, and the second support frame 301 is fixedly connected with a guide plate 307 for guiding the bearing ring body 7 dropped from the assembly hole 305 to the cooling groove 501, and the cooling groove 501 is provided with a transfer conveyor belt 502 for transporting the cooled bearing ring body 7 to the water blowing mechanism 6. The heated bearing ring body 7 can be quickly cooled by the cooling mechanism 5.

[0060] The blowing mechanism 6 includes a third support frame 601, to which a mounting cover 602 is fixedly connected, and a blowing fan 603 for blowing water and air-drying the bearing ring body 7 is installed on the mounting cover 602. The blowing fan 603 can be set to blow away water stains on the bearing ring body 7, so that the bearing ring body 7 can be quickly dried.

[0061] In order to facilitate the recovery of the purged water stains, a guide trough body 604 is fixedly installed at the bottom of the mounting frame of the transfer conveyor belt 502. The water outlet of the guide trough body 604 is connected to the inner upper end of the cooling trough 501. It should be noted that a water leakage hole is opened on the transfer conveyor belt 502.

[0062] When the embodiment of the present invention is used, the bearing ring body 7 is placed on the feeding conveyor belt 2, the feeding conveyor belt 2 and the driving motor 302 are started, and then the rotating disk 304 is driven to rotate intermittently through the cam divider 303. When the empty assembly hole 305 moves to the bottom of the blanking tube 202, the bearing ring body 7 at the bottom of the blanking tube 202 falls into the assembly hole 305. At this time, the arc-shaped support block 308 supports the bottom cover 306, and the high-frequency heating coil 401 is used to heat the assembly hole 305. The bearing ring body 7 in the hole 305 is heated, and when the bearing ring body 7 in the assembly hole 305 rotates to the gap of the arc-shaped support block 308, the bottom cover 306 loses the support of the arc-shaped support block 308, and the bearing ring body 7 opens the bottom cover 306 under the gravity of its own weight and falls out of the assembly hole 305. After the bearing ring body 7 falls out of the assembly hole 305, the bottom cover 306 blocks the bottom of the assembly hole 305 again under the weight of the counterweight block 3061.

[0063] As the rotating disk 304 continues to rotate, if the bottom cover 306 fails to completely block the bottom of the assembly hole 305, the bottom cover 306 will rotate back toward the assembly hole 305 along with the inclined guide block 3081, and finally block the bottom of the assembly hole 305 to prepare for heating the next bearing ring body 7. The bearing ring body 7 that falls into the cooling groove 501 is cooled and then transported to the water blowing fan 603 through the transfer conveyor belt 502 for water blowing and air drying.

[0064] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat treatment process for strengthening the surface hardness of a bearing ring, characterized in that The following steps are involved: S1, starting a quenching device for heat treating the bearing ring body (7); S2, placing the bearing ring body (7) on the loading conveyor belt (2) in the quenching device, and then starting the loading conveyor belt (2); S3, the feeding conveyor belt (2) conveys the bearing ring body (7) to the intermittent feeding mechanism (3) in the quenching device; S4, a heating mechanism (4) disposed on the intermittent material taking mechanism (3) heats the bearing ring body (7); S5, after the heating is completed, the bearing ring body (7) heated on the intermittent material taking mechanism (3) is transported to the cooling mechanism (5) in the quenching device for cooling; S6. After the cooling of the bearing ring body (7) is completed, the bearing ring body (7) is transported to the water blowing mechanism (6) in the quenching device for water blowing and air drying.

2. A heat treatment process for strengthening the surface hardness of a bearing ring according to claim 1, characterized in that: The feeding conveyor belt (2) is on a first support frame (1); a fixing seat (101) is fixedly installed on the first support frame (1) near the discharge port of the feeding conveyor belt (2); the fixing seat (101) is fixedly connected to a feeding pipe (202) via a connecting block (102); an arc-shaped limiting block (201) is fixedly connected to the top of the feeding pipe (202); and the bottom of the feeding pipe (202) is located directly above the intermittent feeding mechanism (3).

3. A heat treatment process for strengthening the surface hardness of a bearing ring according to claim 2, characterized in that: The intermittent material taking mechanism (3) comprises a second support frame (301), a driving motor (302), a cam divider (303) and a rotating disk (304); the driving motor (302) and the cam divider (303) are both fixedly mounted on the top of the second support frame (301); the rotating shaft of the driving motor (302) is fixedly connected to the power input end of the cam divider (303); the power output end of the cam divider (303) is fixedly connected to the bottom of the rotating disk (304); a plurality of assembly holes (305) are provided on the rotating disk (304); the plurality of assembly holes (305) are distributed in a ring array; The heating mechanism (4) comprises a high-frequency heating coil (401) and a high-frequency heating power supply for supplying power to the high-frequency heating coil (401), and the high-frequency heating coil (401) is fixedly installed in each of the assembly holes (305); The bottom of the assembly hole (305) is fixedly connected to a hinge seat (3051), and a bottom cover (306) is rotatably connected to the hinge seat (3051), and the bottom cover (306) is capable of sealing the bottom of the assembly hole (305); An arc-shaped support block (308) is provided below the bottom cover (306); the arc-shaped support block (308) is fixed above the second support frame (301) via a support column (309); the bottom of the arc-shaped support block (308) can abut against the bottom of the bottom cover (306), so that the bottom cover (306) can block the bottom of the assembly hole (305), thereby preventing the bearing ring body (7) in the assembly hole (305) from falling out of the assembly hole (305); When the bottom cover (306) rotates to the notch of the arc-shaped support block (308), the bottom cover (306) loses the support of the arc-shaped support block (308). At this time, the bearing ring body (7) in the assembly hole (305) opens the bottom cover (306) under the gravity of its own weight, and then detaches from the assembly hole (305).

4. A heat treatment process for strengthening the surface hardness of a bearing ring according to claim 3, characterized in that: A counterweight (3061) is fixedly connected to the bottom of one end of the bottom cover (306) close to the hinge seat (3051); when the bearing ring body (7) in the assembly hole (305) opens the bottom cover (306) and falls out of the assembly hole (305), the bottom cover (306) blocks the bottom of the assembly hole (305) again under the weight of the counterweight (3061).

5. A heat treatment process for strengthening the surface hardness of a bearing ring according to claim 4, characterized in that: An inclined guide block (3081) is fixedly connected to one end of the notch of the arc-shaped support block (308), so that the opened bottom cover (306) can be re-blocked at the bottom of the assembly hole (305) along with the inclined guide block (3081).

6. A heat treatment process for strengthening the surface hardness of a bearing ring according to claim 5, characterized in that: A limiting protrusion (3052) is formed at the lower end of the hinge seat (3051), so that when the bottom cover (306) is opened, the counterweight block (3061) has a certain angle with the vertical direction, and the angle is not less than 20°.

7. A heat treatment process for strengthening the surface hardness of a bearing ring according to claim 6, characterized in that: The cooling mechanism (5) comprises a cooling groove (501), wherein cooling water is arranged inside the cooling groove (501) for cooling the heated bearing ring body (7), a guide plate (307) is fixedly connected to the second support frame (301) for guiding the bearing ring body (7) that falls from the assembly hole (305) into the cooling groove (501), and a transfer conveyor belt (502) is arranged inside the cooling groove (501) for conveying the cooled bearing ring body (7) to the water blowing mechanism (6).

8. The heat treatment process for strengthening the surface hardness of a bearing ring according to claim 7, characterized in that: The water blowing mechanism (6) comprises a third support frame (601), a mounting cover (602) is fixedly connected to the third support frame (601), and a water blowing fan (603) for blowing water and air drying the bearing ring body (7) is installed on the mounting cover (602).

9. A heat treatment process for strengthening the surface hardness of a bearing ring according to claim 8, characterized in that: A guide trough body (604) is fixedly mounted at the bottom of the mounting frame of the transfer conveyor belt (502), and a water outlet of the guide trough body (604) is connected to the inner upper end of the cooling trough (501).

10. The heat treatment process for strengthening the surface hardness of a bearing ring according to claim 3, characterized in that: A protective cover (402) is fixedly mounted on the top of the rotating disk (304), and the high-frequency heating power source is located inside the protective cover (402).

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