EP2371983A1 - Procédé d'amélioration d'un composant en fonte ainsi que composant en fonte fabriqué selon le procédé - Google Patents

Procédé d'amélioration d'un composant en fonte ainsi que composant en fonte fabriqué selon le procédé Download PDF

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Publication number
EP2371983A1
EP2371983A1 EP10157739A EP10157739A EP2371983A1 EP 2371983 A1 EP2371983 A1 EP 2371983A1 EP 10157739 A EP10157739 A EP 10157739A EP 10157739 A EP10157739 A EP 10157739A EP 2371983 A1 EP2371983 A1 EP 2371983A1
Authority
EP
European Patent Office
Prior art keywords
wall
heat treatment
cast component
inductor
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.)
Withdrawn
Application number
EP10157739A
Other languages
German (de)
English (en)
Inventor
Stefan Dassler
Sebastien Nisslé
Ignaz Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Georg Fischer Verwaltungs-GmbH
Original Assignee
Georg Fischer Verwaltungs-GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Georg Fischer Verwaltungs-GmbH filed Critical Georg Fischer Verwaltungs-GmbH
Priority to EP10157739A priority Critical patent/EP2371983A1/fr
Publication of EP2371983A1 publication Critical patent/EP2371983A1/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Definitions

  • the invention relates to a method for the tempering of a cast component having at least one wall, in particular of light metal, preferably cast aluminum component or aluminum alloy casting component, wherein the cast component is heat-treated at least locally after casting.
  • the invention is therefore based on the object to improve a quenching of cast components by heat treatment.
  • the heat treatment is carried out inductively by means of at least one, at least a portion of the wall oppositely disposed inductor.
  • a powered with electric current inductor allows a very targeted and precise heat treatment in With respect to the setting and keeping constant or desired wandering of the heat treatment temperature, wherein in the case of local heat treatment areas a very sharp demarcation to adjacent, not heat treated areas due to the inductor and the associated inductive heat treatment is feasible.
  • the temperature control can be controlled very precisely by adjusting the electrical current of the inductor, as is not possible with the known gas burners.
  • the inductor can be assigned to the heat-treated wall of the cast component precisely precise location, which positioning can be done not only from the outside, but also inside a cast component, if the cast component has, for example, cavities or the like.
  • the operation of the inductor with electric current creates an electromagnetic field that results in eddy currents within the wall of the cast component, thereby causing component heating.
  • the inductor generates an electromagnetic field whose field lines are perpendicular or approximately perpendicular to the wall to be heated or the region of the wall to be heated.
  • an electrical current flowing through the at least one inductor Current is controlled or regulated according to the desired intensity of the heat treatment.
  • a further development of the invention provides that at least one region of the cast component which is not subjected to the heat treatment is cooled at least during the heat treatment.
  • the often good heat conduction in the cast component, in particular in the aluminum cast component or aluminum alloy cast component leads to an increase in temperature in component areas, which is not always desirable. To prevent unwanted heating, cooling takes place in the corresponding area of the cast component.
  • the wall has a front side and a rear side and that at least a region of the front side is inductively heated at least with the said first inductor and that at least one region of the rear side at least with a further, second inductor is heated, wherein the areas are preferably approximately congruent or preferably congruent. Due to this measure, the wall is thus inductively heated from the front and the back for heat treatment, the advantages of inductively operating, electrically powered inductors - as they were already mentioned above - both at the front and on the back of the cast component occur. Due to the bilateral heating, this can be done faster and more homogeneous.
  • the two inductors work congruently, so heat-treat equal and congruent areas of the wall of the workpiece, or offset from each other lie so that different areas are heated and only a certain proportion of the areas is congruent. It can also be provided in particular that the two areas do not coincide, ie that the front side of the wall of the cast component with the first inductor and that the rear side of the cast component are heated with the second inductor for heat treatment and these areas are not congruent
  • special heat trajectories are achieved with correspondingly desired parameter settings.
  • the heat-treated wall or the heat-treating region of the wall is quenched after the heat treatment.
  • the material parameters can be influenced in the desired manner.
  • the mentioned quenching is preferably carried out by means of at least one gaseous and / or liquid medium.
  • the quenching / cooling takes place by means of at least one medium flow.
  • quenching takes place by means of gas stream cooling, in particular airflow cooling and / or nitrogen stream cooling.
  • the quenching takes place by water shower cooling and / or Wasserbadkühlung.
  • a preferred embodiment of the invention provides that the heat treatment is carried out in one or two stages.
  • the one-stage heat treatment as solution annealing in particular with temperatures or a temperature in the range of 350 ° C to 550 ° C, or as hot aging, in particular with temperatures or a temperature in the range of 100 ° C to 350 ° C, is performed.
  • the two-stage heat treatment is carried out as first solution heat treatment and then successful aging.
  • the components are therefore first solution-annealed and then warm-outs.
  • the temperature parameters to be set may also, as mentioned above, be from 350 ° C to 550 ° C for solution heat treatment and from 100 ° C to 350 ° C for hot aging.
  • the solution annealing covers only the wall, only the area of the wall or the entire cast component and / or that the thermal aging covers only the wall, only the area of the wall or the entire cast component. Accordingly, by appropriate Kombinatorik the various, above Possibility of an optimal tempering of the cast component can be performed.
  • a development of the invention provides that, in addition to the inductive heat treatment, a furnace heat treatment is carried out.
  • a furnace heat treatment is carried out.
  • the entire cast component is solution-annealed in a heating furnace and then at least one of the walls or an area thereof is induction-hardened, in particular heat-cured, or at least solution-annealed at least one wall or a portion thereof and then the entire component is heated in the heating furnace is outsourced.
  • This procedure corresponds to a multi-stage heat treatment and leads to optimum material properties of the cast component.
  • the wall is a first wall which adjoins at least one second, in particular cooled wall, wherein the heat treatment is carried out in particular only on the first wall.
  • These walls may in particular be angled adjoining walls of the cast component.
  • the wall has a wall thickness of up to 6 mm, in particular in the case of a die cast component, or that the wall has a wall thickness of up to 30 mm, in particular in the case of a sand cast component or chill casting component.
  • For the heat treatment is - according to an embodiment of the invention - provided that it is carried out over a period of 5 to 60 minutes, in particular about 10 minutes. This is especially true for solution heat treatment.
  • aging it is preferable that it be performed over a period of more than 10 minutes.
  • the invention relates to a cast component, which is produced by the aforementioned method.
  • the FIG. 1 shows a casting 1, which has a breakthrough 2.
  • the casting 1 is associated with an inductor 3, such that it faces the casting 1 with a small distance.
  • the inductor 3 has an induction coil through which an electric current flows.
  • an electromagnetic field is generated whose field lines impinge on the casting 1 and thereby heat the casting 1, in particular its wall 4. Since the electric current of the inductor 3 by means of a not shown Control or regulating device can be specified very accurately, the temperature and the time of heating can be met exactly. In particular, it is possible to heat the casting 1 only locally, if desired.
  • a cooling nozzle 5 is used to cool the casting 1, ie it is quenched. As a quenching medium, water is used.
  • the sprays of the water are indicated by the reference numeral 6.
  • the quenching / cooling of the casting 1 is also done very precisely by the temperature of the cooling medium, the amount of cooling medium used and the time of cooling are accurately controlled or regulated.
  • the FIG. 2 shows a casting 1, which is designed trough-shaped.
  • a wall 4 of the casting 1 two inductors 3 are assigned, wherein the one inductor 3 of the front side 7 and facing the inductor 3 of the back 8 of the wall 4.
  • the inductive heat treatment of the casting 1 which is also carried out only locally, for example, as a bottom wall 9 is not subjected to heat treatment.
  • Another wall 10 of the casting 1 is - as described above - heat treated according to two inductors 3. It can be provided that, during the heat treatment of the walls 4 and 10, the bottom wall 9 is cooled by appropriate means, for example by cooling the bottom wall 9 with a medium flow, for example an air flow.
  • the FIG. 3 shows a casting 1, which is formed as a trough, and consists for example of aluminum alloy. It has side walls 11, 12, 13 and 14 and a bottom wall 15.
  • the wall thickness of the side walls 11 to 14 is 3 mm.
  • On the outer sides of the side walls 11 to 14 are integrally molded ribs 16 having a rib height of 10 mm.
  • the wall thickness of the side walls 13 and 14 is also 3 mm; they are formed rib-free.
  • the side walls 11 and 12 are heated to 450 ° C, this heat treatment is carried out with a holding period of 10 minutes. Subsequently, an air cooling takes place.
  • the side walls 13 and 14 are cooled by a cooling method, for example, air cooling, they should not experience direct heating.
  • the 1 FIG. 3 After the heat treatment, it is possible to cast the 1 FIG. 3 to be fed to a hot aging, with temperatures in the range of 100 ° C to 350 ° C are used. Hot aging takes place over a period of more than 10 minutes.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP10157739A 2010-03-25 2010-03-25 Procédé d'amélioration d'un composant en fonte ainsi que composant en fonte fabriqué selon le procédé Withdrawn EP2371983A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10157739A EP2371983A1 (fr) 2010-03-25 2010-03-25 Procédé d'amélioration d'un composant en fonte ainsi que composant en fonte fabriqué selon le procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10157739A EP2371983A1 (fr) 2010-03-25 2010-03-25 Procédé d'amélioration d'un composant en fonte ainsi que composant en fonte fabriqué selon le procédé

Publications (1)

Publication Number Publication Date
EP2371983A1 true EP2371983A1 (fr) 2011-10-05

Family

ID=42237115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10157739A Withdrawn EP2371983A1 (fr) 2010-03-25 2010-03-25 Procédé d'amélioration d'un composant en fonte ainsi que composant en fonte fabriqué selon le procédé

Country Status (1)

Country Link
EP (1) EP2371983A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012010471A1 (de) 2012-05-26 2012-12-06 Daimler Ag Verfahren zur Herstellung eines Leichtmetallbauteils
DE102015223960A1 (de) * 2015-12-02 2017-06-08 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines Gussbauteils
DE102021213101A1 (de) 2021-11-22 2023-05-25 Volkswagen Aktiengesellschaft Verfahren zur Wärmebehandlung eines Aluminiumbauteils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020540A1 (fr) * 1999-01-16 2000-07-19 Bayerische Motoren Werke Aktiengesellschaft Procédé de fabrication de pièces coulées en alliage d'aluminium
WO2004101981A1 (fr) * 2003-05-17 2004-11-25 Daimlerchrysler Ag Procede de trempe et revenu de culasses, et culasses pour moteurs a combustion interne
EP1820871A1 (fr) * 2006-02-15 2007-08-22 Bayerische Motorenwerke Aktiengesellschaft Procédé et dispositif de durcissement par précipitation de métaux légers hautement alliés, par induction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020540A1 (fr) * 1999-01-16 2000-07-19 Bayerische Motoren Werke Aktiengesellschaft Procédé de fabrication de pièces coulées en alliage d'aluminium
WO2004101981A1 (fr) * 2003-05-17 2004-11-25 Daimlerchrysler Ag Procede de trempe et revenu de culasses, et culasses pour moteurs a combustion interne
EP1820871A1 (fr) * 2006-02-15 2007-08-22 Bayerische Motorenwerke Aktiengesellschaft Procédé et dispositif de durcissement par précipitation de métaux légers hautement alliés, par induction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012010471A1 (de) 2012-05-26 2012-12-06 Daimler Ag Verfahren zur Herstellung eines Leichtmetallbauteils
DE102015223960A1 (de) * 2015-12-02 2017-06-08 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines Gussbauteils
DE102021213101A1 (de) 2021-11-22 2023-05-25 Volkswagen Aktiengesellschaft Verfahren zur Wärmebehandlung eines Aluminiumbauteils

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