US3170204A - Mold for the continuous casting of high-melting metals - Google Patents
Mold for the continuous casting of high-melting metals Download PDFInfo
- Publication number
- US3170204A US3170204A US90561A US9056161A US3170204A US 3170204 A US3170204 A US 3170204A US 90561 A US90561 A US 90561A US 9056161 A US9056161 A US 9056161A US 3170204 A US3170204 A US 3170204A
- Authority
- US
- United States
- Prior art keywords
- mold
- copper
- continuous casting
- level
- molds
- 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 - Lifetime
Links
Images
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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12903—Cu-base component
- Y10T428/1291—Next to Co-, Cu-, or Ni-base component
Definitions
- integral and composite molds there are integral and composite molds.
- The, composite molds are composed of plates whereas the integral molds consist of a prismatic or cylindnical tube.
- the cooling arrangement there are molds formed with cooling bores, and other surrounded by a water jacket.
- the wall thickness there are thin-walled molds,..the wall thickness of which is only sufficient for the mechanical stresses to be expected which differ with the shape and sizeof the cross-section;
- Suitable alloying additions to the copper include mainly chromium, silicon, silver and beryllium. The amount of each of these materials should suitably not exceed 3%.
- Such alloys known per se consist preferably of l-2% Cr, with or without O.ll% Si, balance copper and impurities which are inevitable in the manufacturing process.
- the precipitation-hardening treatment of these known alloys with, e.g.,' 1.5% Cr is effected by a solution annealing at about 1000 C. followed by quenching in water and reheating for one to four hours at temperatures between 350 and 600 0., preferably by reheatingfor two 7 hours at 400C.
- the precipitation-hardening treatment is suitably effected after the welding operation.
- Molds according to the invention may consist partly or entirely of precipitation-hardened copper alloys.
- Integral molds which are in most cases subject to very lugh stresses, consist in condition ready for installation preferably entirely of a precipitation-hardened copper alloy owing to the simpler manufacture.
- the durability of a mold for continuous casting is essential for its usefulness.
- the durability may be expressed r this reason, the molds employed in existing continuous
- the high thermal" loading of the mold for continuous casting results in high stresses being set up in the mold wall as a result of thermal expansion, In continuous operati-on, these stresses result in deformation, which adversely affects the contact between the skin of the billet and the mold and consequently reduce the dissipation of heat.
- the drawing shows a mold for continuous casting.
- the mold 1 consisting of the alloy according to the invention is provided at both ends with flanges 2m 3, the
- the mold 1 surrounded by a jacket 4, which serves to receive the cooling Water for cooling the wall of the mold and causing the solidification of the melt poured into the mold to the level L indicated by a broken line.
- a mold forthe continuous casting of metals said ,mold consisting of a precipitation hardened copper alloy at the level of molten material, said alloy consisting essentially of about 1% to2% chromium, incidential impurities and the balance being copperjand copper metal in the other level.
- a mold for the continuous casting of metals consisting of a precipitation hardened copper alloy at the level of molten material, said alloy consisting essent1al ly.of about 1% to 2% chromium, 0.1% to 1% silicon;
- a mold for the continuous casting of metals said 2'944309 7/60 Schaaber 22-136 XR mold consisting of a precipitation hardened copper alloy at least at the level of molten material, said alloy consist- MICHAEL BRINDISI" Primary Examiner ing essentially of about 1% to 2% chromium, 0.1% to MARCUS U. LYONS, RAY K. WINDHAM, NEDWIN 1% silicon, incidental impurities and the balance 'being 10 BERGER, Examiners. copper.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
Feb. 23, 1965 a. TARMANN 3,170,204
MOLD FOR THE commuous CASTING 0F HIGH-MELTING METALS Filed Feb. 20. 1961 r 3,170,204" MOLD non THE CONTINUOUS CASTING or HIGH-MELTING METALS Bruno Tarmann, Styria, Austria,-assignor to'Gebr. Biihler & Co. '-Aktiengesellschaft, Vienna, Austria Filed Feb. 20, 1961, Ser. No.'90,561 Claims priority, application Austria, FehJZS, 1960,
4 Claims. (31. 22 -136) v of adequate thermal conductivity, copper is a material suitable in the that placefor making the mold, and other materials will only be used when required for special reasons, leg, when the material cast in the mold is to be "subjected to electric induction.
In such cases, a lower If United States Patent 3,170,204 Patented Feb. 2 3, r 1965 I Surprisingly, however, it has'been found that the unde- I sired deformation in the neighborhood of the level of the thermal conductivity of the mold material must be accepted.
Regarding structure, there are integral and composite molds. The, composite molds are composed of plates whereas the integral molds consist of a prismatic or cylindnical tube. With respect to the cooling arrangement there are molds formed with cooling bores, and other surrounded by a water jacket. Regarding the wall thickness, there are thin-walled molds,..the wall thickness of which is only sufficient for the mechanical stresses to be expected which differ with the shape and sizeof the cross-section;
advantages of a thin-walled surface of thecast material can be avoided to a high degree if precipitation-hardened copper alloysare used which consist of more than 85% copper and at least one allo i velement which enables precipitation hardening.
It was not foreseeable that success could be obtained. in the present case by a measure which will necessarily reduce the thermal conductivity of copper.
Suitable alloying additions to the copper include mainly chromium, silicon, silver and beryllium. The amount of each of these materials should suitably not exceed 3%.
Such alloys known per se consist preferably of l-2% Cr, with or without O.ll% Si, balance copper and impurities which are inevitable in the manufacturing process.
It is essential for the invention that the alloys which are recommended and known per so are used in a precipitation-hardened condition becausoohly in this condition is the thermalconductivity not substantially less than that of pure copper whereas .=the'yields point at elevated temperature and the creep stress are much higher than the corresponding values for pure copper.
The precipitation-hardening treatment of these known alloys with, e.g.,' 1.5% Cr is effected by a solution annealing at about 1000 C. followed by quenching in water and reheating for one to four hours at temperatures between 350 and 600 0., preferably by reheatingfor two 7 hours at 400C. a
When welding operations are required during the manufacture of the mold, the precipitation-hardening treatment is suitably effected after the welding operation.
Molds according to the invention may consist partly or entirely of precipitation-hardened copper alloys.
Integral molds, which are in most cases subject to very lugh stresses, consist in condition ready for installation preferably entirely of a precipitation-hardened copper alloy owing to the simpler manufacture. a I
- On the other hand, it may be suitable in'the case 0 composite molds composed of plates to use the precipita tion-hardenable copper alloys onlyin the region where highstresses occur, mainly adjacent to the surface of the pouring rate andthe kind of steel to be poured; For
casting plants vary within a wide range. V I
The durability of a mold for continuous casting is essential for its usefulness. The durability may be expressed r this reason, the molds employed in existing continuous The high thermal" loading of the mold for continuous casting results in high stresses being set up in the mold wall as a result of thermal expansion, In continuous operati-on, these stresses result in deformation, which adversely affects the contact between the skin of the billet and the mold and consequently reduce the dissipation of heat.
- When the deformation has reached such :a degree that the formation of the skin is disturbed owing to anunsufiicient dissipation of heat, thebillet willshow surface cracks and the durability of the mold is exhausted.
It has now been observed that these undesired deforma- .rtions occur main-lyin the neighborhood of the level of the molten material. This levelnaries in the mold within a mange which can amount to :30 mm. evenyin a carefully controlled casting operation. It has also been observed that the molds are more liable to besubjected-to defiormation adjacent to the surfiace ofthe cast materialas desirable to provide a mold material havinga thermal conductivitywhich is higher than that of copper, if pos- .sible.' 1 r V the molten material. In that case the other parts of the mold consist of pure copper, as before. 1
The durability of molds for continuous casting according to the inventionis under comparable conditions in all previously observed cases a multiple of that of usual copper molds. 1
The subject matter of the invention will be described 7 i more in detail with reference to an illustrative embodiment. The drawing shows a mold for continuous casting. The mold 1 consisting of the alloy according to the invention is provided at both ends with flanges 2m 3, the
material of which need not consist of the alloy according to the invention but must be capable of being joined to the body of the mold without a gap." Besides, the mold 1s surrounded by a jacket 4, which serves to receive the cooling Water for cooling the wall of the mold and causing the solidification of the melt poured into the mold to the level L indicated by a broken line.
What is claimed is:
l. A mold forthe continuous casting of metals, said ,mold consisting of a precipitation hardened copper alloy at the level of molten material, said alloy consisting essentially of about 1% to2% chromium, incidential impurities and the balance being copperjand copper metal in the other level. V
2. A mold for the continuous casting of metals, said mold consisting of a precipitation hardened copper alloy at the level of molten material, said alloy consisting essent1al ly.of about 1% to 2% chromium, 0.1% to 1% silicon;
incidental impurities and the balance being copper; and
copper metal in the other level.
3. mold for the continuous casting of metals, said References Cited by the Examiner mold consisting of a precipitation hardened copper alloy UNITED STATES PATENTS at least at the level of molten material, said alloy consisting essentially of about 1% to 2% chromium, incidental 2'192497 3/40 Hessenbmch 75-.160 e 2,547,129 4/51 Klement 75153 XR impurities and the balance being copper. 4 5 n 4. A mold for the continuous casting of metals, said 2'944309 7/60 Schaaber 22-136 XR mold consisting of a precipitation hardened copper alloy at least at the level of molten material, said alloy consist- MICHAEL BRINDISI" Primary Examiner ing essentially of about 1% to 2% chromium, 0.1% to MARCUS U. LYONS, RAY K. WINDHAM, NEDWIN 1% silicon, incidental impurities and the balance 'being 10 BERGER, Examiners. copper.
Claims (1)
1. A MOLD FOR THE CONTINUOUS CASTING OF METALS, SAID MOLD CONSISTING OF A PRECIPITATION HARDENED COPPER ALLOY AT THE LEVEL OF MOLTEN MATERIAL, SAID ALLOY CONSISTING ESSENTIALLY OF ABOUT 1% TO 2% CHROMIUM, INCIDENTIAL IMPURITIES AND THE BALANCE BEING COPPER; AND COPPER METAL IN THE OTHER LEVEL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT144860A AT234930B (en) | 1960-02-25 | 1960-02-25 | Continuous casting molds for the continuous casting of refractory metals such as iron and steel, which essentially consist of copper |
Publications (1)
Publication Number | Publication Date |
---|---|
US3170204A true US3170204A (en) | 1965-02-23 |
Family
ID=3514106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US90561A Expired - Lifetime US3170204A (en) | 1960-02-25 | 1961-02-20 | Mold for the continuous casting of high-melting metals |
Country Status (9)
Country | Link |
---|---|
US (1) | US3170204A (en) |
AT (1) | AT234930B (en) |
BE (1) | BE600544A (en) |
CH (1) | CH407420A (en) |
DK (1) | DK108337C (en) |
FR (1) | FR1280455A (en) |
GB (1) | GB906227A (en) |
LU (1) | LU39777A1 (en) |
SE (1) | SE309654B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1282812B (en) * | 1967-02-20 | 1968-11-14 | Lokomotivbau Elektrotech | Crystallizer for strand melting in electron beam ovens |
US3527287A (en) * | 1967-11-14 | 1970-09-08 | Concast Inc | Continuous-casting mold assembly |
US3988176A (en) * | 1973-08-04 | 1976-10-26 | Hitachi Shipbuilding And Engineering Co., Ltd. | Alloy for mold |
US4031949A (en) * | 1975-04-28 | 1977-06-28 | Piero Colombo | Water cooled mold for the continuous casting of metals |
US4377424A (en) * | 1980-05-26 | 1983-03-22 | Chuetsu Metal Works Co., Ltd. | Mold of precipitation hardenable copper alloy for continuous casting mold |
US4421570A (en) * | 1982-03-12 | 1983-12-20 | Kabel Und Metallwerke Gutehoffnungshutte Ag | Making molds for continuous casting |
US4518027A (en) * | 1980-03-29 | 1985-05-21 | Kabushiki Kaisha Kobe Seiko Sho | Mold adapted to house electromagnetic stirrer coil for continuous casting equipment |
US4589930A (en) * | 1983-03-02 | 1986-05-20 | Hitachi, Ltd. | Casting metal mold and method of producing the same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2634633C2 (en) * | 1976-07-31 | 1984-07-05 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | Continuous casting mold made of a copper material, especially for continuous casting of steel |
DE3760850D1 (en) * | 1986-06-20 | 1989-11-30 | Kabelmetal Ag | Using a copper alloy |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2192497A (en) * | 1939-03-13 | 1940-03-05 | Heraeus Vacuumschmelze Ag | Beryllium-copper alloys |
US2547129A (en) * | 1946-04-29 | 1951-04-03 | Ampco Metal Inc | Copper base alloy |
US2944309A (en) * | 1953-09-04 | 1960-07-12 | Schaaber Otto | Rotary field chill-mold |
-
1960
- 1960-02-25 AT AT144860A patent/AT234930B/en active
-
1961
- 1961-02-13 CH CH169661A patent/CH407420A/en unknown
- 1961-02-14 GB GB5396/61A patent/GB906227A/en not_active Expired
- 1961-02-15 LU LU39777D patent/LU39777A1/xx unknown
- 1961-02-17 SE SE1677/61A patent/SE309654B/xx unknown
- 1961-02-18 FR FR853205A patent/FR1280455A/en not_active Expired
- 1961-02-20 US US90561A patent/US3170204A/en not_active Expired - Lifetime
- 1961-02-23 DK DK77861AA patent/DK108337C/en active
- 1961-02-23 BE BE600544A patent/BE600544A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2192497A (en) * | 1939-03-13 | 1940-03-05 | Heraeus Vacuumschmelze Ag | Beryllium-copper alloys |
US2547129A (en) * | 1946-04-29 | 1951-04-03 | Ampco Metal Inc | Copper base alloy |
US2944309A (en) * | 1953-09-04 | 1960-07-12 | Schaaber Otto | Rotary field chill-mold |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1282812B (en) * | 1967-02-20 | 1968-11-14 | Lokomotivbau Elektrotech | Crystallizer for strand melting in electron beam ovens |
US3527287A (en) * | 1967-11-14 | 1970-09-08 | Concast Inc | Continuous-casting mold assembly |
US3988176A (en) * | 1973-08-04 | 1976-10-26 | Hitachi Shipbuilding And Engineering Co., Ltd. | Alloy for mold |
US4031949A (en) * | 1975-04-28 | 1977-06-28 | Piero Colombo | Water cooled mold for the continuous casting of metals |
US4518027A (en) * | 1980-03-29 | 1985-05-21 | Kabushiki Kaisha Kobe Seiko Sho | Mold adapted to house electromagnetic stirrer coil for continuous casting equipment |
US4377424A (en) * | 1980-05-26 | 1983-03-22 | Chuetsu Metal Works Co., Ltd. | Mold of precipitation hardenable copper alloy for continuous casting mold |
US4421570A (en) * | 1982-03-12 | 1983-12-20 | Kabel Und Metallwerke Gutehoffnungshutte Ag | Making molds for continuous casting |
US4589930A (en) * | 1983-03-02 | 1986-05-20 | Hitachi, Ltd. | Casting metal mold and method of producing the same |
Also Published As
Publication number | Publication date |
---|---|
FR1280455A (en) | 1961-12-29 |
BE600544A (en) | 1961-06-16 |
CH407420A (en) | 1966-02-15 |
SE309654B (en) | 1969-03-31 |
AT234930B (en) | 1964-07-27 |
GB906227A (en) | 1962-09-19 |
LU39777A1 (en) | 1961-04-15 |
DK108337C (en) | 1967-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3170204A (en) | Mold for the continuous casting of high-melting metals | |
US3522112A (en) | Process for treating copper base alloy | |
US6083328A (en) | Casting rolls made of hardenable copper alloy | |
US4377424A (en) | Mold of precipitation hardenable copper alloy for continuous casting mold | |
US2944309A (en) | Rotary field chill-mold | |
US1556776A (en) | Material for resisting oxidation at high temperatures | |
US3639119A (en) | Copper base alloy | |
JP2021531412A (en) | Use of copper alloy | |
US2189198A (en) | Copper-titanium alloy | |
KR960001714B1 (en) | Method of casting and mold making | |
US2829410A (en) | Ingot mold | |
JPS6141973B2 (en) | ||
JPH03218937A (en) | Press bending of glass pane | |
JPS62182238A (en) | Cu alloy for continuous casting mold | |
US2759230A (en) | Ingot molds provided with a hot-top | |
FI60820C (en) | ANVAENDNING AV EN KOPPARLEGERING FOER STRAENGGJUTKOKILLER | |
KR920007884B1 (en) | Copper alloy and a process for the production of a continous casting mould by this copper alloy | |
US3254990A (en) | Iron silicon alloys | |
US1939628A (en) | Method of making composite metal body | |
JPS6058772B2 (en) | Mold material for continuous casting | |
US2339842A (en) | Casting copper chromium steel | |
JPH08253830A (en) | Production of single-crystal ni-base alloy casting having high single-crystallization ratio | |
SU644595A1 (en) | Investment core | |
US3661568A (en) | Copper base alloy | |
US3550671A (en) | Steel making practice |