Die design<\/strong><\/h2>\nThe design of an extrusion profile has a large impact on how readily it can be extruded. The maximum size for an extrusion is determined by finding the smallest circle that will fit around the cross-section, this is called the\u00a0circumscribing circle<\/em>. This diameter, in turn, controls the size of the die required, which ultimately determines if the part will fit in a given press. For example, a larger press can handle 60\u00a0cm (24\u00a0in) diameter circumscribing circles for aluminium and 55\u00a0cm (22\u00a0in) diameter circles for steel and titanium<\/p>\nThe complexity of an extruded profile can be roughly quantified by calculating the\u00a0shape factor<\/em>, which is the amount of surface area generated per unit mass of extrusion. This affects the cost of tooling as well as the rate of production.<\/p>\nThicker sections generally need an increased section size. In order for the material to flow properly legs should not be more than ten times longer than their thickness. If the cross-section is asymmetrical, adjacent sections should be as close to the same size as possible. Sharp corners should be avoided; for aluminium and magnesium the minimum radius should be 0.4\u00a0mm (1\/64\u00a0in) and for steel corners should be 0.75\u00a0mm (0.030\u00a0in) and\u00a0fillets\u00a0should be 3\u00a0mm (0.12\u00a0in).<\/p>\n","protected":false},"excerpt":{"rendered":"
Extrusion is a process used to create objects of a fixed\u00a0cross-sectional\u00a0profile. A material is pushed through a\u00a0die\u00a0of the desired cross-section. The two main advantages of this process over other manufacturing processes are its ability to create very complex cross-sections, and to work materials that are brittle, because the material only encounters\u00a0compressive\u00a0and\u00a0shear\u00a0stresses. It also forms parts<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6231,6230],"tags":[],"yoast_head":"\n
Aluminium Profile Extrusion – Eas Aluminium<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n