WO2006003945A1 - 鋳型造型方法およびその鋳型 - Google Patents
鋳型造型方法およびその鋳型 Download PDFInfo
- Publication number
- WO2006003945A1 WO2006003945A1 PCT/JP2005/011968 JP2005011968W WO2006003945A1 WO 2006003945 A1 WO2006003945 A1 WO 2006003945A1 JP 2005011968 W JP2005011968 W JP 2005011968W WO 2006003945 A1 WO2006003945 A1 WO 2006003945A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- aggregate mixture
- weight
- aggregate
- mold
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
- B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B22C1/2246—Condensation polymers of aldehydes and ketones
- B22C1/2253—Condensation polymers of aldehydes and ketones with phenols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/24—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of oily or fatty substances; of distillation residues therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/26—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of carbohydrates; of distillation residues therefrom
Definitions
- the present invention relates to a method of forming a saddle shape from particulate aggregate using a plurality of types of water-soluble binders as a binder, and a saddle shape manufactured by the method.
- articulate aggregate refers to silica sand, alumina sand, olivine sand, chromite sand, gyrcon sand, mullite sand, various artificial sands (or artificial aggregates) and the like. It is a heat-resistant granular material composed of one or more kinds.
- a vertical molding method for molding a vertical mold according to the present invention includes:
- Filled fluid aggregate mixture force This comprises solidifying the aggregate mixture by evaporating water to solidify the aggregate mixture.
- the content of the water-soluble binder in the aggregate mixture is preferably 0.1 to 5.0 parts by weight with respect to 100 parts by weight of the particulate aggregate. This is because when the amount is less than 0.1 part by weight, a saddle shape having sufficient strength cannot be obtained, and when the amount exceeds 5.0 parts by weight, the obtained saddle shape has excessive strength.
- the mold formed by the mold forming method of the present invention is, for example, a core used for forging an iron-based metal.
- a molten iron-based metal is poured into such a core, the water-soluble binder easily volatilizes or decomposes, so that the core can be easily removed from the porridge.
- the water-soluble binder in the method of the present invention is a binding agent that is soluble in water at room temperature and hardens by evaporating water, such as sugars, proteins, and fats.
- saccharides starch or derivatives thereof, and polysaccharides such as saponin, or -saccharides such as sugar are particularly preferable.
- sugar is sucrose and is a saccharide in which glucose and fructose are combined one by one.
- examples of sugar include white sugar and granulated sugar.
- poly Bulle alcohol or a derivative thereof saponification degree 80-95 mole 0/0 preferred is soluble phenolic ⁇ to room temperature water U,.
- phenol resin is diluted with an organic solvent, but water-soluble phenol resin is used here.
- Examples of the polybulal alcohol derivative include polybulal alcohols containing an acetic acid group, a carboxyl group, a butyric acid group, a silanol group, and the like.
- starch examples include potato, corn, tapio, and pregelatinized starch and dextrin derived from wheat and the like.
- starch derivatives include etherified starch, ester starch and cross-linked starch.
- the water-soluble binder used in the present invention is easily available.
- pregelatinized starch, dextrin and sugar are inexpensive.
- the content of phenol resin in the aggregate mixture is preferably 0.05 to 0.50 part by weight with respect to 100 parts by weight of the particulate aggregate. That is, the saddle type according to the present invention is 0.05 to 0.50 weight per 100 parts by weight of the particulate aggregate. It is preferable to contain some phenolic resin. If the phenolic resin is less than 0.05 part by weight based on 100 parts by weight of the particulate aggregate, a mold having sufficient heat resistance cannot be obtained, and if it exceeds 0.50 part by weight, This is because the effect is hindered.
- the bonds between the particles that are coated with the water-soluble binder and constitute the aggregate are reinforced, and the water-soluble binder is water-soluble. Since the reaction between the water-soluble binder and water molecules is less likely to occur, the molded mold can maintain sufficient strength characteristics even under high humidity.
- the cross-linking agent used in the method of the present invention includes compounds having a carboxyl group such as oxalic acid, maleic acid, succinic acid, succinic acid, butanetetracarboxylic acid and methyl beryl ether which are cross-linked by an ester bond.
- a maleic acid copolymer, isobutylene, and an aqueous solution such as a maleic anhydride copolymer are compounds having a carboxyl group.
- a cross-linking agent that forms an ester bond that is, a cross-linking agent having a carboxyl group, is used at the time of casting or pouring the mold, and generates little harmful gas.
- the addition amount of the crosslinking agent in the method of the present invention is preferably 5 to 300% by weight based on the water-soluble binder. If the amount is less than 5% by weight, the effect of the crosslinking reaction is insufficient, and sufficient strength cannot be maintained when the obtained mold is placed under high humidity. Moreover, even if it exceeds 300% by weight, the strength that can maintain sufficient strength when the obtained mold is placed under high humidity, the effect is not different from the effect of 300% by weight.
- the cross-linking agent is preferably used as an aqueous solution.
- concentration is preferably 10% by weight or more.
- the cross-linking reaction in the method of the present invention is performed before or after the saddle is removed from the vertical molding space.
- the cross-linking reaction is caused after taking out the mold from the molding space, for example, it takes about 20 minutes in an atmosphere at a temperature of 220 ° C, or about 10 minutes in an atmosphere at a temperature of 250 ° C.
- the crosslinking reaction may be performed in a shorter time at the temperature.
- the aggregate mixture obtains excellent fluidity by stirring and bubbling the aggregate mixture to generate a large number of fine bubbles.
- the foam ratio of the aggregate mixture depends on the amount of water-soluble binder added. According to experiments, 50 to 80% is preferable.
- Bubble ratio (%) ⁇ (volume of the entire mixture) (volume of particulate aggregate, water-soluble binder and water) / (volume of the entire mixture) ⁇ X 100
- the fluidity can be improved when the fluid aggregate mixture is pressurized and filled into the vertical molding space. This foaming causes the particulate aggregate to flow and be uniformly dispersed.
- the agitation means for foaming the aggregate mixture may use a stirrer different from that used in combination with the agitator used for mixing the components of the aggregate mixture. Agitation produces foamed air and can be evenly dispersed in the flowable aggregate mixture.
- the vertical molding space may be filled by pressurizing the fluid aggregate mixture with a solid pressing means or with a compressed gas.
- a cylinder containing the flowable aggregate mixture can be used.
- a piston (solid pressing means) is pressed into the cylinder into which the fluid aggregate mixture is charged, and the fluid aggregate mixture is discharged by a cylinder to fill the vertical molding space.
- the upper end opening of the cylinder is hermetically closed, and compressed air (compressed gas) is supplied to the upper surface of the fluid aggregate mixture charged into the cylinder to pressurize the same as when using a piston. Can be filled properly.
- the steam or the like that heats the mold or the like constituting the vertical molding space to a high temperature is used. May irradiate the flowable aggregate mixture with microwaves.
- the vertical molding space filled with the fluid aggregate mixture may be left in a vacuum environment and vacuum dried, or the fluid aggregate mixture in the vertical molding space may be removed. It may be air-dried.
- the saddle mold of the present invention contains 0.05 to 0.50 part by weight of phenolic rosin relative to 100 parts by weight of particulate aggregate, so that heat resistance is improved. It can also be used for high-temperature molten metal. Such a saddle type is particularly suitable for use as a core used for forging ferrous metals.
- the aggregate mixture with improved fluidity can be efficiently filled into a molding space having a complex contour, a desired saddle shape can be obtained.
- the core was molded.
- the following aggregate mixture A was obtained.
- Particulate aggregate heat-resistant granular material: quartz sand (flattery sand) 100 parts by weight
- Binder Water-soluble binder (binding agent): Polybulal alcohol (JP—05 Nippon Vinegar 'Poval) 0.3 parts by weight and starch (dextrin NSD—L-Sushi) 0.8 parts by weight
- Water-soluble phenol resin Phoenix 510AL-2 (manufactured by Kobe Science Co., Ltd.) 0.3 part by weight
- Crosslinking agent Chenic acid (manufactured by Fuso Chemical) 0.8 part by weight
- Aggregate mixture having the composition shown in Table 1, Mix 5 parts by weight of water with a mixer (Aikosha Tabletop Mixer) and stir and mix for about 3 minutes at a rotation speed of about 200 rpm. (Manufacturing process).
- This foamed fluid aggregate mixture is then charged into a cylinder, followed by about 80 g in a cavity with a capacity of about 70 cm 3 in a mold heated to a temperature of 250 ° C. (eg, with a built-in cartridge heater).
- the fluid aggregate mixture was filled while being pressurized with a piston (solid pressurizing means) (filling step).
- the fluid aggregate mixture filled in the heated mold is allowed to stand for 90 seconds, the moisture is evaporated by the heat of the mold, and the fluid aggregate mixture is solidified (solidification step).
- Molded child [0034] A pouring test of the core was performed. Pig iron with a temperature of 1370 ° C in two types, each containing a core coated with an ethanol-based coating agent (Three Coat MTS-720A manufactured by Mikawa Mining Co., Ltd.) and a core coated with no coating agent. When the molten metal of (FC250) was injected, not only the core with the coating mold but also the core without the coating mold was obtained with good forging without causing forging defects and deformation of the core. In addition, the core material was easily removed.
- Particulate aggregate heat-resistant granular material: quartz sand (flattery sand) 100 parts by weight
- Binder Water-soluble binder (binding agent): Polybulal alcohol (JP—05 Nippon Vinegar 'Poval) 0.3 parts by weight and starch (dextrin NSD—L-Sushi) 0.8 parts by weight
- Water-soluble phenolic resin Phoenix 510AL-2 (Kobe Science Co., Ltd.) 0.3 part by weight
- Crosslinking agent Chenic acid (manufactured by Fuso Chemical) 0.8 part by weight Aggregate mixture and water composition shown in Table 2 5 parts by weight is mixed with a mixer (Aikosha Tabletop Mixer) at a rotation speed of about 200 rpm for about 3 minutes to foam, and the foamed fluid aggregate mixture A with a bubble rate of about 60% is foamed.
- Manufactured Manufacturing process.
- This foamed fluid aggregate mixture is then charged into a cylinder, followed by about 90 g in a cavity with a capacity of about 80 cm 3 in a mold heated to a temperature of 250 ° C. (eg, with a built-in cartridge heater).
- the fluid aggregate mixture was filled while being pressurized with a piston (solid pressurizing means) (filling step).
- the fluid aggregate mixture filled in the heated mold was allowed to stand for 2 minutes, and the moisture was evaporated by the heat of the mold to solidify the fluid aggregate mixture (solidification step).
- polyvinyl alcohol, starch and the like and cenoic acid were subjected to a cross-linking reaction, and then a mold such as a solidified aggregate mixture was taken out from the mold cavity.
- Bending specimens were prepared from this saddle, and kept in a humidity chamber with a humidity of 30% and a humidity chamber with a humidity of 98% for 24 hours, respectively, and the bending strength of these specimens was measured. As a result, a strength of 5.4 MPa was obtained at 30% humidity and 2.3 MPa at a humidity of 98%.
- the vertical strength of 5.4 Mpa at 30% humidity is almost the same as that of the vertical shape obtained by the shell mold method. problem There is no strength.
- the saddle strength is 2 MPa or more, it is strong enough to handle the saddle, so it can be used as a saddle.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Pens And Brushes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006528753A JP4003807B2 (ja) | 2004-07-02 | 2005-06-29 | 鋳型造型方法およびその鋳型 |
US11/631,115 US8109319B2 (en) | 2004-07-02 | 2005-06-29 | Molding process and the resulting mold |
MX2007000251A MX2007000251A (es) | 2004-07-02 | 2005-06-29 | Proceso de moldeo y moldes elaborados por el proceso. |
EP05755807A EP1769860B1 (en) | 2004-07-02 | 2005-06-29 | Molding process and molds made by the process |
AT05755807T ATE537921T1 (de) | 2004-07-02 | 2005-06-29 | Formverfahren und durch das verfahren hergestellte formen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004196350 | 2004-07-02 | ||
JP2004-196350 | 2004-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006003945A1 true WO2006003945A1 (ja) | 2006-01-12 |
Family
ID=35782752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/011968 WO2006003945A1 (ja) | 2004-07-02 | 2005-06-29 | 鋳型造型方法およびその鋳型 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8109319B2 (ja) |
EP (1) | EP1769860B1 (ja) |
JP (1) | JP4003807B2 (ja) |
CN (1) | CN100534664C (ja) |
AT (1) | ATE537921T1 (ja) |
MX (1) | MX2007000251A (ja) |
WO (1) | WO2006003945A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010094694A (ja) * | 2008-10-15 | 2010-04-30 | Sintokogio Ltd | 鋳包まれた砂中子の砂落し方法 |
WO2011030795A1 (ja) * | 2009-09-10 | 2011-03-17 | リグナイト株式会社 | 粘結剤コーテッド耐火物、鋳型、鋳型の製造方法 |
JP2016221540A (ja) * | 2015-05-29 | 2016-12-28 | リグナイト株式会社 | 鋳型の製造方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101623747B (zh) * | 2009-08-10 | 2011-06-08 | 温州市展诚阀门有限公司 | 一种阀门小径梯形内螺纹直接精铸成型工艺 |
CN102836962B (zh) * | 2012-07-30 | 2014-02-05 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种改善陶瓷型芯浆料流动性的方法 |
JP6378157B2 (ja) * | 2015-11-06 | 2018-08-22 | トヨタ自動車株式会社 | 発泡砂の製造方法およびその製造装置 |
CN108136485A (zh) * | 2015-11-18 | 2018-06-08 | 花王株式会社 | 铸型造型用粘结剂组合物 |
DE102017131255A1 (de) | 2017-12-22 | 2019-06-27 | HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung | Verfahren zur Herstellung eines metallischen Gussstücks oder eines ausgehärteten Formteils unter Verwendung aliphatischer Polymere umfassend Hydroxygruppen |
JP7036302B2 (ja) * | 2018-03-22 | 2022-03-15 | 新東工業株式会社 | 鋳型用骨材混合物、鋳型、及び鋳型の造型方法 |
CN112692226B (zh) * | 2020-12-09 | 2022-08-30 | 南昌科勒有限公司 | 一种热芯盒树脂砂及包含其的树脂砂芯 |
CN115947606B (zh) * | 2022-12-16 | 2024-03-12 | 中航装甲科技有限公司 | 一种硅基陶瓷型芯水溶性强化剂及强化方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11129054A (ja) | 1997-10-30 | 1999-05-18 | Gun Ei Chem Ind Co Ltd | 鋳型造型用組成物及び鋳型造型方法 |
JP2000000632A (ja) * | 1998-06-17 | 2000-01-07 | Gun Ei Chem Ind Co Ltd | 鋳型造型法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59137147A (ja) * | 1983-01-27 | 1984-08-07 | Dainippon Ink & Chem Inc | 水溶性鋳物砂結合剤およびその用途 |
JPH10146643A (ja) * | 1996-11-19 | 1998-06-02 | Gun Ei Chem Ind Co Ltd | 鋳型造型用組成物及び鋳型造型方法 |
JPH11104785A (ja) * | 1997-10-03 | 1999-04-20 | Gun Ei Chem Ind Co Ltd | 鋳型造型方法 |
CN100534663C (zh) * | 2002-11-08 | 2009-09-02 | 新东工业株式会社 | 干燥骨料混合物,使用这种干燥骨料混合物的铸造成型方法 |
-
2005
- 2005-06-29 US US11/631,115 patent/US8109319B2/en not_active Expired - Fee Related
- 2005-06-29 EP EP05755807A patent/EP1769860B1/en active Active
- 2005-06-29 CN CNB2005800279979A patent/CN100534664C/zh active Active
- 2005-06-29 MX MX2007000251A patent/MX2007000251A/es active IP Right Grant
- 2005-06-29 WO PCT/JP2005/011968 patent/WO2006003945A1/ja active Application Filing
- 2005-06-29 JP JP2006528753A patent/JP4003807B2/ja active Active
- 2005-06-29 AT AT05755807T patent/ATE537921T1/de active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11129054A (ja) | 1997-10-30 | 1999-05-18 | Gun Ei Chem Ind Co Ltd | 鋳型造型用組成物及び鋳型造型方法 |
JP2000000632A (ja) * | 1998-06-17 | 2000-01-07 | Gun Ei Chem Ind Co Ltd | 鋳型造型法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010094694A (ja) * | 2008-10-15 | 2010-04-30 | Sintokogio Ltd | 鋳包まれた砂中子の砂落し方法 |
WO2011030795A1 (ja) * | 2009-09-10 | 2011-03-17 | リグナイト株式会社 | 粘結剤コーテッド耐火物、鋳型、鋳型の製造方法 |
JPWO2011030795A1 (ja) * | 2009-09-10 | 2013-02-07 | リグナイト株式会社 | 粘結剤コーテッド耐火物、鋳型、鋳型の製造方法 |
JP5801200B2 (ja) * | 2009-09-10 | 2015-10-28 | リグナイト株式会社 | 鋳型の製造方法 |
US9744586B2 (en) | 2009-09-10 | 2017-08-29 | Lignyte Co., Ltd. | Binder coated refractories, casting mold using the same, and method of manufacturing casting mold using the same |
JP2016221540A (ja) * | 2015-05-29 | 2016-12-28 | リグナイト株式会社 | 鋳型の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1769860B1 (en) | 2011-12-21 |
ATE537921T1 (de) | 2012-01-15 |
EP1769860A1 (en) | 2007-04-04 |
US8109319B2 (en) | 2012-02-07 |
JP4003807B2 (ja) | 2007-11-07 |
US20090211725A1 (en) | 2009-08-27 |
JPWO2006003945A1 (ja) | 2008-04-17 |
MX2007000251A (es) | 2007-04-09 |
EP1769860A4 (en) | 2008-02-06 |
CN100534664C (zh) | 2009-09-02 |
CN101005910A (zh) | 2007-07-25 |
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