[go: up one dir, main page]

WO2025236023A1 - Procédé de production d'une pièce coulée métallique - Google Patents

Procédé de production d'une pièce coulée métallique

Info

Publication number
WO2025236023A1
WO2025236023A1 PCT/AT2025/060196 AT2025060196W WO2025236023A1 WO 2025236023 A1 WO2025236023 A1 WO 2025236023A1 AT 2025060196 W AT2025060196 W AT 2025060196W WO 2025236023 A1 WO2025236023 A1 WO 2025236023A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
blank
cooling
quenched
area
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.)
Pending
Application number
PCT/AT2025/060196
Other languages
German (de)
English (en)
Inventor
Robert Ebner
Ulrich PSCHEBEZIN
Manoj Kumar
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.)
Ebner Industrieofenbau GmbH
Original Assignee
Ebner Industrieofenbau 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 Ebner Industrieofenbau GmbH filed Critical Ebner Industrieofenbau GmbH
Publication of WO2025236023A1 publication Critical patent/WO2025236023A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • 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
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • 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
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F27D2009/0072—Cooling of charges therein the cooling medium being a gas
    • F27D2009/0075—Cooling of charges therein the cooling medium being a gas in direct contact with the charge

Definitions

  • the invention relates to a method for producing a shaped part from a blank made of a metallic material, in particular a shaped part made of an aluminum alloy, comprising the steps of: heating the blank to a first temperature which is at least the solution annealing temperature of the metallic material; quenching the blank or a region or several regions of the blank to a second temperature to prevent recrystallization of the microstructure of the metallic material formed at the first temperature; shaping the blank at a third temperature which is lower than the first temperature and higher than the second temperature; cooling or quenching the shaped blank.
  • the invention further relates to a system for carrying out the method according to the invention, comprising a first device for heating a blank made of a metallic material, in particular an aluminum alloy, to the first temperature, a first cooling device for at least partially quenching the blank to the second temperature, a second device for heating the blank to the third temperature, a device for forming a shaped part from the blank and a second cooling device for cooling the shaped part.
  • crash-relevant components play a significant role. These components allow for weight reduction, which in turn improves environmental aspects. To achieve this, the components have relatively high strength in defined sections, while simultaneously allowing deformation in other sections to dissipate energy in the event of an accident.
  • DE 102012 007 213 Al describes a process for manufacturing an aluminum forming part, comprising the following process steps: heating an aluminum blank to be formed, in particular an aluminum sheet, to solution annealing temperature; alternatively, forming and simultaneously quenching the heated aluminum blank in a cooled forming tool; or quenching the heated aluminum blank, applying a lubricant, and forming the aluminum blank in a forming tool in a cold state.
  • WO 2008/059242 A2 describes a method for forming a metal alloy sheet component, comprising: heating a metal alloy sheet blank to its solution annealing temperature and maintaining this temperature until the solution annealing treatment is completed, rapidly transferring the sheet blank to a set of cold dies so that the heat loss of the sheet blank is minimized, immediately closing the cold dies to form the sheet blank into a formed component, and holding the formed component in the closed dies during cooling of the formed component, wherein the metal alloy is selected to be aluminum, magnesium, titanium, and nickel.
  • a method for forming an AA6082 Al alloy ingot or an Al alloy ingot of the 7xxx series (2) comprising the steps of: heating the ingot to a solution temperature (SHT) for the alloy of the ingot at a heating station and holding the ingot at this SHT temperature until the SHT is complete; cooling the ingot at a cooling station to an intermediate temperature (TITM) at a cooling rate high enough to prevent recrystallization in the alloy of the ingot, wherein for an AA6082 Al alloy ingot the intermediate temperature is 300–350 °C and the cooling rate is at least 30 K/s, and for an Al alloy ingot of the 7xxx series the intermediate temperature is 400–420 °C and the cooling rate is at least 50 K/s; forming the ingot in a forming tool; and quenching the formed ingot.
  • SHT solution temperature
  • TITM intermediate temperature
  • pre-aging of the formed and quenched blank includes heating to an aging temperature (TA), holding at the aging temperature for a specified period of time and cooling to room temperature.
  • TA aging temperature
  • US 11,441,216 B2 describes a method for forming a part from a sheet of aluminum alloy 6XXX or 7XXX, wherein the method comprises the following successive steps: a) heating the sheet to a temperature at which solution annealing of the alloy occurs, such that solution annealing is achieved; b) Measuring the temperature of the sheet at one or more positions on the sheet and controlling the cooling rate of the sheet based on the measured temperature at the one or more positions, wherein the cooling rate is controlled to be at or above the critical cooling rate of the alloy and at least at or above the rate at which microstructural precipitates in the alloy are avoided, until a target temperature is reached, wherein at least a first region of the sheet is selectively cooled to a first temperature lower than a second temperature to which at least a second region of the sheet is cooled, wherein the target temperature is 50 °C to less than 450 °C, and wherein the cooling of the sheet takes place in a cooling station, and the cooling station is part of a device arranged
  • a process known in the art for manufacturing crash-relevant steel components is called tailored tempering. This process is used to produce components with precisely defined zones of varying strength or ductility, for example, for the B-pillar of a passenger car.
  • this process is difficult to apply to light metal alloys due to their higher thermal conductivity, as the temperature differences between the differently cooled parts of the component equalize more quickly.
  • aluminum alloys such processes are described in US 9,677,161 B2, US 2022/0299267 Al, EP 2 193 214 Bl, US 2017/0247774 Al, WO 2011/130180 Al, and US 2018/0251877 AL.
  • the object of the invention is to develop a heat treatment process for the production of crash-relevant molded parts, in order to make it easier to integrate such molded parts into lightweight construction.
  • the object of the invention is achieved by the aforementioned method, according to which the blank or the area or areas of the blank that are to be quenched is or are quenched to a second temperature of 100 °C or below and is or are then heated to a third temperature before shaping.
  • the object of the invention is solved with the aforementioned system, in which the first cooling device is designed to quench at least one area of the blank to a temperature of 100 °C or less than 100 °C within a time span of 1 second to 300 seconds.
  • a key advantage is that cooling to 100 °C or below improves process stability and reproducibility. Heating the blank to the third temperature allows for a more homogeneous temperature distribution in at least one quenched area, thus improving the blank's formability and the part's accuracy. Furthermore, this can also improve the mechanical properties of the part, such as its strength in at least one area. Quenching creates and "freezes" stresses within the part. These can be reduced or eliminated by reheating to the third temperature through the chosen process parameters. Reheating the quenched area also allows for an improvement in the microstructure by optimizing the size and size distribution of clusters and zones. This improves the blank's formability and, after aging, the component's strength. Therefore, the blank's formability can be enhanced.
  • the process according to the invention allows the size and size distribution of the hardening precipitates, which increase the strength of the formed part, to be modified and improved in blanks, particularly those made of AA6XXX series aluminum alloys. This also applies to subsequent heat treatments, such as coating with baked enamels.
  • the sequence of process steps according to the invention enables the Production of blanks or molded parts with an improved combination of properties such as formability, strength, toughness and corrosion resistance.
