CN206936287U - A kind of lost foam sprue cup - Google Patents
A kind of lost foam sprue cup Download PDFInfo
- Publication number
- CN206936287U CN206936287U CN201720816952.XU CN201720816952U CN206936287U CN 206936287 U CN206936287 U CN 206936287U CN 201720816952 U CN201720816952 U CN 201720816952U CN 206936287 U CN206936287 U CN 206936287U
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- cup
- sprue cup
- sprue
- air
- cast
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Abstract
The utility model discloses a kind of sprue cup for lost foam hermetic seal cast.Sprue cup includes cup chamber and the funnel section formed after refractory material knots, is welded with supporting leg on sprue cup, is designed with air inlet, has multiple uniform gas outlets in the bottom design of sprue cup.During pouring metal melt, protective gas is passed through, air is separated, prevents air to be pumped into sandbox, avoids carbon distribution caused by module imperfect combustion from remaining, improves cast(ing) surface and inherent quality.
Description
Technical field
The utility model is applied to founding casing with vacuum field, and in particular to what a kind of lost foam cast used pours
Cup.
Background technology
Founding casing with vacuum method is the product that cavityless casting and the casting of V methods combine, and technical process includes EPS（It can send out
Property polystyrene）Module is dry, hangs and applies coating, drying, group case, in sandbox plus sand vibrations moulding, covering agricultural film, vacuumize, pour
The processes such as note, cooling, mould turnover.During cast, high-temperature liquid metal gasifies EPS modules, and gas permeation coating is taken away by vavuum pump, gold
Belong to the cavity after liquid filling EPS gasifications, casting is formed after cooling.
High temperature ferrous alloy fusing point is high, and pouring metal melt temperature is high, and EPS gasifications are fast, and can produce suction air during cast shows
As causing EPS imperfect combustions so that EPS can not be decomposed completely, produce carbon distribution residue.These carbon distribution residues are in casting
Surface then produces surface defect, then influences the mechanical property and compactness of casting in cast-internal, waste product is produced when serious.
Evaporative pattern sandbox can be many types of with one case, convenient for cast, uses packaged type sprue cup more, in sprue cup bottom and
Sandbox upper surface exists at regular intervals, sucks air from the spacing during cast, causes EPS imperfect combustions.
The content of the invention
The utility model solve technical problem be：In casting process, protective gas is passed through in sprue cup bottom, avoids inhaling
Enter the imperfect combustion that air causes EPS, eliminate because of surface and latent defect caused by carbon distribution residue.
Technical scheme is used by the utility model：
The cup chamber and funnel section, the bottom of cup or sidepiece that sprue cup includes steel cup, refractory material is formed after knotting
Supporting leg is welded with, has air inlet in the sidepiece of cup, bottom has to be connected around the gas outlet of funnel section, gas outlet with air inlet.
Protective gas is passed through from air inlet during cast, is flowed out from gas outlet, prevents that being pumped into air from sprue cup bottom enters in sandbox.Protect
Gas generally use nitrogen, inert gas, CO2 etc. are protected, other not oxygenous mixed gas can also be used.
To avoid sucking air from sprue cup, cup intracavitary needs member-retaining portion molten metal, it is necessary to which funnel section is cut during cast
Area is small, in general, should be not more than running gate system sprue minimum sectional area, is directly poured generally for when ensureing and shaking moulding
The intensity in road, sprue are typically no less than 40 × 40mm, or Φ 40mm, so funnel section diameter is not more than Φ 40mm.
The utility model obtain technological progress be：Employ above-mentioned technical proposal, lost foam casting process interval
Air absolutely, module does not produce imperfect combustion phenomenon, in the presence of high-temperature liquid metal, all resolve into gas, improve
Surface quality of continuous castings and inherent quality, reduce percent defective.Supporting leg separates sprue cup with sprue, from gap location can from
Cast situation, casting complete, sprue cup is interior to be remained without molten metal, is advantageous to the reuse of sprue cup.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is A to sprue cup bottom view；
Wherein, 1- cups chamber 2- refractory materials 3- supporting legs 4- funnel section 5- gas outlets 6- air inlet 7- cups.
Embodiment
Fig. 1 is the utility model structure diagram, and the cup 7 of sprue cup uses fire proofed wood by steel plate welding forming, inside
Material 2, which knots, to be molded.Before knotting, gas piping is weldingly fixed on inside cup 7, deforms or misplaces when preventing from knotting.Three
Supporting leg 3 is uniformly welded on the outside of cup 7, or is welded on the bottom of cup, and three leg structures are advantageous to fixed placement sprue cup.
Sprue cup bottom design has the aperture with multiple circumference uniform distributions of gas piping same diameter, the outlet of gas piping
Mouth 5 is fixed with keyhole welding.In the present embodiment, ventilation outer diameter of steel pipes is 15mm, and hole diameter 16mm, steel pipe stretches into aperture
In be welded and fixed, small hole center positions a diameter of 300mm, and uniform 12, small pitch of holes is less than 80mm.Air inlet 6 is designed not
Influence cast, do not influence sprue cup lifting transhipment, the position of convenient connection gas piping, the present embodiment air inlet is designed in cup
7 sidepiece.
After refractory material 2 knots, whole pipeline is embedded in high-abrasive material, the cup chamber 1 of formation is used to accept when pouring into a mould
Molten metal, the sectional area of funnel section 4 are not more than running gate system sprue minimum sectional area, in order to ensure plus sand vibrations moulding when it is straight
The intensity of running channel, sprue sectional dimension are not less than 40mm, a diameter of 30mm of the present embodiment funnel section.
For the utility model sprue cup in cast in use, being passed through protective gas, protective gas can use nitrogen, indifferent gas
Body, CO2Deng other not oxygenous mixed gas can also be used.Protective gas has around funnel section one from sprue cup bottom
The gas outlet outflow of circle, plays a part of completely cutting off air, it is therefore an objective to prevent air from sprue cup bottom inspiration EPS die cavities.Pour
During note, because funnel section diameter is small, the flow velocity of funnel section molten metal is less than the flow velocity of sprue, and sprue cup can maintain necessarily
The molten metal seal gas of amount, prevent air from funnel section inspiration EPS die cavities.
Air is completely cut off in evaporative pattern casting process, module does not produce imperfect combustion phenomenon, and EPS is all decomposed, do not produced
Raw carbon residual, improves surface quality of continuous castings and inherent quality, reduces percent defective；Supporting leg separates sprue cup with sprue,
From gap location can from cast situation, casting complete, remained without molten metal in sprue cup, being advantageous to the repetition of sprue cup makes
With.
Claims (2)
1. a kind of lost foam sprue cup, including steel cup（7）, refractory material（2）The cup chamber formed after knotting（1）And leakage
Struggle against section（4）, it is characterised in that：The cup（7）Bottom or sidepiece are welded with supporting leg（3）, in the cup（7）Sidepiece have into
Gas port（6）, bottom have circular funnel section（4）Gas outlet（5）, the gas outlet（5）With air inlet（6）It is connected.
2. sprue cup according to claim 1, it is characterised in that：The funnel section（4）Diameter be less than or equal to 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816952.XU CN206936287U (en) | 2017-07-07 | 2017-07-07 | A kind of lost foam sprue cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816952.XU CN206936287U (en) | 2017-07-07 | 2017-07-07 | A kind of lost foam sprue cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206936287U true CN206936287U (en) | 2018-01-30 |
Family
ID=61369047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720816952.XU Active CN206936287U (en) | 2017-07-07 | 2017-07-07 | A kind of lost foam sprue cup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206936287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085663A (en) * | 2019-12-18 | 2020-05-01 | 航天海鹰(哈尔滨)钛业有限公司 | Special-shaped pouring cup for high-temperature alloy pouring and forming method thereof |
-
2017
- 2017-07-07 CN CN201720816952.XU patent/CN206936287U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085663A (en) * | 2019-12-18 | 2020-05-01 | 航天海鹰(哈尔滨)钛业有限公司 | Special-shaped pouring cup for high-temperature alloy pouring and forming method thereof |
| CN111085663B (en) * | 2019-12-18 | 2022-06-17 | 航天海鹰(哈尔滨)钛业有限公司 | Special-shaped pouring cup for high-temperature alloy pouring and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vacuum EPC gate cup Effective date of registration: 20220323 Granted publication date: 20180130 Pledgee: China Co truction Bank Corp into the branch Pledgor: HANDAN HUIQIAO COMPOSITE MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2022130000017 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230327 Granted publication date: 20180130 Pledgee: China Co truction Bank Corp into the branch Pledgor: HANDAN HUIQIAO COMPOSITE MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2022130000017 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |