High Quality China Ceramsite Foundry Sand
Περιγραφή
High Quality China Made Ceramsite Sand For Foundry
Ceramsite, also called as NFS CERAMSITE-Nice Foundry Sand,is kind of man-made spherical shape ceramic particles featured by high refractoriness, low thermal expansion made by spraying melted from the fused bauxite.
Ομάδα | 20 | 30 | 40 | 50 | 70 | 100 | 140 | 200 | AFS Range | |||||||
Code | 850 | 600 | 425 | 300 | 212 | 150 | 106 | 75 | ||||||||
20-40 | 15-40 | 30-55 | 15-35 | ≤3 | 15-25 | |||||||||||
30-50 | ≤10 | 25-45 | 35-55 | 5-15 | ≤5 | ≤2 | 25-29 | |||||||||
40-70 | ≤10 | 25-45 | 20-40 | 5-25 | ≤7 | ≤5 | 35-39 | |||||||||
40-100 | ≤3 | 10-25 | 25-40 | 25-45 | 10-25 | ≤10 | ≤5 | 45-55 | ||||||||
50-100 | ≤10 | 10-30 | 30-50 | 15-35 | ≤15 | ≤5 | 55-65 | |||||||||
50-140 | ≤8 | 10-25 | 20-45 | 20-45 | 5-20 | ≤7 | 60-70 | |||||||||
70-140 | ≤10 | 10-25 | 25-45 | 15-35 | ≤15 | 75-85 | ||||||||||
100-200 | 10-35 | 35-55 | 15-35 | 95-115 | ||||||||||||
140-270 | ≤5 | 5-25 | 40-60 | 155-175 | ||||||||||||
6-20 | LFC casting ceramsite |
Physical&Chemical Properites:
1. Σχήμα: Sphere
2. Angle Factor: ≤1.1
3. Χύδην πυκνότητα: 1.95-2.05 (g/cm3)
4. Refractoriness: ≥1790℃
5. Thermal expansion: 0.13% (10 minutes under 1000℃)
6. Main Chemical composition (typical value as following table):
Τypical Chemical Value for Reference:
Μονάδα | Al2O3 | SiO2 | Fe2O3 | TiO2 | CaO | MgO | K2O | Na2O |
% | 75.36 | 17.72 | 2.16 | 3.23 | 0.43 | 0.35 | 0.33 | 0.08 |
ΕΝΑdvantages:
1. Solid sphere: The shape of Ceramsite is spherical with smooth surface and less surface area and offering a very good flowability and filling ability. To compare with other sands else, less binder is used at the same mold strength and higher venting ability. It also offers the excellent collapsibility
2. Lower thermal expansion rate: It makes the dimensions of castings better, less crack and defect and higher output
3. Lower breakage rate: Ceramsite has a higher density and a very lower breakage rate at the reclaimation. It makes a better reclamations rate to reduce the waste sand and the pollution.
4. High refractoriness: The major chemistry is Al2O3 and SiO2, so mostly mullite and corundum phase in the Ceramsite which will make sure the high refractoriness and thermal stablity. And PH Value appears neutral. It is suitable for all kinds of metaland alloy castings.
Εφαρμογή:
1. In Vacuum(V)-casting and Lost-foam casting (LFC)
2. In Investment Casting, ceramsite can substitute Zircon sand and powder
3. In large size steel castings, ceramite can substitute Chromite
4. Resin Coated Castings
Επιπλέον πληροφορίες
Τόπο καταγωγής: | Henan, Κίνα |
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Μάρκα: | RM |
Αριθμός μοντέλου: | CERAM |
Εφαρμογή: | FOUNDRY, foundry |
Σχήμα: | BALL |
Chemical Composition: | AL2O3 70%; sio2 30% |
χρώμα: | μαύρος |
Ονομασία προϊόντος: | ceramic sand for foundry |
Μέγεθος: | 200mesh to 1mm |
Πρώτη ύλη: | calcined bauxite |
Πυκνότητα: | 1.95-2.05g/cm3 |
Δείγμα: | free of charge |
Πλεονέκτημα: | Chemical Stability |
grain shape: | spherical |
Refractoriness: | 1800degree min |