NO128205B - - Google Patents
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- NO128205B NO128205B NO35869A NO35869A NO128205B NO 128205 B NO128205 B NO 128205B NO 35869 A NO35869 A NO 35869A NO 35869 A NO35869 A NO 35869A NO 128205 B NO128205 B NO 128205B
- Authority
- NO
- Norway
- Prior art keywords
- mixture
- production
- water
- liquid
- hardening
- Prior art date
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- 239000000203 mixture Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- 239000004088 foaming agent Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 235000019353 potassium silicate Nutrition 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 5
- 235000012241 calcium silicate Nutrition 0.000 claims description 5
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 5
- 239000007849 furan resin Substances 0.000 claims description 5
- 239000006004 Quartz sand Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 3
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical group OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HYBBIBNJHNGZAN-UHFFFAOYSA-N Furaldehyde Natural products O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical class OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Description
Fremgangsmåte til fremstilling av flytende selv- Process for the production of liquid self-
herdende blanding, fortrinnsvis til bruk for curing mixture, preferably for use for
fremstilling av støpekjerner og -former. production of casting cores and molds.
Foreliggende oppfinnelse vedrører en fremgangsmåte til fremstilling av flytende selvherdende blandinger, fortrinnsvis til bruk for fremstilling av støpekjerner og -former. The present invention relates to a method for the production of liquid self-hardening mixtures, preferably for use in the production of casting cores and moulds.
Det er tidligere kjent en fremgangsmåte til fremstilling av en flytende selvherdende blanding av et fyllstoff f.eks. kvartssand, et bindemiddel f.eks. vannglass, og et additiv som gir herding av blandingen, f.eks. dikalsiumsilikat og et skummingsmiddel slik som sulfonsyre (se fransk patent nr. 1 342 529). A method for producing a liquid self-hardening mixture of a filler is previously known, e.g. quartz sand, a binder e.g. water glass, and an additive that hardens the mixture, e.g. dicalcium silicate and a foaming agent such as sulphonic acid (see French Patent No. 1,342,529).
De således fremstilte flytende blandinger som har til hensikt The thus produced liquid mixtures intended
å tillate en lett fylling av kjerneboksene uten å måtte presse blandingen ned i disse bokser, selvherding av blandingen i friluft, bruk to allow an easy filling of the core boxes without having to press the mixture into these boxes, self-hardening of the mixture in the open air, use
av billige herdemidler, er imidlertid ikke forbundet med en lett fjerning av kjernene fra de støpte gjenstander, spesielt når gjenstandene har en kompleks form. of cheap hardeners, however, is not associated with an easy removal of the cores from the molded articles, especially when the articles have a complex shape.
Videre.har de tidligere fremstilte blandinger en trykkfasthet etter en time på 1.5 -.2 kg/cm 2 og dette er ofte ikke tilstrekkelig når kjernene skal lagres, transporteres eller sammensettes. Furthermore, the previously produced mixtures have a compressive strength after one hour of 1.5 - 2 kg/cm 2 and this is often not sufficient when the cores are to be stored, transported or assembled.
Når det i enkelte tilfeller lages kjerner med kompleks form, som har utragende deler, blir disse deler ofte skadet når kjernene monteres. When, in some cases, cores with a complex shape, which have protruding parts, are made, these parts are often damaged when the cores are assembled.
Det kan også nevnes at de tidligere fremstilte blandinger har en lang herdetid, (40 til 50 minutter) slik at selve støpeprosessen forlenges. Det er derfor umulig, å anvende disse blandinger til masse-produksjon av støpekjerner. It can also be mentioned that the previously prepared mixtures have a long curing time (40 to 50 minutes) so that the casting process itself is prolonged. It is therefore impossible to use these mixtures for the mass production of casting cores.
Formålet med foreliggende oppfinnelse er å tilveiebringe en fremgangsmåte til fremstilling av en flytende selvherdende blanding som gir opphav til en høy trykkfasthet i" fast tilstand, en kort herdetid og en lett fjerning av kjernene fra de støpte gjenstander. The purpose of the present invention is to provide a method for the production of a liquid self-hardening mixture which gives rise to a high compressive strength in the solid state, a short hardening time and an easy removal of the cores from the cast objects.
Dette oppnåes ifølge' foreliggende oppfinnelse, ved at det er tilveiebragt en fremgangsmåte til fremstilling av én flytende selvherdende blanding, fortrinnsvis til bruk for. fremstilling, av. støpe-, kjerner og -former, hvilken blanding består av. et fyllstoff f.eks. kvartssand, et bindemiddel slik som vannglass, et•additiv for herding av blandingen i form av dikalsiumsilikat eller matérialer inneholdende dikalsiumsilikat, et skummingsmiddel valgt fra gruppen av anioniske og ikke-ioniske overflateaktive midler, samt vann, kjennetegnet ved at det til blandingen også tilsettes en ved dannelsen av furanharpiks oppnådd vandig væske bestående av reaksjonsvann og vaskevann. This is achieved according to the present invention, by providing a method for the production of a liquid self-hardening mixture, preferably for use for. manufacture, of. castings, cores and molds, which mixture consists of. a filler e.g. quartz sand, a binding agent such as water glass, an additive for hardening the mixture in the form of dicalcium silicate or materials containing dicalcium silicate, a foaming agent selected from the group of anionic and non-ionic surfactants, and water, characterized in that a during the formation of furan resin obtained aqueous liquid consisting of reaction water and washing water.
Den vandige væske anvendes fortrinnsvis i mengder på fra 0.3 til 1.0 vektdeler. The aqueous liquid is preferably used in amounts of from 0.3 to 1.0 parts by weight.
I britisk patent nr. 1 085 651 beskrives "en selvherdende blanding omfattende et fyllstoff, et materiale som bevirker selvherding, et bindemiddel f.eks. en vandig natriumsilikatoppløsning, et skummingsmiddel, vann og et additiv som akselererer herding, øker styrken' og forbedrer blandingens utstøtingsegenskapér. Det benyttede additiv er ureaformaldehyd-furfurolharpiks som er en ureaformaldéhydharpiks modi-fisert med furfurol i en mengde på opptil 7 % >~ Ved foreliggende oppfinnelse brukes en tilsetning oppnådd ved fremstilling av furanharpikser hvori fural-alkoholinnholdet vanligvis ikke er under 50 %. Additivet som benyttes i det britiske patent og i foreliggende oppfinnelse er således helt forskjellige; additivet i patentet er en syntetisk ureaformaldéhydharpiks og additivet i foreliggende oppfinnelse er et av-fallsprodukt oppnådd ved fremstilling av furanharpikser. British Patent No. 1,085,651 describes "a self-curing mixture comprising a filler, a self-curing material, a binder eg an aqueous sodium silicate solution, a foaming agent, water and an additive which accelerates curing, increases strength" and improves the mixture's The additive used is urea-formaldehyde-furfurol resin, which is a urea-formaldehyde resin modified with furfurol in an amount of up to 7% >~ In the present invention, an additive obtained from the production of furan resins in which the fural-alcohol content is usually not below 50% is used. used in the British patent and in the present invention are thus completely different: the additive in the patent is a synthetic urea formaldehyde resin and the additive in the present invention is a waste product obtained from the production of furan resins.
Følgende eksempel illustrerer oppfinnelsen, og mengdeangiveIsene er vektdeler. The following example illustrates the invention, and the quantities indicated are parts by weight.
Væsken fra furanharpiks-fremstillingen er en vandig væske inneholdende 10 - 15 % aktive grupper av furfuryl-alkohol, metanol, fur-fural og formaldehyd, og'disse komponenter gir "ved innføring i vannglass betydelig økning i sistnevntes bindeevne. The liquid from the furan resin production is an aqueous liquid containing 10 - 15% active groups of furfuryl alcohol, methanol, furfural and formaldehyde, and these components, when introduced into water glasses, give a significant increase in the binding capacity of the latter.
De tørre komponentene slik som kvartssand og pulverformig slagg fra ferrokrom-fremstillingen i de ovenfor angitte mengder, The dry components such as quartz sand and powdered slag from the ferrochrome production in the quantities indicated above,
blandes i et blandeapparat-ved 30 - 60 omdr./minutt i 1 til 2 minutter. Deretter blir de flytende komponentene nemlig bindemidlet (vannglass), skummingsmidlet (sulfonsyre), vann og den ovenfor nevnte væske, om- mixed in a mixer at 30 - 60 rpm for 1 to 2 minutes. Then the liquid components, namely the binder (water glass), the foaming agent (sulfonic acid), water and the above-mentioned liquid, if-
rørt i en adskilt beholder og tilført til blandeapparatet hvor blandingen fortsettes i 2 - 3 minutter til blandingen får en frittflytende, skumaktig konsistens. stirred in a separate container and fed to the mixer where the mixing is continued for 2 - 3 minutes until the mixture attains a free-flowing, foamy consistency.
I denne frittflytende tilstand kan blandingen helles i kjerne-bokser og i former med mønstere. In this free-flowing state, the mixture can be poured into core boxes and into molds with patterns.
Forsøk har vist at tilsetning av nevnte væske til blandingen øker blandingens styrke 1.5-2 ganger (5-6 kg/cm p) når prøvestykker sammenpresses i 1 time, sammenlignet med trykkfastheten til en vanlig flytende blanding. Experiments have shown that adding said liquid to the mixture increases the strength of the mixture 1.5-2 times (5-6 kg/cm p) when test pieces are pressed together for 1 hour, compared to the compressive strength of a normal liquid mixture.
Videre reduseres blandingens herdetid 1.5-2 ganger (10 - 20 minutter) og arbeidet med utstøting av kjernene reduseres med 20 - 30%<.> - Furthermore, the mixture's curing time is reduced 1.5-2 times (10 - 20 minutes) and the work of ejecting the cores is reduced by 20 - 30%<.> -
De herdede kjerner og former trenger ingen varmetørking og kan fylles med smeltet metall like etter at de er fremstilt. The hardened cores and molds do not need heat drying and can be filled with molten metal immediately after they are produced.
Kjernene og formene som fremstilt ovenfor, kan anvendes ved støping av stål, jern og ikke-jernholdige metall-legeringer. The cores and molds as produced above can be used in the casting of steel, iron and non-ferrous metal alloys.
I en annen utførelse av oppfinnelsen kan vannglass anvendes som en vandig oppløsning av kaliumsilikat, mens nevnte væske kan anvendes i en mengde på fra 0.3 til 1.0 vektdeler. In another embodiment of the invention, water glass can be used as an aqueous solution of potassium silicate, while said liquid can be used in an amount of from 0.3 to 1.0 parts by weight.
Skummingsmidlene kan innføres i en mengde på fra 1/10000 til 1/1000 av vekten av støpeblandingen, som forandres fra en pastaformig tilstand til væskeform etter blanding i noen minutter. The foaming agents can be introduced in an amount of from 1/10,000 to 1/1,000 of the weight of the molding mixture, which changes from a pasty state to liquid form after mixing for a few minutes.
Skummemidlene er valgt fra gruppen av anioniske og ikke-ioniske overflateaktive forbindelser. The foaming agents are selected from the group of anionic and non-ionic surface-active compounds.
Blant de anioniske overflateaktive midler som gir skummet den nødvendige fluiditet og stabilitet, er alkylarylsulfonater, alkyl-sulfonater og alkylsulfater fremstilt enten ved sulfonering eller sulfatering av produkter fra oljeraffinering eller fra syntetiske metoder. Among the anionic surface-active agents that give the foam the necessary fluidity and stability, alkyl aryl sulfonates, alkyl sulfonates and alkyl sulfates are produced either by sulfonation or sulfation of products from oil refining or from synthetic methods.
De ikke-ioniske overflateaktive midlene inneholder vanligvis forbindelser fremstilt ved omsetning av etylenoksyd med organiske forbindelser som inneholder aktivt hydrogen. The nonionic surfactants usually contain compounds produced by reacting ethylene oxide with organic compounds containing active hydrogen.
Skummemidlene kan også velges fra gruppen av oksy-etylerte alkylfenoler, alkoholer, fettsyrer, fettaminer, alkylnaftaler og mer-kaptaner. The foaming agents can also be selected from the group of oxyethylated alkylphenols, alcohols, fatty acids, fatty amines, alkylnaphthalenes and mercaptans.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO35869A NO128205B (en) | 1969-01-30 | 1969-01-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO35869A NO128205B (en) | 1969-01-30 | 1969-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO128205B true NO128205B (en) | 1973-10-15 |
Family
ID=19877546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO35869A NO128205B (en) | 1969-01-30 | 1969-01-30 |
Country Status (1)
Country | Link |
---|---|
NO (1) | NO128205B (en) |
-
1969
- 1969-01-30 NO NO35869A patent/NO128205B/no unknown
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