Grain Refiner products are available in tablet form and are used for grain refinement of aluminium and its alloys. They help transform coarse grain structures into fine, uniform and equiaxed grains, improving casting quality and material performance.

Product Range

• Grain Refiner 2 – Salt-based grain refining tablets for aluminium and its alloys.
• Grain Refiner 11 – Phosphorus-based grain refining tablets designed for high-silicon and hypereutectic aluminium-silicon alloys.
• Grain Refiner N2 – Environment-friendly grain refining tablets designed for low-smoke and low-odour operation.

Purpose

Aluminium and its alloys normally solidify with coarse columnar and equiaxed crystals. An excessively coarse grain structure can cause poor feeding characteristics, cracking during metal working and reduced response to surface treatment processes. Grain Refiner helps overcome these issues by promoting the formation of fine and uniformly distributed equiaxed grains.

In hypereutectic aluminium-silicon alloys, primary silicon can precipitate as coarse particles that tend to cluster. This may negatively affect feeding characteristics, tensile strength and wear resistance. Grain Refiner 11 is formulated for refining primary silicon in these high-silicon alloys.