CN201175765Y - Thermal separation type plug-rod assembly - Google Patents
Thermal separation type plug-rod assembly Download PDFInfo
- Publication number
- CN201175765Y CN201175765Y CNU2008200696944U CN200820069694U CN201175765Y CN 201175765 Y CN201175765 Y CN 201175765Y CN U2008200696944 U CNU2008200696944 U CN U2008200696944U CN 200820069694 U CN200820069694 U CN 200820069694U CN 201175765 Y CN201175765 Y CN 201175765Y
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- CN
- China
- Prior art keywords
- stopper rod
- plug rod
- bushing
- rod assembly
- casing
- 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
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model provides a thermal separation type plug rod assembly, comprising a fusing stud, an upper plug rod and a lower plug rod. An upper bushing is disposed at the lower portion of the upper plug rod, a lower bushing is disposed at the upper portion of the lower plug rod, a plug head connection structure is disposed at the lower portion of the lower plug rod, both the upper bushing and the lower bushing are equipped with internal threads, both ends of the fusing stud are respectively in threaded connection with the upper bushing and the lower bushing to form an upper-lower plug rod connection portion, and protective layers made of fire-proof materials are respectively disposed on the external surfaces of the upper plug rod, the lower plug rod and the upper-lower plug rod connection portion. The thermal separation type plug rod assembly skillfully carries out thermal separation to the upper plug rod and the lower plug rod by utilizing the variation of the internal temperature of castings during die casting process, which not only meets simple drawing of risers, but also is provided with proper self-strength for closing a molten steel pouring inlet, and the plug rod assembly resolves the problem of the core technique in train wheel casting technique.
Description
Technical field
The utility model relates to a kind of stopper rod assembly that is used to close the pouring molten steel import, specifically, but has related to a kind of thermal release formula stopper rod assembly, belongs to the train wheel casting field.
Background technology
Existing train wheel casting method all is to adopt graphite casting mould, it utilizes the characteristics of the heat-resisting quantity of graphite, high accumulation of heat and low thermal coefficient of expansion, the order of solidifying of wheel can be regulated on the one hand,, the wheel diameters precision can be guaranteed again on the other hand to obtain not having the foundry goods of internal flaw.
The method of employing graphite casting mould casting train wheel is common following two kinds:
First kind: adopt full graphite mould to form part; The feeding of wheel hub is realized that by center riser the feeding of wheel rim is realized by a plurality of rising heads of the circle of one on the wheel rim; Pouring type adopts wheel center low pressure rising pouring cast;
Second kind: wheel rim, tread are formed by graphite mould, and former, wheel hub are formed by tamper; Only establish a center riser, former is the feeding passage of wheel rim; Pouring type adopts the gravity-assist pouring by the center shower gate;
More than two kinds of methods all find to exist shortcoming in practice, with regard to first method, owing on the wheel rim all rising heads are arranged, the removal of rising head and cleaning polishing difficulty are bigger, and workload is also very big, simultaneously, because the influence of rising head, there is problem of non-uniform in tissue in the wheel rim, might form formation of crack; On the other hand, because the existence of this circle rising head, cause and solidify, shrink unbalanced, can form petal-like distortion;
Second method is gravity-assist pouring owing to what adopt, in casting process, molten steel is directly exposed in the air, and molten steel easily produces oxide and air-breathing, the degree of purity of molten steel is affected, simultaneously, molten steel has very big scouring capability during cast, and molten steel is during by cast such as the core that drenches with rain passage, be prone to the problem of burning into sand slag inclusion, and the fact shows that the main waste product that this pouring technology produced is exactly the product with sand cinder hole defective.
Just because of this, the method that is used for the train wheel casting is badly in need of improving; Existing a kind of new train wheel casting method can be avoided above two kinds of existing shortcomings of technical scheme, and the graphite casting mould that it adopted makes molten steel inject from this casting mold bottom; This casting mold is only established a rising head at the center, separated by the rising head pitch cutting between rising head and the wheel foundry goods, treat that molten steel solidification is finished after, need adopt mechanical system to pull off from the wheel part at rising head, after cast, need to adopt a cover stopper rod components drive chock plug, so that chock plug is closed the pouring molten steel import;
In this technology, comparatively Guan Jian technology is: require described stopper rod assembly not influence rising head and pull off, can possess enough intensity promotion chock plugs again and close the pouring molten steel import.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is to solve the deficiencies in the prior art, thereby but provides a kind of thermal release formula stopper rod assembly simple in structure, easy to use.
The utility model is the technical scheme that the above technical problem of solution is adopted:
But a kind of thermal release formula stopper rod assembly; this stopper rod assembly comprises the fusing screw column; last stopper rod and following stopper rod; the described stopper rod bottom of going up is provided with sleeve pipe; described stopper rod top down is provided with setting of casing; described stopper rod bottom down is provided with the chock plug syndeton; described upward sleeve pipe and described setting of casing are provided with internal thread; the two ends of described fusing screw column are threaded with described upward sleeve pipe and described setting of casing respectively to constitute stopper rod connecting portion up and down, the described outer surface of going up stopper rod; the outer surface of described stopper rod connecting portion up and down and the described outer surface of stopper rod down are provided with the refractory material protective layer.
Described upper and lower stopper rod is made by the identical steel pipe of diameter, and described setting of casing is made of described stopper rod top steel pipe down, and described setting of casing part is arranged on described going up in the sleeve pipe.
Described refractory material protective layer is made of resin sand.
The relative prior art of the utility model has substantive distinguishing features and progressive, specifically, following beneficial effect is arranged: this stopper rod assembly makes full use of the variation of foundry goods its internal temperature in casting process, cleverly upper and lower stopper rod is carried out thermal release, both satisfied simply pulling off of rising head, had appropriate self intensity again to close the pouring molten steel import; In new train wheel foundry engieering, this stopper rod assembly has solved the difficult problem in its core technology, makes new technology be able to smooth implementation; This stopper rod modular construction is simple, is easy to make, and cost is low, and is easy to use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
As shown in Figure 1, but a kind of thermal release formula stopper rod assembly, this stopper rod assembly comprises fusing screw column 5, goes up stopper rod 9 and following stopper rod 2, and described upper and lower stopper rod is made by the identical steel pipe of diameter;
Described stopper rod 9 bottoms of going up are provided with sleeve pipe 7, and described stopper rod 2 tops down are provided with setting of casing 6, and described setting of casing 6 is made of described stopper rod top steel pipe down;
Described stopper rod 2 bottoms down are provided with chock plug syndeton 1, and described chock plug syndeton 1 is used for connecting with chock plug, and its shape and size are set according to concrete chock plug situation;
Described upward sleeve pipe 7 and described setting of casing 6 are provided with internal thread, and described setting of casing 6 parts are inserted in described going up in the sleeve pipe 7, and the two ends of described fusing screw column 5 are threaded to constitute stopper rod connecting portion up and down with described upward sleeve pipe 7 and described setting of casing 6 respectively;
Described outer surface and the described outer surface of stopper rod 2 down of going up the outer surface of stopper rod 9, described stopper rod connecting portion up and down is provided with refractory material protective layer 3.
The described stopper rod 9 of going up selects for use common steel tube to make, and is not limited to this certainly, and it will be extracted with rising head after future, rising head pulled off;
Described stopper rod 2 down selects for use common steel tube to make, and is not limited to this certainly, and it will stay foundry goods inside after future, rising head pulled off;
Described refractory material protective layer 3 is used to protect upper and lower stopper rod not melted by molten steel and possesses certain rigidity, and its material can adopt resin sand, but is not limited to this;
The material of described fusing screw column 5 is that a kind of fusing point is than low metal or other material to a certain degree of steel.
Before cast, casting mold inside does not have molten steel, and under this temperature, the fusing screw column has higher intensity, and upper and lower stopper rod is owing to the connection that the fusing screw column is arranged keeps one, and the lower end of following stopper rod connects chock plug and is suspended in the foundry goods;
In casting process, molten steel floods chock plug gradually, and is full of rising head, and is last, molten steel floods the major part of stopper rod assembly, at this moment, and under high temperature action, the intensity of the fusing screw column of stopper rod assembly descends gradually, but because the molten steel buoyancy function, upper and lower stopper rod still keeps one;
After to be cast the finishing, the stopper rod assembly drives chock plug and descends, and makes chock plug block the pouring molten steel import;
Treat foundry goods tentatively solidify, in the time of rising head need being pulled off, the fusing screw column of stopper rod assembly has not at high temperature had intensity or intensity very low, under the effect of mechanical force or gravity, rising head separates with foundry goods in rising head pitch cutting place with last stopper rod, and following stopper rod is stayed foundry goods inside together with chock plug.
It should be noted that at last: above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.
Claims (3)
1; but a kind of thermal release formula stopper rod assembly; it is characterized in that: this stopper rod assembly comprises the fusing screw column; last stopper rod and following stopper rod; the described stopper rod bottom of going up is provided with sleeve pipe; described stopper rod top down is provided with setting of casing; described stopper rod bottom down is provided with the chock plug syndeton; described upward sleeve pipe and described setting of casing are provided with internal thread; the two ends of described fusing screw column are threaded with described upward sleeve pipe and described setting of casing respectively to constitute stopper rod connecting portion up and down, the described outer surface of going up stopper rod; the outer surface of described stopper rod connecting portion up and down and the described outer surface of stopper rod down are provided with the refractory material protective layer.
But 2, a kind of thermal release formula stopper rod assembly according to claim 1, it is characterized in that: described upper and lower stopper rod is made by the identical steel pipe of diameter, described setting of casing is made of described stopper rod top steel pipe down, and described setting of casing part is arranged on described going up in the sleeve pipe.
But 3, a kind of thermal release formula stopper rod assembly according to claim 1, it is characterized in that: described refractory material protective layer is made of resin sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200696944U CN201175765Y (en) | 2008-03-24 | 2008-03-24 | Thermal separation type plug-rod assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200696944U CN201175765Y (en) | 2008-03-24 | 2008-03-24 | Thermal separation type plug-rod assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201175765Y true CN201175765Y (en) | 2009-01-07 |
Family
ID=40215781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200696944U Expired - Lifetime CN201175765Y (en) | 2008-03-24 | 2008-03-24 | Thermal separation type plug-rod assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201175765Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199331A (en) * | 2017-05-25 | 2017-09-26 | 中冶陕压重工设备有限公司 | The dual-purpose apparatus for pouring of one bar |
-
2008
- 2008-03-24 CN CNU2008200696944U patent/CN201175765Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199331A (en) * | 2017-05-25 | 2017-09-26 | 中冶陕压重工设备有限公司 | The dual-purpose apparatus for pouring of one bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090107 |
|
| CX01 | Expiry of patent term |