CN1067197A - Form metal works by motlten metal - Google Patents
Form metal works by motlten metal Download PDFInfo
- Publication number
- CN1067197A CN1067197A CN 92104260 CN92104260A CN1067197A CN 1067197 A CN1067197 A CN 1067197A CN 92104260 CN92104260 CN 92104260 CN 92104260 A CN92104260 A CN 92104260A CN 1067197 A CN1067197 A CN 1067197A
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- CN
- China
- Prior art keywords
- roller
- metal
- tin
- aluminum
- alloy
- 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.)
- Pending
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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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Be included in the measure that the metal or alloy such as tin or ashbury metal is provided on the surface of at least one cooling body that motlten metal meshed of moulding in order to the method and apparatus that forms metal works.This method and equipment are particularly suitable for the aluminium of fusion.In the double roller casting machine, form one deck tin coating before casting or in during the casting on the periphery at each roller.
Description
The present invention relates to form metal works, wherein motlten metal is poured in the formed body of at least one cooling by motlten metal.A kind of concrete but not exclusive application of the present invention is the tape with double roller casting method casting aluminum or aluminum alloy.The implication of " aluminium " this speech that this specification hereinafter uses comprises aluminium alloy.
One of problems that run in these technical process are exactly that workpiece may be bonded on each formed body, although workpiece can be taken away, the bright and clean of surface of the work is damaged.If workpiece can not be taken away easily, then this technical process has to stop.
In the effort that reduces bonding, constantly smear lubricant on the body toward being cooled to of each casting film or roller form, this is known.Utilizing the double roller casting machine to carry out in the technical process of pouring operation, two prevailing lubricants are the emulsion of the colloidal graphite in the water or the emulsion of magnesium hydroxide.Emulsion is sprayed on the roller of hot casting machine, must carefully prevent that too much liquid is in roller inflow on every side and the contacted roll gap of motlten metal district.Importantly, sprinkling is smeared and is wanted evenly, because the irregular casting defect that can produce other of smearing, even and have found that emulsion be sprayed at the phenomenon that still can bond on the roller, especially in the casting thin strip, normally less than 6 millimeters tape in.
Workpiece be bonded in can occur in especially on the formed body that process begins during and in one period short time thereafter.In case this process begins to carry out, do not cause workpiece to be bonded in a formed body if in this process, have the sudden change such as operating temperature, phenomenon just can not bond.
One of the object of the invention will reduce is exactly making the chance that bonding during starts takes place suddenly the workpiece process with motlten metal.Many steps of taking for the meeting of minimizing cementing machine can make its termination when starting has suddenly taken place, that is to say that these steps are used in running through this manufacture process serially.
According to a first aspect of the invention, a kind of method that forms metal works is motlten metal to be injected be engaged at least one chilled or body, the surface of this that is melted that metal meshes or each formed body contacts with the low-melting metal or alloy of a kind of its fusing point than this motlten metal, to alleviate the bonding between solid metallic workpiece and the formed body.
This formed body is made up of the roller of two rotations easily, and motlten metal injects the roll gap between two rollers.
When motlten metal was aluminium, above-mentioned metal preferably used the alloy of tin or tin.The melting degree of the alloy of tin and stanniferous in aluminium is very limited, so tin or ashbury metal can be added in the molten aluminum.This metal or or the amount of alloy very little, be lower than 0.1%, therefore the alloy of being cast is still in the normal components limit.Because its limited solubility, so tin forms one deck pellicle on aluminium, and this film just is present between aluminium and two rollers when casting begins.
In another embodiment of the present invention, before casting, the face coat of one deck tin or ashbury metal is provided just for two rollers.This coating must periodically be changed.This carries out later between casting or at casting one scheduled volume.
In another embodiment of the present invention, at least in this process suddenly during starts, tin or ashbury metal will be provided at each roller and molten aluminum with the form of one deck coating on that piece circumferential surface part that is meshed before engagement.
Turbid shape body of glass putty or tin or ashbury metal or tin compound can be sprayed on the roller during casting.Using tin compound for example when stannous oxide or stannous chloride, it and heated roller work, formation one deck tin coating on roller surface.
In another kind is arranged, can make each roller through once including the washing trough of liquid tin or ashbury metal, so that the thin tin of one deck or the film of its alloy to be provided on roller surface.That is to say that roller is through having the electrolytic cell of tin or ashbury metal electrode, with the film of deposit one deck tin or alloy on roller surface.
In another embodiment, on roller surface, smear the dilution paste of one deck tin or ashbury metal, the thermal source of use such as electric heater is molten into this paste the coating of one deck tin or ashbury metal on the circumferential surface of roller.
According to a second aspect of the invention, forming machine has the formed body of a cooling at least and in order to motlten metal is injected the device that is engaged in this or each formed body, the surface that is meshed with motlten metal of this formed body is contacted with the low-melting metal or alloy of a kind of its fusing point than molten metal.
For being easier to understand the present invention, only the present invention is described in the mode of example with reference to the following drawings.
Fig. 1 and Fig. 2 are the schematic side elevations of the double roller casting machine of two alternate embodiment of the present invention;
Fig. 3, Fig. 4 and Fig. 5 are the schematic side elevations of a roller in the double roller casting machine of other embodiment of the present invention.
Consult Fig. 1 and Fig. 2 earlier, two rollers 1 and roller of horizontal rotation axis of 3 are on another roller.Nozzle 5 stretches in the roll gap between two rollers.
In use two rollers drive by drive unit (not drawing among the figure) and rotate on the direction shown in the arrow, and the inside of each roller is all by water-cooled.The metal of being cast is convenient to adopt aluminium, is taken in the roll gap by nozzle 5, and this metal is fully cooled off when contacting with roller, begins to solidify and form a strip metal tape 9.Must be careful draw back tape 9 away from these two rollers and be not bonded on arbitrary roller.Have found that when cast aluminum, if between roller and aluminium tin is arranged, then the chance that is bonded on arbitrary roller of aluminium will obviously reduce.Can only during starts or before casting begins tin be coated on each ridge wheel suddenly, or in whole casting cycle, smear continuously at casting cycle.
With reference to Fig. 1, block tin 11 is installed in the clamper (not drawing among the figure), and is positioned on the roller side on nozzle 5 opposites.Clamper can make block tin advance and roller 1 and 3 peripheral contacted states, so that this block tin smears one deck tin film on roller.If block tin does not extend the total length of roller, then clamper is along the vibration of roller length, to provide one deck coating along roller length.In this manner, between roller and aluminium, have one deck tin film, and this layer film can prevent that aluminium is bonded on the roller.
In configuration shown in Figure 2, between each block tin 11 and relevant roller 1,3, be provided with revolving brush 13.This brush is expanded on the whole width of roller, and when it rotates, two brushes a spot of metal of erasing and this metal is deposited on the roller surface from the metal derby.Rotating speed by regulating brush 13 and piece 11 are applied to the pressure on the brush 13, can regulate from piece and transfer to amount of metal on the roller.
In another not shown embodiment, each roller of casting machine has a strip and stretches around its circumference.Each above-mentioned strip is also around through a take-up pulley.Make strip and roller surface keep closely contacting, especially near roll gap.Motlten metal is introduced between the above-mentioned strip.Each strip is steel band and one deck tin coating is arranged on the steel band outer surface preferably.
In use, one deck tin is arranged between motlten metal and roller.When one deck tin coating on this strip ground off, this strip was easy to be replaced.
With reference to Fig. 3, a pallet 15 is arranged below the bottom roller 3, the tin of a large amount of fusions or ashbury metal 16 are presented in this pallet, and when this roller rotated, a part of circumference of roller contacted with motlten metal tin through this pallet.A heater (not drawing among the figure) and is provided with an erasing device (not shown) with so that tin remains under the molten condition, the even scumbling of tin is put on the roller in order to guaranteeing.
Fig. 4 shows another alternative embodiment.Pallet 15 among the figure is being contained electrolyte, and has tin or ashbury metal electrode 17, and this electrode is immersed in the electrolyte.The negative terminal of dc source 18 contacts with the roller that rotates by erasing device 19, and its positive terminal is connected with electrode 17.When roller rotated, the thin tin film of one deck was deposited on the roller surface of being got wet by electrolyte.
In the configuration shown in Figure 5, pallet 15 is being contained the tin or the ashbury metal paste 20 of dilution, and when roller 3 rotated, one deck paste just spread upon on that part of periphery that roller contacts with paste.Also can provide one to become the device of film in order to paste is flattened.
That side of the advancing roller of roller portion in pallet 15 is provided with an electric heater 21.When heater 21 when electric, it is heated the dilution paste by heater, makes tin or tin alloy film that paste melts to be become on the roller surface.
In this embodiment of the present invention, tin/ashbury metal is applied on the molten aluminum.Originally tin/ashbury metal is applied on the molten aluminum, but does not have when bonding in the satisfactory operation of casting, can stop to apply tin/ashbury metal.
Forming machine as the substitute of double roller casting machine can be a belt caster or towed conticaster.
Other metal that can cast comprises aluminum and zinc.
Being cooled to body can be a continuous casting mold.
Claims (14)
1, a kind of metal works formation method, it is characterized in that, motlten metal is injected the formed body that is engaged at least one cooling, with the surface of this or each formed body of motlten metal engagement motlten metal is contacted with layer of metal or alloy, the fusing point of this metal or alloy is lower than the fusing point of motlten metal, to reduce the bonding between solid metallic workpiece and the formed body.
2, method according to claim 1 is characterized in that, above-mentioned motlten metal is an aluminum or aluminum alloy, and the metal or alloy that its above-mentioned fusing point is lower than the fusing point of aluminum or aluminum alloy is tin or ashbury metal.
3, a kind of casting band method, it is characterized in that, the aluminum or aluminum alloy of fusion is introduced in the roll gap between the cold breakdown wheel of a pair of rotation, and at least the casting incipient stage, the circumferential surface of each roller makes tin or ashbury metal contact with the fusion aluminum or aluminum alloy, bonds to reduce between band and the roller.
4, method according to claim 3 is characterized in that, above-mentioned tin or ashbury metal be with the form of coating on the circumferential surface that is provided at each roller before the casting.
5, method according to claim 3 is characterized in that, above-mentioned tin or ashbury metal be with the form of coating on that part of circumferential surface that is provided at roller between the aluminum or aluminum alloy engagement of a part of circumferential surface of roller and fusion continuously.
6, method according to claim 5 is characterized in that, described coating is by having smeared the parts erasing roller periphery of tin or alloy on it and be coated with on each roller and spread with block tin or ashbury metal piece erasing roller periphery or with one.
7, method according to claim 5 is characterized in that, each roller is all through the washing trough of a liquid tin or ashbury metal, to coat above-mentioned coating on roller.
8, according to claim 4 or 5 described methods, it is characterized in that the coating of above-mentioned tin or ashbury metal is coated with by electrolysis and spreads.
According to claim 4 or 5 described methods, it is characterized in that 9, a kind of tin or ashbury metal dilution paste spreads upon on the roller, and be heated and ashbury metal is melted on the roller.
10, method according to claim 3 is characterized in that, above-mentioned tin or ashbury metal are to be among the aluminum or aluminum alloy of fusion, and because its solubility is limited, makes its formation one deck pellicle on aluminum or aluminum alloy.
