EP0198871A1 - Procede et appareil de traitement thermique, de preference la cementation. - Google Patents
Procede et appareil de traitement thermique, de preference la cementation.Info
- Publication number
- EP0198871A1 EP0198871A1 EP19850905124 EP85905124A EP0198871A1 EP 0198871 A1 EP0198871 A1 EP 0198871A1 EP 19850905124 EP19850905124 EP 19850905124 EP 85905124 A EP85905124 A EP 85905124A EP 0198871 A1 EP0198871 A1 EP 0198871A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- furnace
- heat treatment
- articles
- installation
- ring
- 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.)
- Granted
Links
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
-
- 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
Definitions
- the present invention relates to a method of heat treatment, especially case-hardening, of articles with varying requirements as to heat treatment time.
- the invention also relates to a heat treatment instal- lation particularly suited to carrying out said method,
- continuous case hardening up to now pusher type installations have been used, in which the articles to be hardened are placed on metal skidding pallets, which are inserted through a feed-in opening at one end of the heat treatment furnace, and after heat treatment has been completed, are taken out through an exit opening at the opposite end of the furnace.
- the articles are heated to the heat treatment temperature and kept at this temperature as long as is required to achieve the desired carbonization depth.
- the method is based on the principle: first in - first out, and presupposes that all the articles inserted at the same time into the furnace are to have the same carbonization depth and therefore the same heat treatment time. If the assortment of articles in the heat treatment installa ⁇ tion contains articles requiring different carboniza ⁇ tion depths, which is often the case, these cannot be mixed in the furnace, since those articles requiring a short heat treatment time cannot be taken out before those requiring a longer treatment time. The result will be low utilization of capacity, when a few articles are to have a long heat treatment time and the available furnace space cannot at the same time be used for articles requiring a shorter treatment time.
- the purpose of the present invention is to achieve a method which makes it possible to better utilize available capacity by making it possible to treat at the same time articles which are to have differing carbonization depths.
- An installation particularly suited to carrying out the method according to the invention comprises a ring furnace known per se with a rotatable carrier for the articles and is characterized in that the discharge opening from a separate heating-up furnace is connected directly to the input opening of the ring furnace.
- all the articles are heated in the heating-up furnace to the heat treatment temperature of the heat treatment furnace.
- the articles to be heat-treated for 1.5 hours can be inserted into the heat treatment furnace after the articles to be treated for 3.5 hours, and be taken out before these, without requiring a change in the temperature or atmosphere of the heat treatment furnace.
- a ring furnace this can be done quite simply.
- Each article is time-monitored, preferably via a computer system, and is advanced to the exit point from the ring furnace after heat treatment has been completed.
- 1 designates a feeding station for articles to be case-hardened.
- the articles are placed on metal skidding pallets 2, on which the artic ⁇ les are then transported through the installation.
- the pallets are transferred to a conveyor 4 and are conveyed thereon through a washing station 5 and back to the conveyor 3 via a conveyor 6, and from there to a conveyor 7, by means of which the skidding pallets 2 are fed into the heat treatment furnace 8.
- the pallets are advanced to a heating up furnace 9, in which the articles are heated up to their heat treatment temperature, e.g. ca 900°C.
- the heating-up furnace 9 is attached directly to a ring furnace 10, in which the pallets after heat ⁇ ing of the articles are placed on a turn-table (as is indicated by the arrows in the figure). Regardless of the order in which the pallets are fed into the furnace 10, anyone of the pallets can now be removed by virtue of the fact that the turn-table can be advanced as many steps as are desired in either direction in order to place the selected pallet at the outlet 11 of the furnace 10. .