  • one embodiment of the invention provides that the quenching of the blank to the second temperature is carried out at least in the temperature range between the solution annealing temperature and less than or equal to 150 °C with a cooling rate between 1 K/s and 300 K/s. This quenching also enables an improvement in strength after artificial aging (for example, with tempers T6 or T8X).
  • At least the area of the blank quenched from the first temperature to the second temperature is heated to a temperature between 150 °C and 350 °C as a third temperature.
  • the areas of the blank that are not quenched to the second temperature are cooled at a lower cooling rate compared to the quenching rate, in order to achieve a higher toughness of the material in these areas and to save energy in the process, since this area does not have to be heated to the third temperature or does so with less thermal energy.
  • one embodiment of the invention provides that the area or areas to be quenched to the second temperature are quenched with a contact cooler.
  • the first cooling device of the system is to be equipped with a contact cooler for this purpose.
  • a contact cooler can be used according to one embodiment, which at least in the area of the contact surface has a material with a thermal conductivity at 0 °C of 25 W/(m K) to 386 W/(m K).
  • a contact cooler can be used according to one embodiment, which at least in the area of the contact surface has a material with a thermal conductivity at 0 °C of 25 W/(m K) to 386 W/(m K).
  • the cooling of the remaining area of the blank is only carried out up to the third temperature in order to improve the energy balance.
  • heating to the third temperature can be carried out using hot air.
  • This type of heating minimizes the deformation of the blank by reducing residual stresses, particularly when the hot air stream is directed perpendicularly onto the surface of the blank. Furthermore, this method can smooth the surface of the blank.
  • a further embodiment provides for simultaneous quenching of the blank during its forming.
  • the second cooling unit of the system can be formed by the device used to shape the molded part.
  • a further embodiment of the plant may provide that the first device for heating the blank and/or the second device for heating the blank is a roller hearth furnace and/or that the first device for heating the blank, the first cooling device and the second device for heating the blank are arranged one after the other and designed as continuous devices.
  • Fig. 1 shows a process flow in the form of a flowchart
  • Fig. 2 shows a molded part produced using the method
  • Fig. 3 shows a system for carrying out the procedure according to Fig. 1;
  • Fig. 4 shows a time-temperature diagram of the process according to Fig. 1 in comparison with prior art processes
  • Fig. 5 shows a time-temperature diagram according to one embodiment of the method according to the invention.
  • Figure 1 shows a flowchart for an embodiment of a method for manufacturing a molded part 1 (see Figure 2) from a blank 2 made of a metallic material.
  • the material is preferably a heat-treatable aluminum alloy, particularly preferably an aluminum alloy of the AA6XXX and AA7XXX series.
  • the material can also be another light metal alloy, such as an aluminum alloy of the AA2xxx series, or another metallic alloy, such as heat-treatable magnesium alloys.
  • the procedure includes at least the following steps:
  • Step A Heating the blank 2 to a first temperature that is at least the solution annealing temperature of the metallic material.
  • Step B Quenching at least one area 3 of the blank 2 to a second temperature of 100 °C or below to avoid recrystallization of the microstructure of the metallic material formed at the first temperature.
  • Step C Heat at least the quenched area 3 of the blank 2 to a third temperature that is lower than the first temperature and higher than the second temperature.
  • Step D Shaping of the blank 2 at the third temperature.
  • Step E Quenching the blank formed into part 1.
  • steps D and E can be carried out simultaneously in a forming tool.
  • steps E are carried out in the forming tool, but not simultaneously, rather sequentially, with step E following directly after step D.
  • steps A to E are also carried out immediately one after the other.
  • the blank 2 can be a metal strip, a metal plate or, taking into account the molded part 1 to be produced, already pre-assembled, whereby even in this state the blank 2 is preferably designed to be flat.
