Surface induction quenching equipment, system and method for thin-wall ring piece

Abstract

The invention provides thin-wall ring part surface induction quenching equipment, system and method, and relates to the technical field of heat treatment. The equipment comprises a first sensor, a second sensor, a sprayer and a first bracket, each of the first inductor and the second inductor comprises a magnetizer and an induction coil; the magnetizer and the induction coil are located on the two sides of the thin-wall ring piece respectively. The first inductor and the second inductor are both used for performing induction heating on the two quenching surfaces; the spray thrower comprises a cavity box, and a first spray thrower and a second spray thrower which are fixedly mounted on the cavity box; wherein the first spray thrower and the second spray thrower are located on the two sides of the thin-wall ring piece correspondingly; the first sensor, the second sensor and the sprayer are sequentially and fixedly installed on the first support. According to the equipment, the deformation degree of the thin-wall ring piece can be effectively reduced from the source while it is guaranteed that operation is easy and convenient.

Description

Technical Field

[0001] The present application relates to the field of heat treatment technology, and in particular to a thin-walled ring surface induction quenching device, system and method. Background Art

[0002] With the development of industrial technology, various types of engineering machinery also play a huge role. In order to ensure the safety of mechanical products, various parts need to be heat treated to improve the mechanical properties of the parts. In order to improve the wear resistance of the surface of the parts and the toughness of the core, surface quenching is usually used for processing. However, various mechanical parts have different degrees of deformation during the surface quenching process, especially thin-walled rings.

[0003] To solve the problem of surface deformation of thin-walled rings during induction quenching, cold correction and hot correction methods are mainly used. However, these methods are complicated to operate and have poor effects, and fail to reduce the degree of quenching deformation of thin-walled rings from the source.

[0004] While ensuring easy operation, the deformation degree of thin-walled ring parts can be effectively reduced from the source, which is a problem that needs to be solved by the present invention. Summary of the invention

[0005] The present application provides a thin-walled ring surface induction hardening device, system and method, which are used to ensure simple operation while effectively reducing the deformation degree of the thin-walled ring from the source.

[0006] In a first aspect, the present application provides a thin-walled ring surface induction quenching device, which is used to perform induction quenching on a thin-walled ring to obtain a hardened layer located on both sides of the thin-walled ring. The thin-walled ring surface induction quenching device includes: a first inductor, a second inductor, a sprayer, and a first bracket;

[0007] The first inductor and the second inductor both include: a magnetic conductor and an induction coil; wherein the magnetic conductor and the induction coil are respectively located on two sides of the thin-walled ring;

[0008] The first inductor and the second inductor are both used to perform induction heating on the two quenching surfaces; wherein the heating temperature of the first inductor is lower than the heating temperature of the second inductor;

[0009] The sprayer comprises: a cavity box, and a first sprayer and a second sprayer fixedly mounted on the cavity box; wherein the first sprayer and the second sprayer are respectively located on two sides of the thin-walled ring;

[0010] A sprayer, used for spray cooling the two quenching surfaces through a first sprayer and a second sprayer;

[0011] The first sensor, the second sensor, and the sprinkler are fixedly mounted on the first bracket in sequence.

[0012] In a possible design, the magnetic conductors of the first inductor and the second inductor are both rectangular whole pieces of ferrite, so that the shapes of the heating areas of the first inductor and the second inductor are both rectangular.

[0013] In a possible design, a positioning device is provided on the first bracket;

[0014] The positioning device can be adjusted according to the position of the thin-walled ring, so as to make the distance between the thin-walled ring and the corresponding magnetic conductor a preset distance, and to align the center lines of the two quenching surfaces with the center lines of the corresponding heating areas.

[0015] In one possible design, each induction coil is a copper tube;

[0016] The magnetic conductors of the first inductor and the second inductor are each provided with a groove matching the corresponding copper tube, so as to facilitate the connection between the magnetic conductor and the induction coil.

[0017] In one possible design, the first sprayer is located directly above the second sprayer, and the two quenching surfaces are arranged one above the other;

[0018] The sprayer also includes: a water guide trough fixedly mounted behind the cavity box and the second sprayer;

[0019] The water guide groove is arranged on a side away from the second sensor;

[0020] The first sprayer and the second sprayer are respectively used to spray quenching liquid onto the two quenching surfaces; wherein the quenching liquid sprayed by the first sprayer is used to flow on the upper surface of the thin-walled ring so as to cool the quenching surface located on the upper side; the quenching liquid sprayed by the second sprayer is used to flow through the water guide groove close to the lower surface of the thin-walled ring so as to cool the quenching surface located on the lower side.