- the articles After treatment has been completed in the ring furnace 10, the articles are.transferred to a diffusion furnace 12 and from there either directly to a packing robot 13 or to an oil bath 14. From the oil bath 14, the articles are conveyed via conveyors 3 and 4 once again through the washing station 5 and finally to a tempering furnace 15, from which the articles are conveyed out to the conveyor 3»
- the heat treatment installation shown and described is suitably controlled by a computerized control system which keeps track of where each indi ⁇ vidual pallet is at each moment and times the various operations, so that all of the articles receive the proper heat treatment period independently of the order in which they are fed into the installation.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85905124T ATE39949T1 (de) | 1984-10-02 | 1985-09-30 | Verfahren und vorrichtung zur waermebehandlung, insbesondere zur einsatzhaertung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8404926 | 1984-10-02 | ||
SE8404926A SE450389B (sv) | 1984-10-02 | 1984-10-02 | Metod och anleggning for vermebehandling av detaljer med varierande krav pa vermebehandlingstid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0198871A1 true EP0198871A1 (fr) | 1986-10-29 |
EP0198871B1 EP0198871B1 (fr) | 1989-01-11 |
Family
ID=20357207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19850905124 Expired EP0198871B1 (fr) | 1984-10-02 | 1985-09-30 | Procede et appareil de traitement thermique, de preference la cementation |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0198871B1 (fr) |
JP (1) | JPS62500529A (fr) |
DE (1) | DE3567479D1 (fr) |
SE (1) | SE450389B (fr) |
WO (1) | WO1986002104A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0735149A1 (fr) * | 1995-03-31 | 1996-10-02 | Ipsen Industries International Gesellschaft Mit Beschränkter Haftung | Dispositif pour le traitement thermique d'articles métalliques sous vide |
WO1998008988A1 (fr) * | 1996-08-30 | 1998-03-05 | Franz Hillingrathner | Four rotatif pour traitement de pieces |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3441338A1 (de) * | 1984-11-13 | 1986-05-15 | Ipsen Industries International Gmbh, 4190 Kleve | Verfahren zur waermebehandlung metallischer werkstuecke unter verwendung eines durchlauf- oder durchstossofens sowie vorrichtung zum durchfuehren dieses verfahrens |
DE3640325C1 (de) * | 1986-11-26 | 1988-02-04 | Ipsen Ind Internat Gmbh | Vorrichtung zur Waermebehandlung metallischer Werkstuecke in einer Kohlungsatmosphaere |
US5187670A (en) * | 1990-11-05 | 1993-02-16 | Caterpillar Inc. | Control system for scheduling parts in a heat-treating process |
DE19635257C1 (de) * | 1996-08-30 | 1998-03-12 | Franz Hillingrathner | Rundtaktofen zum Behandeln von Werkstücken |
EP2186916B1 (fr) | 2008-11-17 | 2013-10-02 | LOI Thermprocess GmbH | Procédé et installation de cémentation continue |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2013905A (en) * | 1933-02-04 | 1935-09-10 | Jr James L Adams | Circular ingot heating furnace |
DE971225C (de) * | 1943-10-13 | 1958-12-31 | Aeg | Drehherdofen mit angeschlossener Kuehlkammer |
DE1201380B (de) * | 1958-05-07 | 1965-09-23 | Lee Wilson | Verfahren und Vorrichtung zur Waerme-behandlung von aufgelockerten Metallbandspulen |
US3112918A (en) * | 1961-03-28 | 1963-12-03 | Salem Brosius Inc | Rotary hearth furnace control |
CA980040A (en) * | 1971-09-07 | 1975-12-16 | John P. Stallings | Homogeneously colored low profile unsaturated polyester moldings and preparations thereof |
US3779697A (en) * | 1972-02-28 | 1973-12-18 | Morgan Construction Co | Means and method of heating and handling large coiled billet rod for metal rolling |
JPS58217625A (ja) * | 1982-06-09 | 1983-12-17 | Daido Steel Co Ltd | 熱処理装置 |
-
1984
- 1984-10-02 SE SE8404926A patent/SE450389B/sv not_active IP Right Cessation
-
1985
- 1985-09-30 WO PCT/SE1985/000377 patent/WO1986002104A1/fr not_active Application Discontinuation
- 1985-09-30 JP JP50452385A patent/JPS62500529A/ja active Pending
- 1985-09-30 DE DE8585905124T patent/DE3567479D1/de not_active Expired
- 1985-09-30 EP EP19850905124 patent/EP0198871B1/fr not_active Expired
Non-Patent Citations (1)
Title |
---|
See references of WO8602104A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0735149A1 (fr) * | 1995-03-31 | 1996-10-02 | Ipsen Industries International Gesellschaft Mit Beschränkter Haftung | Dispositif pour le traitement thermique d'articles métalliques sous vide |
WO1998008988A1 (fr) * | 1996-08-30 | 1998-03-05 | Franz Hillingrathner | Four rotatif pour traitement de pieces |
Also Published As
Publication number | Publication date |
---|---|
SE450389B (sv) | 1987-06-22 |
SE8404926D0 (sv) | 1984-10-02 |
DE3567479D1 (en) | 1989-02-16 |
SE8404926L (sv) | 1986-04-03 |
EP0198871B1 (fr) | 1989-01-11 |
JPS62500529A (ja) | 1987-03-05 |
WO1986002104A1 (fr) | 1986-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0359756B1 (fr) | Systeme de four a chambres multiples, a foyer rotatif a usages multiples | |
EP0198871A1 (fr) | Procede et appareil de traitement thermique, de preference la cementation. | |
US4622006A (en) | Method and apparatus for heat treating metallic workpieces using a continuous-heating furnace or gravity-discharge furnace | |
US1949716A (en) | Method of and apparatus for heattreating | |
US5402994A (en) | Device for heat-treating metal workpieces | |
EP1589120B1 (fr) | Procede et four pour traitement thermique | |
US4412813A (en) | Rotary hearth furnace and method of loading and unloading the furnace | |
US5143558A (en) | Method of heat treating metal parts in an integrated continuous and batch furnace system | |
SU1487818A3 (ru) | Способ термической обработки металлических заготовок в печи и устройство для его осуществления | |
US20050161869A1 (en) | Installation for the heat-treatment of parts | |
JP3238149B2 (ja) | 熱処理プロセスにおいて部品をスケジュールするための制御装置及び方法 | |
ES8307921A1 (es) | Procedimiento para la cementacion de piezas metalicas. | |
EP1685355B1 (fr) | Installation pour le traitement thermique de pieces diverses | |
WO1986002103A1 (fr) | Procede et appareil de traitement thermique de pieces a usiner | |
US3850318A (en) | Multiple tray pusher furnace | |
EP0192933A3 (fr) | Procédé et dispositif de traitement thermique notamment de pièces métalliques | |
JPS63169478A (ja) | 高速焼成方法及びそれに用いられる窯 | |
ES480954A1 (es) | Metodo y su correspondiente horno para la coccion de articu-los de ceramica cilindricos. | |
US4888143A (en) | Fast tempo firing process for ceramic materials such as tiles | |
JPH0234716A (ja) | 熱処理装置 | |
JPS60208469A (ja) | 連続ガス浸炭炉 | |
JPS61217685A (ja) | 加工ラインの処理ステ−シヨンを通して別個の物品を取り扱いそして運ぶ方法 | |
DE3175310D1 (en) | Process and walking-beam furnace for the heating of products used in ferrous metallurgy | |
WO2003064949A1 (fr) | Four tunnel contrarotatif | |
US3649327A (en) | Endless furnace and the method of utilizing same for dry process, vitreous enameling |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
TCAT | At: translation of patent claims filed | ||
ITCL | It: translation for ep claims filed |
Representative=s name: BARZANO' E ZANARDO ROMA S.P.A. |
|
17P | Request for examination filed |
Effective date: 19860918 |
|
EL | Fr: translation of claims filed | ||
TCNL | Nl: translation of patent claims filed | ||
DET | De: translation of patent claims | ||
17Q | First examination report despatched |
Effective date: 19870814 |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO ROMA S.P.A. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
REF | Corresponds to: |
Ref document number: 39949 Country of ref document: AT Date of ref document: 19890115 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3567479 Country of ref document: DE Date of ref document: 19890216 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19890907 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19890930 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: MOEBIUS, HANS-EBERHARD DR.-ING. Effective date: 19891006 |
|
26 | Opposition filed |
Opponent name: CATERPILLAR INC. Effective date: 19891009 Opponent name: MOEBIUS, HANS-EBERHARD DR.-ING. Effective date: 19891006 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: MOEBIUS, HANS-EBERHARD DR.-ING. |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: CATERPILLAR INC. |
|
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19920909 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19920910 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19920914 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19920918 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19920928 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19920930 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19921005 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19921028 Year of fee payment: 8 |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
27W | Patent revoked |
Effective date: 19930314 |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 930314 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
NLR2 | Nl: decision of opposition | ||
EUG | Se: european patent has lapsed |
Ref document number: 85905124.5 Effective date: 19930512 |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |