PL92602B1 - - Google Patents
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- Publication number
- PL92602B1 PL92602B1 PL17384174A PL17384174A PL92602B1 PL 92602 B1 PL92602 B1 PL 92602B1 PL 17384174 A PL17384174 A PL 17384174A PL 17384174 A PL17384174 A PL 17384174A PL 92602 B1 PL92602 B1 PL 92602B1
- Authority
- PL
- Poland
- Prior art keywords
- weight
- sand
- amount
- binder
- mass
- Prior art date
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- 239000004576 sand Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 5
- 229940117975 chromium trioxide Drugs 0.000 claims description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 3
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 239000003110 molding sand Substances 0.000 claims description 2
- 239000004848 polyfunctional curative Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Description
Przedmiotem wynalazku jest sypka samoutwardzalna masa formierska i rdzeniowa ze spoiwem organicznym.Znane sa sypkie samoutwardzalne masy na szkle wodnym, zawierajace lug posiarczynowy w ilosci do 2% wagowych, jako dodatek ulatwiajacy wybijalnosc masy i polepszajacy jej podatnosc. Znane sa równiez masy formierskie ze spoiwem w postaci lugu posiarczynowego w ilosci do 6% wagowych. Masa ta, dla uzyskania wytrzymalosci, wymaga suszenia. Jej zastosowanie jest ograniczone, gdyz charakteryzuje sie higroskopijnoscia i osypliwoscia.Celem wynalazku jest sypka samoutwardzalna masa formierska i rdzeniowa ze spoiwem organicznym, charakteryzujaca sie dobra wybijalnoscia, podatnoscia oraz niskimi kosztami wytwarzania.W wyniku doswiadczen opracowano sypka samoutwardzalna mase formierska i rdzeniowa, w sklad której wchodza: piasek suszony jako wypelniacz, jako spoiwo lug posiarczynowy w ilosci 2—10% wagowych, przy czym masa zawiera jako utwardzacz uwodniony trójtlenek chromu w ilosci 0,5—2% wagowych.Masa wedlug wynalazku moze zawierac równiez znane dodatki, jak na przyklad:glinke, bentonit.Masa formierska i rdzeniowa wedlug wynalazku charakteryzuje sie dobra wytrzymaloscia i przepuszczalnoscia: R^h = do2,5kG/cm2 RJ*h = do4,0kG/cm2 RJ?4h = do 20,0 kG/cm2 1h *3h 24h = do 200 cm4/G-min. = do 220 cm4/G* min. = do 260 cm4/G* min.Ponadto masa wedlug wynalazku cechuje sie dobra podatnoscia i bardzo dobra wybijalnoscia.Przyklad masy wedlug wynalazku: piaseksuszony — 95% wagowych lug posiarczynowy — 4% wagowych uwodniony trójtlenek chromu - 1% wagowych.2 92 602 PLThe subject of the invention is a loose self-hardening molding sand and a core sand with an organic binder. Free-flowing self-curing sand on water glass are known, containing sulfite slurry in an amount of up to 2% by weight, as an additive facilitating sand breakout and improving its susceptibility. Molding compositions with a binder in the form of a sulphite slug in an amount of up to 6% by weight are also known. This mass requires drying in order to be strong. Its application is limited, as it is hygroscopic and friable. The aim of the invention is a free-flowing self-hardening molding and core sand with an organic binder, characterized by good knock-out properties, flexibility and low production costs. consists of: dried sand as a filler, as a binder sulfite slug in an amount of 2-10% by weight, the mass containing as hardener hydrated chromium trioxide in an amount of 0.5-2% by weight. According to the invention, the mass may also contain known additives, such as : clay, bentonite. The molding and core sand according to the invention is characterized by good strength and permeability: R ^ h = up to 2.5 kg / cm2 RJ * h = up to 4.0 kg / cm2 RJ? 4h = up to 20.0 kg / cm2 1h * 3h 24h = up to 200 cm4 / G-min. = up to 220 cm4 / G * min. = up to 260 cm4 / G * min. In addition, the inventive mass is characterized by good flexibility and very good knock-out properties. Example of the inventive mass: dried sand - 95% by weight sulphite slug - 4% by weight hydrated chromium trioxide - 1% by weight 2 92 602 EN
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL17384174A PL92602B1 (en) | 1974-09-03 | 1974-09-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL17384174A PL92602B1 (en) | 1974-09-03 | 1974-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL92602B1 true PL92602B1 (en) | 1977-04-30 |
Family
ID=19968784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL17384174A PL92602B1 (en) | 1974-09-03 | 1974-09-03 |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL92602B1 (en) |
-
1974
- 1974-09-03 PL PL17384174A patent/PL92602B1/pl unknown
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