CN1903482A - Graphite ring for continuous lubrication crystallizer - Google Patents
Graphite ring for continuous lubrication crystallizer Download PDFInfo
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- CN1903482A CN1903482A CN 200610040880 CN200610040880A CN1903482A CN 1903482 A CN1903482 A CN 1903482A CN 200610040880 CN200610040880 CN 200610040880 CN 200610040880 A CN200610040880 A CN 200610040880A CN 1903482 A CN1903482 A CN 1903482A
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- graphite annulus
- graphite
- crystallizer
- annulus
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Abstract
A graphite ring for continuously lubricating crystallizer is prepared from graphite powder through cold isostatic pressing, sintering and machining. The finished graphite ring is also disclosed.
Description
Technical field
The present invention relates to a kind of graphite annulus for continuous lubricating crystallizer, be applied to aluminium and aluminum alloy semi-continuous casting crystallizer.
Background technology
At present, aluminium and aluminum alloy semi-continuous casting crystallizer generally adopt graphite cannula self-lubricating and these two kinds of lubricating systems of coating lubricating oil, though in casting process, can reduce the friction between aluminium alloy melt and the crystallizer, can play certain lubricant effect, but the graphite self-lubricating effect is relatively poor, be difficult to satisfy the lubricating requirement of casting process, cause ingot casting surface to hang aluminium, draw trace, cold shut, serious problems such as rough surface, segregation bed thickness, tissue odds are even; Fail the real good continuous lubrication function that realizes, still do not have effective measures for reducing once to cool off simultaneously.
Summary of the invention
The objective of the invention is in order to solve the above-mentioned problems in the prior art satisfactorily, a kind of graphite annulus for continuous lubricating crystallizer is provided, air and lubricating oil pressurization back see through the graphite annulus groove and form layer of even oil gas film at the graphite annulus inwall, play good heat insulation and lubrication.
Purpose of the present invention is achieved through the following technical solutions:
A kind of graphite annulus for continuous lubricating crystallizer, it is characterized in that: these graphite annulus raw material adopt powdered graphite, the graphite annulus shape is structure in the form of a ring, the inwall of graphite annulus is provided with ramp type step [1], outer wall is provided with groove [6] and [7], and face [5] and [8], graphite annulus and crystallizer employing interference fit.
Further, above-mentioned a kind of graphite annulus for continuous lubricating crystallizer, described graphite annulus adopt the isostatic cool pressing legal system to be equipped with blank, sintering, machined member; Described graphite annulus outer wall groove is 2～5; The ramp type step [1] of described graphite annulus inwall is 3～10 ° inclination angle; Described graphite annulus outside wall surface [5] and [8] scribble high-temperature seal adhesive.
Again further, above-mentioned a kind of graphite annulus for continuous lubricating crystallizer, the edge of described graphite annulus be rounded down [3], [4] and [9].
The outstanding substantive distinguishing features and the obvious improvement of technical solution of the present invention is mainly reflected in:
1. graphite annulus of the present invention adopts the powdered graphite isostatic cool pressing to prepare blank, sintering, machined member, graphite annulus voidage and mechanical property have fully been guaranteed, air and lubricating oil pressurization back see through graphite annulus in corresponding recesses, form the even oil gas film of one deck at the graphite annulus inwall.
2. graphite annulus of the present invention is in casting process, and the oil gas film has good heat insulation and continuous lubrication, and its pyroconductivity reduces once cooling much smaller than crystallizer, and the ingot casting surface segregation layer significantly reduces, and the interior tissue quality significantly improves.
3. oil gas film lubrication effect has effectively been eliminated extension aluminium, has been drawn problems such as trace much larger than crystallizer, has significantly improved ingot surface quality and casting speed.
4. design uniqueness, novel structure, its economic benefit is very remarkable.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: billet crystallizer graphite annulus vertical view;
Fig. 2: crystallizer graphite annulus cutaway view;
Fig. 3: crystallizer graphite annulus broken section enlarged drawing;
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | Reference numeral | Implication | | Implication | |
| 1 | The | 2 | | 3 | The inwall | |
| 4 | The outer wall | 5 | Outer wall top | 6 | | |
| 7 | Lubricating | 8 | Outer wall lower | 9 | The outer wall lower edge |
The specific embodiment
The invention provides a kind of graphite annulus for continuous lubricating crystallizer, graphite annulus adopts powdered graphite, is equipped with blank, sintering and is machined to part with the isostatic cool pressing legal system, and hot charging advances crystallizer; After air and the lubricating oil pressurization, see through the annular groove of graphite annulus outer wall, on the graphite annulus inwall, form layer of even oil gas film, play good heat insulation and continuous lubrication; Be widely used in aluminium and aluminum alloy semi-continuous casting crystallizer.
As shown in Figure 1 and Figure 2: graphite annulus of the present invention is structure in the form of a ring, and the inwall of graphite annulus is provided with ramp type step 1, and outer wall is provided with air grooves 6 and lubricating oil groove 7, and fluid sealant face 5 and fluid sealant face 8, inwall upper edge rounding 3, outer wall upper edge rounding 4, outer wall lower edge rounding 9.Graphite annulus design ramp type step 1 also is 3～10 ° inclination angle, guarantees to seal between transition rings and the graphite annulus.Graphite annulus adopts powdered graphite to be equipped with blank with the isostatic cool pressing legal system, through repeatedly impregnating pitch and high-temperature roasting, machined member then; It is raw material that graphite annulus adopts powdered graphite, and the graphite thermal coefficient of expansion is little, guarantees that graphite annulus keeps the workpiece size precision down at high temperature (650～750 ℃); Guaranteed that also material has good intensity and anti-wear performance, and had certain voidage, realized the graphite annulus saturating oily purpose of breathing freely, satisfied the requirement in service life.Graphite annulus outer wall and crystallizer inwall are interference fit, guarantee to seal between graphite annulus and the crystallizer, prevent the leakage of oil of leaking gas; And graphite annulus outer wall 5 and 8 is smeared high-temperature seal adhesive, guarantees fully sealing, prevents that oil gas from exosmosing.Graphite annulus outer wall design air groove 6 and lubricating oil groove 7, its quantity are 2～5, and the wall thickness at groove position is thinner relatively, help air and lubricating oil sees through.Graphite annulus edge rounding 3,4 and 9 is convenient to the graphite annulus dismounting.
In concrete the application: transition rings 2 compresses ramp type step 1, and transition rings 2 and graphite annulus are closely cooperated, and effectively prevents to bore phenomenons such as aluminium, extension aluminium; Graphite annulus edge rounding 3,4 and 9 has effectively prevented the scuffing of graphite annulus in the disassembly process; Graphite annulus outer wall section 5 and 8 and the crystallizer interference fit adopts hot-mounting process to install, and smears high-temperature seal adhesive, has effectively stopped air lubrication oil and has exosmosed; Belt air grooves 6 of graphite annulus outer wall and lubricating oil groove 7 communicate with crystallizer respective air passage and grease channel, and air and lubricating oil are not mixing in the groove separately; Air and lubricating oil are depressed through graphite annulus adding, and form the even oil gas film of one deck at the graphite annulus inwall, play good heat insulation and lubrication, good heat-blocking action has reduced ingot casting surface segregation layer thickness, eliminate cold shut, restrain the inner column crystals growth of ingot casting, refinement ingot casting crystal grain; Good lubrication has been restrained extension aluminium, has been drawn trace, has improved ingot surface quality, has improved casting speed.
The operating pressure that keeps compressed air and lubricating oil, see through graphite annulus and form the even oil gas film of one deck at the graphite annulus inwall, play good heat insulation and continuous lubrication, its pyroconductivity is much smaller than crystallizer, reduce once cooling, the ingot casting surface segregation layer significantly reduces, and the interior tissue quality significantly improves; Oil gas film lubrication effect has effectively been eliminated extension aluminium, has been drawn problems such as trace much larger than crystallizer.
Certainly, more than only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the rights protection scope of the present invention.
Claims (6)
1. graphite annulus for continuous lubricating crystallizer, it is characterized in that: these graphite annulus raw material are powdered graphite, the graphite annulus shape is structure in the form of a ring, the inwall of graphite annulus is provided with ramp type step [1], outer wall is provided with groove [6] and [7], and face [5] and [8], graphite annulus and crystallizer employing interference fit.
2. a kind of graphite annulus for continuous lubricating crystallizer according to claim 1 is characterized in that: described graphite annulus adopts the isostatic cool pressing legal system to be equipped with blank, sintering, machined member.
3. a kind of graphite annulus for continuous lubricating crystallizer according to claim 1 is characterized in that: described graphite annulus outer wall groove is 2～5.
4. a kind of graphite annulus for continuous lubricating crystallizer according to claim 1 is characterized in that: the ramp type step [1] of described graphite annulus inwall is 3～10 ° inclination angle.
5. a kind of graphite annulus for continuous lubricating crystallizer according to claim 1 is characterized in that: described graphite annulus outside wall surface [5] and [8] scribble high-temperature seal adhesive.
6. a kind of graphite annulus for continuous lubricating crystallizer according to claim 1 is characterized in that: the edge of described graphite annulus be rounded down [3], [4] and [9].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610040880 CN1903482A (en) | 2006-08-01 | 2006-08-01 | Graphite ring for continuous lubrication crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610040880 CN1903482A (en) | 2006-08-01 | 2006-08-01 | Graphite ring for continuous lubrication crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1903482A true CN1903482A (en) | 2007-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610040880 Pending CN1903482A (en) | 2006-08-01 | 2006-08-01 | Graphite ring for continuous lubrication crystallizer |
Country Status (1)
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| CN (1) | CN1903482A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733372B (en) * | 2008-11-26 | 2011-12-28 | 苏州有色金属研究院有限公司 | Graphite annulus for continuous lubricating crystallizer and manufacturing method thereof |
| CN102365144A (en) * | 2009-02-26 | 2012-02-29 | Pmg菲森有限公司 | Powder-metallurgical body and method for the production thereof |
-
2006
- 2006-08-01 CN CN 200610040880 patent/CN1903482A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733372B (en) * | 2008-11-26 | 2011-12-28 | 苏州有色金属研究院有限公司 | Graphite annulus for continuous lubricating crystallizer and manufacturing method thereof |
| CN102365144A (en) * | 2009-02-26 | 2012-02-29 | Pmg菲森有限公司 | Powder-metallurgical body and method for the production thereof |
| CN102365144B (en) * | 2009-02-26 | 2016-01-20 | Pmg菲森有限公司 | Powder metallurgical body and preparation method thereof |
| US9623483B2 (en) | 2009-02-26 | 2017-04-18 | Pmg Fuessen Gmbh | Powder-metallurgical body and method for the production thereof |
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