EP0080433B1 - Verfahren zum Kühlen eines Giessstranges während des Stranggiessens - Google Patents

Verfahren zum Kühlen eines Giessstranges während des Stranggiessens Download PDF

Info

Publication number
EP0080433B1
EP0080433B1 EP82810487A EP82810487A EP0080433B1 EP 0080433 B1 EP0080433 B1 EP 0080433B1 EP 82810487 A EP82810487 A EP 82810487A EP 82810487 A EP82810487 A EP 82810487A EP 0080433 B1 EP0080433 B1 EP 0080433B1
Authority
EP
European Patent Office
Prior art keywords
coolant
ingot
strand
cooling
polyacrylamides
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.)
Expired
Application number
EP82810487A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0080433A1 (de
Inventor
Raoul Sautebin
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.)
Alcan Holdings Switzerland AG
Original Assignee
Schweizerische Aluminium AG
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 Schweizerische Aluminium AG filed Critical Schweizerische Aluminium AG
Priority to AT82810487T priority Critical patent/ATE17451T1/de
Publication of EP0080433A1 publication Critical patent/EP0080433A1/de
Application granted granted Critical
Publication of EP0080433B1 publication Critical patent/EP0080433B1/de
Expired 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling

Definitions

  • the invention relates to a method for cooling a casting strand emerging from a continuous casting mold during the continuous casting by applying water directly to the surface of the strand, the water being admixed with an additive which reduces the cooling effect, at least during the start-up process.
  • the inventor has set itself the goal of creating a method of the type mentioned at the outset with which the cooling intensity can be reduced in a simple manner and without the disadvantages mentioned above.
  • the solution to this problem is that partially hydrolyzed anionic polyacrylamides with a molecular weight of 106 to 5 ⁇ 10 7 are added to the cooling water at least during the start-up process.
  • the polyacrylamides can be fed in a previously prepared concentrated form - for example as an aqueous solution with 10 to 50 g polyacrylamides / liter solution - from a storage container via a metering pump into a coolant supply line.
  • the polyacrylamides preferably have a degree of hydrolysis of 10 to 20% and a molecular weight of approximately 1.5 ⁇ 10 7 .
  • the method according to the invention can be implemented both with conventional and with electromagnetic continuous casting molds and is particularly suitable for casting light metals, in particular aluminum and aluminum alloys.
  • the proportion of the additive in the coolant depends on the desired reduction in the cooling intensity and is usually in the order of 1 to 100 mg / liter of water.
  • the supply of the polyacrylamides to the coolant can be interrupted.
  • the concentration of the polyacrylamides in the coolant is continuously reduced during the start-up process. In certain cases, however, it may prove expedient to maintain the method according to the invention during the entire casting process.
  • an alloy 3004 was cast under normal conditions into bars of the format 500 mm x 1600 mm.
  • the cooling water supply was kept constant at 600 liters / minute during the entire casting process.
  • Anionic, 15% hydrolyzed polyacrylamides with a molecular weight of 1.5 ⁇ 10 7 were added to the cooling water up to a strand length of 100 mm.
  • an aqueous solution containing 10 to 50 g of polyacrylamides per liter of solution was fed directly into the main cooling water pipe from a storage tank.
  • the concentration of polyacrylamides in the coolant was 5 - 25 mg per liter of water.
  • the supply of the polyacrylamides was interrupted after the start-up during the further casting process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Moulding By Coating Moulds (AREA)
  • Lubricants (AREA)
EP82810487A 1981-11-20 1982-11-12 Verfahren zum Kühlen eines Giessstranges während des Stranggiessens Expired EP0080433B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82810487T ATE17451T1 (de) 1981-11-20 1982-11-12 Verfahren zum kuehlen eines giessstranges waehrend des stranggiessens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7449/81 1981-11-20
CH744981 1981-11-20

Publications (2)

Publication Number Publication Date
EP0080433A1 EP0080433A1 (de) 1983-06-01
EP0080433B1 true EP0080433B1 (de) 1986-01-15

Family

ID=4325298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810487A Expired EP0080433B1 (de) 1981-11-20 1982-11-12 Verfahren zum Kühlen eines Giessstranges während des Stranggiessens

Country Status (10)

Country Link
US (1) US4473106A (enrdf_load_stackoverflow)
EP (1) EP0080433B1 (enrdf_load_stackoverflow)
JP (1) JPS5893548A (enrdf_load_stackoverflow)
AT (1) ATE17451T1 (enrdf_load_stackoverflow)
AU (1) AU555976B2 (enrdf_load_stackoverflow)
CA (1) CA1201273A (enrdf_load_stackoverflow)
DE (1) DE3268600D1 (enrdf_load_stackoverflow)
IS (1) IS1379B6 (enrdf_load_stackoverflow)
NO (1) NO157888C (enrdf_load_stackoverflow)
ZA (1) ZA828266B (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610295A (en) * 1983-11-10 1986-09-09 Aluminum Company Of America Direct chill casting of aluminum-lithium alloys
US4582118A (en) * 1983-11-10 1986-04-15 Aluminum Company Of America Direct chill casting under protective atmosphere
US4593745A (en) * 1983-11-10 1986-06-10 Aluminum Company Of America Fire retardant continuous casting process
JPH06297404A (ja) * 1993-04-13 1994-10-25 Miyanaga:Kk チェンソー用案内板
US6264767B1 (en) 1995-06-07 2001-07-24 Ipsco Enterprises Inc. Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling
CA2277392C (en) 1998-07-10 2004-05-18 Ipsco Inc. Differential quench method and apparatus
FI20001945L (fi) * 2000-09-05 2002-03-06 Outokumpu Oy Jäähdytysmenetelmä ja- laitteisto ylöspäin tapahtuvan metallien jatkuvavalun yhteydessä

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3397734A (en) * 1966-05-31 1968-08-20 Standard Oil Co Polybutene continuous metal casting lubrication process
US4166495A (en) * 1978-03-13 1979-09-04 Aluminum Company Of America Ingot casting method

Also Published As

Publication number Publication date
ATE17451T1 (de) 1986-02-15
EP0080433A1 (de) 1983-06-01
NO823860L (no) 1983-05-24
NO157888C (no) 1988-06-08
AU9038382A (en) 1983-05-26
ZA828266B (en) 1983-09-28
NO157888B (no) 1988-02-29
DE3268600D1 (en) 1986-02-27
JPH0215302B2 (enrdf_load_stackoverflow) 1990-04-11
IS2762A7 (is) 1983-05-21
AU555976B2 (en) 1986-10-16
JPS5893548A (ja) 1983-06-03
US4473106A (en) 1984-09-25
CA1201273A (en) 1986-03-04
IS1379B6 (is) 1989-08-28

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