Casting
Gilsonite for Heavy-Section Castings
Large castings — machine bases, mill parts, counterweights — remain hot for a long time, increasing the risk…
Knowledge Center
Practical, expert articles on gilsonite in drilling fluids, asphalt, foundry, inks, paints, coatings and waterproofing.
Casting
Sand System Control: Keeping Your Green Sand Stable
A stable sand system produces consistent castings. These are the key parameters to control. Add gilsonite in proportion…
Casting
Gas Porosity in Castings: Causes and Additive Control
Gas porosity — blowholes and pinholes — is one of the most common casting defects. Carbon additives can…
Casting
Carbon Additives for Automotive Castings
Engine blocks, cylinder heads, brake drums and discs are high-volume, high-quality castings. Foundries serving the automotive industry need…
Casting
Gilsonite in Cast Iron Pipe Fittings and Valve Castings
Pipe fittings, valve bodies and manhole covers are produced in large quantities in green sand foundries. Surface quality…
Casting
Better Shake-Out with Carbon Additives
Shake-out is where castings are separated from their moulds. Sand that sticks to castings slows production and increases…
Casting
How to Improve Casting Surface Finish
A smooth as-cast surface reduces machining, grinding and blasting time. These are the main levers. Finer sand gives…
Casting
Green Sand Casting Step by Step and the Role of Gilsonite
Green sand casting is the most widely used metal casting method in the world. "Green" means the sand…
Foundry
Foundry Gilsonite: Frequently Asked Questions
How much gilsonite replaces sea coal? Usually less gilsonite is needed than sea coal because of its higher…
Foundry
Gilsonite in Non-Ferrous Castings
Aluminium, copper and brass castings are poured at lower temperatures than iron, so less carbon additive is needed.…
Foundry
Can Gilsonite Be Used for Steel Castings?
Steel castings present different challenges from iron. Pouring temperatures are higher and carbon pick-up can be a concern.
Foundry
Gilsonite in Grey Iron Foundries
Grey iron castings — engine blocks, brake discs, pump housings — are produced in large volumes in green…
Our Products
| Product | Particle size | Softening point (R&B) | Typical dosage | |
|---|---|---|---|---|
| Gilsonite Lump | 0 – 50 mm (custom) | 150 – 220 °C | Depends on application. | Spec · MSDS · COA |
| Gilsonite Granular | 1 – 5 mm | 150 – 200 °C | Asphalt: 4–12 % by weight of binder. | Spec · MSDS · COA |
| Gilsonite Powder | 100 – 200 mesh | 150 – 220 °C | Drilling 2–8 lb/bbl · asphalt 4–12 % of binder · foundry 0.3–1.0 % | Spec · MSDS · COA |
| Micronized Gilsonite | 300 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil. | Spec · MSDS · COA |
| Drilling Fluid Grade Gilsonite | 75 – 200 µm | 160 – 220 °C (grades) | 2 – 8 lb/bbl | Spec · MSDS · COA |
| Sulphonated Asphalt | — | — | 2 – 6 lb/bbl | Spec · MSDS · COA |
| Cementing Grade Gilsonite | 75 – 200 µm | 160 – 220 °C | 5 – 15 % BWOC | Spec · MSDS · COA |
| Asphalt Modifier Grade Gilsonite | Powder ≤ 200 mesh / granular 1–5 mm | 150 – 200 °C | 4 – 12 % by weight of binder | Spec · MSDS · COA |
| Foundry Grade Gilsonite | 100 – 300 mesh | 150 – 200 °C | 0.3 – 1.0 % (iron) | Spec · MSDS · COA |
| Ink & Paint Grade Gilsonite | 200 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil | Spec · MSDS · COA |
| Coating & Waterproofing Grade Gilsonite | ≤ 200 mesh | 150 – 200 °C | 5 – 25 % of compound | Spec · MSDS · COA |
| Sealer & Filler Grade Gilsonite | ≤ 200 mesh | 150 – 180 °C | Sealer: 15 – 35 % | Spec · MSDS · COA |