Blog
Omega Windows & Doors is committed to quality and sustainability. At the heart of this commitment is our remelt process, which allows us to cast aluminium logs right here in New Zealand.
This step supports our high-quality extrusion process and gives Omega Windows & Doors a unique advantage in the industry. Here’s how our remelt process works and why it’s so important.
Our process begins with casting aluminium logs, which are essential for the extrusion process that shapes our high-quality windows and doors.
McKechnie operates New Zealand's only remelt casthouse, offering complete control over the casting process. This ensures consistency in every aluminium log we produce, giving us confidence in the quality of our finished products.
A major part of our remelt process is recycling. We use aluminium scrap not only from our manufacturing but also from other New Zealand extruders. This minimises waste and helps to reduce our environmental footprint.
Recycling aluminium uses less energy than producing new (virgin) aluminium - up to ten times less. By choosing recycled materials, we’re actively contributing to a more sustainable future.
To ensure the highest quality, we closely monitor the chemical composition of each aluminium log. Our team uses a cutting-edge Optical Emission Spectrometer to test each batch, maintaining quality standards that exceed AS/NZS1866 requirements.
By carefully controlling the alloy composition, we achieve the strength and durability needed for long-lasting aluminium windows and doors.
Alongside composition testing, we verify material strength with a modern Tensile Testing machine. This step confirms that our products meet all mechanical standards, further ensuring durability and reliability.
Each batch is tested to guarantee it aligns with the mechanical property standards in AS/NZS1866, so every piece is built to last.
