US20050158204A1 - Method of production of broadside plates for continuous casting molds - Google Patents
Method of production of broadside plates for continuous casting molds Download PDFInfo
- Publication number
- US20050158204A1 US20050158204A1 US11/078,006 US7800605A US2005158204A1 US 20050158204 A1 US20050158204 A1 US 20050158204A1 US 7800605 A US7800605 A US 7800605A US 2005158204 A1 US2005158204 A1 US 2005158204A1
- Authority
- US
- United States
- Prior art keywords
- continuous casting
- side plates
- production
- casting molds
- broad side
- 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.)
- Abandoned
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 4
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000035882 stress Effects 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QZLJNVMRJXHARQ-UHFFFAOYSA-N [Zr].[Cr].[Cu] Chemical compound [Zr].[Cr].[Cu] QZLJNVMRJXHARQ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
Definitions
- the invention relates to a method of production of broad side plates for thin slab continuous casting molds, in particular, of a hardenable copper alloy.
- the mold broad plates for thin slab plants and, in particular, for CSP (Compact Strip Production) plants are produced from copper alloys such as CuCrZr (copper-chromium-zirconium) or CuAg (copper-argentum).
- CuCrZr copper-chromium-zirconium
- CuAg copper-argentum
- mold broad plates of CuAg or CuCrZr are not capable to withstand high thermal stresses prevailing in the region of the bath level of the molten metal, and have a tendency to form cracks in the plates in this region, with the CuCrZr having a tendency to a particularly earlier crack formation.
- This crack formation is a primary failure criterium for the mold broad plates and results in high repair and replacement costs incurable by an operator of a continuous casting plant.
- CuAg despite its reduced tensile strength, has a reduced crack formation tendency because, as a result of its increased extensibility at high temperatures in the mold plate, it is capable of absorbing stresses and because its comparatively high heat conductance permits to retain smaller mean operational temperature.
- CuCrZr with a hardness of about 125 HB is used, with their side contact surfaces being nickel-plated for increasing hardness.
- the primary failure criterium of the narrow side plates in distinction from the broad side plates, is not the crack formation but rather wear or abrasion of contact surfaces by steel. Contrary to this, the primary failure criterium of the broad side plates is the crack formation in the molten level region.
- German Patent DE 31 20 987 C2 discloses a number of precipitation-hardenable copper alloys and their use for stationary continuous casting molds, among others, different CuNiBe-alloys which contain other alloying components niobium (Nb), zirconium (Zr), magnesium (Mg), and/or titanium (Ti).
- U.S. Pat. No. 2,137,281 discloses a copper alloy CuZrNiBe for a strip mold (twin-belt casting) characterized by a combination of features of a comparatively high heat conductance.
- British Patent No. 954,796 discloses a copper alloy CuBeZrTi for molds which, at a comparatively good heat conductance, has comparatively high strength values.
- the object of the invention is to provide suitable copper alloys for producing broad side plates for thin slab continuous casting molds at high speeds, the use of which, during a casting operation, would prevent a premature crack formation, in particular, in the region of the molten level, and the wear of contact surfaces by the fluid steel, and which would withstand, at a lasting service life, extremely high thermal and mechanical loads during a casting operation.
- the object of invention is achieved by use of a hardenable copper alloy with content of beryllium from 0.1% to 0.5%, content of nickel from 0.5% to 2.0% (CuNiBe) for production of broad side plates for slab continuous casting molds.
- a hardenable copper alloy with content of beryllium from 0.1% to 0.5%, content of nickel from 0.5% to 2.0% (CuNiBe) for production of broad side plates for slab continuous casting molds.
- this copper alloy after being hardened, is capable of withstanding high thermal stresses in the bath level region, with reduction in crack formation, while being available over larger operational time periods.
- the inventive copper alloy CuNiBe permits to achieve advantageous material characteristics, e.g., a substantially higher tensile strength of about 770 or about 650 N /mm 2 and, at a 0.2 proof stress, of about 500 N /mm 2 both at 20° C. and at 300° C.
- heat conductance of the copper alloy CuNiBe of about 300 W/mk can be compensated by water-cooling of reduced copper wall thickness by about 25%.
- the inventive copper alloy CuNiBe for production of broad side plates for thin slab continuous casting molds with high casting speeds contains as alloy components 0.1% to 0.5% beryllium, 0.5% to 2% nickel, and copper up to 99.5% by weight.
- the invention provides for a special copper alloy CuNiBe for broad side plates of continuous casting molds which enables casting of thin slabs with high speeds of at least 2 to 6 m/min and more.
- the noticeable improvement of operational characteristics due to the extended service life, in particular, a reduced crack formation in bath level region, economical use of material, and low-cost manufacture are results of the particular selection of the alloying components.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
A method of production of broad side plates for thin slab continuous casting molds with casting speeds of at least 2 to 6 m/min and higher includes producing of a hardenable copper allow containing by weight, 1% to 0.5% beryllium, 0.5% to 2% nickel which, together with a copper component, amount to at least 99.5%, and maximum 0.5% of impurities; and forming the broad side plates of the hardenable copper alloy.
Description
- This application is a division of application Ser. No. 10/257,512 filed Apr. 2, 2003 and which is a National stage application of International application PCT/EPO1/04235.
- 1. Field of the Invention
- The invention relates to a method of production of broad side plates for thin slab continuous casting molds, in particular, of a hardenable copper alloy.
- 2. Description of the Prior Art
- At the present state of the art, the mold broad plates for thin slab plants and, in particular, for CSP (Compact Strip Production) plants are produced from copper alloys such as CuCrZr (copper-chromium-zirconium) or CuAg (copper-argentum). At that, the CuAg alloy for CSP-mold plates proved to be advantageous because of its comparatively high elongation at elevated temperatures.
- However, mold broad plates of CuAg or CuCrZr are not capable to withstand high thermal stresses prevailing in the region of the bath level of the molten metal, and have a tendency to form cracks in the plates in this region, with the CuCrZr having a tendency to a particularly earlier crack formation. This crack formation is a primary failure criterium for the mold broad plates and results in high repair and replacement costs incurable by an operator of a continuous casting plant.
- It should be noted that CuAg, despite its reduced tensile strength, has a reduced crack formation tendency because, as a result of its increased extensibility at high temperatures in the mold plate, it is capable of absorbing stresses and because its comparatively high heat conductance permits to retain smaller mean operational temperature.
- For narrow side plates of thin slab molds, at the present state of the art, usually, CuCrZr with a hardness of about 125 HB is used, with their side contact surfaces being nickel-plated for increasing hardness.
- The primary failure criterium of the narrow side plates, in distinction from the broad side plates, is not the crack formation but rather wear or abrasion of contact surfaces by steel. Contrary to this, the primary failure criterium of the broad side plates is the crack formation in the molten level region.
- German Patent DE 31 20 987 C2 discloses a number of precipitation-hardenable copper alloys and their use for stationary continuous casting molds, among others, different CuNiBe-alloys which contain other alloying components niobium (Nb), zirconium (Zr), magnesium (Mg), and/or titanium (Ti).
- U.S. Pat. No. 2,137,281 discloses a copper alloy CuZrNiBe for a strip mold (twin-belt casting) characterized by a combination of features of a comparatively high heat conductance.
- British Patent No. 954,796 discloses a copper alloy CuBeZrTi for molds which, at a comparatively good heat conductance, has comparatively high strength values.
- For a disturbance-free casting operation, in particular, for thin slabs with high speeds, e.g., of 6 m/min and more, the existing mechanical characteristics of mold materials are not adequate for controlling occurring high temperatures, in particular, in the region of the bath level.
- Proceeding from the above-mentioned state-of-the-art, the object of the invention is to provide suitable copper alloys for producing broad side plates for thin slab continuous casting molds at high speeds, the use of which, during a casting operation, would prevent a premature crack formation, in particular, in the region of the molten level, and the wear of contact surfaces by the fluid steel, and which would withstand, at a lasting service life, extremely high thermal and mechanical loads during a casting operation.
- The object of invention is achieved by use of a hardenable copper alloy with content of beryllium from 0.1% to 0.5%, content of nickel from 0.5% to 2.0% (CuNiBe) for production of broad side plates for slab continuous casting molds.
- Advantageously, this copper alloy, after being hardened, is capable of withstanding high thermal stresses in the bath level region, with reduction in crack formation, while being available over larger operational time periods.
- In addition to this successful operational result, contrary to the known copper alloy such as CuCrZr or CuAg, the inventive copper alloy CuNiBe permits to achieve advantageous material characteristics, e.g., a substantially higher tensile strength of about 770 or about 650N/mm2 and, at a 0.2 proof stress, of about 500N/mm2 both at 20° C. and at 300° C.
- The material characteristics of three selected, by way of example, copper alloys CuCrZr, CuAg, an CuNiBe are given in the following tables:
MATERIAL CHARACTERISTICS CuNiBe Approximate CuCrZr CuAg Specially Values Content Hardened Cold-Formed Hardened Chemical Composition Chemical % .70 Cr .09 Ag 1.8 Ni Composition % .10 Zr .006 P .30 Be Physical Characteristics Heat W/mk 340 370 300 Conductance Mechanical Characteristics RT at .2 proof N/mm2 300 265 500 20° Stress Rp .2 Tensile N/mm2 415 3880 770 Strength Rm Elongation A5 % 25 18 15 RT at .2 proof N/mm2 240 195 420 300° Stress Rp .2 Tensile N/mm2 330 200 650 Strength Rm Elongation A5 % 18 10 8 RT Hardness HB 125 100 at 20° C. - Other positive characteristics, e.g., resistance to mechanical wear follow from the high harness of the inventive material of about 220 HB, because CuNiBe has approximately the same hardness as a galvanically applied nickel layer having approximately 220-230 HB. The broad side plates need not any more be nickel-plated.
- The lower, in comparison with CuAg heat conductance of about 370 W/mk, heat conductance of the copper alloy CuNiBe of about 300 W/mk can be compensated by water-cooling of reduced copper wall thickness by about 25%.
- The inventive copper alloy CuNiBe for production of broad side plates for thin slab continuous casting molds with high casting speeds, e.g., from 2 to 6 m/min contains as alloy components 0.1% to 0.5% beryllium, 0.5% to 2% nickel, and copper up to 99.5% by weight.
- It should contain not more than 0.5% of impurities under which, e.g., traces of other metals such as Fe, Zr, Ag, Cr, Mg., etc. . . . are understood.
- The invention provides for a special copper alloy CuNiBe for broad side plates of continuous casting molds which enables casting of thin slabs with high speeds of at least 2 to 6 m/min and more. The noticeable improvement of operational characteristics due to the extended service life, in particular, a reduced crack formation in bath level region, economical use of material, and low-cost manufacture are results of the particular selection of the alloying components.
Claims (2)
1. (canceled)
2. A method of producing broad side plates for thin slab continuous casting molds with a casting speed of at least 2 to 6 m/min, comprising the steps of producing a hardenable copper alloy containing by weight, 0.1% to 0.5% beryllium, 0.5% to 2% nickel which, together with a copper component, amount to at least 99.5%, and maximum 0.5% of impurities; and forming the broad side plates of the hardenable copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/078,006 US20050158204A1 (en) | 2000-04-14 | 2005-03-11 | Method of production of broadside plates for continuous casting molds |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10018504A DE10018504A1 (en) | 2000-04-14 | 2000-04-14 | Use of a hardenable copper alloy containing beryllium and nickel for molds for producing plates for thin slab continuous casting molds |
| DE10018504.5 | 2000-04-14 | ||
| US10/257,512 US20030165396A1 (en) | 2000-04-14 | 2001-04-12 | Use of a hardenable copper alloy for molds |
| PCT/EP2001/004235 WO2001079574A1 (en) | 2000-04-14 | 2001-04-12 | Use of a hardenable copper alloy for molds |
| US11/078,006 US20050158204A1 (en) | 2000-04-14 | 2005-03-11 | Method of production of broadside plates for continuous casting molds |
Related Parent Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2001/004235 Division WO2001079574A1 (en) | 2000-04-14 | 2001-04-12 | Use of a hardenable copper alloy for molds |
| US10/257,512 Division US20030165396A1 (en) | 2000-04-14 | 2001-04-12 | Use of a hardenable copper alloy for molds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20050158204A1 true US20050158204A1 (en) | 2005-07-21 |
Family
ID=7638729
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/257,512 Abandoned US20030165396A1 (en) | 2000-04-14 | 2001-04-12 | Use of a hardenable copper alloy for molds |
| US11/078,006 Abandoned US20050158204A1 (en) | 2000-04-14 | 2005-03-11 | Method of production of broadside plates for continuous casting molds |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/257,512 Abandoned US20030165396A1 (en) | 2000-04-14 | 2001-04-12 | Use of a hardenable copper alloy for molds |
Country Status (10)
| Country | Link |
|---|---|
| US (2) | US20030165396A1 (en) |
| EP (1) | EP1274871A1 (en) |
| JP (1) | JP2003531290A (en) |
| KR (1) | KR20020091154A (en) |
| CN (1) | CN1423707A (en) |
| DE (1) | DE10018504A1 (en) |
| EG (1) | EG22980A (en) |
| RU (1) | RU2260493C2 (en) |
| TW (1) | TW524864B (en) |
| WO (1) | WO2001079574A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW590822B (en) * | 2001-11-21 | 2004-06-11 | Km Europa Metal Ag | Casting-roller for a two-roller-casting equipment and its manufacturing method |
| DE10156925A1 (en) * | 2001-11-21 | 2003-05-28 | Km Europa Metal Ag | Hardenable copper alloy as a material for the production of casting molds |
| US7225856B2 (en) * | 2002-08-02 | 2007-06-05 | Hildreth Manufacturing, Llc | Precipitation-hardenable alloy core rod, plunger tip having a uniform side wall thickness, and method of forming same |
| DE102009037283A1 (en) * | 2009-08-14 | 2011-02-17 | Kme Germany Ag & Co. Kg | mold |
| CN110218903B (en) * | 2019-07-02 | 2020-07-14 | 西峡龙成特种材料有限公司 | ESP continuous casting crystallizer narrow-surface copper plate base metal and machining method thereof, and ESP continuous casting crystallizer narrow-surface copper plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6083328A (en) * | 1991-12-24 | 2000-07-04 | Km Europa Metal Ag | Casting rolls made of hardenable copper alloy |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377424A (en) * | 1980-05-26 | 1983-03-22 | Chuetsu Metal Works Co., Ltd. | Mold of precipitation hardenable copper alloy for continuous casting mold |
| DE3109438A1 (en) * | 1981-03-12 | 1982-09-30 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | "METHOD FOR THE PRODUCTION OF TUBULAR, STRAIGHT OR CURVED CONTINUOUS CASTING CHILLS WITH PARALLELS OR CONICAL INTERIOR CONTOURS FROM CURABLE copper ALLOYS" |
| US4421570A (en) * | 1982-03-12 | 1983-12-20 | Kabel Und Metallwerke Gutehoffnungshutte Ag | Making molds for continuous casting |
| JPH02111835A (en) * | 1988-10-20 | 1990-04-24 | Chuetsu Gokin Chuko Kk | Mold material for electromagnetic stirring |
| JP2869076B2 (en) * | 1988-12-19 | 1999-03-10 | 中越合金鋳工株式会社 | Precipitation hardening mold material for continuous casting |
| EP0725157B1 (en) * | 1995-02-01 | 2001-03-07 | BRUSH WELLMAN Inc. | Processing of alloys and products so produced |
| WO1996027600A1 (en) * | 1995-03-07 | 1996-09-12 | Asahi Kasei Kogyo Kabushiki Kaisha | Flame-retardant resin composition |
-
2000
- 2000-04-14 DE DE10018504A patent/DE10018504A1/en not_active Withdrawn
-
2001
- 2001-04-06 TW TW090108247A patent/TW524864B/en not_active IP Right Cessation
- 2001-04-11 EG EG20010361A patent/EG22980A/en active
- 2001-04-12 CN CN01808026A patent/CN1423707A/en active Pending
- 2001-04-12 US US10/257,512 patent/US20030165396A1/en not_active Abandoned
- 2001-04-12 WO PCT/EP2001/004235 patent/WO2001079574A1/en not_active Application Discontinuation
- 2001-04-12 KR KR1020027012659A patent/KR20020091154A/en not_active Application Discontinuation
- 2001-04-12 RU RU2002130502/02A patent/RU2260493C2/en not_active IP Right Cessation
- 2001-04-12 EP EP01929554A patent/EP1274871A1/en not_active Ceased
- 2001-04-12 JP JP2001576957A patent/JP2003531290A/en not_active Withdrawn
-
2005
- 2005-03-11 US US11/078,006 patent/US20050158204A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6083328A (en) * | 1991-12-24 | 2000-07-04 | Km Europa Metal Ag | Casting rolls made of hardenable copper alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1274871A1 (en) | 2003-01-15 |
| DE10018504A1 (en) | 2001-10-18 |
| KR20020091154A (en) | 2002-12-05 |
| CN1423707A (en) | 2003-06-11 |
| US20030165396A1 (en) | 2003-09-04 |
| EG22980A (en) | 2003-12-31 |
| JP2003531290A (en) | 2003-10-21 |
| WO2001079574A1 (en) | 2001-10-25 |
| RU2260493C2 (en) | 2005-09-20 |
| TW524864B (en) | 2003-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |