CN110791642A - Heat treatment device and process for inner gear ring - Google Patents
Heat treatment device and process for inner gear ring Download PDFInfo
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- CN110791642A CN110791642A CN201911188913.XA CN201911188913A CN110791642A CN 110791642 A CN110791642 A CN 110791642A CN 201911188913 A CN201911188913 A CN 201911188913A CN 110791642 A CN110791642 A CN 110791642A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 196
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 65
- 230000006698 induction Effects 0.000 claims abstract description 58
- 238000010791 quenching Methods 0.000 claims abstract description 35
- 230000000171 quenching effect Effects 0.000 claims abstract description 35
- 238000001125 extrusion Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000005496 tempering Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 53
- 238000005192 partition Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 15
- 239000011261 inert gas Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a heat treatment device and a process for an inner gear ring, the heat treatment device comprises an induction heating device, a mandrel, a clamp, a quenching device and an extrusion device, the induction heating device comprises a heating furnace body, an inlet door and an outlet door which are respectively arranged at two ends of the heating furnace body, a spiral induction heating coil is arranged in the heating furnace body, a heating cavity is formed in the induction heating coil, a separation door is arranged between the heating cavity and the inlet door, a separation cavity is formed between the separation door and the inlet door, the separation cavity and the heating cavity are both communicated with an air inlet pipe, the outer diameter of the mandrel is matched with the inner diameter of the inner gear ring, the invention heats the inner gear ring through the induction heating device, the mandrel is arranged in the heated inner gear ring and carries out quenching, tempering and other operations along with the inner gear ring, the deformation of the inner gear, the quenching device is used for cooling in the quenching process, and the extruding device is used for extruding the mandrel installed in the inner gear ring from the inner gear ring.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a heat treatment device and a heat treatment process for an inner gear ring.
Background
The planetary gear reducer has the characteristics of small volume, large bearing capacity, stable work and the like, is commonly used in the fields of reducers, heavy vehicles and the like, and comprises a sun gear, a planet carrier and an inner gear ring.
The inner gear ring makes an annular part with teeth machined on an inner ring, and the inner gear ring puts higher requirements on updating along with the upsizing and the advancement of products, except for seeking a new way from the design and materials, the heat treatment of the gear ring is an indispensable means, the common heat treatment mode is high-temperature tempering after quenching, the inner gear ring needs to be heated firstly during quenching, and under the conventional condition, in order to prevent the oxidation of the inner gear ring during heating, a converter is usually adopted for heating, but 30-40 minutes is needed for heating one inner gear ring by a converter, so the processing efficiency of the inner gear ring is low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the inner gear ring heat treatment device and the process which have high efficiency, safety, reliability and convenient operation.
The invention is realized by the following technical scheme, and provides an inner gear ring heat treatment device which comprises an induction heating device, a mandrel, a clamp, a quenching device and an extrusion device, wherein the induction heating device comprises a heating furnace body, and an inlet door and an outlet door which are respectively arranged at two ends of the heating furnace body, a spiral induction heating coil is arranged in the heating furnace body, a heating cavity is formed in the induction heating coil, a separation door is arranged between the heating cavity and the inlet door, a separation cavity is formed between the separation door and the inlet door, the separation cavity and the heating cavity are both communicated with an air inlet pipe, and the outer diameter of the mandrel is matched with the inner diameter of the inner.
The induction heating device is used for heating the inner gear ring, the mandrel is arranged in the heated inner gear ring and is subjected to quenching, tempering and other operations along with the inner gear ring, the deformation of the inner gear ring in the cooling process can be prevented, the clamp is used for clamping the inner gear ring, the quenching device is used for cooling in the quenching process, and the extrusion device is used for extruding the mandrel installed in the inner gear ring from the inner gear ring.
The induction heating device in the scheme adopts alternating current coil induction heating, the separation cavity and the heating cavity are communicated with the air inlet pipes, inert gas can be injected into the heating cavity and the separation cavity, oxidation in the heating process of the inner gear ring is prevented, the heating furnace body can be sealed by the inlet door and the outlet door, leakage of the inert gas is reduced, the inner gear ring is placed in the separation cavity before entering the heating cavity, then the inlet door is closed, the separation door is opened, the inner gear ring is moved into the heating cavity from the separation cavity, and leakage of the inert gas can be further reduced.
Preferably, the inlet door, the outlet door and the separating door are connected to the heating furnace body in a sliding mode in the vertical direction, the inlet cylinder, the outlet cylinder and the separating cylinder are arranged above the heating furnace body, and the telescopic shaft of the inlet cylinder, the telescopic shaft of the outlet cylinder and the telescopic shaft of the separating cylinder are connected with the upper end of the inlet door, the upper end of the outlet door and the upper end of the separating door through steel wire ropes respectively. The import door, export door and separate the door in this scheme all along upper and lower direction sliding connection on heating furnace body to realize the switch through import cylinder, export cylinder and separation cylinder.
As optimization, induction heating device still includes the slide rail of setting in the heating furnace body along heating furnace body length direction, and the slide rail passes heating intracavity portion, places the bracket with the slide rail adaptation on the slide rail. The bracket in the scheme is used for placing the inner gear ring, and the bracket is placed on the sliding rail, so that the inner gear ring can slide along the length direction of the heating furnace body.
Preferably, the induction heating device further comprises a feeding cylinder arranged on the outer side of the inlet end of the heating furnace body, a feeding plate corresponding to the bracket is arranged on a telescopic shaft of the feeding cylinder, and the bottoms of the inlet door, the outlet door and the partition door are provided with through holes through which the bracket can pass. The feeding cylinder in the scheme drives the feeding plate to push the bracket to move along the length direction of the heating furnace body, and the bracket in the heating furnace body can be pushed to move together through interaction between the brackets.
Preferably, a heat insulation layer wrapping the induction heating coil is arranged in the heating furnace body, a cooling pipe is arranged in the heat insulation layer, and two ends of the cooling pipe are respectively communicated with the water inlet pipe and the water outlet pipe. The insulating layer in this scheme is used for completely cutting off the heat that the ring gear gived off, prevents that induction heating coil high temperature, and the cooling tube can play the cooling effect to induction heating coil.
Preferably, the quenching device comprises a fixed base, a liquid collecting tank fixed above the base and a supporting plate arranged in the liquid collecting tank, wherein a liquid return hole is formed in the bottom of the liquid collecting tank, a lifting oil cylinder is arranged below the base, a telescopic shaft of the lifting oil cylinder extends into the liquid collecting tank and is fixedly connected with the supporting plate, and a plurality of liquid spraying ports are formed in the liquid collecting tank. The liquid spraying port in the scheme is used for spraying cooling liquid to the inner gear ring, so that quenching operation is realized, liquid flowing down from the inner gear ring flows out through the liquid return hole, and the lifting oil cylinder drives the supporting plate to move up and down, so that all parts of the inner gear ring can be cooled.
Preferably, the quenching device further comprises a cover plate arranged above the liquid collecting tank and a cover plate oil cylinder for driving the cover plate to lift. The apron in this scheme prevents that liquid from splashing the collecting tank outside when being used for quenching, and when placing the ring gear, apron cylinder drive apron rises.
Preferably, the extrusion device comprises a fixed bottom plate, a support sleeve placed on the bottom plate, an extrusion shaft arranged above the support sleeve and an extrusion oil cylinder driving the extrusion shaft to move up and down, the outer diameter of the extrusion shaft is smaller than the inner diameter of the inner gear ring, and the inner diameter of the support sleeve is larger than the outer diameter of the core shaft and smaller than the outer diameter of the inner gear ring. The supporting sleeve in the scheme is used for supporting the inner gear ring, the extrusion shaft moves downwards, and the mandrel in the inner gear ring is extruded and falls into the supporting sleeve, so that the inner gear ring and the mandrel are separated.
Preferably, the clamp comprises a lower clamp and an upper clamp, the lower clamp comprises two parallel cross rods, the distance between the cross rods is smaller than the diameter of the inner gear ring, one ends of the two cross rods are fixedly connected through a connecting rod, the upper clamp comprises a clamping plate and an upper clamping arm which are fixedly connected in sequence, an arc-shaped surface matched with the inner gear ring is arranged on the clamping plate, the end part of the clamping plate is hinged to one cross rod, and a lower clamping arm corresponding to the upper clamping arm is fixedly connected to the other cross rod. The clamp in the scheme is used for clamping the inner gear ring, when the clamp is used, the two cross rods are inserted into the arc surfaces on the two sides of the lower portion of the inner gear ring, then the clamping plate is pressed down on the upper surface of the inner gear ring, the upper clamping arm and the lower clamping arm are clamped towards the middle, and therefore the inner gear ring is fixed between the cross beam and the clamping plate.
A heat treatment process for an inner gear ring comprises the following steps:
a. placing a bracket in the induction heating device on a sliding rail, vertically placing an inner gear ring on the bracket through a clamp, opening an inlet door, pushing the bracket and the inner gear ring into a separation cavity through a feeding cylinder, and then closing the inlet door;
b. placing an empty bracket on the sliding rail, opening the partition door, pushing the empty bracket into the partition cavity through a through hole at the bottom of the entrance door by using the feeding cylinder, pushing the previous bracket and the inner gear ring into the heating cavity by using the empty bracket, closing the partition door, and sequentially repeating the step a and the step b;
c. inert gas is injected into the separation cavity and the heating cavity through the air inlet pipe, the induction heating coil is electrified to perform induction heating on the inner gear ring, after the heating is completed, the outlet door is opened, and the bracket after the heating is completed is pushed out of the heating cavity through the next bracket;
d. placing a mandrel on a supporting plate of a quenching device, sleeving an inner gear ring on the mandrel through a clamp, driving a cover plate to descend through a cover plate oil cylinder, covering a liquid collecting tank, spraying cooling liquid to the inner gear ring through a liquid spraying opening, and driving the inner gear ring to move up and down through a lifting oil cylinder to finish quenching of the inner gear ring;
e. carrying out high-temperature tempering on the quenched inner gear ring;
f. and the inner gear ring after high-temperature tempering is placed on a support sleeve in the extrusion device through a clamp, and the extrusion shaft is driven to descend by an extrusion oil cylinder so as to extrude the core shaft from the inner gear ring.
The invention has the beneficial effects that: the invention relates to a heat treatment device and a process for an inner gear ring, which are characterized in that an induction heating device is used for heating the inner gear ring, a mandrel is arranged in the heated inner gear ring and is subjected to quenching, tempering and other operations along with the inner gear ring, so that the deformation of the inner gear ring in the cooling process can be prevented, a clamp is used for clamping the inner gear ring, a quenching device is used for cooling in the quenching process, and an extrusion device is used for extruding the mandrel arranged in the inner gear ring from the inner gear ring.
The inner gear ring is heated by induction heating, the heating time is short, the efficiency is high, the inert gas is injected into the separation cavity and the heating cavity, the oxidation of the inner gear ring in the heating process can be prevented, the inlet door and the outlet door can seal the heating furnace body, the leakage of the inert gas is reduced, the inner gear ring is placed in the separation cavity before entering the heating cavity, then the inlet door is closed, the separation door is opened, the inner gear ring is moved into the heating cavity from the separation cavity, and the leakage of the inert gas can be further reduced.
Drawings
FIG. 1 is a front view of an induction heating unit of the present invention;
FIG. 2 is a side view of an induction heating unit of the present invention;
FIG. 3 is a schematic view of the inside of a heating furnace body of the induction heating apparatus of the present invention;
FIG. 4 is a cross-sectional view of the heating chamber of the induction heating unit of the present invention;
FIG. 5 is a schematic view of the first step of opening and closing the door of the induction heating apparatus of the present invention;
FIG. 6 is a schematic diagram of a second step of opening and closing the door of the induction heating apparatus of the present invention;
FIG. 7 is a front view of the bracket of the present invention;
FIG. 8 is a top view of the bracket of the present invention;
FIG. 9 is a cross-sectional view of a mandrel of the present invention;
FIG. 10 is a schematic view of the mandrel installation of the present invention;
FIG. 11 is a schematic view of the quenching apparatus of the present invention;
FIG. 12 is a schematic view of an extrusion apparatus according to the present invention;
FIG. 13 is a schematic view of a clamp according to the present invention;
FIG. 14 is a schematic view of the lower clamp configuration of the present invention;
FIG. 15 is a schematic view of the upper clamp configuration of the present invention;
FIG. 16 is a schematic view of the inside of a heating furnace body of an induction heating apparatus according to embodiment 2 of the present invention;
fig. 17 is a schematic view of a first step of opening and closing a door of the induction heating apparatus according to embodiment 2 of the present invention;
FIG. 18 is a schematic diagram showing the second step of opening and closing the door of the induction heating apparatus according to embodiment 2 of the present invention;
shown in the figure:
1. annular gear, 2, induction heating coil, 3, a heat insulation layer, 4, a bracket, 5, a slide rail, 6, a water inlet pipe, 7, a water outlet pipe, 8, an inlet door, 9, an inlet cylinder, 10, an outlet door, 11, an outlet cylinder, 12, a feeding cylinder, 13, a feeding plate, 14, an air inlet pipe, 15, a display screen, 16, a temperature detector, 17, a mandrel, 18, a base, 19, a liquid collecting tank, 20, a lifting oil cylinder, 21, a supporting plate, 22, a supporting frame, 23, a liquid spraying opening, 24, a cover plate oil cylinder, 25, a cover plate, 26, a bottom plate, 27, a pressing shaft, 28, a pressing oil cylinder, 29, a supporting sleeve, 30, a separating cylinder, 31, a separating door, 32, a lower clamp, 33, an upper clamp, 34, a rear separating cylinder, 35 and a rear separating.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example 1:
as shown in the figure, the inner gear ring heat treatment device comprises an induction heating device, a mandrel 17, a clamp, a quenching device and an extrusion device, wherein the induction heating device is used for heating an inner gear ring 1, the mandrel 17 is arranged in the heated inner gear ring 1 and carries out quenching, tempering and other operations along with the inner gear ring, the deformation of the inner gear ring 1 in the cooling process can be prevented, the clamp is used for clamping the inner gear ring 1 to carry the inner gear ring 1, the quenching device is used for cooling in the quenching process, and the extrusion device is used for extruding the mandrel installed in the inner gear ring out of the inner gear ring 1.
Induction heating device is including heating furnace body, is equipped with spiral shape induction heating coil 2 in the heating furnace body, and induction heating coil 2's length is less than heating furnace body's length, forms the columniform heating chamber in the induction heating coil 2, be equipped with insulating layer 3 including 2 parcels of induction heating coil in the heating furnace body, the cooling tube is equipped with in the insulating layer 3, and the cooling tube is the spiral and installs and put in insulating layer 3, and the cooling tube both ends communicate inlet tube 6 and outlet pipe 7 respectively, and the water tank flows back after cooling in the exhaust coolant liquid gets into the closed cooling tower in the outlet pipe 7, and the water pump extracts the coolant liquid from the water tank and pours.
The side surface of the outside of the heating furnace body, which is close to the outlet, is provided with a temperature monitor 16, the heating furnace body is provided with a hole which can allow the temperature monitor 16 to irradiate the inner gear ring, the temperature monitor 16 is an infrared thermometer, and the front surface of the heating furnace body is provided with a display screen 15 which is used for displaying the temperature of the inner gear ring 1 measured by the temperature monitor 16, so that the temperature of the inner gear ring 1 after heating can be detected.
Induction heating device still includes along heating furnace body length direction setting slide rail 5 in the heating furnace body, and 5 both ends of slide rail stretch out outside the heating furnace body, slide rail 5 is the round steel that two levels set up, and slide rail 5 passes heating intracavity portion, places on the slide rail 5 with the bracket 4 of 5 adaptations of slide rail.
The bracket 4 is a square frame formed by two cross beams and two longitudinal beams, and the bottom surfaces of the two cross beams are provided with arc surfaces with the same radius as that of the sliding rail 5, so that the bracket 4 can slide on the sliding rail 5.
The inner gear ring 1 is placed behind the bracket 4, and the inner gear ring 1 is concentric with the induction heating coil 2.
The induction heating device also comprises a feeding cylinder 12 arranged at the outer side of the inlet end of the heating furnace body, a feeding plate 13 corresponding to the bracket 4 is arranged on a telescopic shaft of the feeding cylinder 12, the bracket 4 on the slide rail 5 can be pushed into the heating furnace body through the extension of the feeding cylinder 12, and the top surface of the feeding plate 13 is lower than that of the bracket 4.
An inlet door 8 and an outlet door 10 are arranged at two ends of the heating furnace body, a separation door 31 is arranged between the heating cavity and the inlet door 8, the distance between the separation door 31 and the inlet door 8 is equal to the length of the bracket 4, the distance between the separation door 31 and the outlet door 10 is odd times of the length of the bracket 4, a separation cavity is formed between the separation door 31 and the inlet door 8, the separation cavity and the heating cavity are both communicated with an air inlet pipe 14, the air inlet pipe 14 is communicated with an air tank of inert gas, and the inert gas in the embodiment is nitrogen.
The inlet door 8 and the outlet door 10 can realize the sealing of two ends of the heating furnace body, and the separation door 31 can realize the sealing of one end of the heating cavity close to the inlet door 8.
The inlet door 8, the outlet door 10 and the partition door 31 are connected to the heating furnace body in a sliding mode in the vertical direction, the inlet cylinder 9, the outlet cylinder 11 and the partition cylinder 30 are arranged above the heating furnace body, and the telescopic shaft of the inlet cylinder 9, the telescopic shaft of the outlet cylinder 11 and the telescopic shaft of the partition cylinder 30 are connected with the upper end of the inlet door 8, the upper end of the outlet door 10 and the upper end of the partition door 31 through steel wire ropes respectively.
The bottom of the entrance door 8, the exit door 10 and the dividing door 31 are provided with through holes through which the brackets 4 can pass.
The mandrel 17 is a cylindrical stepped shaft, the diameter of the thinner part of the stepped shaft is the same as the inner diameter of the inner gear ring 1 in a cooling state, when the inner gear ring 1 is heated, the inner gear ring 1 can be easily sleeved on the mandrel 17, and a circular hole is formed in the mandrel 17.
The quenching device comprises a fixed base 18, a circular liquid collecting tank 19 fixed above the base 18 and a supporting plate 21 arranged in the liquid collecting tank 19, wherein a raised circular shaft is arranged in the middle of the supporting plate 21, and when the mandrel 17 is placed on the supporting plate 21, a circular hole in the center of the mandrel 17 is sleeved on the circular shaft to prevent the mandrel 17 from moving left and right.
The bottom of the liquid collecting groove 19 is provided with a liquid return hole, a lifting oil cylinder 20 is arranged below the base 18, a telescopic shaft of the lifting oil cylinder 20 extends into the liquid collecting groove 19 and is fixedly connected with a supporting plate 21, a sealing ring is arranged at the position, penetrating through the liquid collecting groove 19, of the telescopic shaft of the lifting oil cylinder 20, 8 liquid spraying ports 23 are formed in the liquid collecting groove 19, the liquid spraying ports 23 are arranged on a supporting frame 22, the supporting frame 22 is provided with 8 liquid spraying ports, the supporting frame 22 is fixedly connected to the top of the liquid collecting groove 19 and is circularly arranged, and the liquid spraying ports 23 face.
The liquid spraying port 23 is communicated with the outlet of the pump through a hose, the inlet of the pump is communicated with the liquid tank, liquid in the liquid return hole is communicated with the radiator through a liquid return pipe to dissipate heat, and the liquid after heat dissipation flows back to the liquid tank.
The quenching device also comprises a cover plate 25 arranged above the liquid collecting tank 19 and a cover plate oil cylinder 24 for driving the cover plate 25 to lift, and the cover plate 25 can cover the whole liquid collecting tank 19.
The extrusion device comprises a fixed bottom plate 26, a support sleeve 29 placed on the bottom plate 26, an extrusion shaft 27 arranged above the support sleeve 29 and an extrusion oil cylinder 28 driving the extrusion shaft 27 to move up and down, wherein the outer diameter of the extrusion shaft 27 is smaller than the inner diameter of the inner gear ring 1, the inner diameter of the support sleeve 29 is larger than the outer diameter of the mandrel 17 and smaller than the outer diameter of the inner gear ring 1, and the height of the support sleeve 29 is larger than the width of the inner gear ring 1.
The clamp comprises a lower clamp 32 and an upper clamp 33, the lower clamp 32 comprises two parallel cross rods, the distance between the cross rods is smaller than the diameter of the inner gear ring 1, one ends of the two cross rods are fixedly connected through a connecting rod, the upper clamp 33 comprises a clamping plate and an upper clamping arm which are fixedly connected in sequence, an arc-shaped surface matched with the inner gear ring 1 is arranged on the clamping plate, the end part of the clamping plate is hinged to one cross rod, and a lower clamping arm corresponding to the upper clamping arm is fixedly connected to the other cross rod.
The heat treatment process of example 1:
as shown in fig. 5 and 6, the bracket 4 in the induction heating device is placed on the sliding rail 5, the inner gear ring 1 is vertically placed on the bracket 4 through the clamp, the inlet door 8 is opened, the outlet door 10 is opened, the feeding air cylinder 12 drives the feeding plate 13 to advance by the distance of the bracket 4, the bracket 4 and the inner gear ring 1 are pushed into the separation cavity through the feeding air cylinder 12, the bracket 4 which is empty in the separation cavity is pushed into the heating cavity through the through hole at the bottom of the separation door 31, the last inner gear ring 1 in the heating cavity is pushed out of the heating cavity together with the bracket 4, and then the inlet door 8 and the outlet door 10 are closed.
Then, an empty bracket 4 is continuously placed on the sliding rail 5, the separation door 31 is opened, the feeding air cylinder 12 drives the feeding plate 13 to advance by the distance of the bracket 4, the empty bracket 4 is pushed into the separation cavity through the through hole at the bottom of the inlet door 8 by the feeding air cylinder 12, the bracket 4 and the inner gear ring 1 in the separation cavity are pushed into the heating cavity by the empty bracket 4, the last empty bracket 4 in the heating cavity is pushed out of the heating cavity through the through hole at the bottom of the outlet door 10 by the action of the bracket 4, and then the separation door 31 is closed.
