CN1668402A - Sleeve, manufacturing method thereof and mixture for the production of said sleeve - Google Patents
Sleeve, manufacturing method thereof and mixture for the production of said sleeve Download PDFInfo
- Publication number
- CN1668402A CN1668402A CNA028295897A CN02829589A CN1668402A CN 1668402 A CN1668402 A CN 1668402A CN A028295897 A CNA028295897 A CN A028295897A CN 02829589 A CN02829589 A CN 02829589A CN 1668402 A CN1668402 A CN 1668402A
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- China
- Prior art keywords
- sleeve
- exothermic
- metal
- gas
- resin
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Classifications
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- 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
-
- 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
- B22C9/084—Breaker cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
- B22D7/10—Hot tops therefor
- B22D7/104—Hot tops therefor from exothermic material only
Abstract
Procedure for the production of sleeves for mini-deadheads, in which a fluoride-free mixture, consisting of microspheres of aluminium silicate, an oxidizable metal, such as powdered aluminium, an oxidizable agent, magnesium as initiator element of the exothermic reaction, are introduced by blowing in a mould fitted with two cores to produce a sleeve provided with two openings, one of which is closed with a plug before being used.
Description
Invention field
The present invention relates to be used to obtain the exothermic sleeves of small-sized rising head (deadhead), the method by winding-up (blowing) and curing production exothermic sleeves and constitute the mixture of described sleeve, described small-sized rising head is used to obtain foundry goods, particularly ductile iron.
Background of invention
The production of metal casting comprises goes into poured with molten metal in the mould, by the cooling curing metal with make the workpiece demoulding of formation or separate by removing or destroy mould.
Mould can be a metal, and perhaps the mould gathering that can pass through different materials (pottery, graphite and mainly be sand) forms.These moulds need have some sprues (sprue) or cross gate (runner) is used to be communicated with internal cavities and outside, and by described sprue or cross gate, poured with molten metal is gone in molding or the casting section.Because the contraction of metal in the process for cooling process must be predicted certain overflow in the mould of filling with standby motlten metal, its objective is the formation rising head, quasi-complement is repaid at intrametallic contraction or cavity.The purpose of rising head be when metal when this shrinks, the supply workpiece, owing to this reason, metal must the rising head internal ratio in workpiece, keep the longer time liquid state.For this reason, rising head covers with some sleeves usually, and described sleeve is made up of insulation and/or exothermic material, and it slows down the cooling that is included in the metal in the rising head, in order that guarantee the mobile of when generation cavity hole in foundry goods metal metal.
Use exothermic sleeves to make around rising head and may reduce the contraction problem and improve casting quality, this makes can use less rising head (small-sized rising head), thereby improves the contact surface of producing and reducing rising head and foundry goods, and its minimizing is economized on the use of funds.
Known exothermic sleeves is being initial by fiber fireproof material, in conjunction with the mixtures of material that can produce exothermic reaction that constitutes by oxidizable metal, oxidant and cosolvent or exothermic reaction initator, fiber based on the wet method manufacturing, wherein in oxidizable metal, aluminium is the most normal use traditionally, and described exothermic reaction initator is fluorinated compound traditionally.Oxidizable metal, oxidized when mixing with oxidant and cosolvent and being exposed to high following time of heat, thereby with the progress release heat pro rata of reaction.
The sand of also known exothermic sleeves in ductile iron foundry, to understand very much.The composition of these high density sand base sleeves contains relatively large aluminium, and its consumption is very big, so that the heat that is produced is very high.Before the metal temperature that advantageously influences in the rising head, this heat is necessary to the temperature of rising sand base sleeve.
In 1997, introduced not fibrous sleeve technology, thereby the novel substitute technology of exothermic sleeves is provided.Patent application WO97/00172 discloses a kind of winding-up and cold-box solidifies (cold core curing) method, based on the mixture that can jet into mould, accurate heat release of manufacturing dimension and/or insulating sleeve, described mixture by alumina content less than the alumina silicate microballoon of 38wt%, cold-box solidify use adhesive and randomly some non-fibers fillings expect to form.The exemplary composition of production exothermic sleeves comprises hollow microsphere, aluminium powder, iron oxide and ice crystal conduct the fluoridize flux of alumina content less than 38wt%.
Sleeve is present in foundary industry in order to obtain so-called small-sized rising head at present, and the function of described small-sized rising head also is that liquid metals is fed in the workpiece, and the latter shrinks in the process of solidifying simultaneously.
Be that with the essential difference of the exothermic sleeves of routine latter's long period keeps metal liquid, thus for identical feed operation, the volume that metal is required, promptly rising head is less.
This result realizes by the thermal discharge that increases sleeve, but the heat release of this increase causes non-required secondary face problem, for example:
1. excessive residual aluminum in rising head is cast subsequently again, causes having in the fusion workpiece problem of hole.
The defective that is called as " flake " is the face crack in foundry goods, and it comes from the accumulation of the material that produces in the recovery of the pollution sand that is essentially aluminium, and wherein said aluminium is found in exothermic sleeves in high proportion.
Can overcome this defective by the hollow microsphere that uses the alumina silicate for example have low content oxidation aluminium, as described in the WO97/00172.
2. the destruction of nodules (nodules) in the contact area of sleeve and workpiece, this destruction is because of scrapping with the inconsistent workpiece that causes of the regulation of the desired nodules of the buyer.
Second problem comes from the excessive fluorine of fluoridizing material that is used as initiation material in exothermic reaction traditionally and handles.
For fear of this problem, sleeve or do not contact with workpiece, this makes needs to use more metal, perhaps use a kind of intermediate, the biscuit of no fluoride is adhered to sleeve cast gate (mouth) with it and goes up and have suitable hole, center, contacts with workpiece to prevent actual sleeve.This biscuit, its production and be fixed on the sleeve are indicating significant surcharge.
Summary of the invention
The present invention derives from and is equipped with sleeve to obtain the challenge of small-sized rising head, described sleeve does not require the biscuit that uses no fluoride, do not require that any other factors avoids contacting of sleeve and workpiece yet, in addition, it also produces breach in rising head, promote it subsequently with water separating of foundry goods, all these are based on the not fluorine-containing mixture of jetting, described mixture can produce the exothermic reaction that the heat that requires is provided.
Its starting point is, the mixture that at first will constitute the sleeve of no fluoride is blown into mould, and described mould has two cores, on the one hand, described core makes may extract the sleeve of curing, on the other hand, described core makes may obtain two holes, and one in these two holes in the actual cast gate of sleeve, this hole has the peripheral chamfer of two inside, in casting constantly, when sleeve was carried out its function, described chamfering can produce suitable breach in rising head.Another hole is in the matrix relative with cast gate, after sleeve solidifies, with airtight described another hole of cheap material, this is because in foundry technology process, the sleeve zone does not have operating function, and only needs airtightly, falls in the rising head in order that prevent sand or other undesired substance.
By cold-box winding-up and the mixture that solidifies no fluoride subsequently, obtain to be used to obtain the sleeve of small-sized rising head, the mixture of described no fluoride comprises the hollow ball of (a) alumina silicate; (b) comprise following exothermic ingredient:
A) insulation/refractory material,
B) oxidizable metal,
C) oxidant,
D) as the magnesium of reaction initiator material,
E) catalyst of purifying in cold-box.
The hollow microsphere of alumina silicate is basically as insulating materials.When needs improve the mechanical performance of sleeve, also can use the mixture of these alumina silicate balls and sand, but impair insulating properties.
As oxidizable metal, can use aluminium, silicon and other metal.The aluminium of preferred meticulous and coarse powder combining form.
As oxidant, can use the oxide of nitrate, chlorate, permanganate and metal oxide such as iron and magnesium, can use the bond of these compounds certainly.
As the initator of exothermic reaction, use magnesium.
In case this mixture is blown into mould, then extract sleeve and solidify, with the airtight hole relative with cast gate of stopper, described stopper can be by manufacturings such as plastics, timber, sawdust, sand, even available and sleeve identical materials manufacturing.
Use these sleeves to make and to make high-quality workpiece with lower cost, and the destruction that does not have the graphite nodules in the contact zone of rising head workpiece, its cost are slightly less than other conventional method that contacts by the intermediate biscuit based on rising head and workpiece that produces similar mass workpiece.
The accompanying drawing summary
Fig. 1 has illustrated with the conventional method of winding-up that belongs to the prior art state and cold-box curing, the step of producing sleeve.In the case, the mixture of producing sleeve is blown in the mould (3) with common core (2) [Figure 1A]; Next, solidify the sleeve (1) and the demoulding, thereby stay the hole [Figure 1B] of intending being used for rising head (4); At last, apply (6) the intermediate biscuit (5) [Fig. 1 C] crossed for melt-flow that has hole.
Fig. 2 has illustrated the winding-up of the disclosure according to the present invention and the method that cold-box solidifies, the step of production exothermic sleeves.
Detailed Description Of The Invention
On the one hand, the present invention relates to solidify the production exothermic sleeves to obtain the method for small-sized rising head by winding-up and cold-box, this method comprises:
(A) by winding-up, in the cold-box curing mold, introduce the mixture that can jet in the space of between mould and two cores, determining, obtain uncured sleeve in its both ends open, wherein said two cores are two chamferings at the cast gate internal shaping of sleeve, and described mixture comprises:
A) based on the composition of no fluoride that is used to produce sleeve of following substances:
A.1) insulation/refractory material,
A.2) exothermic mixtures, described exothermic mixtures comprises oxidizable metal, can produce the oxidant of exothermic reaction and the magnesium of the initator material that conduct is reacted,
B) be used for the adhesive that cold-box solidifies;
The uncured sleeve of preparation in (A) is contacted with the cold-box curing catalysts;
(C) sleeve from (B) is solidified;
(D) from mould, take out the sleeve that solidifies; With
(E) in the hole of the matrix relative, insert stopper with the cast gate of sleeve.
Can understand according to Fig. 2, (referring to Fig. 1) is opposite with the conventional method that belongs to the prior art state, in the method that the present invention discloses, in the space of determining between the mould (3) that the mixture of the no fluoride that the production exothermic sleeves is used is blown into mould inside and the core (2,2 ') [Fig. 2 A].Core (2,2 ') allows to take out subsequently under the situation of sleeve at the same time, produces two chamferings (8) in its cast gate.When sleeve (1) solidifies,, stay the hole [Fig. 2 B] of intending being used for rising head (4) with its demoulding; At last, insert stopper (9) at the openend of sleeve (1), in order that prevent in the casting operation process, sand or any other undesired substance enter the cavity interior [Fig. 2 C] of intending being used for rising head.
Two chamferings (8) of sleeve will produce groove or formal suitable groove (slot) in rising head, it is determined and promotes the cutting production line to separate rising head from workpiece.
Insulation/the refractory material (a.1) that is present in the composition of producing the no fluoride that sleeve uses is a kind of material that consists essentially of the alumina silicate hollow microsphere, but it also can contain a certain amount of sand, condition is by sacrificing insulating capacity, wishing to improve the mechanical performance of sleeve.
Usually, with respect to the composition of total no fluoride, the content of insulation/refractory material (a.1) will be between 30 to 70wt%.
The exothermic material (a.2) that is present in the composition of producing the no fluoride that sleeve uses comprises oxidizable metal and can produce the oxidant of exothermic reaction that wherein said exothermic material comprises:
(i) as the magnesium of the initator material of exothermic reaction, together with one or more oxidizable metals, the mixture of preferred efflorescence and granulation aluminium,
(ii) can and produce the oxidant of exothermic reaction with the oxidizable metal reaction under the pouring temperature of metal, described oxidant is selected from the salt of (a) alkali metal or alkaline-earth metal, for example the nitrate of alkali metal or alkaline-earth metal, chlorate and permanganate; (b) metal oxide, for example oxide of iron and manganese, the preferably oxide of iron; (c) (a) and mixture (b).The non-fibers form of described exothermic material (a.2) for being blowed.
The performance of producing the composition of exothermic sleeves of the present invention is, forms described composition under the situation that does not contain the inorganic fluoride cosolvent that is used as the exothermic reaction initator habitually.Use the magnesium of reaction at a lower temperature to substitute it, thereby the exothermic reaction that produces between oxidizable metal and oxidant begin to become early.
Reaction between oxidizable metal and oxidant is the exothermic reaction that produces heat, thereby improves the heating properties of exothermic sleeves.So the temperature loss of melted material descends in sprue, wherein said sprue keeps more red-hot and the long period is a liquid.
The degree that depends on exothermicity wish to obtain sleeve, and with respect to the composition of producing total no fluoride that sleeve uses, the content that is present in the oxidizable metal in the exothermic material (a.2) is 20 to 30wt%.
Only by using insulating materials (a.1) and the exothermic material (a.2) that is present in right amount in the component (A) with suitable part by weight, the method that the present invention discloses makes can obtain to have and insulate and the exothermic sleeves of the required balance of exothermicity.
The sleeve manufacture method that discloses according to the present invention, the cold-box cure adhesive that can use in the mixture of producing sleeve is known.In principle, can use any cold-box cure adhesive, it can keep the composition of producing the no fluoride that sleeve uses is form of sleeve and polymerization in the presence of curing catalysts.For example, can use in gas phase phenol resin (phenol resin) by the appropriate catalyst activation, phenol-polyurethane resin, epoxy acrylic resin, alkaline phenol resin, silicate resin etc.In a special embodiment, this cold-box cure adhesive is selected from and passes through SO
2Epoxy acrylic resin of (gas) activation and the phenol-polyurethane resin (being called as cold-box cure adhesive EXACTCAST (Ashland)) that activates by amine (gas).
The aequum of cold-box cure adhesive that is to say for keeping form of sleeve effectively and allowing its consumption that effectively solidifies, such as allow after curing process, to handle the consumption the sleeve of producing.For example, produce the composition of sleeve with respect to total being used to, the consumption of cold-box cure adhesive is 1 to 10%.
Apply cold-box with gas form and solidify and to use catalyst, and make it to flow through sleeve and reach controlled denseness until the latter.Catalyst in gas phase can be amine, carbon dioxide, methyl formate, sulfur dioxide etc., and this depends on employed cold-box cure adhesive.
Operate and select to produce sleeve each component suitably with composition, can obtain to have the exothermic sleeves of inside and outside these two kinds of dimensional accuracies, described exothermic sleeves can easily be connected on the molding assembly of foundary industry after making under not needing to carry out the situation of additional manipulation.
The obtainable exothermic sleeves of method that discloses according to the present invention constitutes extra aspect of the present invention.
Can understand according to Fig. 2, comprise by sleeve provided by the invention (1):
(i) main body, described main body around intend comprising the hole of rising head (4) and on its cast gate, have two chamferings (8) and
The (ii) stopper in the matrix relative (9) with cast gate.
Be present in two chamferings (8) in the sleeve provided by the invention and be owing to due to the combination of 2 cores (2,2 ') in the winding-up process of mixture.Two chamferings (8) have been determined groove or groove in rising head, it promotes to separate rising head from foundry goods.
Because by the manufacture method of sleeve provided by the invention, this method comprises the combination of 2 cores, therefore produce two open ends.Two chamferings (8) are contained in one of described open end, and another openend is airtight with stopper (9) simultaneously, in order that in the process that sleeve is installed on the mould and certainly in the casting operation process, prevents that sand or any other undesired substance from entering sleeve inner.Therefore, described stopper (9) neither has the structure purpose, do not disturb the formation or the effect of rising head yet, for this reason, in fact employed material can be any material in the production of stopper, advantageously be inexpensive materials, as plastics, timber, sawdust, paper, sand etc., perhaps even constitute the real material of sleeve.
As a comparison, for identical heat release capacity, but following table provides the injecting mixed thing in order to obtain to have the exothermic sleeves of fluoridizing with no fluoride cosolvent of the present invention.
The cost of the mixture of identical heat release degree
| Fluorine-containing small-sized rising head | Not fluorine-containing small-sized rising head | Small-sized rising head by the sand manufacturing | |
| ????％ | ????％ | ????％ | |
| Microballoon | ????56.0％ | ????54.0％ | |
| Meticulous microballoon aluminium | ????22.0％ | ????22.0％ | ????22.0％ |
| Coarse aluminium | ????6.0％ | ????6.0％ | ????6.0％ |
| ??Fe 3O 4-magnetic iron ore | ????4.0％ | ????4.0％ | ????4.0％ |
| Ice crystal | ????4.0％ | ????4.0％ | |
| ??KNO 3-potassium nitrate | ????8.0％ | ????10.0％ | ????8.0％ |
| Magnesium | ????4.0％ | ||
| Sand 60/70 | ????56.0％ | ||
| The cost of every kilogram of mixture | ????100.0％ | ????100.0％ | ????100.0％ |
Claims (11)
1. solidify the method for producing the exothermic sleeves that is used for casting mould by winding-up and cold-box, this method comprises:
(A) by winding-up, introduce the mixture that is used for the production exothermic sleeves in the space of between mould and two cores, determining, the uncured sleeve that acquisition is all open at its two ends, wherein the opening of cast gate has inner two chamfering, another opening is normally flat simultaneously, and the described mixture that wherein is used for the production exothermic sleeves comprises:
A. the composition of no fluoride that is used to produce sleeve that comprises following substances:
A.1) insulation/refractory material,
A.2) exothermic mixtures, described exothermic mixtures can produce the oxidant of exothermic reaction and the magnesium of the initator material that conduct is reacted based on oxidizable metal;
B) be used for the adhesive that cold-box solidifies;
(B) the uncured sleeve that makes preparation in (A) contacts with the catalyst that is used to solidify described uncured sleeve;
(C) sleeve from (B) is solidified;
(D) from mould, take out the sleeve that solidifies; With
(E) in the hole of the matrix relative, insert stopper with the cast gate of sleeve.
2. the process of claim 1 wherein that the described insulating materials (a.1) with fire resistance is the alumina silicate of hollow microsphere form.
3. the process of claim 1 wherein that described oxidizable metal is an aluminium, preferably the mixture of the meticulous and coarse powder of this metal.
4. the process of claim 1 wherein that described oxidant is selected from the salt of alkali metal or alkaline-earth metal, metal oxide and composition thereof.
5. claim 1 and 4 method, wherein said oxidant is selected from nitrate, chlorate and the permanganate of alkali metal or alkaline-earth metal, the oxide of iron, oxide of manganese and composition thereof.
6. the process of claim 1 wherein that described exothermic material (a.2) is non-fibers form, that is to say the form of can jetting.
7. the process of claim 1 wherein that described cold-box cure adhesive is selected from phenol resin, phenol-polyurethane resin, acrylic resin, alkaline phenol resin and silicate resin.
8. the method for claim 12, wherein said cold-box cure adhesive is selected from and passes through SO
2Acrylic resin of (gas) activation and the phenol-polyurethane resin that activates by amine (gas).
9. the process of claim 1 wherein that in step (B) the uncured sleeve that makes in step (A) preparation contacts with catalyst in the gas phase that is being suitable for solidifying described sleeve.
10. the process of claim 1 wherein that the described catalyst that is used for solidifying uncured sleeve is the catalyst that is selected from following gas phase: the gas amine of activation phenol-polyurethane resin; The SO of activation acrylic resin
2(gas); Activate the CO of alkaline phenol resin
2(gas) or methyl formate (gas); CO with the activated silicic acid sodium resin
2(gas).
11. the sleeve of claim 1, it is characterized in that, when by molding, the demoulding and curing, it has the confession of watering melt and enters, described cast gate must form the rising head with inner circumferential chamfering, described peripheral chamfer will produce groove or the suitable groove of geometry in rising head, simultaneously with plastics, timber, sawdust, sand or even with the airtight hole relative of stopper that constitutes the sleeve same material with cast gate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/ES2002/000422 WO2004022262A1 (en) | 2002-09-09 | 2002-09-09 | Sleeve, production method thereof and mixture for production of same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1668402A true CN1668402A (en) | 2005-09-14 |
| CN1305601C CN1305601C (en) | 2007-03-21 |
Family
ID=31970554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028295897A Expired - Fee Related CN1305601C (en) | 2002-09-09 | 2002-09-09 | Sleeve, manufacturing method thereof and mixture for the production of said sleeve |
Country Status (16)
| Country | Link |
|---|---|
| US (2) | US20050247424A1 (en) |
| EP (1) | EP1543897B1 (en) |
| JP (1) | JP4413780B2 (en) |
| CN (1) | CN1305601C (en) |
| AT (1) | ATE365086T1 (en) |
| AU (1) | AU2002336110B2 (en) |
| BR (1) | BR0215879B1 (en) |
| CA (1) | CA2498240C (en) |
| DE (1) | DE60220841T2 (en) |
| DK (1) | DK1543897T3 (en) |
| ES (1) | ES2288560T3 (en) |
| HK (1) | HK1078288A1 (en) |
| MX (1) | MXPA05002612A (en) |
| PT (1) | PT1543897E (en) |
| SI (1) | SI1543897T1 (en) |
| WO (1) | WO2004022262A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549387B (en) * | 2009-05-18 | 2011-04-20 | 谢锦荣 | A cylindrical insulating riser base |
| CN102271836A (en) * | 2008-11-20 | 2011-12-07 | 亚世科化学补缩***有限公司 | Molding material mixture and riser for casting aluminum |
| CN102328027A (en) * | 2011-07-13 | 2012-01-25 | 中核苏阀横店机械有限公司 | Heat insulation riser anti-plugging structure |
| CN103551515A (en) * | 2013-11-22 | 2014-02-05 | 哈尔滨理工大学 | Exothermic heat-preservation feeder for casting and preparation method of feeder |
| CN103586416A (en) * | 2013-11-28 | 2014-02-19 | 哈尔滨理工大学 | Fluoride-free exothermic insulating riser and preparation method thereof |
| CN108296446A (en) * | 2018-01-25 | 2018-07-20 | 宁夏共享能源有限公司 | Casting incubation riser of persistent fever and preparation method thereof |
| CN111889629A (en) * | 2020-08-14 | 2020-11-06 | 欧区爱铸造材料（中国）有限公司 | Fluorine-free efficient exothermic agent for heating casting riser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4749948B2 (en) * | 2006-06-23 | 2011-08-17 | 滲透工業株式会社 | Exothermic molding for casting |
| ES2663280T3 (en) | 2010-06-08 | 2018-04-11 | Ask Chemicals España, S.A. | Method of manufacturing a metal part |
| RU2601721C2 (en) * | 2015-03-11 | 2016-11-10 | федеральное государственное бюджетное образовательное учреждение высшего образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" (НГТУ) | Exothermal mixture for heating lost heads of steel and cast iron castings |
| USD872781S1 (en) | 2018-04-13 | 2020-01-14 | Foseco International Limited | Breaker core |
| BR112023021300A2 (en) | 2021-04-16 | 2023-12-12 | Foseco Int | COMPOSITION FOR MANUFACTURING A REFRACTORY ARTICLE, AND, REFRACTORY ARTICLE |
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| CA941109A (en) * | 1971-08-17 | 1974-02-05 | Canada Wire And Cable Limited | Welding of hollow core aluminum conductors |
| DE2146031A1 (en) * | 1971-09-15 | 1973-03-22 | Eduard Dipl Ing Baur | CASTING FORM AND CUP-SHAPED FUNNELS FOR CASTING FORMS |
| JPS4931535A (en) * | 1972-07-22 | 1974-03-22 | ||
| US4008109A (en) * | 1975-07-01 | 1977-02-15 | Chemincon Incorporated | Shaped heat insulating articles |
| US4574869A (en) * | 1981-01-22 | 1986-03-11 | Foseco International Limited | Casting mould, and cavity former and sleeve for use therewith |
| DE3600847A1 (en) * | 1986-01-14 | 1987-07-30 | Foseco Ges Fuer Chemisch Metal | METHOD, DEVICE AND FEEDING INSERTS FOR THE PRODUCTION OF CASTING MOLDS |
| US5252526A (en) * | 1988-03-30 | 1993-10-12 | Indresco Inc. | Insulating refractory |
| GB2260285B (en) * | 1991-10-03 | 1994-10-12 | Masamitsu Miki | Riser sleeve with breaker core |
| GB9308363D0 (en) * | 1993-04-22 | 1993-06-09 | Foseco Int | Refractory compositions for use in the casting of metals |
| ES2134729B1 (en) * | 1996-07-18 | 2000-05-16 | Kemen Recupac Sa | IMPROVEMENTS INTRODUCED IN OBJECT APPLICATION FOR A SPANISH INVENTION PATENT N. 9601607 FOR "PROCEDURE FOR THE MANUFACTURE OF EXACT SLEEVES AND OTHER ELEMENTS OF MAZAROTAJE AND FEEDING FOR CAST MOLDS. |
| JP3153991B2 (en) * | 1997-10-01 | 2001-04-09 | 正光 三木 | Feeder sleeve |
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| US6360808B1 (en) * | 2000-06-19 | 2002-03-26 | Ashland Inc. | Exothermic sleeve compositions containing aluminum dross |
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-
2002
- 2002-09-09 AT AT02770003T patent/ATE365086T1/en active
- 2002-09-09 CN CNB028295897A patent/CN1305601C/en not_active Expired - Fee Related
- 2002-09-09 BR BRPI0215879-5A patent/BR0215879B1/en active IP Right Grant
- 2002-09-09 US US10/526,856 patent/US20050247424A1/en not_active Abandoned
- 2002-09-09 WO PCT/ES2002/000422 patent/WO2004022262A1/en active IP Right Grant
- 2002-09-09 DE DE60220841T patent/DE60220841T2/en not_active Expired - Lifetime
- 2002-09-09 PT PT02770003T patent/PT1543897E/en unknown
- 2002-09-09 EP EP02770003A patent/EP1543897B1/en not_active Expired - Lifetime
- 2002-09-09 JP JP2004533521A patent/JP4413780B2/en not_active Expired - Fee Related
- 2002-09-09 CA CA002498240A patent/CA2498240C/en not_active Expired - Lifetime
- 2002-09-09 ES ES02770003T patent/ES2288560T3/en not_active Expired - Lifetime
- 2002-09-09 DK DK02770003T patent/DK1543897T3/en active
- 2002-09-09 MX MXPA05002612A patent/MXPA05002612A/en active IP Right Grant
- 2002-09-09 AU AU2002336110A patent/AU2002336110B2/en not_active Ceased
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271836A (en) * | 2008-11-20 | 2011-12-07 | 亚世科化学补缩***有限公司 | Molding material mixture and riser for casting aluminum |
| CN101549387B (en) * | 2009-05-18 | 2011-04-20 | 谢锦荣 | A cylindrical insulating riser base |
| CN102328027A (en) * | 2011-07-13 | 2012-01-25 | 中核苏阀横店机械有限公司 | Heat insulation riser anti-plugging structure |
| CN103551515A (en) * | 2013-11-22 | 2014-02-05 | 哈尔滨理工大学 | Exothermic heat-preservation feeder for casting and preparation method of feeder |
| CN103586416A (en) * | 2013-11-28 | 2014-02-19 | 哈尔滨理工大学 | Fluoride-free exothermic insulating riser and preparation method thereof |
| CN108296446A (en) * | 2018-01-25 | 2018-07-20 | 宁夏共享能源有限公司 | Casting incubation riser of persistent fever and preparation method thereof |
| CN111889629A (en) * | 2020-08-14 | 2020-11-06 | 欧区爱铸造材料（中国）有限公司 | Fluorine-free efficient exothermic agent for heating casting riser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1305601C (en) | 2007-03-21 |
| BR0215879B1 (en) | 2014-01-21 |
| ATE365086T1 (en) | 2007-07-15 |
| DE60220841T2 (en) | 2008-02-28 |
| US20050247424A1 (en) | 2005-11-10 |
| HK1078288A1 (en) | 2006-06-09 |
| AU2002336110B2 (en) | 2009-09-03 |
| EP1543897B1 (en) | 2007-06-20 |
| CA2498240C (en) | 2009-05-19 |
| PT1543897E (en) | 2007-09-12 |
| JP2005537935A (en) | 2005-12-15 |
| BR0215879A (en) | 2005-08-02 |
| CA2498240A1 (en) | 2004-03-18 |
| EP1543897A1 (en) | 2005-06-22 |
| JP4413780B2 (en) | 2010-02-10 |
| DE60220841D1 (en) | 2007-08-02 |
| WO2004022262A1 (en) | 2004-03-18 |
| SI1543897T1 (en) | 2007-12-31 |
| ES2288560T3 (en) | 2008-01-16 |
| MXPA05002612A (en) | 2005-05-05 |
| DK1543897T3 (en) | 2007-09-24 |
| US20080121363A1 (en) | 2008-05-29 |
| AU2002336110A1 (en) | 2004-03-29 |
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