CN201592242U - Vacuum negative pressure self-pouring device for smelting crucible - Google Patents
Vacuum negative pressure self-pouring device for smelting crucible Download PDFInfo
- Publication number
- CN201592242U CN201592242U CN2010201097711U CN201020109771U CN201592242U CN 201592242 U CN201592242 U CN 201592242U CN 2010201097711 U CN2010201097711 U CN 2010201097711U CN 201020109771 U CN201020109771 U CN 201020109771U CN 201592242 U CN201592242 U CN 201592242U
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- China
- Prior art keywords
- negative pressure
- screw rod
- red copper
- cavity
- copper screw
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- Expired - Lifetime
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Abstract
The utility model discloses a vacuum negative pressure self-pouring device for a smelting crucible, the smelting crucible is arranged on a fixed flange through a crucible base, a red copper screw rod is arranged at the bottom of the smelting crucible, and the central through hole of the red copper screw rod is communicated to the bottom of the smelting crucible; a negative pressure cavity is formed on the fixed flange at the lower tip of the red copper screw rod , the lower port of the negative pressure cavity is connected into a forming mold, a gap is formed between the upper port of the forming mold and the lower end of the red copper screw rod, and a negative pressure suction pipe is nested outside the forming mold and communicated with the negative pressure cavity through a plurality of through holes on the fixed flange. The utility model solves the deficiencies of the present pouring technology radically, the pressure of the negative pressure cavity is balanced with that of the smelting crucible during the smelting process, and the smelting raw materials with certain viscosity can not flow in a mold cavity; and the negative pressure suction pipe is utilized to suck the mold cavity communicated with the negative pressure cavity through the gap as the negative pressure through the through holes during the pouring process, and the smelting raw materials can flow into the mold cavity slowly under the pressure of the shielded gas, thereby finishing the mould casting work automatically.
Description
Technical field
The utility model relates to a kind of corollary apparatus of arc-melting furnace, specifically relates to a kind of vacuum negative-pressure self-casting device of melting kettle.
Background technology
Arc-melting furnace is to utilize electrode discharge melting raw material in crucible, raw material after the melting needs casting forming, three kinds of casting modes are roughly arranged in the prior art: the one, be cooled to ingot naturally after the employing melting, this method is the most original, can not obtain the sample of required form, specification, therefore be unfavorable for analysis that the shaping sample is correlated with, even some analysis operations can not carry out; The 2nd, carry out the die casting moulding in that vacuum melting furnace is indoor, but complex structure, operation is difficulty relatively; The 3rd, adopt the suction pouring method, respectively open an aperture in die tip and bottom, aperture by mold bottom is to the mold cavity generation negative pressure of bleeding, the melting raw material sucks mold cavity cooling forming again by the aperture of die tip, though this method has advantages such as simple in structure, easy to operate, the mold failure phenomenon that causes because of reasons such as aperture obstructions also usually takes place.In the arc-melting furnace technical field, existing casting technique is not mature enough, and those skilled in the art is is actively researching and developing some new casting modes.
Summary of the invention
The utility model mainly is to solve the existing in prior technology technical problem, and a kind of vacuum negative-pressure self-casting device of melting kettle is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of vacuum negative-pressure self-casting device of melting kettle, be arranged on melting kettle below, melting kettle is arranged on the mounting flange by the crucible pedestal, described melting kettle bottom is provided with the red copper screw rod, and the central through hole of red copper screw rod is communicated to the bottom of melting kettle; The lower end place of described red copper screw rod, on mounting flange, be provided with negative pressure cavity, the lower port of negative pressure cavity connects mould, be provided with the gap between the lower end of mould upper port and red copper screw rod, mould is arranged with negative pressure straw outward, and negative pressure straw is connected with negative pressure cavity by the some through holes on the mounting flange.
As preferably, be provided with graphite lining core in the central through hole of described red copper screw rod, when taking place to stop up in the use, only need to change graphite lining core and get final product, help saving cost.
As preferably, described red copper screw rod is fixed on the bottom of melting kettle through threaded engagement, adopts the screw thread detaching structure, and is convenient for installation and maintenance.
As preferably, the lower end of described red copper screw rod and mould are down between the trumpet-shaped upper port and are provided with the gap.
Be filled with the protective gas of certain pressure in the arc-melting furnace; negative pressure cavity and melting kettle pressure balance during melting; there is the melting raw material of certain viscosity can not flow in the mold cavity; utilize the negative pressure straw via through holes to inhale into negative pressure by the mold cavity that the gap is communicated with during casting with negative pressure cavity; the melting raw material slowly flows to mold cavity under the pressure of protective gas; automatically finish mold work, can change the mould of difformity die cavity according to actual needs.The utility model has fundamentally solved the deficiency of existing casting technique, and is simple in structure, reasonable in design, convenient and practical, makes equipment casting sample success rate reach 100%.
Description of drawings
Fig. 1 is a kind of perspective view of the present utility model;
Fig. 2 is a kind of sectional structure schematic diagram of the present utility model.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1 and Fig. 2, in the utility model, melting kettle 1 is arranged on the mounting flange 2 by crucible pedestal 11, be provided with cooling water cavity 3 in the crucible pedestal 11, cooling water cavity 3 one sides connect water inlet pipe 14, and opposite side connects outlet pipe 15, constitute the cooling water circulation canal; Melting kettle 1 bottom is fixed with red copper screw rod 4 through threaded engagement, the central through hole of red copper screw rod 4 is communicated to the bottom of melting kettle 1, is provided with graphite lining core 5 in the central through hole of red copper screw rod 4, when taking place to stop up in the use, only need to change graphite lining core and get final product, help saving cost; The lower end place of red copper screw rod 4, on mounting flange 2, be provided with negative pressure cavity 8, the lower port of negative pressure cavity 8 connects mould 6, mould 6 is down between the lower end of trumpet-shaped upper port and red copper screw rod 4 and is provided with gap 7, the mould 6 outer negative pressure straws 10 that are arranged with, negative pressure straw 10 is connected with negative pressure cavity 8 by the some through holes 9 on the mounting flange 2, and the adpting flange 12 of negative pressure straw 10 ends is through connecting soft pipe connection to the stop valve of vacuum system.
During work, the melting raw material is packed into behind the melting kettle, the sealing arc-melting furnace also is evacuated, then toward the interior protective gas of filling certain pressure of arc-melting furnace, this moment melting kettle and mould the die cavity air pressure balance, even raw material by melting after, the die cavity of melting kettle and mould is still keeping pressure balance, has the melting raw material of certain viscosity can not flow in the mold cavity; Utilize the negative pressure straw via through holes to inhale into negative pressure by the mold cavity that the gap is communicated with during casting with negative pressure cavity; the melting raw material slowly flows to mold cavity under the pressure of protective gas; automatically finish mold work, can change the mould of difformity die cavity according to actual needs.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the technical solution of the utility model is not limited to the foregoing description, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (4)
1. the vacuum negative-pressure self-casting device of a melting kettle, be arranged on melting kettle (1) below, melting kettle (1) is arranged on the mounting flange (2) by crucible pedestal (11), it is characterized in that described melting kettle (1) bottom is provided with red copper screw rod (4), the central through hole of red copper screw rod (4) is communicated to the bottom of melting kettle (1); The lower end place of described red copper screw rod (4), on mounting flange (2), be provided with negative pressure cavity (8), the lower port of negative pressure cavity (8) connects mould (6), be provided with gap (7) between the lower end of mould (6) upper port and red copper screw rod (4), mould (6) is outer to be arranged with negative pressure straw (10), and negative pressure straw (10) is connected with negative pressure cavity (8) by the some through holes (9) on the mounting flange (2).
2. the vacuum negative-pressure self-casting device of melting kettle according to claim 1 is characterized in that being provided with graphite lining core (5) in the central through hole of described red copper screw rod (4).
3. the vacuum negative-pressure self-casting device of melting kettle according to claim 1 and 2 is characterized in that described red copper screw rod (4) is fixed on the bottom of melting kettle (1) through threaded engagement.
4. the vacuum negative-pressure self-casting device of melting kettle according to claim 1 and 2 is characterized in that the lower end of described red copper screw rod (4) and mould (6) are down to be provided with gap (7) between the trumpet-shaped upper port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201097711U CN201592242U (en) | 2010-02-08 | 2010-02-08 | Vacuum negative pressure self-pouring device for smelting crucible |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201097711U CN201592242U (en) | 2010-02-08 | 2010-02-08 | Vacuum negative pressure self-pouring device for smelting crucible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201592242U true CN201592242U (en) | 2010-09-29 |
Family
ID=42774305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201097711U Expired - Lifetime CN201592242U (en) | 2010-02-08 | 2010-02-08 | Vacuum negative pressure self-pouring device for smelting crucible |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201592242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797635B (en) * | 2010-02-08 | 2012-04-18 | 杭州大华仪器制造有限公司 | Vacuum negative-pressure self-casting device for melting crucibles |
| CN102744389A (en) * | 2012-07-27 | 2012-10-24 | 湖南三星机床工具有限公司 | Dead head-free casting technology |
-
2010
- 2010-02-08 CN CN2010201097711U patent/CN201592242U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797635B (en) * | 2010-02-08 | 2012-04-18 | 杭州大华仪器制造有限公司 | Vacuum negative-pressure self-casting device for melting crucibles |
| CN102744389A (en) * | 2012-07-27 | 2012-10-24 | 湖南三星机床工具有限公司 | Dead head-free casting technology |
| CN102744389B (en) * | 2012-07-27 | 2014-03-26 | 湖南三星机床工具有限公司 | Dead head-free casting technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100929 Effective date of abandoning: 20120418 |