DE2542083B1 - Transport container made of heat-resistant steel for articles to be hardened - Google Patents
Transport container made of heat-resistant steel for articles to be hardenedInfo
- Publication number
- DE2542083B1 DE2542083B1 DE19752542083 DE2542083A DE2542083B1 DE 2542083 B1 DE2542083 B1 DE 2542083B1 DE 19752542083 DE19752542083 DE 19752542083 DE 2542083 A DE2542083 A DE 2542083A DE 2542083 B1 DE2542083 B1 DE 2542083B1
- Authority
- DE
- Germany
- Prior art keywords
- transport container
- heat
- hardened
- resistant steel
- articles
- 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.)
- Ceased
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 6
- 239000010959 steel Substances 0.000 title claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D5/00—Supports, screens or the like for the charge within the furnace
- F27D5/005—Supports specially adapted for holding elongated articles in an upright position, e.g. sparking plugs
-
- 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
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- 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
- C23C8/04—Treatment of selected surface areas, e.g. using masks
-
- 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
- C23C8/22—Carburising of ferrous surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
Die Erfindung bezieht sich auf einen Transportbehälter aus hitzebeständigem Stahl für zu härtende Artikel.The invention relates to a transport container made of heat-resistant steel for articles to be hardened.
Bekanntlich werden zum Härten mit Kohlenstoff die zu härtenden Artikel, wie Getriebezahnräder, vor dem Härtereiofen auf einen Transportbehälter geladen und mit diesem in den Ofen geschoben und nach der Behandlung wieder aus dem Ofen gezogen. Diese Reihenfolge wird dann mit einer neuen Ladung wiederholt. Der Transportbehälter selbst ist hierzu aus hitzebeständigem Werkstoff hergestellt. Dennoch wird ein derartiger Transportbehälter nach ein- bis zweijährigem Einsatz durch Aufkohlung und damit eintretende Versprödung beschädigt und unbrauchbar.It is known that for hardening with carbon, the article to be hardened, such as gear wheels, before Hardening furnace loaded onto a transport container and pushed into the furnace with this and after the Treatment pulled out of the oven again. This sequence is then carried out with a new charge repeated. The transport container itself is made of a heat-resistant material for this purpose. Still will Such a transport container after one to two years of use due to carburization and thus occurring Embrittlement damaged and unusable.
Die dieser Erfindung zugrunde liegende Aufgabe wird darin gesehen, die Aufkohlung eines aus hitzebeständigem Stahl bestehenden Transportbehälters beim Härten zu vermeiden oder zumindest hinauszuzögern. Diese Aufgabe ist dadurch gelöst worden, daß der Transportbehälter zumindest teilweise mit einem Kupfermantel beschichtet ist. Auf diese Weise wird durch die aufgetragene K.upferschutzschicht mit Sicherheit die Versprödung aufgehalten, und nach mehrmonatigem Einsatz ist keine Versprödung der Oberfläche und kein Vordringen zum Kern sichtbar, so daß letztlich gesehen die Transportbehälter eine wesentlich längere Lebensdauer haben, als wenn sie nicht mit einem Kupfermantel beschichtet wären.The object underlying this invention is seen in the carburization of a heat-resistant To avoid steel existing transport container during hardening or at least to delay it. These The object has been achieved in that the transport container is at least partially covered with a copper jacket is coated. In this way, the applied copper protective layer is guaranteed to Embrittlement held up, and after several months of use there is no embrittlement of the surface and no Penetration to the core is visible, so that ultimately the transport container has a significantly longer service life as if they weren't coated with a copper jacket.
In der Zeichnung ist ein nachfolgend näher beschriebener Transportbehälter aus hitzebeständigem Stahl dargestellt.The drawing shows a transport container made of heat-resistant steel, which is described in more detail below shown.
Im einzelnen ist der Transportbehälter mit 10 bezeichnet und mit einer im wesentlichen quadratisch ausgebildeten Basis 12 versehen. Diese nimmt ein unteres Tablett 14 auf, das ebenfalls quadratisch ausgebildet ist und vier Pfosten 16 hat, die sich nach oben von den Ecken aus erstrecken. Diese Pfosten 16 wiederum nehmen ein oberes Tablett 18 auf. Der Transportbehälter 10 selbst läuft auf einer Bahn 20, die aus Rollen 22 besteht. Diese sind nebeneinander quer zur Bahn angeordnet und führen in den nicht dargestellten Härtereiofen.In detail, the transport container is denoted by 10 and a substantially square formed base 12 is provided. This takes a lower tray 14, which is also square is formed and has four posts 16 extending upwardly from the corners. These posts 16 in turn take an upper tray 18 on. The transport container 10 itself runs on a track 20 which consists of rollers 22. These are next to each other across arranged to the web and lead into the hardening furnace, not shown.
Wie ferner aus der Zeichnung hervorgeht, besteht die Basis 12 aus vier Seitenstreben 24, die das Quadrat der Basis 12 bilden, jedoch an ihren Ecken 26 abgewinkelt sind. Jede Ecke ist ferner mit einer hochstehenden Zylinderbuchse 28 versehen. Die Basis 12 weist des weiteren Gitterstreben 30 auf, die am Kreuzpunkt einer jeden Strebe ein Ringlager 32 haben.As can also be seen from the drawing, the base 12 consists of four side struts 24 which form the square of the Form base 12, but are angled at their corners 26. Each corner is also with a raised one Cylinder liner 28 is provided. The base 12 has the further lattice struts 30, which at the intersection of a each strut have a ring bearing 32.
In ähnlicher Weise besteht das untere Tablett 14 ebenfalls aus vier Seitenstreben 34, vier Zy'.indereckbuchsen 36 und Gitterstreben 38 mit Ringlagern 40, die den Streben 24, den Zylinderbuchsen 28, den Gitterstreben 30 und den Ringlagern 32 der Basis 12 entsprechen, jede der Seitenstreben 34 ist mit Anschlägen 42 versehen die sich nach unten erstrecken und gegen Gitterstreben der Basis 12 anliegen, um zu verhindern, daß das untere Tablett 14 gegenüber der Basis 12 verschoben werden kann.Similarly, the lower tray 14 also consists of four side struts 34, four Zy'.indereckbuchsen 36 and lattice struts 38 with ring bearings 40, the struts 24, the cylinder sleeves 28, the lattice struts 30 and the ring bearings 32 of the base 12, each of the side struts 34 is provided with stops 42 provided that extend downwards and rest against the grid struts of the base 12 to prevent that the lower tray 14 can be moved relative to the base 12.
leder Pfosten 16 besteht unter anderem aus einer Kernstange "44 und zwei Distanzhülsen 46. Die Kernstange 44 ist kreuzförmig im Querschnitt mit Ausnahme des Bodenteils, der mit Gewinde versehen ist um in die zugehörige Zylindereckbuchse 36 eingeschraubt werden zu können. Dieser Teil ist des weiteren mit radial sich nach außen erstreckenden Anschlägen 48 ausgerüstet, die gegen die obere Oberfläche der Ringlager anliegen. Die Distanzhülsen 46 sind derart angeordnet, daß eine über der anderen auf der Kernstange 44 aufsitzt, wobei die untere Distanzhülse auf der Oberfläche der Anschläge 48 gelagert ist. .leather post 16 consists, among other things, of a core rod "44" and two spacer sleeves 46. The Core rod 44 is cruciform in cross section with the exception of the bottom portion which is threaded is to be screwed into the associated cylinder corner socket 36 can. This part is the further equipped with radially outwardly extending stops 48, which against the upper The surface of the ring bearing. The spacer sleeves 46 are arranged so that one on top of the other rests on the core rod 44, the lower spacer sleeve on the surface of the stops 48 is stored. .
Das obere Tablett 18 ist ähnlich wie das untere Tablett 14 ausgebildet. Es hat somit auch vier Seilenstreben 50, vier Zylindereckbuchsen 52 und Gittersireben 54 mit Ringlagern 56, die den Seitenstreben 34, den Zylindereckbuchsen 36, den Gitterstreben 38 und den Ringlagern 40 des unteren Tabletts 14 entsprechen. Die Zylindereckbuchsen 52 sind von den Kernstangen 44 derart aufgenommen, daß sie auf der Oberfläche der entsprechenden oberen Distanzhülsen 46 liegen.The upper tray 18 is designed similarly to the lower tray 14. It also has four Cable struts 50, four cylinder corner sockets 52 and lattice sirebs 54 with ring bearings 56 that support the side struts 34, the cylinder corner sockets 36, the lattice struts 38 and the ring bearings 40 of the lower tray 14 correspond. The cylinder corner sockets 52 are received by the core rods 44 so that they are on the Surface of the corresponding upper spacer sleeves 46 lie.
Sämtliche Teile des Transportbehälters bestehen aus hitzebeständigem Stahl mit 18% Cr und 36% Ni mit einem kleinen Anteil von Nb und sind mit einem Kupfermantel beschichtet, der eine Dicke von etwa 25 μπι aufweist. Lediglich die Basis 12 braucht mit einem Kupfermantel nicht besciiichtet zu werden, da es möglich ist, daß die Beschichtung während deTransportes im Ofeninneren abgenützt wird, jedoch nur bei Durchlauf- und Kammerofen.All parts of the transport container are made of heat-resistant steel with 18% Cr and 36% Ni a small amount of Nb and are coated with a copper jacket that is about Has 25 μπι. Only the base 12 needs with one Copper jacket not to be coated, as it is possible that the coating during transport inside the furnace is worn out, but only in continuous and chamber furnaces.
Die Getriebeteile werden auf den Transportbehälter 10 geladen, nachdem dessen oberes Tablett 18 entfernt wurde, so daß sie auf eine Spindel od. dgl. gesteckt in die Ringlager 40 des unteren Tabletts 14 eingeführt werden können Das obere Tablett 18 wird dann auf die oberen Distanzhülsen 46 gelegt, wobei der obere Endteil einer jeden Spindel in das zugehörige Ringlagci 56 des oberen Tabletts 18 eingreift. Die Getriebeteile 58 sind dann zwischen den oberen und unteren Tabletts 14 und 18 verspannt.The gear parts are loaded onto the transport container 10 after its upper tray 18 has been removed so that they od on a spindle. Like. Inserted into the ring bearing 40 of the lower tray 14 The upper tray 18 is then placed on the upper spacer sleeves 46, the upper end portion of which is a each spindle engages in the associated ring lag 56 of the upper tray 18. The gear parts 58 are then clamped between the upper and lower trays 14 and 18.
Der beladene Transportbehälter 10 wird dann über die Bahn 20 in den Härtereiofen geschoben, der bei einer Temperatur von vorzugsweise 900°C arbeitet und pro Stunde mit 600 Litern Propangas sowie mit 45 m3 eines Gases beschickt wird, das hauptsächlich aus 23% CO, 30%H2,46,3% N2,O,2% CO2 und 0,5% H2O besteht.The loaded transport container 10 is then pushed over the track 20 into the hardening furnace, which works at a temperature of preferably 900 ° C and is charged with 600 liters of propane gas and 45 m 3 of a gas that mainly consists of 23% CO, 30 per hour % H2, 46.3% N2, O, 2% CO2 and 0.5% H2O.
Die Behandlungsdauer hängt von den zu behandelnden Getriebeteilen 58 ab und kann beispielsweise 12 Stunden betragen, nach denen dann somit der Transportbehälter wieder aus dem Ofen gezogen wird und die Getriebeteile 58 abgeladen werden können. Danach kann eine neue Behandlung erfolgen.The treatment duration depends on the transmission parts 58 to be treated and can, for example 12 hours, after which the transport container is then pulled out of the oven again and the gear parts 58 can be unloaded. Thereafter, a new treatment can take place.
Die Kupferbeschichtung ermöglicht somit, daß die Versprödung zumindest verzögert wird, so daß die einzelnen Komponenten des Transportbehälters nicht so häufig ersetzt werden müssen, wie das bei herkömmlichen nicht beschichteten TransportbehälternThe copper coating thus enables the embrittlement to be at least delayed, so that the individual components of the transport container do not have to be replaced as often as with conventional uncoated shipping containers
der Fall ist. Die Beschichtung kann 20 bis 30 μπι stark sein.the case is. The coating can be 20 to 30 μm thick be.
Selbstverständlich kann dt-r Transportbehälter auch als in einen Schachtofen über einen Kran absenkbarer Korb ausgebildet sein.Of course, dt-r can also deliver transport containers be designed as a basket that can be lowered into a shaft furnace using a crane.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3185975A GB1550344A (en) | 1975-07-30 | 1975-07-30 | Method of carburizing an article on a support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2542083B1 true DE2542083B1 (en) | 1976-03-25 |
Family
ID=10329469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752542083 Ceased DE2542083B1 (en) | 1975-07-30 | 1975-09-20 | Transport container made of heat-resistant steel for articles to be hardened |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE844644A (en) |
| DE (1) | DE2542083B1 (en) |
| FR (1) | FR2319866A1 (en) |
| GB (1) | GB1550344A (en) |
| IT (1) | IT1066243B (en) |
| NL (1) | NL7608349A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0015373A1 (en) * | 1979-02-08 | 1980-09-17 | Rudolf Klefisch | Annealing box |
| EP0324183A1 (en) * | 1988-01-15 | 1989-07-19 | Societe Mancelle De Fonderie | One piece support with several levels for the thermal treatment of shafts or axles |
| DE29608569U1 (en) * | 1996-05-13 | 1996-08-14 | Karl Heess GmbH & Co Maschinenbau, 68623 Lampertheim | Device for receiving and implementing heat treatment steps to be subjected to workpieces |
| FR2772467A1 (en) * | 1997-12-15 | 1999-06-18 | Snecma | LOADING DEVICE FOR SUPPORTING PARTS TO BE HEAT TREATED IN AN OVEN |
| WO2003069689A3 (en) * | 2002-02-13 | 2004-03-11 | Epcos Ag | Ceramic multilayer component, method for the production thereof and retaining device |
| DE102017121830A1 (en) * | 2017-09-20 | 2019-03-21 | Ebner Industrieofenbau Gmbh | Portable support device for a furnace charge and handling system for the support device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322148C (en) * | 2004-12-16 | 2007-06-20 | 上海汽车股份有限公司 | Quenching for material rack by high pressure gas |
| FR3050812B1 (en) * | 2016-04-28 | 2019-11-29 | Arianegroup Sas | LOADING TOOLS WITH HIGH MODULARITY |
-
1975
- 1975-07-30 GB GB3185975A patent/GB1550344A/en not_active Expired
- 1975-09-20 DE DE19752542083 patent/DE2542083B1/en not_active Ceased
-
1976
- 1976-07-23 FR FR7622502A patent/FR2319866A1/en active Granted
- 1976-07-26 IT IT5061276A patent/IT1066243B/en active
- 1976-07-28 NL NL7608349A patent/NL7608349A/en unknown
- 1976-07-29 BE BE169343A patent/BE844644A/en unknown
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0015373A1 (en) * | 1979-02-08 | 1980-09-17 | Rudolf Klefisch | Annealing box |
| EP0324183A1 (en) * | 1988-01-15 | 1989-07-19 | Societe Mancelle De Fonderie | One piece support with several levels for the thermal treatment of shafts or axles |
| FR2626068A1 (en) * | 1988-01-15 | 1989-07-21 | Mancelle Fonderie | MONOBLOCK MOUNTING WITH STAGE PLATES FOR THERMAL TREATMENT OF TREES OR AXES |
| DE29608569U1 (en) * | 1996-05-13 | 1996-08-14 | Karl Heess GmbH & Co Maschinenbau, 68623 Lampertheim | Device for receiving and implementing heat treatment steps to be subjected to workpieces |
| FR2772467A1 (en) * | 1997-12-15 | 1999-06-18 | Snecma | LOADING DEVICE FOR SUPPORTING PARTS TO BE HEAT TREATED IN AN OVEN |
| WO1999031284A1 (en) * | 1997-12-15 | 1999-06-24 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation - Snecma | Loading device for supporting parts to be thermally treated in a furnace |
| RU2220394C2 (en) * | 1997-12-15 | 2003-12-27 | Сосьете Насьональ Д'Этюд Э Де Констрюксьон Де Мотер Д'Авиасьон - Снекма | Loading gear to hold parts subjected to thermal treatment in furnace |
| WO2003069689A3 (en) * | 2002-02-13 | 2004-03-11 | Epcos Ag | Ceramic multilayer component, method for the production thereof and retaining device |
| US7508112B2 (en) | 2002-02-13 | 2009-03-24 | Epcos Ag | Ceramic multilayer component, method for the production thereof and retaining device |
| US7781945B2 (en) | 2002-02-13 | 2010-08-24 | Epcos Ag | Ceramic multilayer component, method for the production thereof, and retaining device |
| EP2568246A3 (en) * | 2002-02-13 | 2013-12-25 | Epcos Ag | Retaining device for ceramic multilayer component |
| DE102017121830A1 (en) * | 2017-09-20 | 2019-03-21 | Ebner Industrieofenbau Gmbh | Portable support device for a furnace charge and handling system for the support device |
| US11807913B2 (en) | 2017-09-20 | 2023-11-07 | Ebner Industrieofenbau Gmbh | Portable carrier device for a furnace charge and handling system for the carrier device |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1066243B (en) | 1985-03-04 |
| FR2319866A1 (en) | 1977-02-25 |
| GB1550344A (en) | 1979-08-15 |
| FR2319866B1 (en) | 1980-05-23 |
| NL7608349A (en) | 1977-02-01 |
| BE844644A (en) | 1976-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BHV | Refusal |