[0021] In a possible design, the first sprayer and the second sprayer each include: a plurality of water outlet holes;

[0022] The number of the multiple water outlet holes of the first sprinkler is equal to the number of the multiple water outlet holes of the second sprinkler.

[0023] In a possible design, the sprinkler further includes: a first water inlet hole and a second water inlet hole;

[0024] The cavity box comprises a first water inlet hole and a second water inlet hole, so that the quenching liquid is supplied to the first sprayer through the first water inlet hole and the cavity box, and the quenching liquid is supplied to the second sprayer through the second water inlet hole and the cavity box.

[0025] In one possible design, the first water inlet hole and the second water inlet hole are not interconnected, and the quenching liquid flow rate of the first water inlet hole is smaller than the quenching liquid flow rate of the second water inlet hole, so that the quenching liquid spraying flow rate on the upper surface of the thin-walled ring is equal to the quenching liquid spraying flow rate on the lower surface of the thin-walled ring.

[0026] In a second aspect, the present application provides a thin-walled ring surface induction quenching system, comprising: a pushing device, and a thin-walled ring surface induction quenching device;

[0027] The pushing device is used to push the thin-walled ring to the thin-walled ring surface induction quenching equipment;

[0028] The thin-walled ring surface induction hardening equipment is used to perform induction hardening on the thin-walled ring to obtain a hardened layer on both sides of the thin-walled ring.

[0029] In a third aspect, the present application provides a method for induction hardening of a thin-walled ring surface, the method being applied to a thin-walled ring surface induction hardening device, the thin-walled ring surface induction hardening device comprising a first inductor, a second inductor and a sprayer, and the method comprising:

[0030] Preheating the quenching surfaces on both sides of the thin-walled ring by means of a first inductor;

[0031] The two quenched surfaces are heated for a second time by a second inductor; wherein the heating temperature of the first inductor is lower than the heating temperature of the second inductor;

[0032] The two quenching surfaces are spray cooled by the sprayer.

[0033] The present application provides a thin-walled ring surface induction quenching equipment, system and method, wherein the first inductor and the second inductor both include: a magnetic conductor and an induction coil; wherein the magnetic conductor and the induction coil are respectively located on both sides of the thin-walled ring; the first inductor and the second inductor are both used for induction heating of the two quenching surfaces; wherein the heating temperature of the first inductor is lower than the heating temperature of the second inductor; the sprayer includes: a cavity box, and the first sprayer and the second sprayer fixedly mounted on the cavity box; wherein the first sprayer and the second sprayer are respectively located on both sides of the thin-walled ring; the sprayer is used for spray cooling the two quenching surfaces through the first sprayer and the second sprayer; the first inductor, the second inductor, and the sprayer are fixedly mounted on the first bracket in sequence. The following technical effects are achieved: heating is performed by dual inductors, which reduces the heating rate during the heating process, thereby reducing the probability of cracking and reducing the deformation; through the design of the inductor, the uniform distribution of the magnetic field is accurately controlled by using a magnetic conductor, the width range of heating is controlled, no unnecessary heating range is generated, the total heat is reduced, and it is beneficial to control the deformation problem of thin-walled rings, and magnetic conductors are installed at the bends of the copper tubes to strengthen the magnetic field at the corresponding position and ensure the uniformity of the hardened layer of the thin-walled rings; through the design of the sprayer, the cooling rate of the two quenching surfaces during the cooling of the workpiece can be made consistent, that is, the same cooling environment of the two quenching surfaces is guaranteed, the temperature control of the cooling process is achieved, and the deformation can be effectively reduced; the sprayer and the inductor are connected by a bracket, which can ensure that the thin-walled rings are quenched according to the process of cooling after line heating, thereby ensuring the realization of the specific steps of the present invention, effectively reducing the difficulty of operation, and effectively reducing the deformation of the thin-walled rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of a thin-walled ring surface induction quenching device provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of a thin-walled ring hardening layer of a thin-walled ring surface induction quenching device provided in an embodiment of the present application;

[0037] Figure 3 A schematic diagram of a thin-walled ring surface induction quenching device provided in an embodiment of the present application;

[0038] Figure 4A schematic diagram of an inductor of a thin-walled ring surface induction hardening device provided in an embodiment of the present application;

[0039] Figure 5 A schematic diagram of an inductor and a workpiece of a thin-walled ring surface induction hardening device provided in an embodiment of the present application;

[0040] Figure 6 A schematic diagram of a sprayer for a thin-walled ring surface induction quenching device provided in an embodiment of the present application;

[0041] Figure 7 A schematic flow chart of a method for surface induction hardening of a thin-walled ring provided in an embodiment of the present application.

[0042] Reference numerals:

[0043] 100-Pushing equipment; 200-Thin-wall ring surface induction hardening equipment; 300-Connecting bracket; 400-Thin-wall ring;

[0044] 210 - first sensor; 220 - second sensor; 230 - sprinkler; 240 - first bracket;

[0045] 211-magnetic conductor; 212-induction coil;

[0046] 231-first sprinkler; 232-second sprinkler; 233-water guide groove; 234-first water inlet hole; 235-second water inlet hole; 236-water outlet hole; 237-cavity box;

[0047] 410-hardened layer; 420-hardened layer transition zone; 430-reservation zone. DETAILED DESCRIPTION

[0048] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0049] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way. In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more.

[0050] It should be noted that the “at…” in the embodiments of the present application may be the instant when a certain situation occurs, or may be a period of time after the occurrence of a certain situation, and the embodiments of the present application do not specifically limit this.

[0051] In order to clearly describe the technical solutions of the embodiments of the present application, some terms and technologies involved in the embodiments of the present application are briefly introduced below:

[0052] Thin-walled ring parts: Thin-walled ring parts refer to engineering parts or components with relatively small wall thickness. In this application, it can be understood as thin-walled ring parts, thin-walled plate parts and thin-walled special-shaped parts, etc., which have the advantages of light weight and material saving.

[0053] Surface induction hardening: Surface induction hardening is a heat treatment process that is mainly used to improve the hardness and wear resistance of the metal workpiece surface while maintaining the toughness and ductility of the core. This process is usually applied to key components such as gears, shafts, piston pins, cams, etc. that are subject to high stress and wear.

[0054] Hardened layer: The hardened layer refers to the high hardness layer formed on the surface of the metal workpiece after quenching. Quenching is a heat treatment process that heats the metal to a certain temperature (usually above the critical point) and then rapidly cools it to form martensite or other high hardness phases on the metal surface, thereby improving the hardness, wear resistance and fatigue strength of the metal surface.

[0055] With the rapid development of various industrial technologies, construction machinery is playing an increasingly important role. The performance of various parts also affects the function of machinery. Therefore, for workpieces, their mechanical properties are particularly important.

[0056] Affected by comprehensive factors such as surface induction quenching position, hardened layer width, hardened layer depth, temperature uniformity, etc., various mechanical parts will have different degrees of deformation during the surface induction quenching process, among which thin-walled rings are the most prominent.

[0057] Regarding the problem of surface quenching deformation of thin-walled rings in the prior art, the deformation degree is usually reduced by external force; or the deformation problem of thin-walled rings is solved by a thermal correction method that heats and quickly lowers the temperature to the crystallization temperature.

[0058] However, there are some technical problems in reducing the deformation of thin-walled rings by thermal correction or cold correction:

[0059] First, such methods need to be modified according to the size and shape of the parts, and the corresponding processes and procedures are low in versatility and complex in operation.

[0060] Secondly, although this method uses external force or heating and cooling methods to control the deformation, the control effect is not good, and the surface hardening layer of the workpiece may also be affected by various factors.

[0061] Considering that most existing parts use surface induction quenching to control deformation, the present application implements induction quenching deformation of thin-walled rings through a quenching machine tool.

[0062] Therefore, it is an urgent problem to be solved by the present invention to effectively reduce the deformation degree of the thin-walled ring from the source while ensuring the ease of operation.

[0063] Based on this, the embodiments of the present application provide a thin-walled ring surface induction quenching device, system and method, which can be used in the field of heat treatment technology, aiming to solve the above technical problems of the prior art.

[0064] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0065] Figure 1 A schematic diagram of a thin-walled ring surface induction hardening device provided in an embodiment of the present application. The schematic diagram of the scenario can be used in various scenarios described below, and can also be used in other scenarios not specified. It should be noted that: Figure 1 These are merely examples to which the embodiments of the present application can be applied, to help those skilled in the art understand the technical content of the present application, but do not mean that the embodiments of the present application cannot be used in other devices, systems, environments or scenarios.

[0066] like Figure 1 , a schematic diagram of a thin-walled ring surface induction hardening device is shown, including: a pushing device 100 and a thin-walled ring surface induction hardening device 200; a connecting bracket 300 and a thin-walled ring 400. The pushing device 100 and the thin-walled ring surface induction hardening device 200 are connected via the connecting bracket 300.

[0067] The pushing device 100 is used to push the thin-walled ring 400 to the thin-walled ring surface induction hardening device 200;

[0068] The thin-walled ring surface induction hardening equipment 200 is used to perform induction hardening on the thin-walled ring 400 to obtain hardened layers on both sides of the thin-walled ring 400 .

[0069] The pushing device 100 pushes the thin-walled ring 400 to move in the quenching direction of the thin-walled ring surface induction quenching device 200. The pushing device 100 can be located in front of or behind the thin-walled ring surface induction quenching device 200 in the quenching direction, and the pushing device 100 can be a mechanical pusher, a conveyor belt, or other commonly used pushing methods in the art.

[0070] When the thin-walled ring 400 reaches the position to be processed, the thin-walled ring surface induction quenching equipment 200 quenches the thin-walled ring 400 .

[0071] Figure 2 Schematic diagram of the hardened layer of a thin-walled ring surface induction hardening equipment provided in the embodiment of the present application. Among them, the thin-walled ring needs to be processed, such as Figure 2 As shown, the hardened layer 410 is the hardened layer of the final use area, the hardened layer transition zone 420 is symmetrically distributed to ensure that the use effect of the hardened layer will not be affected in the end, and the reserve area 430 is symmetrically distributed at both ends. Among them, the widths of the two ends of the hardened layer transition zone 420 are reserved to be the same; the width of the reserve area 430 is reserved to be the same, so that the stress distribution states of the two areas are close, which is conducive to reducing deformation.

[0072] Figure 3 Schematic diagram of the induction hardening equipment for thin-walled ring surface provided in the embodiment of the present application. Figure 3 As shown, this embodiment describes in detail the thin-walled ring surface induction hardening equipment. The thin-walled ring surface induction hardening equipment is used to perform induction hardening on the thin-walled ring to obtain a hardened layer on both sides of the thin-walled ring. The thin-walled ring surface induction hardening equipment 200 includes a first inductor 210, a second inductor 220, a sprayer 230 and a first bracket 240; wherein the positioning device is not in Figure 2 As shown in FIG. 2 , the positioning device is located in front of the first sensor 210 and is also installed on the first bracket 240 to control the accurate feeding position of the thin-walled ring 400 .

[0073] The first inductor 210 and the second inductor 220 each include: a magnetic conductor and an induction coil; a magnetic conductor and an induction coil; wherein the magnetic conductor and the induction coil are respectively located on both sides of the thin-walled ring 400;

[0074] The first inductor 210 and the second inductor 220 are both used for induction heating of the two quenching surfaces; wherein the heating temperature of the first inductor 210 is lower than the heating temperature of the second inductor 220;

[0075] The sprayer 230 comprises: a cavity box, and a first sprayer and a second sprayer fixedly mounted on the cavity box; wherein the first sprayer and the second sprayer are respectively located on two sides of the thin-walled ring;

[0076] The sprayer 230 is used to spray and cool the two quenching surfaces through the first sprayer and the second sprayer;

[0077] The first sensor 210 , the second sensor 220 , and the sprayer 230 are fixedly mounted on the first bracket 240 in sequence.

[0078] Specifically, the first inductor 210 and the second inductor 220 can both heat the thin-walled ring 400, and the first inductor 210 and the second inductor 220 can both strictly constrain the magnetic field through the magnetic conductor, so that the inductor heats the thin-walled ring 400 through the magnetic conductor and the induction coil;

[0079] The sprayer 230 has a first sprayer and a second sprayer which are symmetrical on both sides, and the thin-walled ring 400 is spray-cooled by the symmetrically distributed sprayers; wherein the first sprayer and the second sprayer of the sprayer 230 are symmetrically distributed up and down.

[0080] The first inductor 210 , the second inductor 220 and the sprayer 230 are connected via a first bracket 240 to form a thin-walled ring surface induction quenching device 200 .

[0081] The present application provides a thin-walled ring surface induction quenching equipment, wherein the first inductor and the second inductor both include: a magnetic conductor and an induction coil; wherein the magnetic conductor and the induction coil are both located on both sides of the thin-walled ring; the first inductor and the second inductor are both used to perform induction heating on the two quenching surfaces through their respective magnetic conductors and induction coils; wherein the heating temperature of the first inductor is lower than the heating temperature of the second inductor; the sprayer includes: a cavity box, and the first sprayer and the second sprayer fixedly mounted on the cavity box; wherein the first sprayer and the second sprayer are respectively located on both sides of the thin-walled ring; the sprayer is used to perform spray cooling on the two quenching surfaces through the first sprayer and the second sprayer; the first inductor, the second inductor, and the sprayer are sequentially fixedly mounted on the first bracket. The following technical effects are achieved: heating is performed by dual inductors, which reduces the heating rate during the heating process, thereby reducing the probability of cracking and reducing the deformation; through the design of the inductor, the uniform distribution of the magnetic field is accurately controlled by using a magnetic conductor, the width range of the heating is controlled, no unnecessary heating range is generated, the total heat is reduced, and it is beneficial to control the deformation problem of thin-walled rings; through the design of the sprayer, the cooling rate of the two quenching surfaces during the cooling of the workpiece can be consistent, that is, the same cooling environment of the two quenching surfaces is guaranteed, the temperature control of the cooling process is achieved, and the deformation can be effectively reduced; the sprayer and the inductor are connected by a bracket, which can ensure that the thin-walled ring is quenched according to the process of cooling after linear heating, thereby ensuring the realization of the specific steps of the present invention, effectively reducing the difficulty of operation, and effectively reducing the deformation of the thin-walled ring.

