EP2483014A1 - Verfahren zum bandgiessen von stahl und anlage zum bandgiessen - Google Patents
Verfahren zum bandgiessen von stahl und anlage zum bandgiessenInfo
- Publication number
- EP2483014A1 EP2483014A1 EP10765755A EP10765755A EP2483014A1 EP 2483014 A1 EP2483014 A1 EP 2483014A1 EP 10765755 A EP10765755 A EP 10765755A EP 10765755 A EP10765755 A EP 10765755A EP 2483014 A1 EP2483014 A1 EP 2483014A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- casting
- strip
- cast
- conveyor belt
- 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
Links
- 238000005266 casting Methods 0.000 title claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims abstract description 3
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 description 7
- 238000003754 machining Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 238000007528 sand casting Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000000930 thermomechanical effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0608—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by caterpillars
-
- 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
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/002—Stainless steels
-
- 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
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D5/00—Machines or plants for pig or like casting
- B22D5/04—Machines or plants for pig or like casting with endless casting conveyors
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
Definitions
- the invention relates to a method for casting a steel having a chromium content of more than 15 percent by weight, in particular more than 33 percent by weight.
- High-temperature-resistant and wear-resistant steels with a high chromium content and carbon-containing alloys have hitherto been produced as individual parts in a discontinuous sand casting process.
- the cast product is then mechanically processed directly without additional thermomechanical treatment.
- liquid steel is fed by means of a feed system with a correspondingly formed nozzle onto a circulating transport belt cooled from below with water.
- the conveyor belt is driven and guided by two pulleys.
- the melt applied to the conveyor belt solidifies completely in the area of the primary cooling. After solidification, the strip enters inline rolling in rolling stands. After inline rolling and another cooling process, the tape is rewound.
- Such a casting method for strip casting is known from DE 198 52 275 A1.
- WO 02/064288 A1 also discloses a method and a device for casting and solidifying liquid metal and its division, which is intended in particular for ferroalloys or non-ferrous metals and for their division.
- endless strips of predeterminable thickness are produced from the liquid phase by the use of a strip casting plant.
- a crushing plant divides these into pieces, wherein in the surface of the bands during casting and solidification, a pattern of predetermined breaking points is impressed, which determines the predefined, optimal size of the product pieces when breaking the tape.
- selected components for example bearing sleeves for turbochargers
- this object is achieved in a method of the type mentioned in that the steel is poured in a horizontal strip caster.
- the invention is particularly suitable for casting a steel which additionally has a carbon content of more than 1 percent by weight.
- the strip casting method is advantageously used if the steel additionally has a silicon content of more than 2 percent by weight. It can be provided that the cast steel strip or casting plates produced by casting are cut, milled, drilled or annealed.
- the invention also relates to a horizontal strip casting plant for carrying out the method explained above.
- the strip casting plant is characterized in that it comprises a melting furnace, a ladle and a conveyor belt for receiving and cooling a flowing out of the ladle liquid steel.
- the invention thus aims at the use of a horizontal Bandgit- device for the production of building or insert parts from, for example, high-alloy tool steels from whose dimensions match the cast strip thickness in horizontal strip casting, so that a hot rolling with the goal of recrystallization or thickness reduction is not necessary is.
- the blanks can be cast continuously, and the creation of single-shot molds, as in sand casting, is eliminated.
- the conveyor belt is equipped with recesses for the formation of cast iron plates within the steel strip or with transverse projections for the formation of predetermined breaking points within the steel strip.
- the strip caster may be associated with other equipment for the mechanical aftertreatment of cast by the conveyor belt casting plates. These are, for example, cutting devices for the exact definition of the width and the length of the cast blanks which already have dimensions close to their final dimensions during the casting process. Alternatively, the cast semi-finished product is processed by various mechanical methods to obtain the desired final dimensions.
- a separating or cutting device for severing the cast product is arranged downstream of the conveyor belt in the conveying direction.
- 1a, b is a schematic side view and a plan view of a plant for strip casting according to a first embodiment
- FIGS. 2a, b show a side sectional view of a conveyor belt for pouring cast platelets and a plan view of the conveyor belt, with which cast platens of different dimensions are cast side by side, and
- the outlet nozzle 4 has a width which corresponds to the width of a casting plate 7 to be cast on the revolving conveyor belt 5.
- the conveyor belt 5 is driven and guided by two deflection rollers 10, 11 each equipped with its own drive 8, 9.
- the conveyor belt 5 passes through the container 13 of the cooling device 6, which may also comprise further devices for cooling the circuit board 7.
- the two deflection rollers 10, 11 can each flow through a cooling liquid.
- a spray cooling device 14 which sprays the conveyor belt 5 from the bottom with a cooling liquid.
- a board 7 pour, the length of which corresponds approximately to the length of the system 1 or beyond its length.
- the casting board 7 either already has the desired length resulting from a determination of the amount of liquid steel in the tundish, or it is separated by means of a cutting or crushing device 15 after leaving the conveyor belt 5 and fed to a semi-finished stock 16. From there, it is forwarded for further treatment, for example milling, drilling, annealing or further cutting or other machining processes, to the corresponding devices and devices. Since the board 7 already having the desired thickness, it does not need to undergo a rolling process as a thermomechanical treatment process. However, depending on the desired material properties, a rolling process may also be provided as a treatment step to the casting process, either immediately after this or after the castings have cooled.
- a conveyor belt 17 (FIGS. 2 a, b) has a plurality of depressions 19 in a further strip casting installation 18 whose dimensions are close to the final dimensions of the castings to be cast in them.
- the recesses 19 are either only one after the other or depending on the width of the conveyor belt 17 additionally arranged side by side. The dimensions of the adjacent recesses 19 may have different dimensions.
- a plurality of outlet nozzles 20 Corresponding to the number of rows of depressions 19 mounted next to one another on the conveyor belt 17, a plurality of outlet nozzles 20 having a width adapted thereto are also provided.
- Casting can be used to produce castings of various thicknesses; Usually, the casting thickness is between 8 and 25 mm, preferably 15 mm.
- Typical applications of the high-alloy material are bearing sleeves, for example, the dimensions of 13 mm (thickness) x 120 mm (length) and are made by machining of castings, for example, with the thickness 15 mm and the same width on a lathe, wherein the hollow cylindrical Form is produced by drilling out of the core. All other forms are obtained by machining superficial material of the castings.
- the casting geometry is 15 mm (width) x 125 mm (length); this results from mechanical, in particular Machining, machining a component geometry of 12.7 mm (width) x 120 mm (length).
- this preferably also contains carbon of more than 1 percent by weight and / or silicon of more than 2 percent by weight.
- the property profile of the castings to be cast with the strip caster 1 or 18 includes good high temperature resistance combined with good wear resistance.
- the Rockwell hardness (HRC) is 33 to 38 at a tensile strength of about 1000 MPa.
- HRC Rockwell hardness
- the process-typical rapid cooling has positive effects on the microstructure of the castings. Grain size is reduced and precipitates, such as carbides, are finely dispersed in the matrix due to the impeded diffusion. This results in advantageous mechanical properties.
- various possibilities of temperature control for cooling the castings (Fig. 3a - d).
- a first procedure (FIG. 3 a)
- the temperature of the cast products is initially held for a predetermined time and then cooled off at a defined cooling rate (curve 21).
- a heating phase may also follow (curve 22).
- the castings are not cooled until later.
- the cast products are heated to a defined temperature immediately after casting (FIG. 3b) and only then cooled for a predetermined period of time at a predetermined cooling rate.
- the castings are directly through Quenching rapidly cooled ( Figure 3c) and then subjected to a controlled temperature control over time, as far as they have not yet assumed the ambient temperature by the quenching process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009048165A DE102009048165A1 (de) | 2009-10-02 | 2009-10-02 | Verfahren zum Bandgießen von Stahl und Anlage zum Bandgießen |
PCT/EP2010/005995 WO2011038925A1 (de) | 2009-10-02 | 2010-10-01 | Verfahren zum bandgiessen von stahl und anlage zum bandgiessen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2483014A1 true EP2483014A1 (de) | 2012-08-08 |
EP2483014B1 EP2483014B1 (de) | 2017-08-16 |
Family
ID=43638695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10765755.3A Active EP2483014B1 (de) | 2009-10-02 | 2010-10-01 | Verfahren zum bandgiessen von stahl und anlage zum bandgiessen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20120325425A1 (de) |
EP (1) | EP2483014B1 (de) |
CN (1) | CN102574201A (de) |
DE (1) | DE102009048165A1 (de) |
RU (1) | RU2532217C2 (de) |
TW (1) | TWI576181B (de) |
WO (1) | WO2011038925A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2759614B1 (de) * | 2013-01-25 | 2019-01-02 | ThyssenKrupp Steel Europe AG | Verfahren zum Erzeugen eines Stahlflachprodukts mit einem amorphen, teilamorphen oder feinkristallinen Gefüge und derart beschaffenes Stahlflachprodukt |
CN108941490A (zh) * | 2018-08-28 | 2018-12-07 | 成都蜀虹装备制造股份有限公司 | 一种有色金属定向铸造器 |
CN110576159A (zh) * | 2019-10-29 | 2019-12-17 | 禹州市昆仑模具股份有限公司 | 一种环形浇铸线 |
CN111534707A (zh) * | 2020-04-07 | 2020-08-14 | 浙江顺虎铝业有限公司 | 一种高精度耐磨铝合金材料的一体化生产设备 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS528846B2 (de) * | 1972-07-07 | 1977-03-11 | ||
JPS51103035A (en) * | 1975-03-10 | 1976-09-11 | Nippon Kokan Kk | Fuerokuromuno chuzoho |
US4212343A (en) * | 1979-03-16 | 1980-07-15 | Allied Chemical Corporation | Continuous casting method and apparatus for structurally defined metallic strips |
US4285386A (en) * | 1979-03-16 | 1981-08-25 | Allied Chemical Corporation | Continuous casting method and apparatus for making defined shapes of thin sheet |
AU8103882A (en) * | 1981-03-12 | 1982-09-16 | British Steel Corp. | Continuous casting of metal strip |
CA1181558A (en) * | 1982-04-08 | 1985-01-29 | Takashi Onoyama | Apparatus for producing flake particles |
EP0111728A3 (de) * | 1982-11-12 | 1985-04-03 | Concast Standard Ag | Verfahren und Vorrichtung zur Herstellung band- oder folienartiger Produkte |
JPS6390339A (ja) * | 1986-10-01 | 1988-04-21 | Sumitomo Heavy Ind Ltd | ツインベルト式連鋳機 |
EP0658633A3 (de) * | 1989-05-16 | 1995-10-25 | Nippon Steel Corp | Rostfreie Stahlfolie für Katalysatorträger in Auspuffentgiftungsanlagen für Kraftfahrzeuge und Verfahren zu ihrer Herstellung. |
US5103892A (en) * | 1990-02-28 | 1992-04-14 | Asarco Incorporated | Continuous casting of discrete shapes |
US5756131A (en) * | 1992-12-07 | 1998-05-26 | Suh; Kun Hee | Continuous building materials moulding device |
FR2746333B1 (fr) * | 1996-03-22 | 1998-04-24 | Usinor Sacilor | Procede de coulee continue d'une bande d'acier inoxydable austenitique sur une ou entre deux parois mobiles dont les surfaces sont pourvues de fossettes, et installation de coulee pour sa mise en oeuvre |
CN1210045A (zh) * | 1997-08-28 | 1999-03-10 | 张友富 | 卧式连续铸模机 |
DE19852275C2 (de) | 1998-11-13 | 2002-10-10 | Sms Demag Ag | Anlage und Verfahren zum Bandgießen |
DE10047044A1 (de) * | 2000-09-22 | 2002-04-25 | Sms Demag Ag | Verfahren und Anlagen zum Herstellen von Bändern und Blechen aus Stahl |
ATE296696T1 (de) | 2001-02-09 | 2005-06-15 | Sms Demag Ag | Verfahren und vorrichtung zum vergie en und erstarren von flüssigem metall und dessen zerteilung |
DE102007022931A1 (de) * | 2006-05-26 | 2007-11-29 | Sms Demag Ag | Verfahren und Vorrichtung zum Herstellen eines Metallbandes durch Stranggießen |
-
2009
- 2009-10-02 DE DE102009048165A patent/DE102009048165A1/de not_active Withdrawn
-
2010
- 2010-10-01 TW TW099133486A patent/TWI576181B/zh not_active IP Right Cessation
- 2010-10-01 US US13/499,830 patent/US20120325425A1/en not_active Abandoned
- 2010-10-01 RU RU2012117180/02A patent/RU2532217C2/ru not_active IP Right Cessation
- 2010-10-01 WO PCT/EP2010/005995 patent/WO2011038925A1/de active Application Filing
- 2010-10-01 EP EP10765755.3A patent/EP2483014B1/de active Active
- 2010-10-01 CN CN2010800451330A patent/CN102574201A/zh active Pending
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2011038925A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20120325425A1 (en) | 2012-12-27 |
RU2012117180A (ru) | 2013-11-10 |
TWI576181B (zh) | 2017-04-01 |
DE102009048165A1 (de) | 2011-04-07 |
WO2011038925A1 (de) | 2011-04-07 |
CN102574201A (zh) | 2012-07-11 |
TW201113110A (en) | 2011-04-16 |
EP2483014B1 (de) | 2017-08-16 |
RU2532217C2 (ru) | 2014-10-27 |
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