The above operations are repeated in sequence.
Inert gas is injected into the separation cavity and the heating cavity through the air inlet pipe 14, the induction heating coil 2 is electrified to perform induction heating on the inner gear ring 1, and the heated inner gear ring 1 is pushed out of the heating cavity through the bracket 4.
The mandrel 17 is placed on a supporting plate 21 of the quenching device, the inner gear ring 1 is sleeved on the mandrel 17 through a clamp, a cover plate 25 is driven to descend through a cover plate oil cylinder 24 to cover the liquid collecting tank 19, cooling liquid is sprayed to the inner gear ring 1 through a liquid spraying opening 23, and the inner gear ring 1 is driven to move up and down through a lifting oil cylinder 20 to finish quenching of the inner gear ring.
And (3) reheating the quenched ring gear 1 to 500-650 ℃, wherein at the moment, due to the low heating temperature, any heating mode can be adopted, and then high-temperature tempering is carried out.
The ring gear 1 after high-temperature tempering is placed on a supporting sleeve 29 in an extruding device through a clamp, and a pressing shaft 27 is driven to descend through an extruding oil cylinder 28, so that the mandrel 17 is extruded from the ring gear 1.
Example 2:
as shown in fig. 16, the present embodiment is different from embodiment 1 in that: a rear separation door 35 is arranged between the heating cavity and the outlet door 10, the distance between the rear separation door 35 and the outlet door 10 is equal to the length of the bracket 4, the distance between the separation door 31 and the rear separation door 35 is even times of the length of the bracket 4, a rear separation cavity is formed between the rear separation door 35 and the outlet door 10, an air inlet pipe 14 is communicated in the rear separation cavity, the rear separation door 35 can realize the sealing of the heating cavity, and a through hole through which the bracket 4 can pass is formed in the bottom of the rear separation door 35.
The rear separating door 35 is connected to the heating furnace body in a sliding mode in the vertical direction, a rear separating cylinder 34 is installed above the heating furnace body, and a telescopic shaft of the rear separating cylinder 34 is connected with the upper end of the rear separating door 35 through a steel wire rope.
The heat treatment process of example 2:
as shown in fig. 17 and 18, the bracket 4 in the induction heating device is placed on the sliding rail 5, the inner ring gear 1 is vertically placed on the bracket 4 through the clamp, the inlet door 8 is opened, the outlet door 10 is opened, the feeding cylinder 12 drives the feeding plate 13 to advance by the distance of one bracket 4, the bracket 4 and the inner ring gear 1 are pushed into the separation cavity through the feeding cylinder 12, the empty bracket 4 in the separation cavity is pushed into the heating cavity through the through hole at the bottom of the separation door 31, the last empty bracket 4 in the heating cavity is pushed into the rear separation cavity through the through hole at the bottom of the rear separation door 35, the inner ring gear 1 in the rear separation cavity is pushed out of the separation cavity together with the bracket 4, and then the inlet door 8 and the outlet door 10 are closed.
Then, an empty bracket 4 is continuously placed on the sliding rail 5, the separation door 31 and the rear separation door 35 are opened, the feeding cylinder 12 drives the feeding plate 13 to advance by the distance of one bracket 4, the empty bracket 4 is pushed into the separation cavity through the through hole at the bottom of the inlet door 8 by the feeding cylinder 12, the empty bracket 4 in the rear separation cavity is pushed out of the rear separation cavity through the through hole at the bottom of the outlet door 10, the bracket 4 and the inner gear ring 1 in the separation cavity are pushed into the heating cavity by the empty bracket 4, the last bracket 4 and the inner gear ring 1 in the heating cavity are pushed into the rear separation cavity, the hollow bracket 4 in the rear separation cavity is pushed out of the rear separation cavity through the through hole at the bottom of the outlet door 10 by the action of the bracket 4, and then the separation door 31 and the rear separation door 35 are closed.
The above operations are repeated in sequence.
Inert gas is injected into the separation cavity and the heating cavity through the air inlet pipe 14, the induction heating coil 2 is electrified to perform induction heating on the inner gear ring 1, and the heated inner gear ring 1 is pushed out of the heating cavity through the bracket 4.
The mandrel 17 is placed on a supporting plate 21 of the quenching device, the inner gear ring 1 is sleeved on the mandrel 17 through a clamp, a cover plate 25 is driven to descend through a cover plate oil cylinder 24 to cover the liquid collecting tank 19, cooling liquid is sprayed to the inner gear ring 1 through a liquid spraying opening 23, and the inner gear ring 1 is driven to move up and down through a lifting oil cylinder 20 to finish quenching of the inner gear ring.
And (3) reheating the quenched ring gear 1 to 500-650 ℃, wherein at the moment, due to the low heating temperature, any heating mode can be adopted, and then high-temperature tempering is carried out.
The ring gear 1 after high-temperature tempering is placed on a supporting sleeve 29 in an extruding device through a clamp, and a pressing shaft 27 is driven to descend through an extruding oil cylinder 28, so that the mandrel 17 is extruded from the ring gear 1.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (10)
1. A heat treatment device for an inner gear ring is characterized in that: including induction heating device, dabber (17), clamp, quenching device and extrusion device, induction heating device includes the heating furnace body and sets up respectively at entrance door (8) and exit door (10) at the heating furnace body both ends, is equipped with spiral shape induction heating coil (2) in the heating furnace body, forms the heating chamber in induction heating coil (2), is equipped with between heating chamber and entrance door (8) and separates door (31), separates to form between door (31) and entrance door (8) and separates the chamber, separates the chamber and all communicates with the heating chamber and has intake pipe (14), the external diameter of dabber (17) and the internal diameter adaptation of ring gear (1).
2. The heat treatment device for an internally toothed ring according to claim 1, characterized in that: the inlet door (8), the outlet door (10) and the partition door (31) are all connected to the heating furnace body in a sliding mode along the vertical direction, the inlet cylinder (9), the outlet cylinder (11) and the partition cylinder (30) are mounted above the heating furnace body, and the telescopic shaft of the inlet cylinder (9), the telescopic shaft of the outlet cylinder (11) and the telescopic shaft of the partition cylinder (30) are connected with the upper end of the inlet door (8), the upper end of the outlet door (10) and the upper end of the partition door (31) through steel wire ropes respectively.
3. The heat treatment device for an internally toothed ring according to claim 1, characterized in that: the induction heating device further comprises a sliding rail (5) arranged in the heating furnace body along the length direction of the heating furnace body, the sliding rail (5) penetrates through the heating cavity, and a bracket (4) matched with the sliding rail (5) is placed on the sliding rail (5).
4. The heat treatment device for an internally toothed ring according to claim 3, characterized in that: the induction heating device further comprises a feeding cylinder (12) arranged on the outer side of the inlet end of the heating furnace body, a feeding plate (13) corresponding to the bracket (4) is arranged on a telescopic shaft of the feeding cylinder (12), and the bottoms of the inlet door (8), the outlet door (10) and the partition door (31) are provided with through holes through which the bracket (4) can pass.
5. The heat treatment device for an internally toothed ring according to claim 1, characterized in that: the heating furnace is characterized in that a heat insulation layer (3) wrapping the induction heating coil (2) is arranged in the heating furnace body, a cooling pipe is arranged in the heat insulation layer (3), and two ends of the cooling pipe are respectively communicated with a water inlet pipe (6) and a water outlet pipe (7).
6. The heat treatment device for an internally toothed ring according to claim 1, characterized in that: the quenching device comprises a fixed base (18), a liquid collecting tank (19) fixed above the base (18) and a supporting plate (21) arranged in the liquid collecting tank (19), wherein a liquid return hole is formed in the bottom of the liquid collecting tank (19), a lifting oil cylinder (20) is arranged below the base (18), a telescopic shaft of the lifting oil cylinder (20) extends into the liquid collecting tank (19) and is fixedly connected with the supporting plate (21), and a plurality of liquid spraying ports (23) are formed in the liquid collecting tank (19).
7. The heat treatment device for an internally toothed ring according to claim 6, characterized in that: the quenching device also comprises a cover plate (25) arranged above the liquid collecting tank (19) and a cover plate oil cylinder (24) for driving the cover plate (25) to lift.
8. The heat treatment device for an internally toothed ring according to claim 1, characterized in that: the extrusion device comprises a fixed bottom plate (26), a support sleeve (29) placed on the bottom plate (26), an extrusion shaft (27) arranged above the support sleeve (29) and an extrusion oil cylinder (28) driving the extrusion shaft (27) to move up and down, wherein the outer diameter of the extrusion shaft (27) is smaller than the inner diameter of the inner gear ring (1), and the inner diameter of the support sleeve (29) is larger than the outer diameter of the mandrel (17) and smaller than the outer diameter of the inner gear ring (1).
9. The heat treatment process for an internally toothed ring according to claim 1, characterized in that: the clamp comprises a lower clamp (32) and an upper clamp (33), the lower clamp (32) comprises two parallel cross rods, the distance between the cross rods is smaller than the diameter of the inner gear ring (1), one ends of the two cross rods are fixedly connected through a connecting rod, the upper clamp (33) comprises a clamping plate and an upper clamping arm which are fixedly connected in sequence, an arc-shaped surface matched with the inner gear ring (1) is arranged on the clamping plate, the end part of the clamping plate is hinged to one cross rod, and a lower clamping arm corresponding to the upper clamping arm is fixedly connected to the other cross rod.
10. A heat treatment process for an inner gear ring is characterized by comprising the following steps: the method comprises the following steps:
a. placing a bracket (4) in an induction heating device on a sliding rail (5), vertically placing an inner gear ring (1) on the bracket (4) through a clamp, opening an inlet door (8), pushing the bracket (4) and the inner gear ring (1) into a separation cavity through a feeding cylinder (12), and then closing the inlet door (8);
b. placing an empty bracket (4) on a sliding rail (5), opening a partition door (31), pushing the empty bracket (4) into a partition cavity through a through hole at the bottom of an inlet door (8) by a feeding cylinder (12), pushing the previous bracket (4) and an inner gear ring (1) into a heating cavity through the empty bracket (4), then closing the partition door (31), and sequentially repeating the step a and the step b;
c. inert gas is injected into the separation cavity and the heating cavity through the air inlet pipe (14), the induction heating coil (2) is electrified to perform induction heating on the inner gear ring (1), after the heating is completed, the outlet door (10) is opened, and the bracket (4) after the heating is completed is pushed out of the heating cavity through the next bracket (4);
d. the mandrel (17) is placed on a supporting plate (21) of the quenching device, the inner gear ring (1) is sleeved on the mandrel (17) through a clamp, a cover plate (25) is driven to descend through a cover plate oil cylinder (24), a liquid collecting tank (19) is covered, cooling liquid is sprayed to the inner gear ring (1) through a liquid spraying opening (23), the inner gear ring (1) is driven to move up and down through a lifting oil cylinder (20), and the quenching of the inner gear ring is completed;
e. carrying out high-temperature tempering on the quenched inner gear ring (1);
f. the inner gear ring (1) after high-temperature tempering is placed on a supporting sleeve (29) in an extrusion device through a clamp, an extrusion shaft (27) is driven to descend through an extrusion oil cylinder (28), and the mandrel (17) is extruded out of the inner gear ring (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188913.XA CN110791642A (en) | 2019-11-28 | 2019-11-28 | Heat treatment device and process for inner gear ring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911188913.XA CN110791642A (en) | 2019-11-28 | 2019-11-28 | Heat treatment device and process for inner gear ring |
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| CN201911188913.XA Pending CN110791642A (en) | 2019-11-28 | 2019-11-28 | Heat treatment device and process for inner gear ring |
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| JP2005336598A (en) * | 2004-04-30 | 2005-12-08 | Ntn Corp | High frequency induction-hardening apparatus |
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| CN205088290U (en) * | 2015-10-29 | 2016-03-16 | 綦江永跃齿轮有限公司 | In -band limit structure's spouts cold type guenching unit |
| CN109487069A (en) * | 2018-12-31 | 2019-03-19 | 兴化东华齿轮有限公司 | A kind of heat treatment method of ring gear control heat-treatment distortion |
| CN210974814U (en) * | 2019-11-28 | 2020-07-10 | 山东润通齿轮集团有限公司 | Heat treatment device for inner gear ring |
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2019
- 2019-11-28 CN CN201911188913.XA patent/CN110791642A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005336598A (en) * | 2004-04-30 | 2005-12-08 | Ntn Corp | High frequency induction-hardening apparatus |
| CN101580890A (en) * | 2009-03-27 | 2009-11-18 | 南京宝色股份公司 | Trolley assembly annealing furnace |
| CN205088290U (en) * | 2015-10-29 | 2016-03-16 | 綦江永跃齿轮有限公司 | In -band limit structure's spouts cold type guenching unit |
| CN109487069A (en) * | 2018-12-31 | 2019-03-19 | 兴化东华齿轮有限公司 | A kind of heat treatment method of ring gear control heat-treatment distortion |
| CN210974814U (en) * | 2019-11-28 | 2020-07-10 | 山东润通齿轮集团有限公司 | Heat treatment device for inner gear ring |
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