  • the molded part 1 shown in Fig. 2 serves only to illustrate the invention.
  • the depicted shape has no limiting effect on the invention.
  • Figure 3 shows a variant embodiment of system 4, which serves to explain the process in more detail, i.e., process steps A to E.
  • step A the blank 2 is heated in a first device 5 for heating the blank 2 of plant 4 (hereinafter referred to simply as device 5) to at least a first temperature.
  • the first temperature is the solution annealing temperature.
  • the blank 2 can also be heated to a first temperature higher than the solution annealing temperature. In this case, this first temperature is at least 3 °C to 5 °C lower than the solidus temperature of the material.
  • the blank 2 can be heated to a first temperature selected from a range of 450 °C to 610 °C.
  • the solution annealing temperature is the temperature at which alloying elements dissolve in the alloy's solid solution during solution annealing at high temperature. For aluminum and aluminum alloys, this temperature ranges from 450°C to 590°C. Generally, the solution annealing temperature can also be between 465°C and 560°C.
  • the heating of the blank 2 to the first temperature preferably takes place in a continuously operating first device 5, in particular a continuous furnace such as a tunnel furnace or, more preferably, a roller hearth furnace.
  • a discontinuously operating first device 5 can also be used, such as a hearth furnace, a bogie hearth furnace, a multi-chamber furnace, etc.
  • the transport of the blank 2 in a continuously operating device 5 or generally in the system 4 can be carried out, for example, on rollers (as shown in Fig. 3) or belts.
  • the blank 2 is moved through the device 5 at a constant speed from the inlet to the outlet.
  • the blank 2 can be heated to the first temperature in the device 5 within a time period between 0.1 minutes and 40 minutes. Preferably, the blank 2 is held at this first temperature for a time period between 0.1 minutes and 4 minutes.
  • the heating of the blank 2 can be carried out, for example, with gas. In the preferred embodiment, the heating of the blank 2 is carried out with electric heating elements.
  • step B the blank 2, heated to the first temperature, is quenched entirely, or area 3 (i.e., a section of the blank 2), or several areas 3 (i.e., multiple sections of the blank 2, hereinafter referred to simply as at least one area 3, which also includes the entire blank 2) of the blank 2, to a second temperature of 100 °C or less.
  • area 3 i.e., a section of the blank 2
  • areas 3 i.e., multiple sections of the blank 2, hereinafter referred to simply as at least one area 3, which also includes the entire blank 2 of the blank 2
  • the blank 2, or at least an area 3 of the blank 2 can be quenched to a temperature between 20 °C and 99 °C.
  • the cooling unit 6 can be an air cooler and/or a liquid cooler, in particular a water cooler.
  • the cooling unit 6 can, for example, have several nozzles or nozzle bars from which the cooling medium for quenching the blank 2 or at least one region 3 of the blank 2 emerges.
  • the cooling medium jet(s) is/are preferably directed directly onto the blank 2 or the at least one region 3. In one embodiment, it can also be provided, particularly if only at least one area 3 is to be quenched, that the blank 2 or at least one area 3 to be quenched is quenched with a contact cooler.
  • the cooling device 6 can therefore include at least one contact cooler 7 or a contact cooling element.
  • the contact cooler 7 can, for example, have a heat sink 8 on which a plurality of cooling elements 9 are arranged, which are adjustable relative to the heat sink 8.
  • the heat sink 8 can have receiving bores in which the cooling elements 9 are held in their rest position and from which they can be moved individually or in groups into their working position, in which they bear against the blank 2.
  • Other shapes or configurations of contact coolers 7 are also possible.
  • a contact cooler 7 may be used, which, at least in the area of the contact surface of the cooling elements 8 with the blank 2, has a material with a thermal conductivity at 0 °C selected from a range of 25 W/(m K) to 400 W/(m K), in particular from 50 W/(m K) to 386 W/(m K), preferably from 75 W/(m K) to 386 W/(m K).
  • at least the contact area of the cooling elements 8 or the entire cooling elements 8 may be made of steel, an aluminum alloy, copper, a copper alloy, a zinc alloy, e.g. ZnA14Cu3Mg0.3.
  • the quenching of the blank 2 or at least one area 3 can be carried out on one side (from above or from below) or on two sides (from above and from below).
  • the quenching of the blank 2, or at least one region 3, to the second temperature can be carried out at any suitable quenching rate that can "freeze" a microstructure formed in step A.
  • the cooling device 6 of the system 4 is designed to quench at least one region 3 of the blank 2 to a temperature of 100 °C or less than 100 °C within a time span of 1 second to 300 seconds, in particular from 2 seconds to 250 seconds, for example from 2 seconds to 200 seconds.
  • the quenching of the blank 2 or of at least one area 3 takes place at least in the temperature range between the solution annealing temperature and less than or equal to 250 °C, in particular less than or equal to 150 °C, with a Quenching rates between 1 K/s and 300 K/s, particularly between 1 K/s and 200 K/s.
  • a value of 1 K/s can be used, for example, for thicker metal layers with air cooling.
  • Such cooling rates are preferably used for heat-treatable aluminum alloys or other alloys, especially the aforementioned materials for the blank 2.
  • At least one area 3 of the blank 2 can also be cooled down to the second temperature at this quenching rate.
  • the area(s) of the blank 2 that are not quenched to the second temperature can be cooled at a lower cooling rate than the quenching rate.
  • the cooling rate can be selected from a range of 0.1 K/s to 50 K/s.
  • it can be provided that at least one area of the blank 2 is cooled without forced cooling, for example, by air cooling.
  • the blank 2 or at least one area 3 is heated to a third temperature in step C, either immediately or after a holding time selected from a range of 1 second to 300 seconds.
  • the system 4 includes a second device 10 for heating the blank 2 or at least one area 3 (hereinafter referred to as device 10).
  • device 10 can be device 5, meaning that the blank 2 is transferred back to device 5 after quenching and heated there to the third temperature.
  • device 10 has a separate device 10, so that the blank 2 can be processed in a continuous pass through system 4.
  • Device 10 can be designed identically to device 5, so that the descriptions of device 5 in this document are also applicable to device 10. Accordingly, the heating of the blank 2 to the third temperature preferably takes place in a continuously operating device 10, in particular a continuous furnace such as a tunnel furnace or, more preferably, a roller hearth furnace.
  • the blank 2 or at least one area 3 is preferably heated to a temperature between 150 °C and 350 °C as a third temperature.
  • the blank 2, or at least one area 3, can be heated to the third temperature in the device 10 within a time period of between 0.1 minutes and 10 minutes.
  • the blank 2 is held at or exposed to this third temperature for a time period of between 2 minutes and 5 minutes.
  • the blank 2 is shaped in step D, either immediately or after a holding time selected from a range of 1 second to 300 seconds.
  • the system 4 includes a device 11 for shaping the blank 2 or at least one area 3 (hereinafter referred to as device 11).
  • Device 11 is a forming device. Therefore, no primary forming from a melt takes place in device 11.
  • device 11 can be a deep-drawing device.
  • device 11 can also be another forming device, such as another tensile-compressive forming device or a pressure forming device, such as a drop forging machine, or a roll forming device, etc.
  • the device 11 can, for example, have a die 12 and a punch 13, as is known per se.
  • the formed blank 2 can also be subjected to a cutting operation in the device 11, such as a punching step, for which the device 11 can have corresponding cutting tools.
  • the cutting operation can also be carried out in a separate process step, if required.
  • step E the molded part 2 is then cooled.
  • the system 4 includes a second cooling device 14 (hereinafter referred to simply as cooling device 14).
  • cooling device 14 preferably takes place in the device 11 either simultaneously with the molding process or after it.
  • the device 11 can be equipped with at least one cooling element and/or with a corresponding heat sink.
  • step E can also be carried out independently of the device 11 in a separate cooling device 14 connected to the device 11.
  • the cooling of the molded part 1, i.e., the formed blank 2 can be carried out at a cooling rate selected from a range of 1 K/s to 50 K/s.
  • step E can also be performed as quenching the molded part 1.
  • the cooling device 14 can be designed like the cooling device 6, so reference is made to the preceding descriptions of the cooling device 6.
  • heating to the first temperature and/or the third temperature can be carried out using a hot air jet, wherein the air jet is blown onto the blank 2 at an angle between 50 ° and 130°, in particular between 80 ° and 100°, preferably at an angle of 90°.
  • the force generated by the air jet can minimize the deformation of the blank 2 by reducing the residual stress.
  • the device 5 and/or the device 10 can have one or more appropriately arranged air discharge elements 15 for this purpose. Instead of air, another gaseous fluid can also be used to heat the blank 2 in the device 5 and/or in the device 10.
  • the air blast or gas blast can be directed onto the surface of the blank 2 at a speed selected from a range of 15 m/s to 100 m/s, in particular from a range of 20 m/s to 80 m/s.
  • Figure 4 shows a comparison of the temperature profile of the method according to the invention with two methods known from the prior art. Time is plotted on the horizontal axis and temperature on the vertical axis.
  • Temperature profile 16 corresponds to a method according to the aforementioned US 11,441,216 B2, temperature profile 17 to a method according to WO 2019/068767 Al, and temperature profile 18 to a method according to the invention.
  • FIG. 5 illustrates a variant of this embodiment. Again, the Time is plotted on the horizontal axis and temperature on the vertical axis. At least one region 3 of the blank 2 is quenched according to the temperature profile 18 as described above. The temperature profile 19 shows the temperature profile for a remaining region 20 (see Fig. 3) of the blank 2 or the molded part 1 that is not quenched. Region 20 is cooled more slowly, preferably to the third temperature at which the blank 2 is shaped in step D. Cooling can be carried out at a rate between 1 K/s and 50 K/s.
  • At least one quenched area 3 can be heated to the third temperature at which the shaping takes place.
  • area 20 can be cooled to the second temperature of area 3 or a temperature between the third temperature and the second temperature, and then heated back to the third temperature using at least one area 3.
  • molded parts 1 can be produced which have areas 3, 20 with different mechanical properties, for example, higher strength in area 3 compared to area 20 and higher toughness in area 20 compared to area 3.
  • Annex 4 may be designed differently than described.
  • a blank 2 was produced from an AA7075 series aluminum alloy as a flat sheet. This blank 2 was subjected to the following temperature profile:
  • a blank was produced from an AA6016 series aluminum alloy as a flat sheet. This blank 2 was subjected to the following temperature profile:
  • identical molded parts 1 were produced from the two aluminium alloys according to the procedures of US 11,441,216 B2, and WO 2019/068767 Al.
  • blanks 2 which were heat-treated using a method according to the invention, allow deep drawing with a depth that is 54% to 125% greater than that of the prior art, without any cracking occurring.
  • the yield strength Rp0.2 could be improved by 17% to 20%.
  • the exemplary embodiments show and describe possible design variants, whereby it should be noted at this point that combinations of the individual design variants are also possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé de production d'une pièce coulée (1) à partir d'une ébauche (2) en matériau métallique, comprenant les étapes consistant à : chauffer l'ébauche (2) à une première température, qui est au moins la température de recuit de mise en solution du matériau métallique ; tremper au moins une région (3) de l'ébauche (2) à une deuxième température ; mettre en forme l'ébauche (2) à une troisième température, qui est inférieure à la première température et supérieure à la deuxième température ; refroidir ou tremper l'ébauche mise en forme (2). L'au moins une région (3) de l'ébauche (2) est ou sera trempée à une deuxième température inférieure ou égale à 100 °C puis chauffée à la troisième température avant la coulée.
PCT/AT2025/060196 2024-05-15 2025-05-14 Procédé de production d'une pièce coulée métallique Pending WO2025236023A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50403/2024 2024-05-15
ATA50403/2024A AT528005B1 (de) 2024-05-15 2024-05-15 Verfahren zum Herstellen eines metallischen Formteils

Publications (1)

Publication Number Publication Date
WO2025236023A1 true WO2025236023A1 (fr) 2025-11-20

Family

ID=96020066

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2025/060196 Pending WO2025236023A1 (fr) 2024-05-15 2025-05-14 Procédé de production d'une pièce coulée métallique

Country Status (2)

Country Link
AT (1) AT528005B1 (fr)
WO (1) WO2025236023A1 (fr)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008059242A2 (fr) 2006-11-14 2008-05-22 The University Of Birmingham Procédé pour former des composants de feuilles d'alliage métallique
JP2010194589A (ja) * 2009-02-26 2010-09-09 Furukawa-Sky Aluminum Corp 冷間プレス成形用アルミニウム合金板ブランクシートの部分的復元処理装置
JP2011111657A (ja) * 2009-11-27 2011-06-09 Furukawa-Sky Aluminum Corp 塗装焼付け硬化性を有する冷間プレス成形用アルミニウム合金板ブランクの製造方法、およびそのブランクを用いた冷間プレス成形方法および成形品
WO2011130180A1 (fr) 2010-04-12 2011-10-20 Alcoa Inc. Alliages d'aluminium lithium de série 2xxx à faible différentiel de résistance
DE102012007213A1 (de) 2012-04-11 2012-11-29 Daimler Ag Verfahren zur Herstellung eines Aluminiumformteils
JP2014025101A (ja) * 2012-07-25 2014-02-06 Uacj Corp アルミニウム合金製ブランクの製造方法及びアルミニウム合金製プレス成形体の製造方法
US9677161B2 (en) 2012-09-27 2017-06-13 Hydro Aluminium Rolled Products Gmbh Method and apparatus for thermally treating an aluminium workpiece and aluminium workpiece
US20170247774A1 (en) 2016-02-26 2017-08-31 GM Global Technology Operations LLC Continuous tailor heat-treated blanks
EP2193214B1 (fr) 2007-10-04 2018-01-10 Aleris Rolled Products Germany GmbH Procédé de fabrication d'un produit de plaque métallique moulé ayant un gradient dans les propriétés d'ingénierie
US20180251877A1 (en) 2017-03-01 2018-09-06 GM Global Technology Operations LLC High-strength aluminum stampings with tailored properties
WO2019068767A1 (fr) 2017-10-04 2019-04-11 Automation, Press And Tooling, Ap & T Ab Procédé et système pour former une ébauche d'alliage d'aluminium
US11441216B2 (en) 2014-03-14 2022-09-13 Imperial Innovations Limited Method of forming parts from sheet metal alloy
US20220299267A1 (en) 2016-10-17 2022-09-22 Novelis Inc. Metal sheet with tailored properties

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6224693B1 (en) * 1999-12-10 2001-05-01 Tenedora Nemak, S.A. De C.V. Method and apparatus for simplified production of heat treatable aluminum alloy castings with artificial self-aging
CA2398600A1 (fr) * 2000-12-14 2002-06-20 Tenedora Nemak, S.A. De C.V. Procede et appareil de fabrication simplifiee de pieces moulees en alliage d'aluminium aptes au traitement thermique a autovieillissement artificiel
DE102014111920B4 (de) * 2014-08-20 2017-04-13 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeugbauteils aus einer härtbaren Aluminiumlegierung
GB2590052B (en) * 2019-09-25 2021-12-08 Imp College Innovations Ltd Aluminium forming method

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008059242A2 (fr) 2006-11-14 2008-05-22 The University Of Birmingham Procédé pour former des composants de feuilles d'alliage métallique
EP2193214B1 (fr) 2007-10-04 2018-01-10 Aleris Rolled Products Germany GmbH Procédé de fabrication d'un produit de plaque métallique moulé ayant un gradient dans les propriétés d'ingénierie
JP2010194589A (ja) * 2009-02-26 2010-09-09 Furukawa-Sky Aluminum Corp 冷間プレス成形用アルミニウム合金板ブランクシートの部分的復元処理装置
JP2011111657A (ja) * 2009-11-27 2011-06-09 Furukawa-Sky Aluminum Corp 塗装焼付け硬化性を有する冷間プレス成形用アルミニウム合金板ブランクの製造方法、およびそのブランクを用いた冷間プレス成形方法および成形品
WO2011130180A1 (fr) 2010-04-12 2011-10-20 Alcoa Inc. Alliages d'aluminium lithium de série 2xxx à faible différentiel de résistance
DE102012007213A1 (de) 2012-04-11 2012-11-29 Daimler Ag Verfahren zur Herstellung eines Aluminiumformteils
JP2014025101A (ja) * 2012-07-25 2014-02-06 Uacj Corp アルミニウム合金製ブランクの製造方法及びアルミニウム合金製プレス成形体の製造方法
US9677161B2 (en) 2012-09-27 2017-06-13 Hydro Aluminium Rolled Products Gmbh Method and apparatus for thermally treating an aluminium workpiece and aluminium workpiece
US11441216B2 (en) 2014-03-14 2022-09-13 Imperial Innovations Limited Method of forming parts from sheet metal alloy
US20170247774A1 (en) 2016-02-26 2017-08-31 GM Global Technology Operations LLC Continuous tailor heat-treated blanks
US20220299267A1 (en) 2016-10-17 2022-09-22 Novelis Inc. Metal sheet with tailored properties
US20180251877A1 (en) 2017-03-01 2018-09-06 GM Global Technology Operations LLC High-strength aluminum stampings with tailored properties
WO2019068767A1 (fr) 2017-10-04 2019-04-11 Automation, Press And Tooling, Ap & T Ab Procédé et système pour former une ébauche d'alliage d'aluminium

Also Published As

Publication number Publication date
AT528005B1 (de) 2025-09-15
AT528005A4 (de) 2025-09-15

Similar Documents

Publication Publication Date Title
EP2497840B1 (fr) Système de four et procédé pour le réchauffage partiel d'ébauches métalliques
DE112015000385B4 (de) Halbwarmumformung von kaltverfestigten Blechlegierungen
EP2324938B1 (fr) Procédé et installation de formage à chaud destinés à la fabrication d'une pièce usinée durcie et déformée à chaud
EP2155917B1 (fr) Procédé de production d'un composant profilé durci localement
DE69525171T2 (de) Verfahren zum herstellen nahtloser stahlrohre und produktionsanlage dafür
DE69808738T2 (de) Verfahren zur herstellung eines aluminiumbleches
DE60004233T2 (de) Verfahren und anlage für inline wärmebehandlung von warmgewalztem walzgut
DE102011105447B4 (de) Verfahren zur Herstellung von Aluminium-Druckgussteilen
EP2415882B1 (fr) Procédé de fabrication d'une pièce de formage en tôle à partir d'un alliage en aluminium non durcissable durci par laminage
EP2415895B1 (fr) Pièce de formage en tôle pour véhicule automobile
AT502313B1 (de) Verfahren zum herstellen einer hochschadenstoleranten aluminiumlegierung
DE102017117675B4 (de) Verfahren zur Herstellung eines Kraftfahrzeugbauteils aus einer 6000er Aluminiumlegierung
DE102010049205A1 (de) Warmumformlinie und Verfahren zum Warmumformen von blechförmigem Material
DE102018200843A1 (de) Verfahren und Aufheizvorrichtung zum Aufheizen eines Werkstücks zum Herstellen eines Bauteils, insbesondere für ein Kraftfahrzeug
EP2554288B1 (fr) Method and tool for thermal treatment of aluminium sheet material and aluminium sheet material thermally treated using such a method
EP3420111B1 (fr) Procédé de traitement thermique ciblé sur les zones d'une pièce
DE102009051822B3 (de) Verfahren und Vorrichtung zum Herstellen von Blechformteilen
DE10003791A1 (de) Verfahren zur Herstellung von Felgen
EP3414350B1 (fr) Procédé de traitement thermique et utilisation d'un dispositif de traitement thermique
AT528005B1 (de) Verfahren zum Herstellen eines metallischen Formteils
DE102014213196A1 (de) Formwerkzeug zur Herstellung von warmumgeformten Bauteilen
DE19909519B4 (de) Verfahren zur Herstellung eines Leichtmetallrades
EP2789707B1 (fr) Procédé de fabrication d'un composant de châssis de véhicule automobile
EP3689490B1 (fr) Procédé de fabrication d'un composant métallique au moyen d'un formage à haute pression interne
DE102009039759A1 (de) Verfahren und Vorrichtung zum Strangpressen und nachfolgender elektromagnetischer Umformung