CS210647B2 - Foundry mould or core,manufactured from quocksetting sand mixture - Google Patents
Foundry mould or core,manufactured from quocksetting sand mixture Download PDFInfo
- Publication number
- CS210647B2 CS210647B2 CS895472A CS895472A CS210647B2 CS 210647 B2 CS210647 B2 CS 210647B2 CS 895472 A CS895472 A CS 895472A CS 895472 A CS895472 A CS 895472A CS 210647 B2 CS210647 B2 CS 210647B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- sand
- parts
- weight
- foundry
- silica
- Prior art date
Links
- 239000004576 sand Substances 0.000 title claims abstract description 33
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000004793 Polystyrene Substances 0.000 claims abstract description 11
- 229920002223 polystyrene Polymers 0.000 claims abstract description 11
- 239000003350 kerosene Substances 0.000 claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- 231100000252 nontoxic Toxicity 0.000 claims abstract description 3
- 230000003000 nontoxic effect Effects 0.000 claims abstract description 3
- 239000002341 toxic gas Substances 0.000 claims abstract description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 6
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000009974 thixotropic effect Effects 0.000 claims description 3
- 240000007817 Olea europaea Species 0.000 claims description 2
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910052609 olivine Inorganic materials 0.000 claims description 2
- 239000010450 olivine Substances 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910052845 zircon Inorganic materials 0.000 claims 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010304 firing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000010453 quartz Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Vynález se týká slévárenské formy nebo jádra, vyrobených z pískové rychletvrdnoucí směsi a způsobu jejich výroby.The present invention relates to a foundry mold or core made of a sand quick-setting mixture and to a process for producing the same.
Dosud jsou známy rychletvrdnoucí pískové směsi pro výrobu slévárenských forem' a jader, které jsou vytvrzovány ve studených, tj. nevytápěných jadernících, přičemž doba jejich vytvrzování je poměrně krátká a - je v rozmezí do 120' s. Pískové směsi tohoto typu obsahují jako pojivo vodní sklo a jsou vytvrzovány přísadou organických látek nebo profukováním kysličníku uhličitého. Jsou rovněž známé rychletvrdnoucí pískové směsi -s organickými pojivý, vytvrzované přísadou katalyzátoru nebo profukováním silných plynných katalyzátorů. Do· této skupiny pískových směsí přísluší i známá písková směs, která obsahuje slévárenský písek, syntetickou pryskyřici, katalyzátory, jako například kyselinu fosforečnou, kyselinu toluensulfonovou a rozpouštědla. Vytvrzování těchto· pískových směsí se provádí profukováním vzduchu o teplotě 283 až 420 K a probíhá vlivem reakce silného katalyzátoru se syntetickou pryskyřicí.Fast-setting sand mixtures for the production of foundry molds and cores are known which are cured in cold, i.e. unheated, cores, and their curing time is relatively short and is in the range up to 120 ' s. glass and are cured by the addition of organic substances or by purging carbon dioxide. Quick-setting sand mixtures with organic binders, cured by the addition of a catalyst or by purging of strong gaseous catalysts, are also known. This group of sand mixtures also includes the known sand mixture, which contains foundry sand, synthetic resin, catalysts such as phosphoric acid, toluenesulfonic acid and solvents. The curing of these sand mixtures is effected by blowing air at a temperature of 283 to 420 K and is effected by the reaction of a strong catalyst with a synthetic resin.
Podle sovětského autorského osvědčení č.According to Soviet copyright certificate no.
271 733 se písková směs připraví tak, že - se do křemičitého písku přidá roztok polystyrenu ve 'směsi s -butylacetátem a lakovým benzínem. Vytvrzování jader se provádí v sušicí peci při teplotě 450 až 470 K po dobu několika hodin. Takto- vyrobená jádra jsou málo pevná a vyznačují se tendencí k deformacím během -sušení.271,733, the sand mixture is prepared by adding a solution of polystyrene mixed with butyl acetate and white spirit to silica sand. The cores are cured in a drying oven at 450 to 470 K for several hours. The cores thus produced are of low strength and exhibit a tendency to deform during drying.
Použití těchto pískových směsí a postupů jejich vytvrzování přináší řadu nevýhod, neboť vyžaduje využití silně toxických plynů a tím nutnost konstruovat zvláštní odtoky plynu -a těsnou instalaci zařízení.The use of these sand mixtures and their curing processes presents a number of drawbacks, since it requires the use of strongly toxic gases and hence the need to construct special gas outflows and the tight installation of the equipment.
Uvedené nevýhody odstraňuje slévárenská forma nebo- jádro, vytvořené z rychletvrdnoucí směsi, sestávající ze 100 hmot, dílů slévárenského- písku, například křemičitého, - olivínového nebo - zirkonového jako ostřiva a z 1 až 10 himot. dílů 10 - až 90 i% roztoku polystyrenu v organickém· rozpouštědle jako pojivá, podle vynálezu jehož podstata spočívá v tom, že rychletvrdnoucí směs -dále obsahuje 0,1 až 10 hmot, dílů petroleje jako absorpční přísadu -a je po vyformování vytvrzena profouknutím stlačeného vzduchu- během 5 až 150· s pod tlakem 0,02 až -0,6 MPa. Organickým rozpouštědlem je, podle vynálezu, etylacetát, trichloretylén nebo chlorid uhličitý a rychletvrdnoucí směs -obsahuje 1 až 10 hmot, dílů petroleje jako- absorpční přísadu nebo 1 -až 10 hmot, dílů zeolitu, křemičitého gelu, tixotropního- kysličníku křemičitého nebo aktivního uhlí jako absorpční přísadu a to jednotlivě nebo ve vzájemné kombinaci do 10 hmot. dílů.These disadvantages are overcome by a foundry mold or core formed from a rapid curing composition consisting of 100 parts by weight of parts of foundry sand, for example silica, olivine or zirconium as an aggregate, and 1 to 10 himot. parts of a 10-90% solution of polystyrene in an organic solvent as a binder according to the invention, characterized in that the quick-hardening composition further contains 0.1 to 10% by weight of parts of kerosene as an absorbent additive and is cured by blow molding air - during 5 to 150 · s under pressure 0.02 to -0.6 MPa. The organic solvent according to the invention is ethyl acetate, trichlorethylene or carbon tetrachloride and the quick curing mixture comprises 1 to 10 parts by weight, parts of kerosene as absorbent or 1-10 parts by weight, parts of zeolite, silica gel, thixotropic silica or activated carbon such as an absorbent additive, individually or in combination with each other up to 10 wt. parts.
Písková směs podle vynálezu se připraví v jakémkoliv slévárenském mísiči během několika až 150 s. Jádra a formy vyrobené z pískové směsi podle vynálezu, se vyrábějí plněním formovacích rámů nebo jaderníků pískovou směsí mechanicky nebo ručně. Formovací . rámy nebo jaderníky k tomuto úč.elu používané, mají přívody plynu.The sand composition of the invention is prepared in any foundry mixer within a few to 150 seconds. Cores and molds made from the sand composition of the invention are made by filling the molding frames or cores with the sand composition mechanically or manually. Molding. frames or cores used for this purpose have gas inlets.
Vytvrzování pískové směsi podle vynálezu spočívá v profukování této směsi netoxíckým stlačeným vzduchem, který má teplotu okolí a je přiváděn pod tlakem 0,02 až 0,6 MPa po. dobu 5 až 150 s.The curing of the sand composition according to the invention consists in purging this mixture with non-toxic compressed air having an ambient temperature and supplied under a pressure of 0.02 to 0.6 MPa. 5 to 150 s.
Čas, potřebný k úplnému vytvrzení pískové směsi, je závislý na tvaru a velikosti jádra nebo· formy.The time required to fully cure the sand mixture depends on the shape and size of the core or mold.
Jádra, vyrobená z pískové směsi podle vynálezu, mají pevnost v ohybu nad 3 MPa a pevnost v tlaku nad 2 MPa. Jádra jsou odolná proti opotřebení otěrem a jejich vytloukací vlastnost je mimořádně dobrá.The cores made from the sand composition according to the invention have a bending strength above 3 MPa and a compressive strength above 2 MPa. The cores are resistant to abrasion and their breaking properties are extremely good.
Písková směs podle vynálezu se používá k výrobě forem nebo jader pro .odlévání jak železných, tak i neželezných slitin.The sand composition of the present invention is used to produce molds or cores for casting both ferrous and non-ferrous alloys.
Dále jsou uvedeny příklady složení pís-The following are examples of composition of
• PŘEDMĚT• SUBJECT
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15249771A PL74479B1 (en) | 1971-12-27 | 1971-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS210647B2 true CS210647B2 (en) | 1982-01-29 |
Family
ID=19956824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS895472A CS210647B2 (en) | 1971-12-27 | 1972-12-27 | Foundry mould or core,manufactured from quocksetting sand mixture |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS521374B2 (en) |
| AT (1) | AT332573B (en) |
| AU (1) | AU469129B2 (en) |
| BE (1) | BE793361A (en) |
| CH (1) | CH586081A5 (en) |
| CS (1) | CS210647B2 (en) |
| DD (1) | DD101304A5 (en) |
| DE (1) | DE2228747C3 (en) |
| ES (1) | ES410440A1 (en) |
| FR (1) | FR2165838B1 (en) |
| GB (1) | GB1358241A (en) |
| IT (1) | IT972969B (en) |
| NL (1) | NL153452B (en) |
| PL (1) | PL74479B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152321A (en) * | 1974-11-01 | 1976-05-08 | Sumitomo Durez Co | Igatano seizohoho |
| DE2741172C2 (en) * | 1977-09-09 | 1983-07-14 | Hüttenes-Albertus Chemische Werke GmbH, 4000 Düsseldorf | Vacuum process for the production of casting molds |
| WO1980001653A1 (en) * | 1979-02-08 | 1980-08-21 | O Madono | Production of casting mold |
| US4268425A (en) * | 1979-05-14 | 1981-05-19 | Ashland Oil, Inc. | Phenolic resin-polyisocyanate binder systems containing a drying oil and use thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4004656A (en) * | 1975-06-17 | 1977-01-25 | Westinghouse Air Brake Company | Multi-brake shoe means for a multi-braking surface braked assembly |
-
0
- BE BE793361D patent/BE793361A/en unknown
-
1971
- 1971-12-27 PL PL15249771A patent/PL74479B1/xx unknown
-
1972
- 1972-06-05 GB GB2610372A patent/GB1358241A/en not_active Expired
- 1972-06-05 FR FR7220141A patent/FR2165838B1/fr not_active Expired
- 1972-06-13 DE DE19722228747 patent/DE2228747C3/en not_active Expired
- 1972-06-21 JP JP47062283A patent/JPS521374B2/ja not_active Expired
- 1972-12-22 AT AT1098872A patent/AT332573B/en not_active IP Right Cessation
- 1972-12-27 IT IT3364572A patent/IT972969B/en active
- 1972-12-27 DD DD16792772A patent/DD101304A5/xx unknown
- 1972-12-27 NL NL7217670A patent/NL153452B/en not_active IP Right Cessation
- 1972-12-27 ES ES410440A patent/ES410440A1/en not_active Expired
- 1972-12-27 CH CH1891572A patent/CH586081A5/xx not_active IP Right Cessation
- 1972-12-27 CS CS895472A patent/CS210647B2/en unknown
- 1972-12-28 AU AU50581/72A patent/AU469129B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2165838A1 (en) | 1973-08-10 |
| AT332573B (en) | 1976-10-11 |
| DE2228747A1 (en) | 1973-07-12 |
| JPS4878025A (en) | 1973-10-19 |
| NL153452B (en) | 1977-06-15 |
| ATA1098872A (en) | 1976-01-15 |
| AU5058172A (en) | 1974-07-04 |
| DE2228747B2 (en) | 1973-12-06 |
| PL74479B1 (en) | 1974-10-31 |
| DE2228747C3 (en) | 1978-03-23 |
| NL7217670A (en) | 1973-06-29 |
| IT972969B (en) | 1974-05-31 |
| GB1358241A (en) | 1974-07-03 |
| JPS521374B2 (en) | 1977-01-13 |
| BE793361A (en) | 1973-04-16 |
| DD101304A5 (en) | 1973-11-05 |
| ES410440A1 (en) | 1976-04-16 |
| AU469129B2 (en) | 1974-07-04 |
| CH586081A5 (en) | 1977-03-31 |
| FR2165838B1 (en) | 1977-04-01 |
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