CN202934102U - Counter-gravity casting lift tube - Google Patents
Counter-gravity casting lift tube Download PDFInfo
- Publication number
- CN202934102U CN202934102U CN 201220583980 CN201220583980U CN202934102U CN 202934102 U CN202934102 U CN 202934102U CN 201220583980 CN201220583980 CN 201220583980 CN 201220583980 U CN201220583980 U CN 201220583980U CN 202934102 U CN202934102 U CN 202934102U
- Authority
- CN
- China
- Prior art keywords
- stalk
- lift tube
- counter
- ceramic layer
- irony
- 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 - Fee Related
Links
Images
Abstract
The utility model discloses a counter-gravity casting lift tube comprising a lift tube body and a flange disc, wherein the flange disc is arranged at the upper end of the lift tube body; a small hole is formed in the side face (which is vertical to the axis of the lift tube) of the flange disc; and the small hole is internally provided with a thermoelectric couple. According to the counter-gravity casting lift tube disclosed by the utility model, the thermoelectric couple is mounted at a connecting part of a flange with the lowest temperature and a casting mould; the pressure leaking procedure and the pouring time of the counter-gravity casting process can be controlled through a signal output by the thermoelectric couple, so as to prevent metal liquid on the flange disc from being condensed and then prevent the lift tube from being blocked; and the counter-gravity casting lift tube is simple in structure, is beneficial to implementation and can produce great economic benefits.
Description
Technical field
The utility model belongs to casting field, relates to a kind of Casting Equipment stalk, especially a kind of antigravity casting stalk.
Background technology
Counter-gravity Casting refer to molten metal in melting kettle under certain gas pressure effect along stalk from bottom to top along the direction filling casting mold opposite with gravity, after molten metal in casting mold solidifies under certain pressure, remove the pressure of crucible liquid level, make in stalk not solidified molten metal get back in crucible and keep stalk unimpeded, open a kind of method that mould obtains foundry goods this moment.Countergravity casting method comprises low pressure casting, counter-pressure casting, adjustable pressure casting etc.Stalk is the important spare part of counter-gravity casting equipment, it is the necessary channel of molten metal filling die cavity, due to long period of soaking in high-temperature liquid metal, be subjected to the erosion of high-temperature liquid metal and repeatedly wash away, except stalk has the performances such as anti-erosion, anti-thermal shock, heat shock resistance tired, good air-tightness, room temperature be shock-resistant, also need in use anti-clogging performance.
For the anti-clogging performance of stalk, present known method is that pouring technology is strictly controlled, and shortens the duration of pouring as far as possible, prevents molten metal cooling resulting in blockage in stalk.Yet the duration of pouring, the short problem of bringing was that molten metal does not also solidify with regard to pressure release in foundry goods, very easily formed the defectives such as shrinkage porosite, shrinkage cavity in foundry goods.
Present known stalk has irony stalk, ceramic lift tube, at the compound stalk of irony tubing inside and outside wall bonded ceramics pipe.The irony stalk needs stenciling coating before use, yet, coating and irony stalk are physical adhesion, wash away or during physical impacts at molten metal, coating very easily comes off, make the irony tube wall directly be subject to molten metal and wash away corrode, cause stalk damage and molten metal to increase iron, affect product quality.As disclosed ceramic mould stalks such as ZL200920224248.0, ZL200810140111.7, ZL200610102067.1, because the method that adopts powder metallurgy is carried out moulding, cause the air-tightness of ceramic lift tube not good, gas easily by the stalk microgap pick-up metal liquid more than liquid level, makes foundry goods produce the defectives such as pore under pressure; Simultaneously, ceramic lift tube fragility is larger, and very easily fracture in assembling or during thermal shock, greatly affect production efficiency.Irony stalk air-tightness is good owing to having given full play to for compound stalk, room temperature and elevated temperature strength advantages of higher, has brought into play simultaneously the anti-molten metal of the ceramic layer characteristics of erosion repeatedly, is the developing direction of antigravity casting stalk.Yet, as described in ZL200520073212.9, ZL200820059059.8, irony layer pipe in compound stalk and ceramic layer pipe adopt waterglass or other physical method to carry out bonding, adopt this method good than the method for swabbing on the irony stalk, but also exist irony layer and ceramic layer in conjunction with untight problem, molten metal very easily infiltrates from irony layer and ceramic layer seam crossing, causes irony pipe corrode, pollutes aluminium alloy.Simultaneously, the ceramic layer pipe also needs to adopt the mode moulding of powder metallurgy, complex process, and cost is very high.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of antigravity casting stalk is provided, and this stalk has erosion resistance, shock-resistant, high strength, avoid that molten metal pollutes, anticlogging characteristic.
The purpose of this utility model solves by the following technical programs:
Comprise stalk and ring flange; Described ring flange is arranged on the stalk upper end; Radially offer aperture perpendicular to the stalk axle center in ring flange, in described aperture, thermocouple is installed.
The thickness of above-mentioned ring flange is greater than 4mm.
The tube wall of above-mentioned stalk is composite construction; Its inside and outside surface is the irony base layer, and the surface of described irony base layer generates one deck ceramic layer by differential arc oxidation, and is the transition zone that Al atom and Fe atom form between ceramic layer and irony base layer.
Above-mentioned ceramic layer is Al
2O
3Ceramic layer.
Above-mentioned irony base layer is stainless-steel seamless pipe, stainless steel welded pipe or cast iron pipe.
The utility model passes through at temperature minimum flange and casting mold junction installation thermocouple, pressure release operation and the duration of pouring of the signal controlling antigravity casting process that can export by thermocouple, prevent that ring flange place molten metal from solidifying, and then prevent that stalk from stopping up, and simple in structure, be conducive to implement, can produce great economic benefit.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1 is ring flange; 2 is stalk; 3 is aperture; 4 is thermocouple; 5 is ceramic layer; 6 is transition zone; 7 is the irony base layer.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1, this antigravity casting stalk comprises stalk 2 and ring flange 1; Described ring flange 1 is arranged on stalk 2 upper ends, and ring flange 1 thickness is greater than 4mm; Radially offer aperture 3 perpendicular to stalk 2 axle center in ring flange 1, in described aperture 3, thermocouple 4 is installed.The tube wall of stalk 2 is composite construction; Its inside and outside surface is irony base layer 7, and the surface of described irony base layer 7 generates one deck Al by differential arc oxidation
2O
3Ceramic layer 5, and be the transition zone 6 that Al atom and Fe atom form between ceramic layer 5 and irony base layer 7.Irony base layer 7 is stainless-steel seamless pipe, stainless steel welded pipe or cast iron pipe.
Another large feature of stalk of the present utility model is to adopt the method for differential arc oxidation to generate one deck Al at the surfaces externally and internally of irony stalk
2O
3Ceramic layer is the transition zone that is formed by Al atom and Fe atom between ceramic layer and irony layer.The Al of stalk outer surface
2O
3The molten metals such as ceramic layer and aluminium alloy, copper alloy are not invaded profit, and ceramic layer erosion resistance more, have effectively avoided the corrosion problem of irony layer, prevent molten metal Ceng Tie.Simultaneously, due to Al
2O
3Ceramic layer is generated in-situ on irony stalk matrix, the transition zone that exists Al atom and Fe atom to form between ceramic layer and irony layer, ceramic layer adheres on the irony base layer by atomic binding forces, and adhesion is strong, the also difficult drop-off even ceramic layer is subject to colliding with.Stalk matrix material of the present invention is still ferrous material, as stainless steel tube, cast iron pipe etc., guaranteed that stalk has high air-tightness and room temperature, mechanical behavior under high temperature, and the generation of ceramic layer adopts the method for differential arc oxidation to get final product one-shot forming, speed is fast, and efficient is high, and cost is low, the compound stalk reliability that obtains is high, extremely is conducive to implement.
A kind of antigravity casting stalk as shown in Figure 1, described stalk is composite structured.Stalk is comprised of stalk 2 and ring flange 1, the thickness of ring flange 1 is greater than 4mm, bore an aperture 3 greater than Ф 3mm perpendicular to the stalk axle center on ring flange, thermocouple 4 is installed in the hole, this thermocouple output signal is connected to control the duration of pouring with counter-gravity casting equipment, prevent that stalk from stopping up.The pipe tube wall adopts composite construction, adopts the method for differential arc oxidation to form surfaces A l
2O
3Ceramic layer 5 and Fe atom and Al atomic transition layer 6, irony base layer 7 can be stainless-steel seamless pipe, stainless steel welded pipe or cast iron pipe, due to Al
2O
37 of ceramic layer 5 and irony base layers have transition zone 6, and adhesion is strong, and the stalk of formation has anti-clogging, anti-erosion, shock-resistant, high-intensity superperformance, and is simple in structure, are conducive to implement, and can produce great economic benefit.
Claims (5)
1. an antigravity casting stalk, is characterized in that: comprise stalk (2) and ring flange (1); Described ring flange (1) is arranged on stalk (2) upper end; Radially offer aperture (3) perpendicular to stalk (2) axle center in ring flange (1), thermocouple (4) is installed in described aperture (3).
2. a kind of antigravity casting stalk according to claim 1, it is characterized in that: the thickness of described ring flange (1) is greater than 4mm.
3. a kind of antigravity casting stalk according to claim 1, it is characterized in that: the tube wall of described stalk (2) is composite construction; Its inside and outside surface is irony base layer (7), and the surface of described irony base layer (7) generates one deck ceramic layer (5) by differential arc oxidation, and is the transition zone (6) that Al atom and Fe atom form between ceramic layer (5) and irony base layer (7).
4. a kind of antigravity casting stalk according to claim 3, it is characterized in that: described ceramic layer (5) is Al
2O
3Ceramic layer.
5. a kind of antigravity casting stalk according to claim 3, it is characterized in that: described irony base layer (7) is stainless-steel seamless pipe, stainless steel welded pipe or cast iron pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583980 CN202934102U (en) | 2012-11-07 | 2012-11-07 | Counter-gravity casting lift tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583980 CN202934102U (en) | 2012-11-07 | 2012-11-07 | Counter-gravity casting lift tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202934102U true CN202934102U (en) | 2013-05-15 |
Family
ID=48318363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220583980 Expired - Fee Related CN202934102U (en) | 2012-11-07 | 2012-11-07 | Counter-gravity casting lift tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202934102U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834399A (en) * | 2016-04-11 | 2016-08-10 | 南通大学 | Composite low-pressure casting riser tube and preparation method thereof |
| CN106825498A (en) * | 2017-01-08 | 2017-06-13 | 中车戚墅堰机车车辆工艺研究所有限公司 | Stalk and its manufacture method |
| CN108436061A (en) * | 2018-05-15 | 2018-08-24 | 北京交通大学 | A kind of antigravity casting suction pipe |
| CN109940152A (en) * | 2017-12-21 | 2019-06-28 | 沈阳铸造研究所有限公司 | A kind of high temperature alloy antigravity casting stalk and its manufacturing method |
| CN113199006A (en) * | 2021-04-15 | 2021-08-03 | 江苏迅隆铝业有限公司 | Composite lift pipe for sand mold low pressure |
-
2012
- 2012-11-07 CN CN 201220583980 patent/CN202934102U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834399A (en) * | 2016-04-11 | 2016-08-10 | 南通大学 | Composite low-pressure casting riser tube and preparation method thereof |
| CN105834399B (en) * | 2016-04-11 | 2017-12-15 | 南通大学 | A kind of composite low-pressure casting stalk and preparation method thereof |
| CN106825498A (en) * | 2017-01-08 | 2017-06-13 | 中车戚墅堰机车车辆工艺研究所有限公司 | Stalk and its manufacture method |
| CN109940152A (en) * | 2017-12-21 | 2019-06-28 | 沈阳铸造研究所有限公司 | A kind of high temperature alloy antigravity casting stalk and its manufacturing method |
| CN108436061A (en) * | 2018-05-15 | 2018-08-24 | 北京交通大学 | A kind of antigravity casting suction pipe |
| CN113199006A (en) * | 2021-04-15 | 2021-08-03 | 江苏迅隆铝业有限公司 | Composite lift pipe for sand mold low pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202934102U (en) | Counter-gravity casting lift tube | |
| CN1190285C (en) | Antigravitational vacuum method and apparatus for asting Mg allor or Al alloy with lost mould | |
| CN103317109B (en) | A kind of method weakening the heat transfer of continuous cast mold bight | |
| CN104308081A (en) | Method for V-method shaping anti-gravity pouring of aluminum alloy casting | |
| CN101618429B (en) | Method for casting hub casts of aerogenerators | |
| CN103658535A (en) | Investment casting process of large copper impeller | |
| CN101618428A (en) | Method for casting hub casts of aerogenerators | |
| CN101693283B (en) | Casting mold and casting method of high aluminum zinc alloy annular casting parts | |
| CN102925945A (en) | Mother for preparing a lifting tube through counter-gravity casting | |
| CN102806313B (en) | Method for preventing casting boss from shrinkage porosity | |
| CN104190875A (en) | Composite casting mold forming method for complex thin-wall casing | |
| CN104607595A (en) | Large-scale casting device for aluminum-water utensil | |
| CN101422809B (en) | Shrinkage compensation method of hollow cast | |
| CN205629348U (en) | Cast magnesium alloy waters package with pushing off slag function | |
| CA2497230A1 (en) | A method for casting objects with an improved hub core assembly | |
| CN101570801A (en) | Copper cooling plate and manufacturing process thereof | |
| CN201275597Y (en) | Feeding cast form of hollow casting | |
| CN102350485A (en) | Device and process for repairing shrinkage holes during steel billet casting through intermediate-frequency electric heating | |
| CN206083826U (en) | Be used for fashioned novel mould of half solid -state thick liquids | |
| CN105149561A (en) | Casting ladle and manufacturing technology thereof | |
| CN2585721Y (en) | Casting equipment for Mg/Al alloy antigravity vacuum vanishing die | |
| CN202377499U (en) | Casting ingot die with high yield | |
| CN108526425B (en) | Composite metal continuous casting device and continuous casting method | |
| CN203281826U (en) | Water cooling ingot die for producing hollow steel ingot | |
| CN104525921A (en) | Process for guaranteeing casting feeding in place during melting casting process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141107 |
|
| EXPY | Termination of patent right or utility model |