CN104936722A - Riser sleeve with air gap - Google Patents
Riser sleeve with air gap Download PDFInfo
- Publication number
- CN104936722A CN104936722A CN201380060194.8A CN201380060194A CN104936722A CN 104936722 A CN104936722 A CN 104936722A CN 201380060194 A CN201380060194 A CN 201380060194A CN 104936722 A CN104936722 A CN 104936722A
- Authority
- CN
- China
- Prior art keywords
- chamber
- riser buss
- main body
- riser
- buss
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
- Mold Materials And Core Materials (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A riser sleeve (100) for use in a foundry molding operation has cylindrical body in which the side wall (14) that may be untapered or that may taper uniformly from the bottom to the top (12) of the body. The riser sleeve is characterized by a plurality of cavities (102) are formed on the side wall, extending from the top in an axial direction of the body. These cavities provide air gaps when the riser sleeve is inserted into a mold, decreasing heat loss at the interface between the riser sleeve and the mold.
Description
Technical field
Embodiment disclosed by the invention relates to a kind of riser buss (riser sleeve used in the casting of motlten metal, riser sleeve), and particularly relate to a kind of such riser buss, this riser buss is shaped around its outer surface, provides closed chamber during to be inserted into the emitting in oral cavity of casting mould at riser buss.In embodiment more specifically, chamber is positioned in cover to extend to the recess of general vertical along the outside of cover when riser buss is operatively positioned in casting mould.
Background technology
Other prior aries with reference in, as at United States Patent (USP) 6,640, illustrated in 874, riser buss and uses thereof is well known in the prior art.Riser buss is used as pipeline and is used as reservoir in casting die.Motlten metal pour into be configured as the characteristic with formed product preform chamber in time, the part of the metal of toppling over to flow in rising head and gathers in rising head.Due to the metal freezing in chamber, so when not having rising head, the contraction of the metal solidified in mould causes change in size and may form inner chamber.
The heat leakage of intraoral metal is emitted first to occur at the joint of metal and mould.By strategically one or more riser buss being arranged in casting mould (wherein, each riser buss is communicated with chamber in the mode of gravity feed fluid), and by the motlten metal in cover is kept (being at least preferably the metal in foundry goods) in the molten state, to make motlten metal after being poured onto in mould by the flow of molten metal in cover be still spendable, thus offset contraction.If this target unrealized, the metal light so in riser buss is changed places and is solidified, and another accessory in becoming the foundry goods needing removal when product completes.
Riser buss itself is not a part for final casting.Once foundry goods suitably cools, the part of rising head as casting mould will be removed.
In casting industry, people constantly make great efforts to provide a kind of riser buss, and this riser buss realizes the object of riser buss in an efficient way.This consistent efforts indicate the demand to additional improvement consumingly.
Therefore, there is the demand for the riser buss improved in prior art.
Summary of the invention
Unconsummated this and other advantages are provided by a kind of riser buss used in casting die operation.This cover has main body, and main body has the sidewall extending to top from the bottom of this main body.In this riser buss, multiple chamber is formed on sidewall, and multiple chamber extends from top on the axial direction of main body.
In some instances, main body is cylindricality.In additional examples, main body is the frustoconical preferably with the diameter reduced equably from bottom to top.
In some instances, each in described multiple chamber is all preferably half-cylindric substantially, and each chamber all has preferably along the axis not comprising the virtual circumference regional alignment in chamber of lateral wall.In Multi-instance in these examples, each chamber has such radius, makes the axis in adjacent chamber around the distance of at least four radiuses in periphery interval of riser buss.In some instances, have to the equal subtend in each chamber from the angle (shaft centerline measurement from chamber) in the scope of about 120 ° to about 180 °.
In some instances, each chamber is all extending along outer wall in the major part of the distance of bottom from top, but each chamber all ends at the top of bottom.
In some instances, described multiple chamber is around the interval, periphery general uniform ground of main body.
In some instances, described main body is hollow substantially, and wherein, inwall or surface are cylindricalitys, or inwall or inner surface are with the mode corresponding with sidewall convergent from bottom to top.
Accompanying drawing explanation
By reading following detailed description and drawings, acquisition better understood disclosed embodiment, wherein, identical reference number represents identical parts, and in the accompanying drawings:
Fig. 1 is the stereogram of the riser buss formed before arranging air gap of the present invention well known in the prior art;
Fig. 2 be on the riser buss of Fig. 1, form air gap after the stereogram of riser buss that formed; And
Fig. 3 is for showing the stereogram of riser buss of the present invention in the mode being in the partial section on molded model (pattern, pattern, mould).
Detailed description of the invention
Usually, riser buss is the one in two types.Blind riser buss comprises hollow arch riser buss, and this riser buss is unlimited at bottom place.That is, top-open type riser buss normally annular is all unlimited at top and bottom.Manufacture blind riser buss more expensive.The purposes of blind riser buss usually keeps for special application.On the other hand, top-open type riser buss allows casting operation personal observations to the progress of foundry goods by making the horizontal plane of the motlten metal in riser buss visual.For patent specification, term " riser buss " is suitable for this two type usually, unless the one in specific reference two type.
Riser buss can insert in mold cavity after formation mould.This is commonly referred to insertable cover.Riser buss also can be arranged in be formed in and overlap on model around and mould, emits oral cavity to produce.This is commonly referred to " packed type (ram-up) " overlaps.Usually, in the prior art, the wall of cover has uniform thickness, and fits snugly in mould in the mode between cover and mould with insignificant gap.
And as a rule, riser buss is made up of heat-barrier material, before having in the chamber that to enter at motlten metal in casting mould, slow down the object of solidifying of the motlten metal be contained in riser buss.Alternately or in addition, riser buss can be made up of exothermic material, this exothermic material is intended to produce heat to keep the mobility of motlten metal.Typical riser buss is made up of the refractory material comprising staple fibre.This material can comprise the incendiary agent (fuels) such as aluminium or silicon, and they are for producing respective heat insulation oxide during the exothermic reaction in riser buss.The performance making every effort to optimize in Feeder Design comprises low-density and high porosity, this is because these performances are conducive to heat-proof quality.
Supply auxiliary (feeding aids) is for slowing down and controlling solidifying of rising head.These supplies are auxiliary can be heat insulation or heat release is overlapped or " hot top (hot topping, hot-top) ".Overlap by making to emit the material of the being aligned at least partially in oral cavity to form, by providing heat insulation or providing from the additional heat of exothermic material input or by both, to slow down the heat leakage of rising head.Hot top is heat-barrier material or the exothermic material at top for covering rising head after pouring, and wherein, rising head is unlimited by the top of mould.
Cover can be made up of multiple different material, comprises refractory fibre, sand, hollow refractory balls and other refractory materials.Usually by forming refractory fibre cover producing the upper deposit fiber of woven wire profiled member (form, profiled member) of inside dimension of cover and other compositions.Fiber and other compositions are water-based slurry and pass through vacuumize on the inside of this profiled member and be deposited on this profiled member.This generates the cover with slightly scabrid outer surface.By the mixture of the composition of drying and liquid cast binder (binder) being blown in mould/core box and the binder processed in mould, to produce the solid cover with the inside and outside shape formed by mould, and formation adds by sand or hollow sphere the cover that other compositions are made.The wall of the riser buss be made up of sand or hollow sphere usually than the riser buss be made up of fibrous material wall evenly, and this can make sand/hollow sphere riser buss be more suitable for the concept that carries out an invention.
Heat insulation or the exothermicity of riser buss determines primarily of the material for generation of cover.Such as, fibre fire-proof cover can have the density lower than mold materials usually, and due to lower thermal capacity and thermal conductivity, so provide heat insulation.Sand heat release cover can comprise the exothermic material of higher percent, the thermite be normally made up of the mixture of metallic aluminium powder and iron oxide.When rising head fills motlten metal, thermite ignites and provides auxiliary thermal source for rising head.
Now notice is turned to Fig. 1, show the stereogram of riser buss blank 10.This cover blank 10 is depicted as has frustoconical slightly, and wherein, diameter from bottom or substrate to top 12 equably and reduce monotonously.The top 12 illustrated and substrate are the axis perpendicular to blank 10.According to application, in some applications can desirably top surface be worn into bullet shape, especially when riser buss is blind type (the blind type) inserted in the mode of " filling ".Although riser buss blank 10 is blind types, it has flat top 12.
Be it should be obvious that by described embodiment, cover blank 10 can easily for having the cylindricality of diameter constant from top to substrate.Cover blank 10 shows smooth and has the outer wall 14 of continuous print texture, and this blank can be made up of multiple different material.
The stereogram of the embodiment 100 of the riser buss of creative concept is provided in Fig. 2.In detailed description of the invention 100, this embodiment is also described to blind type, and riser buss has and is formed in ten recesses on outer wall 14 or chamber 102.The plurality of chamber 102 is described as being arranged to the interval, circumference general uniform ground around outer wall 14, although interval is not critical for the effect of the riser buss formed uniformly.Although the main body of embodiment 100 is described to cylindricality, but for known to those skilled in the art be, the solution of some castings needs other shape, such as, shape that is oval or plane, but in the mode identical with the mode described by cylindricality embodiment, these shapes also can form multiple chamber.
Recess on embodiment 100 or chamber 102 are described as semi-cylinder substantially.The axis in each semi-cylinder chamber 102 aims at along outer wall 14 all generally, and respective axis reacts the characteristic that is slightly conical or cylindricality generally of overall riser buss 100.The top in each chamber 102 is open and provides " fan-shaped " periphery at top 12.Chamber 102 is described as the major part height axially extending riser buss 100 from the top of cover at cover, but each chamber ends at the top of substrate significantly.This causes the cylindricality ring of the substrate around riser buss, and its intention is to be formed with mould to seal closely, prevent liquid metal topple over period inflow chamber in.
About size and the quantity in chamber 102, can be expected that, when having the semi-cylinder chamber of radius R, the axis in adjacent chamber is around the distance of the circle spacing at least 4R of riser buss 100.In other words, although can prove desirably produce chamber time remove about 40% sidewall, preserve outer wall 14 initial surface at least half for contacting dies.
As described, chamber 102 is half-cylindric, that is, the axis in chamber is located along surface or outer wall 14 effectively, and has to subtend the angle of about 180 ° between the adjacent edge in given chamber.Usually, more preferably comprise the cylinder of the subtend being less than 180 ° (that is, by the outside of axis location on surface 14), instead of there is the cylinder of the subtend being greater than 180 ° (producing when the inside on surface 14 at axis location).The thin re-entrant angle surface that the edge formation that This prevents along chamber can be broken.Under any circumstance, the subtend part of cylinder is at least 120 °, and in almost all cases, is less than 180 °.
By utilizing these chambeies 102, when cover is inserted in mould, between cover and mould, form the air gap closed of respective numbers.The air in them can be caught in these chambeies 102.Compare with cover with mold materials, inflatable chamber 102 has low-down thermal capacity and thermal conductivity.These chambeies further reduce the contact area between mould and cover, thus reduce conductive heat loss.Chamber 102 also provides extra heat insulation.Because the original depth of riser buss blank can not increase to utilize chamber, so this can cause overlapping better performance, and cause lower cover weight and material cost.
Although all do not test, be contemplated that cover 100 can improve the efficiency of supply and allow to use less rising head and cover for raising casting yield.
Show the use of riser buss 100 in figure 3 in the mode of schematic perspective view, in the figure, riser buss is shown as and is arranged in mold former 40, and is more specifically arranged on the installation plunger 42 of molded model." clogging " is applied, riser buss to be directly arranged on model and molded sand compresses forms the rising head overlapped around cover in this application, paper, cardboard, plastic foil or similar cladding material can be disposed on cover, paper or similar material form the outer surface in inflatable chamber, and prevent the infiltration of molded sand when mould plug is in position.
As in figure 3 clearly shown in, owing to forming the technique of riser buss or the removal due to material at first, riser buss 100 is obviously hollow.Inner surface 104 preferably has the taper of from bottom to top 12, and except inner surface does not have chamber (only finding described chamber on the outer surface), this taper is corresponding with the taper of outer surface 14.
As mentioned above, the riser buss of the creative feature of description is so-called " blind " riser buss.But, in the technical scope of one skilled in the relevant art, the instruction of this description can be applied to and provide identical creative feature on top-open type riser buss.
This description illustrate and describes the preferred embodiment of the present invention, person of skill in the art will appreciate that, under the prerequisite still be within the scope of the present invention, can make a change the present invention and revise.Therefore, above-described multiple element can change or replace by providing identical result and falling into different elements in spirit of the present invention.
Claims (9)
1. the riser buss (100) used in casting die operation, described riser buss comprises main body, described main body has sidewall (14), described sidewall extends to top (12) from the bottom of described main body, it is characterized in that, described sidewall is formed multiple chamber (102), and described multiple chamber extends from described top on the axial direction of described main body.
2. riser buss according to claim 1, wherein, described main body is cylindricality.
3. riser buss according to claim 1, wherein, described main body is frustoconical, and described frustoconical preferably has the diameter reduced equably to described top from described bottom.
4. riser buss according to any one of claim 1 to 3, wherein, each chamber in described multiple chamber is all roughly half-cylindric, and each chamber all has the axis aimed at along described sidewall.
5. riser buss according to claim 4, is characterized in that, each chamber all has such radius, makes the axis in adjacent chamber around the distance of the described radius at least four, periphery interval of described riser buss.
6. riser buss according to claim 4, wherein, have to the equal subtend in each chamber from the shaft centerline measurement in chamber from the angle in the scope of about 120 ° to about 180 °.
7. according to riser buss in any one of the preceding claims wherein, wherein, each chamber is all extending along described sidewall at least major part of the distance of described bottom from described top, and ends at the top of described bottom.
8. according to riser buss in any one of the preceding claims wherein, wherein, described multiple chamber is all around the interval, periphery general uniform ground of described main body.
9. riser buss according to any one of claim 1 to 5, wherein, described main body is cardinal principle hollow, and the inwall of described main body or surface are corresponding with outer wall in shape, but described inwall or surface do not comprise described multiple chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261727932P | 2012-11-19 | 2012-11-19 | |
| US61/727,932 | 2012-11-19 | ||
| PCT/US2013/070644 WO2014078822A2 (en) | 2012-11-19 | 2013-11-19 | Riser sleeve with air gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104936722A true CN104936722A (en) | 2015-09-23 |
Family
ID=49681212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380060194.8A Pending CN104936722A (en) | 2012-11-19 | 2013-11-19 | Riser sleeve with air gap |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US20150298201A1 (en) |
| EP (1) | EP2919929B1 (en) |
| JP (1) | JP2015534906A (en) |
| KR (1) | KR102118990B1 (en) |
| CN (1) | CN104936722A (en) |
| BR (1) | BR112015011090A2 (en) |
| CA (1) | CA2891923A1 (en) |
| ES (1) | ES2819199T3 (en) |
| MX (1) | MX2015006228A (en) |
| PL (1) | PL2919929T3 (en) |
| RU (1) | RU2015122328A (en) |
| WO (1) | WO2014078822A2 (en) |
| ZA (1) | ZA201502947B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719222A (en) * | 2020-12-30 | 2021-04-30 | 安徽省恒泰动力科技有限公司 | Double-horn-mouth ceramic fiber riser sleeve and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001861B (en) * | 2014-06-13 | 2016-09-28 | 常州南车汽车零部件有限公司 | A kind of tide mould mo(u)ld top half places riser buss device and method |
| CN105598375B (en) * | 2016-01-11 | 2018-08-21 | 共享装备股份有限公司 | Casting outlet system |
| CN117324550B (en) * | 2023-11-02 | 2024-09-17 | 共赢装备制造有限公司 | Sand blocking cap device and use method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5017930Y1 (en) * | 1970-11-19 | 1975-06-02 | ||
| JPS51149123A (en) * | 1975-02-08 | 1976-12-21 | Meiwa Kagaku Kogyo | Heat insulation sleeves for riser in casting |
| US4526338A (en) * | 1984-04-23 | 1985-07-02 | General Foundry Products Corporation | High pressure molding riser |
| GB2141649B (en) * | 1983-06-20 | 1986-09-03 | Steetley Refractories Ltd | Riser sleeve for metal-casting moulds |
| US4981166A (en) * | 1989-06-27 | 1991-01-01 | Brown Foundry Systems, Inc. | Foundry paper riser and system therefor |
| US6209617B1 (en) * | 1996-11-06 | 2001-04-03 | American Metal Chemical Corporation | Sealing riser sleeve |
| US6422791B1 (en) * | 2000-04-04 | 2002-07-23 | Abb Vetco Gray Inc. | Riser to sleeve attachment for flexible keel joint |
-
2013
- 2013-11-19 BR BR112015011090A patent/BR112015011090A2/en not_active IP Right Cessation
- 2013-11-19 WO PCT/US2013/070644 patent/WO2014078822A2/en active Application Filing
- 2013-11-19 PL PL13798872T patent/PL2919929T3/en unknown
- 2013-11-19 ES ES13798872T patent/ES2819199T3/en active Active
- 2013-11-19 KR KR1020157016457A patent/KR102118990B1/en active IP Right Grant
- 2013-11-19 US US14/443,528 patent/US20150298201A1/en not_active Abandoned
- 2013-11-19 CA CA2891923A patent/CA2891923A1/en not_active Abandoned
- 2013-11-19 MX MX2015006228A patent/MX2015006228A/en unknown
- 2013-11-19 JP JP2015543103A patent/JP2015534906A/en active Pending
- 2013-11-19 CN CN201380060194.8A patent/CN104936722A/en active Pending
- 2013-11-19 RU RU2015122328A patent/RU2015122328A/en not_active Application Discontinuation
- 2013-11-19 EP EP13798872.1A patent/EP2919929B1/en active Active
-
2015
- 2015-04-29 ZA ZA2015/02947A patent/ZA201502947B/en unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5017930Y1 (en) * | 1970-11-19 | 1975-06-02 | ||
| JPS51149123A (en) * | 1975-02-08 | 1976-12-21 | Meiwa Kagaku Kogyo | Heat insulation sleeves for riser in casting |
| GB2141649B (en) * | 1983-06-20 | 1986-09-03 | Steetley Refractories Ltd | Riser sleeve for metal-casting moulds |
| US4526338A (en) * | 1984-04-23 | 1985-07-02 | General Foundry Products Corporation | High pressure molding riser |
| US4981166A (en) * | 1989-06-27 | 1991-01-01 | Brown Foundry Systems, Inc. | Foundry paper riser and system therefor |
| US6209617B1 (en) * | 1996-11-06 | 2001-04-03 | American Metal Chemical Corporation | Sealing riser sleeve |
| US6349757B1 (en) * | 1996-11-06 | 2002-02-26 | American Metal Chemical Corporation | Method of sealing using a riser sleeve |
| US6352100B1 (en) * | 1996-11-06 | 2002-03-05 | American Metal Chemical Corporation | Sealing riser sleeve |
| US20020079080A1 (en) * | 1996-11-06 | 2002-06-27 | American Metal Chemical Corporation | Sealing riser sleeve |
| US6422791B1 (en) * | 2000-04-04 | 2002-07-23 | Abb Vetco Gray Inc. | Riser to sleeve attachment for flexible keel joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719222A (en) * | 2020-12-30 | 2021-04-30 | 安徽省恒泰动力科技有限公司 | Double-horn-mouth ceramic fiber riser sleeve and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2819199T3 (en) | 2021-04-15 |
| WO2014078822A3 (en) | 2014-07-10 |
| MX2015006228A (en) | 2015-08-12 |
| EP2919929A2 (en) | 2015-09-23 |
| US20150298201A1 (en) | 2015-10-22 |
| ZA201502947B (en) | 2016-01-27 |
| KR20150101451A (en) | 2015-09-03 |
| RU2015122328A (en) | 2017-01-10 |
| KR102118990B1 (en) | 2020-06-04 |
| JP2015534906A (en) | 2015-12-07 |
| CA2891923A1 (en) | 2014-05-22 |
| PL2919929T3 (en) | 2020-12-28 |
| WO2014078822A2 (en) | 2014-05-22 |
| EP2919929B1 (en) | 2020-07-15 |
| BR112015011090A2 (en) | 2017-07-11 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150923 |