GB2203975A - Casting mould - Google Patents
Casting mould Download PDFInfo
- Publication number
- GB2203975A GB2203975A GB08812733A GB8812733A GB2203975A GB 2203975 A GB2203975 A GB 2203975A GB 08812733 A GB08812733 A GB 08812733A GB 8812733 A GB8812733 A GB 8812733A GB 2203975 A GB2203975 A GB 2203975A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- mould
- ribs
- copper
- steel
- 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
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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Arc Welding In General (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A casting mould comprises a sleeve (1) provided with stiffening ribs (2) and a steel envelope (3) oriented coaxially to the sleeve (1) and forming, together with the latter, a cooling cavity (4) divided by the stiffening ribs (2) into channels (5), whereas the sleeve (1) is bimetallic and its external layer (6) is made of steel and its thickness is 0.1-0.3 of the height of the stiffening rib (2).
Description
MOULD Technical Field
The invention relates to metallurgy and has specific reference to moulds,
Background of the Invention
There is known a mould (cf. B.I.Medovar et al."Elec troshlakovie pechi", "Naukova dumka", Xiev, 1976, p. 91 (in Bussian) ) for remelting processes comprising a tube mude of copper or copper-base alloy and a steel shell disposed coaxially with the tube and forming a cooling jacket therewith. The steel shell is connected to the tube by means of bolts.
The known mould has a short service life, for its copper tube lacks aaequate stiffness and deforms under high thermal stresses which are brought about by a tern- perature gradient in the tube wall as high as 5 to 1OoC/mm.
This, in its turn, causes high-temperature stresses in the wall and, hence, its deformation. The conditions under which the remelting moulds are bound to operate call for strengthening the mould structure.
Also known is a mould (US Patent No. 389901?, IPC
B22 D 27/02, published 12.08.75, Associated electrical
Industries Limited, London) the copper tube whereof with reinforcing ribs is contained in a coaxial steel shell forming a cooling jacket The ribs forming a number of passages in the jacket are attached each through the lingth of one side, e.g. by brazing to the outer side of the tube , whereas the other side thereof is bolted to the steel shell.
The copper tube of the known mould also cannot resist the thermal stresses in its wall and deforms consequently, rendering the mould inoperative before long. The vertical ribs brazed to the wall of the copper tube are of no avail in thise case, for no brazing can prevent ribs from being torn off the tube.
A heavily deformed tube invites difficulty in withdrawing the ingot therefrom and renders further operation of themould problematic.
Disclosure of the Invention
The main object of the present invention is to provide a mould of modified design which would stiffen the mould and prolong its service life.
The object of the invention is realized by providing a mould comprising a ttibe b 1t reinforcing ribs, and steel shell disposed coaxially with the tube and forming therewith a cooling jacket separated by the ribs into passages wherein according to the invention the tube is a bimetallic one the outward steel layer whereof is of a thickness equalling 0.1-0.3 time the height of a rib.
It is preferable to have inner layer of the tube made of copper.
The inherently stiff tube as described hereinabove adds to the reliability of the mould and extends its service life. The steel-backed copper layer of the tube can be of minimum thickness so that a saving in non-ferrous metals (copper, chromium bronze) which are in short supply is obtainable.
Brief Description of the Drawings
A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which
Figure 1 is a sectional elevation of a mould according to the invention;
Figure 2 is a horizontal section on the line II-II of
Fig. 1, according to the invention
Best Mode for Carrying Out the Invention
The mould contains a tube 1 (Figs 1, 2) having reinforcing ribs 2 to which is welded a steel shell 3 located coaxially with the tube 1 and forming with the tube 1 a cooling jack- 4. The cooling jacket 4 is separated by the reinforcing ribs 2 into passages 5 for circulating a cooling agent. The pipe 1 is of the bimetallic construction and contains an outside steel layer 6 and an internal layer 7 being a working one and made of copper or chromium bronze.The outside layer 6 is a single whole with the ribs 2 and has a thickness of 0.1-0.3 time the height of a rib 2. The cooling agent is admitted into the jacket 4 over pipes 8 and discharged therefrom over pipes 9. Consumable electrodes 10 are melted in a slag batch 11 and an ingot 12 is formed in the tube 1.
The outside layer of the bimetallic tube of a thicness less than 0.1 the height of a rib cannot make for an adequate stiffness of the tube and with a thickness of this layer greater than 0.3 the height of a rib causes an increase in the thermal resistance of the outside layer in excess of the thermal resistance of the inside layer and this leads to overheating of the tube and an increase in the rate of its erosion.
The mould operates as follows,
The mould is mounted on a stool (not shown). The cooling agent is admitted into the passages 5 through the pipes 8 and discharged therefrom though the pipes 9.
A slag bath 11 is set up at the bottom of the tube 1 mounted on the stool and the consumable electrode 10 is lowered into the bath. A voltage applied across the slag bath 11 and the consumable electrode 10 heats up the electrode and causes it to melt. Molten metal passes through the slag bath 11 and solidifies into the ingot 12 in the lower end of the tube 1.
The process of electroslag remelting imposes thermal loads as high as 0.5.106 to 1.5.106 W/m2 on components of the mould. The resulting high thermal stresses set up in the wall of the tube 1 may cause irrecoverable deformations. The outside steel layer 6 of the bimetallic tubel significantly stiffens the structure and improves the reliability of the mould. The bimetallic construction of the tube 1 is conducive to reducing the thickness of its internal working layer without impairing the overall stiffness of the mould and to reducing the requirements in copper and also the erosion of the tube 1 is lessened.
All in all, the reliability of the mould - a key compo event of any remelting arrangement - is significantly increased.
Industrial Applicability
The present invention can be applied for remelting processes: electro-slag, vacuum - arc, electro-arc, electron-beam. The present day remelting technology involving formation of solid and hollow ingots, shaped castings from various steel grades, nonferrous and refractory metals can find application in many industrial engineerings.
Claims (2)
1. A mould comprising a tube (1) having reinforing ribs ( 2) and a steel shell (3) disposed coaxially with the tube (1) and forming therewith a cooling jacket (4) separated by the ribs (2) into passages (5) c h a r a c t e r i z e d in that the tube (1) is a bimetallic one an outward steel layer (6) whereof is of a thickness equalling 0.1-0.3 time the height of the reinforcing rib (2).
2. A mould as claimed in claim 1, c h a r a c t e r i z e d in that an inner layer (7) of the tube (1) is made of copper.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SU1986/000106 WO1988003177A1 (en) | 1986-10-24 | 1986-10-24 | Casting mould |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8812733D0 GB8812733D0 (en) | 1988-07-20 |
GB2203975A true GB2203975A (en) | 1988-11-02 |
GB2203975B GB2203975B (en) | 1990-06-13 |
Family
ID=21617048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8812733A Expired - Fee Related GB2203975B (en) | 1986-10-24 | 1986-10-24 | Casting mould |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPH0248345B2 (en) |
DE (2) | DE3690795T1 (en) |
FR (1) | FR2606128B1 (en) |
GB (1) | GB2203975B (en) |
SE (1) | SE461915B (en) |
WO (1) | WO1988003177A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103341598A (en) * | 2013-07-19 | 2013-10-09 | 烟台孚信达双金属股份有限公司 | Crystallizer for casting of copper-clad aluminum composite materials |
CN109894585A (en) * | 2019-04-29 | 2019-06-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Casting tube type crystallizer |
CN110039013A (en) * | 2019-04-29 | 2019-07-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Small deformation casting tube type crystallizer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3129473A (en) * | 1960-11-09 | 1964-04-21 | Carpenter Steel Co | Through-plug mold stool |
US3804150A (en) * | 1971-03-18 | 1974-04-16 | B Paton | Apparatus for electroslag remelting |
SU358940A1 (en) * | 1970-07-20 | 1980-06-05 | Институт Электросварки Им.Е.О. Патона | Crystallizer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1489307A (en) * | 1966-08-05 | 1967-07-21 | Demag Ag | Shell for casting for extrusion of metal, especially steel |
