EP0819772A1 - Appareil et procédé d'affinage et d'addition d'alliages - Google Patents

Appareil et procédé d'affinage et d'addition d'alliages Download PDF

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Publication number
EP0819772A1
EP0819772A1 EP96810474A EP96810474A EP0819772A1 EP 0819772 A1 EP0819772 A1 EP 0819772A1 EP 96810474 A EP96810474 A EP 96810474A EP 96810474 A EP96810474 A EP 96810474A EP 0819772 A1 EP0819772 A1 EP 0819772A1
Authority
EP
European Patent Office
Prior art keywords
wire
tube
alloy melt
refining
grain
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
Application number
EP96810474A
Other languages
German (de)
English (en)
Other versions
EP0819772B1 (fr
Inventor
Walter Hotz
Eric Wuilloud
Hubert Wetzel
Jürgen Hennings
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management Ltd
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 Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Priority to AT96810474T priority Critical patent/ATE194017T1/de
Priority to DE59605464T priority patent/DE59605464D1/de
Priority to EP96810474A priority patent/EP0819772B1/fr
Priority to ES96810474T priority patent/ES2148716T3/es
Priority to IS4525A priority patent/IS1906B/is
Priority to NO19973347A priority patent/NO315751B1/no
Publication of EP0819772A1 publication Critical patent/EP0819772A1/fr
Application granted granted Critical
Publication of EP0819772B1 publication Critical patent/EP0819772B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006—Adding metallic additives

Definitions

  • the invention relates to a method for grain refinement or Refinement of metal alloys by continuous feeding a grain refining or refining agent in the Form of a wire containing the agent into an alloy melt.
  • a grain refining or refining agent in the Form of a wire containing the agent into an alloy melt.
  • Within the scope of the invention is also a Implementation of the method suitable device and an application of the method or use of the device.
  • metal alloys can a coarse-grained structure occurs, which has lower strength and ductility than fine-grained ones Structure.
  • nucleating additives to the melt a fine-grained structure with better mechanical properties and improved processability can be achieved.
  • the added Agents react in the melt after complex processes and act as foreign germs.
  • Grain refining agent in the form of a grain refining wire Add the alloy melt in the pouring channel in the solid state.
  • a commercially available grain refining wire consists of an aluminum-titanium-boron master alloy with a for example composition Al-5% Ti-1% B.
  • the grain refining wire is the aluminum flowing past first eroded and only melted completely after some time. For this reason, the distribution of the grain-refining Effect producing titanium boride particles in the Melting is not always homogeneous. Remaining titanium boride particles often form agglomerates or accumulate on oxide skins or other impurities and are thus in the Casting formats introduced, which leads to undesirable end products Errors.
  • the invention is therefore based on the object of a method and to create a device of the type mentioned at the outset, which lead to a more homogeneous distribution of grain refinement or metal finishing agents in the melt and at the same time the agglomeration of grain refinement or Reduce finishing particles and grain refinement or Improve finishing efficiency.
  • the task of making the wire before adding it to the alloy melt melted and in a liquid state in the Alloy melt is entered.
  • the wire can melt also be sufficient to wire the wire just below the temperature lying at the liquidus temperature in order to thus a faster dissolution of the wire when adding in to reach the alloy melt.
  • Oxide skinning during the melting of the wire can cause it also from the transition to the liquid state up to the entry into the alloy melt in an oxygen-free atmosphere being held. With this measure, the introduction can of oxide skins in the melt can be effectively reduced.
  • the wire is preferably in an electromagnetic Field heated up to the liquid state and at the same time stirred in the electromagnetic field.
  • the wire can be reinforced in the deagglomerating effect liquid state can also be treated with ultrasound.
  • the grain refining wire can be added in the liquid state of metal before dilution in the alloy melt will.
  • Ultrasonic treatment is a homogeneous mixing in reached in a short time.
  • the wire can basically be in a small melting furnace melted and the melt to be treated in the Gutter gutter are added, the one fed to the melt Amount of grain refining or finishing agent can be easily controlled via the wire feeder can.
  • One for carrying out the method according to the invention particularly suitable device is characterized by a tube made of a heat-resistant material with a first open end to insert the wire and one to Immerse in the alloy melt to be treated second open end and one for melting the Wire heater arranged between the two pipe ends.
  • the heating device is preferably an induction coil wrapped around the tube for inductive heating of the wire is.
  • melt Part of the tube can be melted through the alloy flow-through pipe wall provided through openings be.
  • This part of the tube can also be flared End part shaped or as angled in the direction of flow End piece with an upstream into this Inlet funnel to be formed.
  • To reduce the agglomeration of grain refining or Refinement particles can on the tube in the melting range of the Grain refining wire can be arranged in an ultrasound transmitter.
  • the tube at its first open end in one first feed pipe for the grain refining or finishing wire and into a second feed pipe for a metal wire be divided. Both feed pipes are expedient each covered with an induction coil.
  • the device according to the invention for introducing a grain refining or refining agent into an alloy melt can easily be anywhere in the world Watering gutter can be used.
  • oxide skins or other impurities are so small that they are the usual Quality requirements of continuous cast ingots or Press bolts are sufficient so that the insertion device can be used also directly in front of the casting machine, i.e. after metal filtration is possible. With this measure the consumption of grain refining or finishing wire reduce significantly.
  • the alloy melt becomes like the usual one today controlled wire feed controlled.
  • the solid wire that in the tube is pushed in, presses the already melted one Part in the alloy melt in the trough and it melts itself continuously.
  • the inductive Heating supplied energy for melting the wire is of the desired grain refinement or finishing agent addition as well as the actual and target temperature and is controlled accordingly. This can be done, for example the temperature measured by means of a temperature measuring device of the molten wire is used as a control signal will.
  • inventive method and the device basically apply to all alloy systems and grain refinement or finishing agents.
  • a particularly preferred one Area of application is grain refinement or refinement of aluminum alloys with a master alloy the base aluminum-titanium-boron, however, others can Grain refining or refining agents of a known type such as e.g. AlSr, AlP or AlCa can be used.
  • An entry device 10 shown in FIG. 1 for entry a grain refining or refining agent in a Aluminum melt comprises a tube 12 made of a heat-resistant Material such as Quartz.
  • a first open end 14 of the Tube 12 is used to introduce a so-called grain refining or finishing wire 18 with an example Composition Al-5% Ti-1% B.
  • the tube 12 dips with his second open end into a molten metal 20 that is inside a gutter 24 from one in the drawing for reasons the better overview not shown melting furnace to one also not shown in the drawing Casting machine or filter box leads.
  • the tube 12 is immersed in Direction of flow direction x into the molten metal 20 and forms an angle ⁇ with the metal surface 22 for example 60 °.
  • An induction coil 26 is wound around the tube 12. This Induction coil 26 serves on the one hand to melt the Wire 18 and on the other hand causes an electromagnetic Stir the melted wire 18. For support of the stirring effect and for the destruction of any still existing Agglomerates of grain refining or refining particles is on tube 12 in the area of the melted wire 18 an ultrasonic transmitter 28 is arranged.
  • openings 34 in on its upstream side the pipe wall provided in the area of the part immersed in the molten metal 20 of the tube 12 .
  • the through the openings 34 in the inside of the tube 12 flowing melt leads to a Predilution of the melted wire 18 before it the melt 20 in the trough 24 in the form of discrete Grain refinement or refining particles 19 is supplied.
  • One in the interior of the tube 12 in the melted area of the grain refining wire 18 introduced temperature measuring device 32 can be used to control the heating power of the induction coil 26 are used.
  • FIG. 3 Another entry device 50 shown in FIG. 3 has a central pipe section 52, in which on a at its ends two feed pipes 54, 56 open.
  • the first Feed pipe 54 is used to feed a grain refinement or Finishing wire 58, e.g. Al-5% Ti-1% B, the second Feed pipe 56 for feeding an aluminum wire 60.
  • Both feed pipes 54, 56 and the one connected to them Part of the central tube section 52 are with induction coils 62, 64, 66 wrapped.
  • these serve for melting the grain refining or finishing wire 58 and of the aluminum wire 60 and, on the other hand, cause the stirring effect is an intensive mixing of the melted Areas of the grain refining or finishing wire 58 and the aluminum wire 60.
  • the stirring effect also reduces the formation of agglomerates from grain refining or refining particles or causes comminution any agglomerates present.
  • the end of the central immersed in the molten metal 20 Pipe section 52 is the end piece 74 in the flow direction x Metal melt 20 angled.
  • an inlet funnel 78 At the transition from the central Pipe section 52 opens into the angled end piece 74 upstream to the end piece 74 an inlet funnel 78.
  • the through molten metal 20 flowing through this inlet funnel 78 mixes intensively with the already prediluted Wire 58 from the central tube 52 and thus causes another Predilution.
  • the selected arrangement of the inlet funnel 78 and end piece 74 acts in the manner of a Venturi tube and leads to a strong swirl in the end piece 74, the by an induction coil 76 arranged around the end piece 74 can still be reinforced.
  • an ultrasound transmitter 68 for inert gas
  • a supply nozzle 70 for inert gas for inert gas
  • a temperature measuring device 72 for power control of the various induction coils arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Cereal-Derived Products (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP96810474A 1996-07-19 1996-07-19 Procédé d'affinage et d'addition d'alliages Expired - Lifetime EP0819772B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT96810474T ATE194017T1 (de) 1996-07-19 1996-07-19 Verfahren zur kornfeinerung oder veredelung von metallegierungen
DE59605464T DE59605464D1 (de) 1996-07-19 1996-07-19 Verfahren zur Kornfeinerung oder Veredelung von Metallegierungen
EP96810474A EP0819772B1 (fr) 1996-07-19 1996-07-19 Procédé d'affinage et d'addition d'alliages
ES96810474T ES2148716T3 (es) 1996-07-19 1996-07-19 Procedimiento de afino del grano o de acabado de aleaciones metalicas.
IS4525A IS1906B (is) 1996-07-19 1997-07-15 Aðferð til kornahreinsunar og melmisblöndunar á melmi
NO19973347A NO315751B1 (no) 1996-07-19 1997-07-18 Anordning for kornforfining eller foredling av legering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810474A EP0819772B1 (fr) 1996-07-19 1996-07-19 Procédé d'affinage et d'addition d'alliages

Publications (2)

Publication Number Publication Date
EP0819772A1 true EP0819772A1 (fr) 1998-01-21
EP0819772B1 EP0819772B1 (fr) 2000-06-21

Family

ID=8225656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810474A Expired - Lifetime EP0819772B1 (fr) 1996-07-19 1996-07-19 Procédé d'affinage et d'addition d'alliages

Country Status (6)

Country Link
EP (1) EP0819772B1 (fr)
AT (1) ATE194017T1 (fr)
DE (1) DE59605464D1 (fr)
ES (1) ES2148716T3 (fr)
IS (1) IS1906B (fr)
NO (1) NO315751B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017538043A (ja) * 2014-11-05 2017-12-21 コンステリウム イソワールＣｏｎｓｔｅｌｌｉｕｍ Ｉｓｓｏｉｒｅ 管状ソノトロードの利用方法
CN115558819A (zh) * 2022-10-29 2023-01-03 中铝瑞闽股份有限公司 铝合金铸锭晶粒细化的方法和生产装置
CN115786833A (zh) * 2022-11-15 2023-03-14 西北工业大学 一种强磁场处理细化钛铝合金显微组织的方法
CN116237514A (zh) * 2022-12-08 2023-06-09 福建祥鑫新材料科技有限公司 一种高比强度高延伸6系铝合金防撞梁及其制备方法
CN119566238A (zh) * 2024-11-11 2025-03-07 广州众山新能源科技有限公司 一种金属固液复合板带的制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110976786A (zh) * 2019-12-02 2020-04-10 中信戴卡股份有限公司 一种铝合金液导流装置及导流方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836360A (en) * 1972-07-10 1974-09-17 Anaconda Co Method and apparatus for pre-heating and adding master alloy to a copper melt
GB1431123A (en) * 1973-08-22 1976-04-07 Stein Refractories Metallurgical lances
US4057420A (en) * 1976-02-06 1977-11-08 Airco, Inc. Methods for dissolving volatile addition agents in molten metal
US4154604A (en) * 1976-07-28 1979-05-15 Mannesmann Aktiengesellschaft Feeding additives into the interior of molten metal
US4520861A (en) * 1983-11-18 1985-06-04 Republic Steel Corporation Method and apparatus for alloying continuously cast steel products
EP0596134A1 (fr) * 1992-04-24 1994-05-11 Nippon Steel Corporation Procede pour obtenir une piece moulee en deux couches

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836360A (en) * 1972-07-10 1974-09-17 Anaconda Co Method and apparatus for pre-heating and adding master alloy to a copper melt
GB1431123A (en) * 1973-08-22 1976-04-07 Stein Refractories Metallurgical lances
US4057420A (en) * 1976-02-06 1977-11-08 Airco, Inc. Methods for dissolving volatile addition agents in molten metal
US4154604A (en) * 1976-07-28 1979-05-15 Mannesmann Aktiengesellschaft Feeding additives into the interior of molten metal
US4520861A (en) * 1983-11-18 1985-06-04 Republic Steel Corporation Method and apparatus for alloying continuously cast steel products
EP0596134A1 (fr) * 1992-04-24 1994-05-11 Nippon Steel Corporation Procede pour obtenir une piece moulee en deux couches

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017538043A (ja) * 2014-11-05 2017-12-21 コンステリウム イソワールＣｏｎｓｔｅｌｌｉｕｍ Ｉｓｓｏｉｒｅ 管状ソノトロードの利用方法
US10837081B2 (en) * 2014-11-05 2020-11-17 Constellium Issoire Method for using a tubular sonotrode
CN115558819A (zh) * 2022-10-29 2023-01-03 中铝瑞闽股份有限公司 铝合金铸锭晶粒细化的方法和生产装置
CN115786833A (zh) * 2022-11-15 2023-03-14 西北工业大学 一种强磁场处理细化钛铝合金显微组织的方法
CN115786833B (zh) * 2022-11-15 2024-02-09 西北工业大学 一种强磁场处理细化钛铝合金显微组织的方法
CN116237514A (zh) * 2022-12-08 2023-06-09 福建祥鑫新材料科技有限公司 一种高比强度高延伸6系铝合金防撞梁及其制备方法
CN119566238A (zh) * 2024-11-11 2025-03-07 广州众山新能源科技有限公司 一种金属固液复合板带的制备方法

Also Published As

Publication number Publication date
IS4525A (is) 1998-01-20
EP0819772B1 (fr) 2000-06-21
NO973347L (no) 1998-01-20
NO315751B1 (no) 2003-10-20
ATE194017T1 (de) 2000-07-15
ES2148716T3 (es) 2000-10-16
NO973347D0 (no) 1997-07-18
DE59605464D1 (de) 2000-07-27
IS1906B (is) 2003-12-16

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