[0082] Figure 4 Schematic diagram of the inductor of the thin-walled ring surface induction hardening equipment provided in the embodiment of the present application. Figure 3 Based on this, the composition of the sensor is demonstrated. Figure 4 is a front view of a separate first sensor, such as Figure 4 As shown, the first inductor 210 includes a magnetic conductor 211 and an induction coil 212. The induction coil 212 extends backwards, and one end is connected to the magnetic conductor through a groove on the magnetic conductor, so as to heat the thin-walled ring by power.

[0083] In a possible design, the magnetic conductors of the first inductor and the second inductor are both rectangular whole pieces of ferrite, so that the shapes of the heating areas of the first inductor and the second inductor are both rectangular.

[0084] Specifically, the magnetic conductor in the heating area of ​​the inductor is a whole piece of ferrite, so as to ensure that the main heating area of ​​the first inductor 210 and the second inductor 220 is a plane, and the heating width can be effectively controlled.

[0085] The technical effect of the embodiments of the present application is: using a whole piece of ferromagnetic material, strictly constraining the magnetic field, controlling the heating range, ensuring the uniformity of the entire hardened layer, and also helping to solve the problem of shallow hardened layer in the middle position of thin-walled rings.

[0086] Figure 5 Schematic diagram of the inductor and workpiece of the thin-walled ring surface induction hardening equipment provided in the embodiment of the present application. The positioning device of the present application can be a general positioning device for hardening processing in the field, including a manual positioning device, a mechanical stopper and a solenoid valve positioning system.

[0087] In a possible design, a positioning device is provided on the first bracket;

[0088] The positioning device can be adjusted according to the position of the thin-walled ring, so as to make the distance between the thin-walled ring and the corresponding magnetic conductor a preset distance, and to align the center lines of the two quenching surfaces with the center lines of the corresponding heating areas.

[0089] Specifically, by setting a positioning device, the distance between the thin-walled ring 400 and the magnetic conductor is a preset distance, so that the thin-walled ring 400 is aligned with the center line of the inductor, that is, the thin-walled ring 400 is aligned with the heating area of ​​the inductor to facilitate subsequent heating.

[0090] The technical effect of the embodiment of the present application is: by setting a limiter, the thin-walled ring is aligned with the center line of the heating area of ​​the inductor, ensuring that the heating area between the thin-walled ring and the inductor is aligned, so as to facilitate accurate heating and effectively heat the quenching surface.

[0091] In one possible design, each induction coil is a copper tube;

[0092] The magnetic conductors of the first inductor and the second inductor are each provided with a groove matching the corresponding copper tube, so as to facilitate the connection between the magnetic conductor and the induction coil.

[0093] Specifically, each induction coil 212 is made of a copper tube, which is easy to be energized, and the magnetic conductor 211 of the inductor corresponds to a groove matching the copper tube, that is, the magnetic conductor 211 and the induction coil 212 are connected. For specific diagrams, please refer to Figure 4 .

[0094] The technical effect of the embodiment of the present application is: there is a groove in the magnetic conductor corresponding to the copper tube, which facilitates the installation of the magnetic conductor at the bending part of the copper tube, strengthens the magnetic field at the corresponding position, and improves the disadvantage of weak heating effect at the corresponding position.

[0095] Figure 6 Schematic diagram of the sprayer of the thin-walled ring surface induction quenching equipment provided in the embodiment of the present application. Figure 6As shown, the upper and lower sprayers can cool the thin-walled ring by spraying quenching liquid, wherein the sprayer includes: the upper sprayer is the first sprayer 231, the lower sprayer is the second sprayer 232, the water guide groove 233, the first water inlet hole 234, the second water inlet hole 235, the water outlet hole 236 and the cavity box 237.

[0096] In one possible design, the first sprayer is located directly above the second sprayer, and the two quenching surfaces are arranged one above the other;

[0097] The sprayer also includes: a water guide trough fixedly mounted behind the cavity box and the second sprayer;

[0098] The water guide groove is arranged on a side away from the second sensor;

[0099] The first sprayer and the second sprayer are respectively used to spray quenching liquid onto the two quenching surfaces; wherein the quenching liquid sprayed by the first sprayer is used to flow on the upper surface of the thin-walled ring so as to cool the quenching surface located on the upper side; the quenching liquid sprayed by the second sprayer is used to flow through the water guide groove close to the lower surface of the thin-walled ring so as to cool the quenching surface located on the lower side.

[0100] Specifically, the sprayer also includes a water guide groove, wherein the water guide groove 233 is installed in the cavity box 237 and is located behind the second sprayer 232 to prevent the quenching liquid from falling due to gravity, resulting in poor processing effect of the hardened layer on the lower surface of the thin-walled ring.

[0101] The two sprayers are symmetrically distributed up and down, so when the first sprayer 231 is located at the top, the second sprayer 232 is located directly below the first sprayer. The first sprayer 231 is used to spray the quenching liquid on the upper quenching surface of the thin-walled ring 400, and the second sprayer 232 is used to spray the quenching liquid on the lower quenching surface of the thin-walled ring 400. At the same time, there is a water guide groove 233 on the rear side, which can be used to make the quenching liquid flow on the upper surface of the water guide groove and the lower quenching surface of the thin-walled ring 400 to achieve cooling of the lower quenching surface.

[0102] The technical effect of the embodiment of the present application is: when the sprayers are symmetrically distributed, the quenching surfaces on both sides of the thin-walled ring are cooled respectively, and a water guide groove is provided to avoid the problem of quenching liquid on the lower quenching surface falling quickly due to gravity, so that the quenching liquid is close to the quenching surface protected by the water guide groove, which can ensure that the cooling environment of the two quenching surfaces of the thin-walled ring is similar.

[0103] In a possible design, the first sprayer and the second sprayer each include: a plurality of water outlet holes;

[0104] The number of the multiple water outlet holes of the first sprinkler is equal to the number of the multiple water outlet holes of the second sprinkler.

[0105] Specifically, the first sprayer 231 and the second sprayer 232 both have a plurality of water outlet holes, through which the quenching liquid can cool the thin-walled ring, and the number of water outlet holes of the first sprayer and the second sprayer is the same. Figure 6 .

[0106] The technical effect of the embodiment of the present application is: through the design of the water outlet holes of the sprayer, the quenching liquid cools the quenching surface of the thin-walled ring, and the number of water outlet holes of the first sprayer and the second sprayer are designed to be consistent to avoid the complexity of processing.

[0107] In a possible design, the sprinkler further includes: a first water inlet hole and a second water inlet hole;

[0108] The cavity box comprises a first water inlet hole and a second water inlet hole, so that the quenching liquid is supplied to the first sprayer through the first water inlet hole and the cavity box, and the quenching liquid is supplied to the second sprayer through the second water inlet hole and the cavity box.

[0109] Specifically, the quenching liquid enters the first sprayer 231 through the first water inlet hole 234, and the quenching liquid enters the second sprayer 232 through the second water inlet hole 235 to ensure the inflow of the quenching liquid.

[0110] For specific illustrations, please refer to Figure 6 .

[0111] The first sprayer sprays quenching liquid onto the upper quenching surface of the thin-walled ring through the water outlet for cooling; the second sprayer sprays quenching liquid onto the lower quenching surface of the thin-walled ring through the water outlet for cooling. The quenching liquid passing through the lower quenching surface will fall quickly due to gravity. At this time, the water guide groove can make the quenching liquid on the lower quenching surface close to the lower quenching surface, ensuring that the cooling environment of the upper and lower quenching surfaces is similar.

[0112] The technical effect of the embodiment of the present application is: quenching liquid is introduced through two designed water inlet holes to control the cooling speed and reduce the deformation of the thin-walled ring.

[0113] In one possible design, the first water inlet hole and the second water inlet hole are not interconnected, and the quenching liquid flow rate of the first water inlet hole is smaller than the quenching liquid flow rate of the second water inlet hole, so that the quenching liquid spraying flow rate on the upper surface of the thin-walled ring is equal to the quenching liquid spraying flow rate on the lower surface of the thin-walled ring.

[0114] Specifically, the spray flow rate is the flow rate obtained on the surface of the thin-walled ring when the sprayer sprays the quenching liquid onto the thin-walled ring. The spray flow rate of the quenching liquid on the upper surface of the thin-walled ring is the same as the spray flow rate of the quenching liquid on the lower surface of the thin-walled ring, that is, the cooling environment of the upper and lower surfaces is ensured to be the same.

[0115] The first water inlet 234 and the second water inlet 235 of the sprayer 230 are not interconnected, that is, the flow rates of the quenching liquid introduced into the first water inlet 234 and the second water inlet 235 may be inconsistent. Since the quenching liquid sprayed from the second sprayer 232 is subject to gravity, causing the quenching liquid to fall onto the quenching surface on the lower side of the thin-walled ring, the flow rate of the quenching liquid introduced into the second water inlet 235 needs to be greater than the flow rate of the quenching liquid introduced into the first water inlet 234.

[0116] The first sprayer 231 is communicated with the first water inlet 234, and the second sprayer 232 is communicated with the second water inlet 235 to form a passage, so that the quenching liquid is sprayed to the thin-walled ring through the passage.

[0117] For specific illustrations, please refer to Figure 6 .

[0118] The technical effect of the embodiment of the present application is: the water inlet is used to ensure that the sprayer has sufficient quenching liquid to cool the quenching surface of the thin-walled ring, and considering the cooling problem of the lower quenching surface of the thin-walled ring caused by gravity, the flow rates of the second water inlet and the first water inlet are designed to be different, thereby creating the same cooling environment for the quenching liquid on both sides of the thin-walled ring.

[0119] This embodiment can be Figure 1 Based on this, the surface induction hardening system of thin-walled rings is described in detail. For specific diagrams, please refer to Figure 1 , a thin-walled ring surface induction quenching system, comprising: a pushing device 100, and a thin-walled ring surface induction quenching device 200;

[0120] The pushing device 100 is used to push the thin-walled ring 400 to the thin-walled ring surface induction hardening device 200;

[0121] The thin-walled ring surface induction hardening equipment 200 is used to perform induction hardening on the thin-walled ring 400 to obtain hardened layers on both sides of the thin-walled ring 400 .

[0122] Specifically, the pushing device 100 is used to push the thin-walled ring 400 to rotate to achieve surface induction quenching of the thin-walled ring; the thin-walled ring surface induction quenching device 200 performs surface induction quenching on the thin-walled ring 400 to obtain a hardened layer on both sides of the thin-walled ring 400.

[0123] The technical effect of the embodiment of the present application is: the movement of the thin-walled ring is achieved through the pushing device to facilitate surface quenching treatment.

[0124] The present application provides a thin-walled ring surface induction quenching system, which can be used for a thin-walled ring surface induction quenching device in the above-mentioned embodiment. Its implementation principle and technical effect are similar, and this embodiment will not be described in detail here.

[0125] Figure 7 A schematic diagram of a process for induction hardening a thin-walled ring surface provided in an embodiment of the present application. Figure 1 Based on the embodiment, the surface induction quenching method of the thin-walled ring is described in detail. Taking the thin-walled ring as an example, when the quenching surface of the thin-walled ring is symmetrically distributed up and down, the sprayers on the sprayer are distributed up and down.

[0126] like Figure 7 As shown, this embodiment provides a method for induction hardening of a thin-walled ring surface, comprising:

[0127] S701, preheating the quenching surfaces on both sides of the thin-walled ring by using a first inductor.

[0128] Specifically, when the center line of the thin-walled ring is aligned with the center line of the first inductor, that is, the thin-walled ring reaches the designated position to be heated, the first inductor preheats the upper and lower quenching surfaces of the thin-walled ring.

[0129] S702, performing secondary heating on the two quenched surfaces through a second sensor.

[0130] The heating temperature of the first sensor is lower than the heating temperature of the second sensor.

[0131] Specifically, at this time, the thin-walled ring has been heated to the heating temperature of the first inductor, and the second inductor continues to heat the two quenching surfaces of the thin-walled ring.

[0132] S703, spray cooling the two quenching surfaces through a sprayer.

[0133] Specifically, after heating, the two quenching surfaces of the thin-walled ring are sprayed with quenching liquid through a sprayer to cool them and obtain a hardened layer.

[0134] The present application provides a method for induction hardening of the surface of a thin-walled ring, which can be used for an induction hardening device for the surface of a thin-walled ring in the above-mentioned embodiment. The implementation principle and technical effect are similar, and will not be described in detail in this embodiment.

[0135] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A thin-walled ring surface induction hardening equipment, characterized in that: The thin-walled ring surface induction quenching equipment is used to perform induction quenching on the thin-walled ring to obtain a hardened layer located on both sides of the thin-walled ring. The thin-walled ring surface induction quenching equipment includes: a first inductor, a second inductor, a sprayer and a first bracket; The first inductor and the second inductor both include: a magnetic conductor and an induction coil; wherein the magnetic conductor and the induction coil are respectively located on two sides of the thin-walled ring; The first inductor and the second inductor are both used to perform induction heating on the two quenching surfaces; wherein the heating temperature of the first inductor is lower than the heating temperature of the second inductor; The sprayer comprises: a cavity box, and a first sprayer and a second sprayer fixedly mounted on the cavity box; wherein the first sprayer and the second sprayer are respectively located on both sides of the thin-walled ring; The sprayer is used to spray and cool the two quenching surfaces through the first sprayer and the second sprayer; The first sensor, the second sensor, and the sprinkler are fixedly mounted on the first bracket in sequence.

2. The thin-walled ring surface induction hardening equipment according to claim 1 is characterized in that: The magnetic conductors of the first inductor and the second inductor are both rectangular whole pieces of ferrite, so that the shapes of the heating areas of the first inductor and the second inductor are both rectangular.

3. The thin-walled ring surface induction hardening equipment according to claim 2 is characterized in that: A positioning device is provided on the first bracket; The positioning device can be adjusted according to the position of the thin-walled ring, so as to make the distance between the thin-walled ring and the corresponding magnetic conductor a preset distance, and to align the center lines of the two quenching surfaces with the center lines of the corresponding heating areas.

4. The thin-walled ring surface induction hardening equipment according to any one of claims 2-3, characterized in that: Each of the induction coils is a copper tube; A groove matching the corresponding copper tube is provided on each of the magnetic conductors of the first inductor and the second inductor, so as to facilitate the connection between the magnetic conductor and the induction coil.

5. The thin-walled ring surface induction hardening equipment according to claim 1, characterized in that: The first sprayer is located directly above the second sprayer, and the two quenching surfaces are arranged up and down; The sprayer further comprises: a water guide trough fixedly mounted behind the cavity box and the second sprayer; The water guide groove is arranged at a side away from the second sensor; The first sprayer and the second sprayer are respectively used to spray quenching liquid onto the two quenching surfaces; wherein the quenching liquid sprayed by the first sprayer is used to flow on the upper surface of the thin-walled ring so as to cool the quenching surface located on the upper side; the quenching liquid sprayed by the second sprayer is used to flow through the water guide groove close to the lower surface of the thin-walled ring so as to cool the quenching surface located on the lower side.

6. The thin-walled ring surface induction hardening equipment according to claim 5, characterized in that: The first sprayer and the second sprayer each include: a plurality of water outlet holes; The number of the plurality of water outlet holes of the first sprayer is equal to the number of the plurality of water outlet holes of the second sprayer.

7. The thin-walled ring surface induction hardening equipment according to claim 6, characterized in that: The sprayer further comprises: a first water inlet hole and a second water inlet hole; The cavity box includes the first water inlet hole and the second water inlet hole, so that the quenching liquid is supplied to the first sprayer through the first water inlet hole and the cavity box, and the quenching liquid is supplied to the second sprayer through the second water inlet hole and the cavity box.

8. The thin-walled ring surface induction hardening equipment according to claim 7, characterized in that: The first water inlet hole and the second water inlet hole are not interconnected, and the quenching liquid flow rate of the first water inlet hole is smaller than the quenching liquid flow rate of the second water inlet hole, so that the quenching liquid spraying flow rate on the upper surface of the thin-walled ring is equal to the quenching liquid spraying flow rate on the lower surface of the thin-walled ring.

9. A thin-walled ring surface induction quenching system, characterized in that: The thin-walled ring surface induction quenching system comprises: a pushing device, and a thin-walled ring surface induction quenching device according to any one of claims 1 to 8; The pushing device is used to push the thin-walled ring to the thin-walled ring surface induction quenching device; The thin-walled ring surface induction hardening equipment is used to perform induction hardening on the thin-walled ring to obtain hardened layers on both side surfaces of the thin-walled ring.

10. A method for induction hardening the surface of a thin-walled ring, characterized in that: The method is applied to the thin-walled ring surface induction hardening equipment according to any one of claims 1 to 8, wherein the thin-walled ring surface induction hardening equipment comprises a first inductor, a second inductor and a sprayer, and the method comprises: Preheating the quenching surfaces on both sides of the thin-walled ring by means of the first inductor; The two quenched surfaces are heated for a second time by the second inductor; wherein the heating temperature of the first inductor is lower than the heating temperature of the second inductor; The two quenching surfaces are spray-cooled by the sprayer.

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