FR1517355A (en) * | 1967-03-31 | 1968-03-15 | Lokomotivbau Elektrotech | Continuous casting crystallizer for electron radiation furnaces |
GB1421908A (en) * | 1972-08-25 | 1976-01-21 | Ass Elect Ind | Electroslag moulds |
DE2824821A1 (en) * | 1977-06-06 | 1978-12-07 | Gerhard Fuchs | MELTING FURNACES, IN PARTICULAR ARC MELTING FURNACES |
DE2924860C2 (en) * | 1979-06-20 | 1984-10-31 | Fuchs Systemtechnik GmbH, 7601 Willstätt | Metallurgical furnace, in particular electric arc furnace |
-
1986
- 1986-10-24 DE DE19863690795 patent/DE3690795T1/de active Pending
- 1986-10-24 GB GB8812733A patent/GB2203975B/en not_active Expired - Fee Related
- 1986-10-24 WO PCT/SU1986/000106 patent/WO1988003177A1/en active Application Filing
- 1986-10-24 DE DE19863690795 patent/DE3690795C2/en not_active Expired - Lifetime
- 1986-10-24 JP JP50032787A patent/JPH0248345B2/en not_active Expired - Lifetime
- 1986-10-31 FR FR8615230A patent/FR2606128B1/en not_active Expired
-
1988
- 1988-06-17 SE SE8802285A patent/SE461915B/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3129473A (en) * | 1960-11-09 | 1964-04-21 | Carpenter Steel Co | Through-plug mold stool |
SU358940A1 (en) * | 1970-07-20 | 1980-06-05 | Институт Электросварки Им.Е.О. Патона | Crystallizer |
US3804150A (en) * | 1971-03-18 | 1974-04-16 | B Paton | Apparatus for electroslag remelting |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103341598A (en) * | 2013-07-19 | 2013-10-09 | 烟台孚信达双金属股份有限公司 | Crystallizer for casting of copper-clad aluminum composite materials |
CN109894585A (en) * | 2019-04-29 | 2019-06-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Casting tube type crystallizer |
CN110039013A (en) * | 2019-04-29 | 2019-07-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Small deformation casting tube type crystallizer |
CN110039013B (en) * | 2019-04-29 | 2021-01-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Small deformation continuous casting pipe type crystallizer |
Also Published As
Publication number | Publication date |
---|---|
GB8812733D0 (en) | 1988-07-20 |
WO1988003177A1 (en) | 1988-05-05 |
FR2606128B1 (en) | 1989-02-03 |
FR2606128A1 (en) | 1988-05-06 |
SE8802285L (en) | 1988-06-17 |
SE461915B (en) | 1990-04-09 |
JPH0248345B2 (en) | 1990-10-24 |
DE3690795C2 (en) | 1990-03-08 |
GB2203975B (en) | 1990-06-13 |
DE3690795T1 (en) | 1988-10-06 |
JPH01500976A (en) | 1989-04-06 |
SE8802285D0 (en) | 1988-06-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3539706B2 (en) | Chill mold and metal remelting method using the same | |
GB1242351A (en) | Process and apparatus for purifying metals by submerged arc casting | |
US5799721A (en) | Method of remelting metals to form an elongate portion and apparatus therefor | |
CA1118056A (en) | Method for electroslag welding of metals | |
GB2203975A (en) | Casting mould | |
US4055215A (en) | Hot-top for the production of ingots using an electroslag remelting process | |
JPH06263B2 (en) | Continuous casting method | |
US4612649A (en) | Process for refining metal | |
US3603374A (en) | Methods of producing large steel ingots | |
JPS60254592A (en) | Dc arc heater | |
CN109883206B (en) | High-speed cooling device for smelting of vacuum consumable furnace | |
JP2002086251A (en) | Method for continuously casting alloy | |
US3696859A (en) | Production of large steel ingots with consumable vacuum arc hot tops | |
JPH0639635B2 (en) | Electroslag remelting method for copper and copper alloys | |
EP0457502B1 (en) | Method and apparatus for precision casting | |
US3516476A (en) | Electrode and method of improving soundness of ingots | |
JPS6427749A (en) | Method for continuous casting of metal | |
CN219112834U (en) | Split riser die | |
JPH01500408A (en) | template | |
JP3995597B2 (en) | Plasma torch used for molten steel heating | |
CN106862537B (en) | Goose neck electroslag smelting casting process and crystallizer manufacturing process | |
US4783790A (en) | Direct-current arc furnace for steelmaking | |
JPH0931558A (en) | Vacuum arc remelting method | |
JP2008178908A (en) | Process for electroslag remelting of metal and ingot mold used therefor | |
US3656535A (en) | Consumable electrode melting using a centrifugal cast electrode |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19921024 |