11, a kind of forming machine, has the formed body of at least one cooling and in order to inject motlten metal and to make it device with this or each formed body engagement, it is characterized in that, the surface with the motlten metal engagement of this or each formed body contacts with a kind of metal or alloy, and the fusing point of this metal or alloy hangs down than the fusing point of motlten metal.
12, a kind of double roller casting machine comprises two rollers that separate; The roller cooling device; Roller driving device; And a nozzle, being infused in the roll gap between two rollers in order to aluminum or aluminum alloy fusion, the periphery of each roller has been smeared the coating of one deck tin or ashbury metal.
13, double roller casting machine according to claim 12, it is characterized in that, the coating of tin or ashbury metal is spread upon on a part of periphery surface of each roller this part was just smeared tin or ashbury metal continuously before the aluminum or aluminum alloy with fusion meshes coating.
14, double roller casting machine according to claim 13 is characterized in that, comprises the solid piece of thrust unit in order to promotion tin or ashbury metal, or parts, makes it to have smeared tin or ashbury metal on the part of each roller periphery surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9111476.9 | 1991-05-29 | ||
| GB919111476A GB9111476D0 (en) | 1991-05-29 | 1991-05-29 | The casting of metal strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1067197A true CN1067197A (en) | 1992-12-23 |
Family
ID=10695703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92104260 Pending CN1067197A (en) | 1991-05-29 | 1992-05-29 | Form metal works by motlten metal |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0586404A1 (en) |
| JP (1) | JPH06507350A (en) |
| CN (1) | CN1067197A (en) |
| AU (1) | AU1657992A (en) |
| BR (1) | BR9206075A (en) |
| GB (1) | GB9111476D0 (en) |
| MX (1) | MX9202543A (en) |
| WO (1) | WO1992021456A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993022086A1 (en) * | 1992-04-28 | 1993-11-11 | Alcan International Limited | Method for preventing sticking on a twin roll caster |
| DE102007061954A1 (en) * | 2007-12-21 | 2009-07-02 | Daimler Ag | Brake disc and method for its production |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE516575C (en) * | 1926-07-23 | 1931-01-24 | Fritz Singer Dr | Process for producing a protective layer on permanent casting molds |
| DE530916C (en) * | 1929-03-06 | 1931-08-03 | Friedrich Grothaus | Gas-absorbing compound for lining casting molds to achieve dense metal castings |
| DE613075C (en) * | 1932-02-23 | 1935-05-11 | Ver Stahlwerke Akt Ges | Process for the production of centrifugally cast pipes |
| US4150708A (en) * | 1977-12-05 | 1979-04-24 | Gte Sylvania Incorporated | Apparatus and method of making filaments |
| US4708194A (en) * | 1981-07-27 | 1987-11-24 | Allied Corporation | Method and apparatus for rapidly solidifying metal employing a metallic conditioning brush |
-
1991
- 1991-05-29 GB GB919111476A patent/GB9111476D0/en active Pending
-
1992
- 1992-05-06 BR BR9206075A patent/BR9206075A/en active Search and Examination
- 1992-05-06 EP EP19920909399 patent/EP0586404A1/en not_active Withdrawn
- 1992-05-06 WO PCT/GB1992/000823 patent/WO1992021456A1/en not_active Application Discontinuation
- 1992-05-06 AU AU16579/92A patent/AU1657992A/en not_active Abandoned
- 1992-05-06 JP JP4508671A patent/JPH06507350A/en active Pending
- 1992-05-28 MX MX9202543A patent/MX9202543A/en unknown
- 1992-05-29 CN CN 92104260 patent/CN1067197A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BR9206075A (en) | 1995-01-03 |
| GB9111476D0 (en) | 1991-07-17 |
| WO1992021456A1 (en) | 1992-12-10 |
| MX9202543A (en) | 1992-11-01 |
| EP0586404A1 (en) | 1994-03-16 |
| JPH06507350A (en) | 1994-08-25 |
| AU1657992A (en) | 1993-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |