CN106244779A - A kind of fully-automatic large-scale rotary hearth furnace carburetion quenching production line device - Google Patents
A kind of fully-automatic large-scale rotary hearth furnace carburetion quenching production line device Download PDFInfo
- Publication number
- CN106244779A CN106244779A CN201610764347.2A CN201610764347A CN106244779A CN 106244779 A CN106244779 A CN 106244779A CN 201610764347 A CN201610764347 A CN 201610764347A CN 106244779 A CN106244779 A CN 106244779A
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- China
- Prior art keywords
- automatic
- carburizing
- furnace
- quenching
- fully
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Classifications
-
- 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
- C21D1/63—Quenching devices for bath quenching
- C21D1/64—Quenching devices for bath quenching with circulating liquids
-
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- C21D9/0037—Rotary furnaces with vertical axis; Furnaces with rotating floor
-
- 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
- C21D9/005—Furnaces in which the charge is moving up or down
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
Abstract
The invention discloses a kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching process units of field of mechanical technique, including automatic rotary lifting storing stand and automatic charging machinery hands, the top of described automatic rotary lifting storing stand and automatic charging machinery hands is provided with input and output material robot track, the inner chamber of described bottom rotating type high-temperature carburizing stove is provided with decile zigzag support beam, this kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching manufacturing technique method, all processes, for being automatically performed operation, need not utilize shop traveller handling material；Different medium can be selected on same production line to quench according to different heat treatment requirements；On same production line, by the combination of different units equipment, carburizing heat treatment, Tempering and Quenching, annealing heat treatment, normalizing heat treatment can be completed, make multifunctional production line truly.
Description
Technical field
The present invention relates to field of mechanical technique, be specially a kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching process units.
Background technology
It is known that Now Domestic is outer strong for large-scale ring class and the heat treatment in advance of dish class machine components and surface chemistry
Heat-transformation processes the car type furnace all using shaft furnace, pit furnace or high energy consumption.Mentioned here large-scale, one refers to a unit shove charge
No less than 5 tons, two refer to that the single diameter of part of ring class or dish class that is heat-treated is not less than 1000mm.Use the life of the above-mentioned type of furnace
Produce line and carry out part heat treatment, need by special heat-resisting frock, and utilize the crane gear in workshop to complete.Wherein, platform
Car stove often completes once to take on the operation of material, also needs to output fervid furnace bottom (chassis) with heated part, makes a large amount of
Heat energy moment lost.Accordingly, there exist the following problem being difficult to avoid that: one, when processed machine components are placed on work
After dress, people complete into stove and the operation come out of the stove by workshop crane gear, make whole operating process under uncontrollable state,
So that affecting product finished heat treatment quality and the repeatability of product heat treatment index.Two, existing shaft furnace, pit furnace in order to
Complete heating and cooling (quenching/air blast cooling) large-scale ring class and disk-like accessory is required for using or by accounting for parts processed weight
The high-nickel material frock of 1/3rd places part, this set high-nickel material frock and with part load heated in stove and
Cooling, effective stocking space of this set high-nickel material frock stove to be taken, these frocks will be with part in stove simultaneously
Being heated together, thus often heat a stove part and have the electric energy of nearly 1/3rd to be absorbed by frock, these electric energy are referred to as
For lost work, heating and cooling procedure also to absorb and to release substantial amounts of heat energy, furthermore frock because of frequent at rapid heat cycle
Environmental condition under work, the life-span that makes of its frock has a greatly reduced quality, and service life is the longest to be maintained 1 year, can consume a large amount of China
Rare high-nickel material.Three, current, the process such as heavy parts heating, carburizing, tempering is all to be placed directly in fixing furnace bottom
On, such as current shaft furnace, pit furnace, batch-type furnace etc..These type of furnaces without exception, its furnace bottom and body of heater for being fixed as one, nothing
Method makes workpiece move up in heating, carburizing or drawing process, merely with forced circulation blower fan ensure part in stove uniformly
Heating and carburizing, if there is the dead angle of hot-fluid and air-flow undoubtedly in a big space, therefore cause heat parts, carburizing or
It is tempered uneven, makes the part after heat treatment deviation always occur or even scrap, as inclined in part hardness deviation and carburized (case) depth
Differences etc., always do not reach and do not make us very satisfactory result, thus constrain the production of high-precision part, and four, at present for large-scale
Part is all to be taken out in stove by workpiece by driving after completing to heat carburizing in stove, and hangs in quenching tank by driving, by
In driving reason, it is impossible in existing oil groove exhaust fume collecting hood installed above, uncovered quenching, thus substantial amounts of cooking fume when causing quenching
The amorphous workshop that is discharged into, thus pollute workshop and breakdown operation environment, even initiation fire.
Summary of the invention
It is an object of the invention to provide a kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching process units, above-mentioned to solve
The carburizing state proposed in background technology is uncontrollable, waste nickel resources and irrational problem that quenches.
For achieving the above object, the present invention provides following technical scheme: a kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching
Process units, including automatic rotary lifting storing stand and automatic charging machinery hands, described automatic rotary lifting storing stand and automatically
The top of feeding manipulator is provided with input and output material robot track, and the right side of described input and output material robot track slidably connects two works
Position input and output material mechanical hand, the left end of described input and output material robot track connects bottom rotating type high-temperature carburizing stove, and described bottom rotating type is high
The inner chamber of temperature carburizer is provided with decile zigzag support beam, and the top left side of described input and output material robot track is provided with quenching tank,
Having two groups of Oil injection cooling pumps on the right-hand member of described quenching tank, the bottom of described Oil injection cooling pump is provided with coolant circulation pump, institute
The right side stating coolant circulation pump is provided with water cooler, and the top of described water cooler is provided with Hydraulic Station, the top of described quenching tank
Connect and have discharging club line.
Preferably, described discharging club line has cleaning machine by cleaning lifting platform connection, and cleaning machine is by automatic multi-fork
Rotary machine hands is connected to bottom rotating type low-temp temper furnace and air-cooled.
Preferably, described bottom rotating type high-temperature carburizing stove includes that furnace wall, the bottom of described furnace wall are provided with support seat, described furnace wall
Being rotatably connected to furnace bottom by sealing oil groove, the bottom of described furnace bottom is provided with revolving support, and the top of described furnace wall is provided with circulation
Blower fan, the inner chamber of described bottom rotating type high-temperature carburizing stove by mounting bracket be provided with temperature measuring equipment, temperature control system and
Carbon potential control system.
Preferably, the inner chamber of described quenching tank is provided with fluid level control device by mounting bracket.
Preferably, the automatic rotary lifting storing stand of described automatic rotary lifting storing stand and automatic charging machinery hands passes through
Mounting bracket is provided with electronic weighing instrument and material detection device.
Compared with prior art, the invention has the beneficial effects as follows: this kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching produces
Device, all processes, for being automatically performed operation, need not utilize shop traveller handling material；Can want according to different heat treatments
Ask, same production line selects different medium quench；On same production line, by the combination of different units equipment,
Can complete carburizing heat treatment, Tempering and Quenching, annealing heat treatment, normalizing heat treatment, make truly is multi-functional
Production line；When user's yield increases, also can newly add required equipment in the both sides of equipment, so that production line possesses
Expand energy space and multi-functional production organizational mode the most flexibly, use bottom rotating type high-temperature carburizing stove, and at circulating fan
Under assistance, make part be greatly improved in heating and the temperature environment of carburizing indoor, air-flow environment, reach uniformly to heat and uniformly ooze
The purpose of carbon, lays a good foundation for producing high-precision part.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is sectional structure schematic diagram at A-A of the present invention.
In figure: 1 automatic rotary lifting storing stand and automatic charging machinery hands, 2 input and output material robot track, 3 liang of stations enter
Discharging mechanical hand, 4 bottom rotating type high-temperature carburizing stoves, 41 furnace walls, 42 support seats, 43 furnace bottoms, 44 revolving support, 45 circulating fans, 5 etc.
Divide zigzag support beam, 6 quenching tanks, 7 Oil injection cooling pumps, 8 coolant circulation pumps, 9 water coolers, 10 Hydraulic Stations, 11 discharging clubs
Line.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1-2, the present invention provides a kind of technical scheme: a kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching produces
Device, including automatic rotary lifting storing stand and automatic charging machinery hands 1, it is characterised in that: described automatic rotary lifting storing
The top of platform and automatic charging machinery hands 1 is provided with input and output material robot track 2, and the right side of described input and output material robot track 2 is sliding
Be dynamically connected two station input and output material mechanical hands 3, and the left end of described input and output material robot track 2 connects bottom rotating type high-temperature carburizing stove
4, the inner chamber of described bottom rotating type high-temperature carburizing stove 4 is provided with decile zigzag support beam 5, the top of described input and output material robot track 2
It is provided with quenching tank 6 on the left of portion, the right-hand member of described quenching tank 6 has two groups of Oil injection cooling pumps 7, described Oil injection cooling pump 7
Bottom is provided with coolant circulation pump 8, and the right side of described coolant circulation pump 8 is provided with water cooler 9, and the top of described water cooler 9 sets
Having Hydraulic Station 10, the top of described quenching tank 6 connects discharging club line 11.
Wherein, described discharging club line 11 has cleaning machine by cleaning lifting platform connection, and workpiece can be carried out by cleaning machine
Clean, and cleaning machine is connected to bottom rotating type low-temp temper furnace and air-cooled by automatic multi-fork rotary machine hands, described
Bottom rotating type high-temperature carburizing stove 4 includes that furnace wall 41, the bottom of described furnace wall 41 are provided with support seat 42, and Seal Oil is passed through in described furnace wall 41
Groove is rotatably connected to furnace bottom 43, and the bottom of described furnace bottom 43 is provided with revolving support 44, and the top of described furnace wall 41 is provided with circulated air
Machine 45, the inner chamber of described bottom rotating type high-temperature carburizing stove 4 by mounting bracket be provided with temperature measuring equipment, temperature control system and
Carbon potential control system, the temperature in carburizer can be carried out by temperature measuring equipment, temperature control system and carbon potential control system
Measure and control, it is ensured that the high efficiency of carburizing and safety, described bottom rotating type high-temperature carburizing stove 4 includes furnace wall 41, described furnace wall
The bottom of 41 is provided with support seat 42, and described furnace wall 41 is rotatably connected to furnace bottom 43, the bottom of described furnace bottom 43 by sealing oil groove
Being provided with revolving support 44, the top of described furnace wall 41 is provided with circulating fan 45, and the inner chamber of described bottom rotating type high-temperature carburizing stove 4 passes through
Mounting bracket is provided with temperature measuring equipment, temperature control system and carbon potential control system, and the inner chamber of described quenching tank 6 is by peace
What dress support was provided with fluid level control device, described automatic rotary lifting storing stand and automatic charging machinery hands 1 rotates liter automatically
Fall storing stand is provided with electronic weighing instrument and material detection device by mounting bracket.
Operation principle: by the feeding manipulator on automatic rotary lifting storing stand and automatic charging machinery hands 1 by one or
The product of the identical material of more than one piece and shape is transported on automatic rotary lifting storing stand, two station input and output material mechanical hands 3 move to
On the automatic rotary lifting storing stand of automatic rotary lifting storing stand and automatic charging machinery hands 1, deliver to turn the end by workpiece transfer
In formula high-temperature carburizing stove 4, two station input and output material mechanical hands 3 are return, and by automatically setting different heat time heating times and temperature, start
Workpiece does heating Carburization Treatment, and after heating carburizing completes, two station input and output material mechanical hands 3 move to bottom rotating type high-temperature carburizing stove
4, capture the workpiece after carburizing completes, workpiece is moved to quenching lifting platform, two station input and output material mechanical hands 3 are return, quenching
Lifting platform drops to, in quenching tank 6, proceed by quenching, and after having quenched, quenching lifting platform rises, two station input and output material machineries
Hands 3 grabbing workpiece moves to discharging club line 11, and two station input and output material mechanical hands 3 are return, and discharging club line 11 drives workpiece
Mobile to cleaning on lifting platform, cleaning lifting platform drops to, in cleaning machine, output and be carried out, and after having cleaned, cleans lifting
Platform rises, and automatic multi-fork rotary machine hands moves to cleaning on lifting platform, and grabbing workpiece moves to bottom rotating type low-temp temper furnace
On lifting platform, bottom rotating type low-temp temper furnace lifting platform declines, and proceeds by lonneal, after lonneal completes, and lonneal
Stove lifting platform rises, and automatic multi-fork rotary machine hands moves to tempering furnace lifting platform, and grabbing workpiece moves to air-cooled platform
Air-cooled, air-cooled complete after, automatic multi-fork rotary machine hands moves to air-cooled platform, and grabbing workpiece moves to fixing discharging platform
On, start discharging.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (5)
1. a fully-automatic large-scale rotary hearth furnace carburizing and quenching process units, including automatic rotary lifting storing stand and automatic charging
Mechanical hand (1), it is characterised in that: the top of described automatic rotary lifting storing stand and automatic charging machinery hands (1) is provided with turnover
Material robot track (2), the right side of described input and output material robot track (2) slidably connects two stations input and output material mechanical hand (3),
The left end of described input and output material robot track (2) connects bottom rotating type high-temperature carburizing stove (4), described bottom rotating type high-temperature carburizing stove
(4) inner chamber is provided with decile zigzag support beam (5), and the top left side of described input and output material robot track (2) is provided with quenching tank
(6), the right-hand member of described quenching tank (6) having two groups of Oil injection cooling pumps (7), the bottom of described Oil injection cooling pump (7) is provided with
Coolant circulation pump (8), the right side of described coolant circulation pump (8) is provided with water cooler (9), and the top of described water cooler (9) sets
Having Hydraulic Station (10), the top of described quenching tank (6) connects discharging club line (11).
A kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching process units the most according to claim 1, it is characterised in that: institute
Stating discharging club line (11) has cleaning machine by cleaning lifting platform connection, and cleaning machine is divided by automatic multi-fork rotary machine hands
Lian Jie there be bottom rotating type low-temp temper furnace and air-cooled.
A kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching process units the most according to claim 1, it is characterised in that: institute
State bottom rotating type high-temperature carburizing stove (4) and include that furnace wall (41), the bottom of described furnace wall (41) are provided with support seat (42), described furnace wall
(41) being rotatably connected to furnace bottom (43) by sealing oil groove, the bottom of described furnace bottom (43) is provided with revolving support (44), described stove
The top of wall (41) is provided with circulating fan (45), and the inner chamber of described bottom rotating type high-temperature carburizing stove (4) is provided with by mounting bracket
Temperature measuring equipment, temperature control system and carbon potential control system.
A kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching process units the most according to claim 1, it is characterised in that: institute
The inner chamber stating quenching tank (6) is provided with fluid level control device by mounting bracket.
A kind of fully-automatic large-scale rotary hearth furnace carburizing and quenching process units the most according to claim 1, it is characterised in that: institute
The automatic rotary lifting storing stand stating automatic rotary lifting storing stand and automatic charging machinery hands (1) is provided with by mounting bracket
Electronic weighing instrument and material detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764347.2A CN106244779A (en) | 2016-08-30 | 2016-08-30 | A kind of fully-automatic large-scale rotary hearth furnace carburetion quenching production line device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764347.2A CN106244779A (en) | 2016-08-30 | 2016-08-30 | A kind of fully-automatic large-scale rotary hearth furnace carburetion quenching production line device |
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| Publication Number | Publication Date |
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| CN106244779A true CN106244779A (en) | 2016-12-21 |
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| CN201610764347.2A Pending CN106244779A (en) | 2016-08-30 | 2016-08-30 | A kind of fully-automatic large-scale rotary hearth furnace carburetion quenching production line device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263547A (en) * | 2017-08-10 | 2017-10-20 | 北京中科通用能源环保有限责任公司 | Manipulator distributing device |
| CN108517393A (en) * | 2018-07-10 | 2018-09-11 | 成都华聚科技有限公司 | A kind of Full-automatic high-temperature heat treatment cycle system |
| CN109103016A (en) * | 2018-10-16 | 2018-12-28 | 江西特种变压器厂 | A kind of drawer type coiling and rotation solidify the device being integrated |
| CN110699633A (en) * | 2019-11-27 | 2020-01-17 | 特诺恩技术（天津）有限公司 | Charging and discharging method of annular rotary-bottom type gas carburizing furnace for gear carburizing heat treatment |
| CN110835721A (en) * | 2019-11-27 | 2020-02-25 | 特诺恩技术（天津）有限公司 | Charging and discharging mechanism of large annular rotary bottom type gas carburizing furnace |
| CN112795739A (en) * | 2020-12-04 | 2021-05-14 | 辽沈工业集团有限公司 | Continuous automatic quenching system for heat treatment of projectile body |
| CN114182194A (en) * | 2022-01-13 | 2022-03-15 | 浙江伟刚自动化设备有限公司 | Universal joint sleeve blank carburizing and quenching heat treatment equipment and treatment process thereof |
| CN114196818A (en) * | 2021-11-17 | 2022-03-18 | 哈工大机器人南昌智能制造研究院 | Automatic feeding process of tempering furnace |
| CN114293136A (en) * | 2021-12-31 | 2022-04-08 | 重庆市星极齿轮有限责任公司 | Workpiece heat treatment system |
| CN116716574A (en) * | 2023-06-12 | 2023-09-08 | 西南交通大学 | Low-carbon steel micro-carburizing isothermal quenching system |
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| CN202671662U (en) * | 2012-07-09 | 2013-01-16 | 陈曦 | Surface chemical heat treatment device for mechanical parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263547A (en) * | 2017-08-10 | 2017-10-20 | 北京中科通用能源环保有限责任公司 | Manipulator distributing device |
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| CN109103016A (en) * | 2018-10-16 | 2018-12-28 | 江西特种变压器厂 | A kind of drawer type coiling and rotation solidify the device being integrated |
| CN110699633A (en) * | 2019-11-27 | 2020-01-17 | 特诺恩技术（天津）有限公司 | Charging and discharging method of annular rotary-bottom type gas carburizing furnace for gear carburizing heat treatment |
| CN110835721A (en) * | 2019-11-27 | 2020-02-25 | 特诺恩技术（天津）有限公司 | Charging and discharging mechanism of large annular rotary bottom type gas carburizing furnace |
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| CN114293136A (en) * | 2021-12-31 | 2022-04-08 | 重庆市星极齿轮有限责任公司 | Workpiece heat treatment system |
| CN114182194A (en) * | 2022-01-13 | 2022-03-15 | 浙江伟刚自动化设备有限公司 | Universal joint sleeve blank carburizing and quenching heat treatment equipment and treatment process thereof |
| CN116716574A (en) * | 2023-06-12 | 2023-09-08 | 西南交通大学 | Low-carbon steel micro-carburizing isothermal quenching system |
| CN116716574B (en) * | 2023-06-12 | 2024-01-12 | 西南交通大学 | Low-carbon steel micro-carburizing isothermal quenching system |
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Application publication date: 20161221 |