High quality aluminium wire needs to be clean and free from imperfections. Wet blasting cleans the surface removing all contaminants and oxides, leaving feeder wire perfectly clean for extrusion.
It also produces a smoother surface finish by cushioning the impact of the abrasive particles with water. This reduces the risk of surface damage and results in a more uniform finish free from imperfections and that is better for extrusion because…
• Surface finish - The final extruded aluminium wire has a higher quality finish, important for both aesthetic and functional purposes.
• Consistency - Uniformity in the surface texture and diameter of the wire ensures consistency in the final product, crucial for applications where precise dimensions are necessary.
• Strength and durability - Surface imperfections like scratches, dents, or roughness can act as stress concentrators, which may lead to mechanical failure under load or during use. A smooth surface helps maintain the mechanical integrity of the wire.
• Fatigue resistance - A uniform surface reduces the likelihood of fatigue cracks developing, enhancing the longevity and reliability of the wire in applications where it is subjected to cyclic loading.
• Reduced electrical resistance - Surface irregularities can increase the electrical resistance of the wire. A smooth surface helps maintain optimal electrical conductivity, which is particularly important in electrical and electronic applications.
• Minimised signal loss - For applications in telecommunications and data transmission, a smooth surface helps minimise signal loss and interference, ensuring efficient performance.
• Reduced wear and tear on extrusion dies - Surface irregularities can cause increased wear and tear on extrusion dies and other processing equipment, leading to higher maintenance costs and downtime.
• Adhesion of coatings: A smooth and uniform surface is essential for the proper adhesion of coatings or plating materials. This is important for applications requiring additional protective or functional layers, such as insulation or corrosion-resistant coatings.
• Appearance and performance: For wires that are coated or painted, a smooth base surface ensures that the coatings are applied evenly and perform as intended, enhancing both the appearance and functionality of the final product.
