CN103008611A - Lift tube for pressure casting - Google Patents
Lift tube for pressure casting Download PDFInfo
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- CN103008611A CN103008611A CN 201110289626 CN201110289626A CN103008611A CN 103008611 A CN103008611 A CN 103008611A CN 201110289626 CN201110289626 CN 201110289626 CN 201110289626 A CN201110289626 A CN 201110289626A CN 103008611 A CN103008611 A CN 103008611A
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- Prior art keywords
- tube
- pipe
- stalk
- die casting
- metal
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Abstract
The invention discloses a lift tube for pressure casting, which comprises an upper tube and a lower tube, wherein the upper tube and the lower tube are in threaded connection, the inner diameter of the upper tube is coincident with that of the lower tube, the upper tube is a metal tube, and the lower tube is a silicon carbide ceramic tube. The lift tube for pressure casting has expectant strength and good weight capacity and wear resistant performance, the silicon carbide ceramic tube and a high-temperature resistant material layer can be used for favorably preventing molten metal from infiltrating into the metal tube, and therefore, adverse chemical reaction of the metal tube and the molten metal can be effectively prevented.
Description
Technical field
The present invention relates to the die casting field, particularly relate to a kind of stalk for die casting.
Background technology
In the process of making the foundry goods such as wheel hub, usually can adopt stalk to carry out die casting.For example, the hypomere immersion of stalk (for example is contained with high-temperature liquid metal, aluminium water) in the crucible or melting furnace, make molten metal by being inserted in the stalk in crucible or the melting furnace by the pressure rising, immerse casting mould along the direction opposite with gravity, and further pressurize to consist of foundry goods.
Usually, stalk is formed by the cylindrical element structure of hollow.Comparatively common stalk is divided into two kinds at present: a kind of is by metal metal stalks such as iron, stainless steels, and another kind is by nonmetal nonmetal stalks of making such as graphite, clays.But these two kinds of stalks all have shortcoming separately.
For the metal stalk, since the temperature of the molten metal in crucible or the melting furnace often up to 800 ℃ to 1000 ℃, therefore the metal stalk (for example, iron pipe) if long period of soaking at high-temperature liquid metal (for example, aluminium water) in, can cause the metal ingredient of stalk to enter high-temperature liquid metal.If these two kinds of metals are not identical, will have a strong impact on the quality of product, and stalk itself also can be subject to very big infringement.In addition, owing to can produce expansion after metal heated, also can exert an influence to the metal stalk.
For nonmetal stalk, because the temperature-resistant material weight capacity such as graphite, clay and anti-wear performance are relatively poor, stalk very easily wearing and tearing under the pressure of mould, broken and fracture.In addition, owing to need to adopt special equipment to make nonmetal stalk, its manufacturing cost is also very high.
Therefore, be badly in need of at present with lower cost make a kind of not only had higher firmness but also not can with the stalk of high-temperature liquid metal generation adverse effect.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of problem that can overcome the stalk corrosion, prevents that aluminium liquid from increasing iron, has the stalk that is used for die casting of higher weight capacity and wearability.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of stalk for die casting is provided, comprises top tube and down tube, described top tube and down tube are threaded connection, upper pipe is consistent with lower bore, and described upper pipe is metal tube, and described lower pipe is silicon carbide ceramic.
In a preferred embodiment of the present invention, described upper pipe outer wall is provided with one deck exotic material layer.
In a preferred embodiment of the present invention, described exotic material layer is a kind of in carborundum films, refractory fiber floor and the cementitious coating.
In a preferred embodiment of the present invention, described metal tube is a kind of in stainless steel tube, iron pipe, the steel pipe.
In a preferred embodiment of the present invention, described upper pipe lower end is provided with external screw thread.
In a preferred embodiment of the present invention, described lower pipe upper end is the step circular hole, and step circular hole wall is provided with the internal thread that cooperates with upper pipe.
In a preferred embodiment of the present invention, described upper pipe and lower pipe junction water glass capsulation.
The invention has the beneficial effects as follows: the stalk that the present invention is used for die casting both can have the intensity of expectation, can have good weight capacity and anti-wear performance again, in addition, because silicon carbide ceramic and exotic material layer can prevent well that molten metal from infiltrating through metal tube, therefore can effectively prevent from occuring between metal tube and the molten metal disadvantageous chemical reaction.
Description of drawings
Fig. 1 is the perspective view that the present invention is used for stalk one preferred embodiment of die casting;
The mark of each parts is as follows in the accompanying drawing: 1, upper pipe, 2, lower pipe, 3, the exotic material layer.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
See also Fig. 1, the embodiment of the invention comprises:
A kind of stalk for die casting, comprise pipe 1 and lower pipe 2, described upper pipe 1 and lower pipe 2 are threaded connection, upper pipe 1 is consistent with lower pipe 2 internal diameters, described upper pipe 1 is metal tube, described lower pipe 2 is silicon carbide ceramic, and this silicon carbide ceramic mainly is made of about 60% carborundum and about 40% silicon nitride.
Described upper pipe 1 lower end is provided with external screw thread, and described lower pipe 2 upper ends are the step circular hole, and about the dark 100mm of step circular hole, step circular hole wall is provided with the internal thread that cooperates with upper pipe 1, and upper pipe 1 and lower pipe 2 junction water glass capsulations make the junction form sealing.
Described upper pipe 1 is a kind of in stainless steel tube, iron pipe, the steel pipe, can guarantee that stalk has the intensity of expectation, and is unlikely to occur broken and fracture when pressurization.On the other hand, upper pipe 1 outer wall is provided with one deck exotic material layer 3, described exotic material layer 3 is a kind of in carborundum films, refractory fiber floor and the cementitious coating, can prevent effectively that aluminium water from entering pipe 1, thereby obtains good weight capacity and anti-wear performance in proof strength.
The stalk that the present invention is used for die casting both can have the intensity of expectation, can have good weight capacity and anti-wear performance again, in addition, because silicon carbide ceramic and exotic material layer 3 can prevent well that molten metal from infiltrating through metal tube, therefore can effectively prevent from occuring between metal tube and the molten metal disadvantageous chemical reaction.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (7)
1. stalk that is used for die casting, it is characterized in that: comprise pipe (1) and lower pipe (2), described upper pipe (1) and lower pipe (2) are threaded connection, upper pipe (1) is consistent with lower pipe (2) internal diameter, described upper pipe (1) is metal tube, and described lower pipe (2) is silicon carbide ceramic.
2. the stalk for die casting according to claim 1, it is characterized in that: described upper pipe (1) outer wall is provided with one deck exotic material layer (3).
3. the stalk for die casting according to claim 2 is characterized in that: a kind of in carborundum films, refractory fiber floor and the cementitious coating of described exotic material layer (3).
4. the stalk for die casting according to claim 1 is characterized in that: described metal tube is a kind of in stainless steel tube, iron pipe, the steel pipe.
5. the stalk for die casting according to claim 1, it is characterized in that: described upper pipe (1) lower end is provided with external screw thread.
6. the stalk for die casting according to claim 1 is characterized in that: described lower pipe (2) upper end is the step circular hole, and step circular hole wall is provided with the internal thread that cooperates with upper pipe (1).
7. the stalk for die casting according to claim 1 is characterized in that: described upper pipe (1) and lower pipe (2) junction water glass capsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110289626 CN103008611A (en) | 2011-09-27 | 2011-09-27 | Lift tube for pressure casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110289626 CN103008611A (en) | 2011-09-27 | 2011-09-27 | Lift tube for pressure casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103008611A true CN103008611A (en) | 2013-04-03 |
Family
ID=47958025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110289626 Pending CN103008611A (en) | 2011-09-27 | 2011-09-27 | Lift tube for pressure casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103008611A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406529A (en) * | 2013-07-26 | 2013-11-27 | 江苏神马电力股份有限公司 | Foundry furnace |
| CN105315009A (en) * | 2015-11-30 | 2016-02-10 | 衡阳凯新特种材料科技有限公司 | Coating for silicon nitride lift tubes and preparation method thereof |
| CN107552765A (en) * | 2017-08-11 | 2018-01-09 | 徐州东力锻压机械有限公司 | A kind of stalk for being used to cast |
-
2011
- 2011-09-27 CN CN 201110289626 patent/CN103008611A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406529A (en) * | 2013-07-26 | 2013-11-27 | 江苏神马电力股份有限公司 | Foundry furnace |
| CN105315009A (en) * | 2015-11-30 | 2016-02-10 | 衡阳凯新特种材料科技有限公司 | Coating for silicon nitride lift tubes and preparation method thereof |
| CN105315009B (en) * | 2015-11-30 | 2017-07-18 | 衡阳凯新特种材料科技有限公司 | Coating for silicon nitride stalk and preparation method thereof |
| CN107552765A (en) * | 2017-08-11 | 2018-01-09 | 徐州东力锻压机械有限公司 | A kind of stalk for being used to cast |
| CN107552765B (en) * | 2017-08-11 | 2020-07-28 | 徐州东力锻压机械有限公司 | Be used for as cast stalk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |