Aluminium extrusion mould making is the process of creating a mould or die that is used in the extrusion of aluminium. Extrusion is a manufacturing process in which a material, such as aluminium, is forced through a die to create a specific shape or profile. To make an aluminium extrusion mould, the following steps are typically involved: 1. Design: The first step is to design the mould based on the desired shape or profile of the aluminium extrusion. This can be done using computer-aided design (CAD) software. 2. Material selection: The mould is typically made from a high-strength aluminium alloy, such as 7075 or 6061, which can withstand the high temperatures and pressures involved in the extrusion process. 3. Machining: The mould design is then transferred to a CNC machine, which will cut and shape the aluminium block into the desired mould shape. This process involves precision machining techniques to ensure the accuracy and quality of the mould. 4. Heat treatment: After machining, the mould may undergo a heat treatment process to improve its hardness and strength. This can help prolong the lifespan of the mould and ensure its durability during the extrusion process. 5. Finishing: Once the mould is machined and heat treated, it may undergo additional finishing processes, such as polishing or coating, to enhance its surface finish and protect it from corrosion. 6. Testing and adjustments: Before the mould is used in production, it is important to test its functionality and make any necessary adjustments. This may involve trial extrusions to ensure the mould produces the desired shape and dimensions. Overall, the process of aluminium extrusion mould making requires precision machining, heat treatment, and testing to create a high-quality mould that can withstand the demands of the extrusion process.