CN85204461U - Continuous furnace for heat-treatment of metal parts - Google Patents
Continuous furnace for heat-treatment of metal parts Download PDFInfo
- Publication number
- CN85204461U CN85204461U CN198585204461U CN85204461U CN85204461U CN 85204461 U CN85204461 U CN 85204461U CN 198585204461 U CN198585204461 U CN 198585204461U CN 85204461 U CN85204461 U CN 85204461U CN 85204461 U CN85204461 U CN 85204461U
- Authority
- CN
- China
- Prior art keywords
- furnace
- workpiece
- treatment
- chamber
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
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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
- C21D9/0006—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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
- F27B9/028—Multi-chamber type furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The utility model relates to a continuous furnace for heat-treatment of metal parts which has two treatment rooms with furnace doors, wherein, the work piece can successively pass through the treatment room. As a result, a plurality of workpieces can be simultaneously treated, and the workpiece can be periodically moved into the treatment room; the workpiece can be moved away from the treatment room after heat-treatment. The different techniques and treating times of the workpiece can be treated through the double segments carburizing process, in particular to the workpiece with different carburized depths. The continuous furnace for heat-treatment of metal parts is characterized in that the temperature and the atmosphere are different in a plurality of furnace chambers of the treatment rooms, and each of the furnace chambers has a feeding gate and a discharge gate; each of the treatment rooms (2, 3) can be designed through the circular cycle furnace, and the furnace bottom for cycle rotation is arranged on the treatment room. One of the operation furnace doors is a partition door which is divided from the adjacent treatment room (3).
Description
The present invention relates to a kind of continuous furnace that metal works is heat-treated.This stove have at least two continous ways handle will, interior in successively by workpiece, and a plurality of workpiece are heat-treated, the operation fire door all is equipped with in each chamber, each workpiece is periodically by this fire door and enter in the process chamber.After heat-treating in process chamber, workpiece promptly moves once more, finally is sent.This equipment particularly is used in the protective gas metal works is carried out two sections carburizings, and it has a furnace chamber, furnace chamber be divided into several have different temperature and (or) process chamber of furnace gas, and a fire door that enters and send workpiece is installed respectively.In having first process chamber of high carbon potential, carry out excess carburizing more, in second process chamber, spread--carbonization treatment has so just reached the carburizing depth value of final regulation.
Up to the present, known is the continous way through furnace.This class stove has a shortcoming, and promptly the processing time of each workpiece is immutable.Enter each workpiece in the stove, will send outside the stove by an immutable order by a preset time at interval.This shows that the purposes of this class continuous furnace is limited, they are suitable for handling a large amount of identical workpiece.Must carry out indiscriminate or identical processing to them.
In addition, everybody also understands stove at the bottom of being used for the heat treated revolving burner of metal works.By a charging fire door enter in the stove and be positioned over an annular furnace at the bottom of workpiece, continuously by certain direction of rotation and along a very long path through stove.After processing procedure finishes, still by workpiece being sent fire door (United States Patent (USP) 4,412,813) with the same order of charging.Therefore, stove is still by known continous way principle and uses at the bottom of this class revolving burner, and promptly all workpiece are identical in the time of staying of each treating stations (process chamber).This known furnace bottom stove also has another shortcoming, i.e. furnace chamber subregion not can not make the carbon potential difference in each district yet.Like this, in actual applications, for example carburizing, the stove maximum only can reach the carburized layer depth of 0.6mm at the bottom of the revolving burner.Therefore, can not obtain darker carburized layer depth, even if it is can obtain, also extremely uneconomical.
In view of the foregoing, the present invention proposes such target, the heat treating continuous furnace of the metal works of the sort of form of mentioning when promptly developing a kind of the beginning.So just, can avoid shortcoming recited above, and simultaneously treatment process different and (or) workpiece of asynchronism(-nization), particularly can carry out carburizing, and the different workpiece of carburized layer depth, thereby can utilize the disposal ability of stove fully by two segmented modes.Owing to can handle the different workpiece of size, size and quantity simultaneously, so stove just has purposes widely.
In order to realize above-mentioned target, the present invention advises that this equipment is provided with 2 process chambers by circular cycle stove design, and has rotatable furnace bottom.By one embodiment of the invention, each operates fire door can open 45 ° at least, preferably 180 °.One in the fire door is the partition door that separates with adjacent process chamber.
Main points of the present invention are, carry out the different treatment process and the workpiece in processing time in order to handle those requirements with the time inequality, thereby design a continuous furnace, this stove can be sent workpiece with the another kind of time sequencing different with the time sequencing of charging with the workpiece that disposes.Like this, it is unequal just must making workpiece movement at least one process chamber, after soon workpiece disposed by the different time, just sends from the process chamber at place.
Therefore just might in a process chamber,,, also promptly move each workpiece with the identical time promptly with constant order by common mode.And before or after it another process chamber of face, then more be designed to one can be in the storage compartment of two rightabouts motions.Heat-treat in the workpiece atmosphere therein.But the position that a plurality of place work pieces are arranged in this storage compartment.For charging and feeding, these positions can be moved before the operation fire door.Charge time, processing time and discharge time can be controlled by the heat treatment process of a regulation.Can there be in line or several in line storing positions this storage compartment.According to another embodiment of the present invention, employing be stove at the bottom of the revolving burner.It is by circular cycle stove design, and a furnace bottom that can rotate at a direction and rightabout thereof by the cycle is arranged, and its stocking cycle is rule or irregular, and it has constituted process chamber.The direction of rotation of furnace bottom can select arbitrarily and depend on, where is the room or where parks a workpiece to be unloaded.Common situation is to realize motion irregular cycle of furnace bottom by the automatic control system of heat treatment and discharging.Yet, when handling identical in a large number workpiece, may also be adjusted to the periodic motion of rule.
In order to obtain to be up to the carburized (case) depth of 1.8mm economically with two sections carburization process, according to a design of the present invention following suggestion is proposed, furnace chamber is designed to Double Circle cycle stove, and its first furnace chamber is used to carry out high carbon potential carburizing, and second furnace chamber then is used to hang down the diffusion of carbon potential.Designed furnace chamber is two independent circular cycle stoves, separates each other by a partition door.Charging fire door and discharging fire door are preferably on the axis.In order to enlarge its flexibility, by other furnace chambers of circular cycle stove design, can as planet be connected first and (or) on second furnace chamber.Especially in this case, promptly need auto parts on the one hand, as gear, motor piece carries out single processing, and other direction also needs loose mail is heat-treated as bolt, nut.At this moment, with the present invention by the revolving burner of continuous furnace design at the bottom of stove to combine with continous way through furnace at charging position and discharging position be suitable.They respectively can be pressed heating clamber or all hot cell uses.Usually connect a quenching chamber in terminal.
In this stove, might handle simultaneously the workpiece that requires different carburized (case) depths.For example, can (carry out high carbon potential carburizing) in first process chamber, the requirement of packing into simultaneously has the workpiece of 0.5mm and 1.2mm carburized (case) depth.Processing time according to two kinds of furnace charges requires difference, can not control with computer by corresponding time difference, so that workpiece enters in second chamber (diffuser casing) by partition door.Simultaneously, control stove direction of rotation so that its motion by way of the shortest.Used computer to control whole stove.It can be in accordance with regulations treatment temperature control carbon potential and carburizing and diffusion time controlled, simultaneously also can be according to the ability adjustment charging process of stove.
Details of the present invention, characteristics and advantage can be understood by following description of drawings.This figure is depicted as one and adopts protection gas that metal works is carried out multistage heat treated continuous furnace, and its two process chambers are that it has the furnace bottom that can be rotated periodically according to the circular cycle stove of the conceptual design of the present invention's proposition.
By the workpiece movement direction, the each several part of stove is arranged as follows successively:
Heating clamber 1 is a through type heating furnace,
Carburizing chamber 2 is a circular cycle stove,
Diffuser casing 3 is a circular cycle stove,
All hot cell 4 is a through type heating furnace,
5 is a quenching chamber.
Each furnace chamber constitutes a continuous furnace, can carry out two sections carburizings to workpiece with protection gas.Workpiece is positioned on the iron bar 6 or on the support, or is put in the charging basket, and enters in the stove by a feed space 7.Feed space 7 is equipped with a feeding gate 8.Feed space 7 is parts of heating clamber 1, and it makes heating clamber and isolate from outer air.After the partition door 9 that leads to heating clamber 1 is closed, get final product charging.
Heating clamber 1 can be by a pusher cylinder 10 chargings after opening partition door 9.Heat treated part passes through heating clamber 1 by the processing cycle, simultaneously in atmosphere a kind of not carburizing, that do not produce carbon black, from 830 ℃ of carburizing temperatures that are heated to 900 ℃.Heating clamber 1 wherein is equipped with an electric heater unit and is divided into two thermal treatment zone (not shown) by the continuous passing furnace design.Adopt methane rich combustion gas and air as protection gas.
A device for discharging 11 is equipped with at the left end place of heating clamber 1 shown in the figure, is a chain assembly.After opening partition door 12, this device can be sent the heat treatment part that is arranged in this place into the carburizing chamber 2 that is communicated with heating clamber.Heating clamber 2 is designed to circular periodic stove.It at the bottom of the converter 13, can rotate on both direction once in accordance with regulations, and 18 blowing positions are arranged.According to the requirement in workpiece processing time, this furnace bottom can be regularly and irregularly, rotated on one or opposite rotation direction by computer with controlling.In order to carry out carburizing, can carburizing chamber 2 be heated to 900 ℃ by heating element heater at 4 thermal treatment zone devices with high carbon potential.Can adopt high methane gas and add gas shield gas.The time that workpiece needs to handle in carburetted gas is to be determined by the carburized layer depth of stipulating.Carburetted gas must not produce carbon black.After reaching official hour, the workpiece at the bottom of the revolving burner on 13 promptly rotates to the discharging position.Herein, a partition door 14 that leads to diffuser casing 3 is promptly opened.One chain type material-pulling device 15 is about to workpiece and is pushed in this chamber.This chamber is designed to a less circular cycle stove.
All hot cell 4 is designed by a through type stove.It is divided into two thermals treatment zone (heating element heater is not shown), workpiece can be heated to the temperature of regulation, and for example hardening heat is 850 ℃.Can adopt high methane gas/interpolation gas+air as protection gas.
All in the hot cell 4 workpiece is being heated to hardening heat, protection gas carbon gesture wherein is the phosphorus content of workpiece extexine.In order in continuous passing furnace, to transport workpiece, a pusher cylinder 18 is installed also.Workpiece the cooling and after the hardening heat soaking, a discharge position that promptly arrives the right side in two workpiece shown in the figure.Perhaps can workpiece be transported on the hoistable platform of quenching chamber 5 oil hardening grooves along illustrated chain-dotted line direction, perhaps by a fire door 20 dischargings by an inner chain driver 19 of installing.
By described stove, can carry out two sections Carburization Treatment to various workpiece according to workpiece material, shape, size and quantity.Like this, just advantage of continuous passing furnace itself (drive automatically, high firing rate) and travelling workpiece position had the advantages at the bottom of the revolving burner of high degree of flexibility.
Shown by reference numeral
1 heating clamber
Carburizing chambers 2
3 diffuser casings
4 equal hot cells
5 quenching chambers
6 brandreths
7 feed spaces
8 charging fire doors
9 partition doors
10 pusher cylinders
11 chain assemblies
12 partition doors
At the bottom of 13 revolving burners
14 partition doors
15 chain assemblies
16 partition doors
17 chains
18 pusher cylinders
19 chain type driving devices
20 Dump gate
Claims (4)
1, uses the equipment that continuous furnace is heat-treated metal works; especially in protective gas, metal works being carried out two sections carburizings; it has a furnace chamber; this furnace chamber be divided into several have different temperatures and (or) process chamber of furnace gas; and a fire door that enters and send workpiece is installed respectively; it is characterized in that: two process chambers (2; 3) by circular cycle stove design; it has at the bottom of the revolving burner, and one of them operation fire door is to be used for the partition door (14) of being separated by with adjacent process chamber (3).
2, the equipment that proposes according to claim 1 is characterized in that operating fire door and can remove 45 ° at least each other.
3, the equipment that propose according to claim 1 or 2, it is characterized in that by other process chambers of circular cycle stove design will by planetary mode with first with (or) second process chamber be connected.
4, according to the equipment of a proposition in the claim 1 to 3, it is characterized in that one through type stove being arranged in charging one side and each device of discharging one side, as heating clamber (1) and equal hot cell (4), the place preferably settles a quenching chamber in equal hot cell respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3441338.3 | 1984-11-13 | ||
| DE19843441338 DE3441338A1 (en) | 1984-11-13 | 1984-11-13 | Process for heat-treating metallic workpieces, using a straight-flow or continuous pusher-type furnace, and equipment for carrying out this process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85204461U true CN85204461U (en) | 1987-06-03 |
Family
ID=6250111
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85107934 Expired CN1014078B (en) | 1984-11-13 | 1985-10-28 | Process for heat treatment of metallic pieces by continous furnace and apparatus thereof |
| CN198585204461U Expired - Lifetime CN85204461U (en) | 1984-11-13 | 1985-10-28 | Continuous furnace for heat-treatment of metal parts |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85107934 Expired CN1014078B (en) | 1984-11-13 | 1985-10-28 | Process for heat treatment of metallic pieces by continous furnace and apparatus thereof |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS61119665A (en) |
| CN (2) | CN1014078B (en) |
| AT (1) | AT392653B (en) |
| DE (1) | DE3441338A1 (en) |
| SU (1) | SU1487818A3 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63145854U (en) * | 1986-11-25 | 1988-09-27 | ||
| DE3640325C1 (en) * | 1986-11-26 | 1988-02-04 | Ipsen Ind Internat Gmbh | Device for the heat treatment of metallic workpieces in a carbonizing atmosphere |
| US4763880A (en) * | 1987-04-03 | 1988-08-16 | Holcroft/Loftus Inc. | Rotary hearth multi-chamber, multi-purpose furnace system |
| DE3726802A1 (en) * | 1987-08-12 | 1989-02-23 | Aichelin Gmbh | Method of heat treatment of metal workpieces as well as device for implementing the method |
| DE4303686C2 (en) * | 1992-10-07 | 1995-11-30 | Iob Ind Ofen Bau Gmbh | Furnace plant and method for the heat treatment of metallic workpieces |
| DE19514289B4 (en) * | 1995-04-24 | 2006-09-21 | Loi Thermprocess Gmbh | Furnace plant for heat treatment of workpieces |
| DE19737508C1 (en) * | 1997-08-28 | 1999-01-21 | Brenntechnik Gruen Gmbh | Furnace for heating ceramics |
| DE19952397A1 (en) * | 1999-10-29 | 2001-05-03 | Loi Thermprocess Gmbh | Rotary hearth furnace for the heat treatment of workpieces |
| DE10256621B3 (en) * | 2002-12-03 | 2004-04-15 | Benteler Automobiltechnik Gmbh | Continuous furnace used in the production of vehicle components, e.g. B-columns, comprises two zones lying opposite each other and separated from each other by a thermal insulating separating wall |
| DE102005033042B3 (en) * | 2005-07-15 | 2006-07-27 | Audi Ag | Preheating of e.g. sheet for hot-pressing in automobile industry, employs heat released by cooling- and deformation processes, to preheat workpieces before forming |
| CN102191451B (en) * | 2011-04-19 | 2013-06-19 | 哈尔滨意锋稀土材料开发有限公司 | Double-hearth continuous rare earth carburizing equipment and process thereof |
| SE535815C2 (en) | 2011-05-24 | 2013-01-02 | Automation Press And Tooling A P & T Ab | Method and apparatus for reducing the heat loss of a heated workpiece |
| CN102312187B (en) * | 2011-09-28 | 2012-11-07 | 黄山学院 | Complete equipment for strengthening treatment of cutter surface |
| 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 |
| RU209172U1 (en) * | 2020-09-15 | 2022-02-04 | Акционерное общество "Энергия" (АО "Энергия") | NICKEL TAPE CARBURIZER |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1783156A (en) * | 1928-05-11 | 1930-11-25 | George J Hagan Company | Heat-treating apparatus |
| US2013905A (en) * | 1933-02-04 | 1935-09-10 | Jr James L Adams | Circular ingot heating furnace |
| FR1252645A (en) * | 1959-11-23 | 1961-02-03 | Vallourec | Installation for heating metals by direct flame at high temperature without oxidation |
| US3598381A (en) * | 1969-02-26 | 1971-08-10 | Holcroft & Co | Continuous carburizing furnace |
| US3998703A (en) * | 1975-02-06 | 1976-12-21 | Salem Corporation | Method of treating materials on a rotary hearth |
| US4412813A (en) * | 1982-02-02 | 1983-11-01 | Alco Standard Corporation | Rotary hearth furnace and method of loading and unloading the furnace |
| DE3435376C2 (en) * | 1984-09-27 | 1996-09-12 | Loi Ipsen Holding Gmbh | Process for heat treatment of workpieces |
| SE450389B (en) * | 1984-10-02 | 1987-06-22 | Volvo Ab | METHOD AND PLANT FOR HEAT TREATMENT OF DETAILS WITH VARIOUS REQUIREMENTS FOR HEAT TREATMENT TIME |
-
1984
- 1984-11-13 DE DE19843441338 patent/DE3441338A1/en active Granted
-
1985
- 1985-09-16 AT AT270185A patent/AT392653B/en not_active IP Right Cessation
- 1985-10-17 SU SU853964398A patent/SU1487818A3/en active
- 1985-10-28 CN CN 85107934 patent/CN1014078B/en not_active Expired
- 1985-10-28 CN CN198585204461U patent/CN85204461U/en not_active Expired - Lifetime
- 1985-11-08 JP JP24912485A patent/JPS61119665A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| CN85107934A (en) | 1986-07-09 |
| DE3441338C2 (en) | 1988-04-14 |
| ATA270185A (en) | 1990-10-15 |
| JPH0116307B2 (en) | 1989-03-23 |
| DE3441338A1 (en) | 1986-05-15 |
| SU1487818A3 (en) | 1989-06-15 |
| AT392653B (en) | 1991-05-27 |
| JPS61119665A (en) | 1986-06-06 |
| CN1014078B (en) | 1991-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |