Lowered Viscosity Solvent for Green Sand Metalcasting Foundry
841 CORE OIL is a solvent containing core oil formulated with alkyd oils, petroleum resins, solvents and drying agents and is used in operations that require high strengths fairly quickly. An added benefit of 841 CORE OIL is the lowered viscosity that allows a shorter mixing time or the use of a less efficient mixer.
Typical Product Data*
| Appearance: | Dark Brown Liquid |
| Density (Lbs./Gal.): | 7.6 |
| Viscosity: | 1000 cps. at 68°F |
| Flash Point (C.O.C.): | 100° F minimum |
*These values are not intended for use in preparing specifications.
| Baking Strengths | Sand Mix (Based on 720 Sand) |
| Sand | 93.40% |
| Cereal | 0.93% |
| Core Oil | 3.34% |
| Water | 2.33% |
Mix all dry ingredients for one (1) minute.
Add the water and mix for one (1) minute.
Scrape down mixer.
Add the core oil and mix for one (1) minute.
Scrape down.
Mix for five (5) minutes.
After making core samples; bake for 2 hours at 400° F.
| Time (Minutes) | Tensile (P.S.I.) |
| 20 | 20 |
| 40 | 100 |
| 60 | 200 |
| 90 | 275 |
| 120 | 275 |
Use Recommendations
841 CORE OIL can be used with any type of mixer as long as the mixing efficiency is high enough to allow proper dispersion of the oil. Specific sand mixes are not recommended here due to the variety of applications for this product.
