Brass extrusion is a fundamental manufacturing process used to create long sections of brass with a continuous cross-section. This highly efficient method produces a wide variety of profiles essential for numerous industrial applications.
The Hot Extrusion Process
The process begins by heating a brass billet to a specific temperature (typically between 600°C and 800°C, depending on the alloy). The heated metal is then forced under high pressure through a custom-shaped die. This continuous process aligns the grain structure of the metal, enhancing its mechanical properties.
Common Profiles and Tolerances
Extrusion can produce an array of standard and custom profiles, including solid rods, hollow tubes, hexagons, and complex custom shapes. Advanced die design and precise temperature control allow manufacturers to achieve very tight dimensional tolerances and excellent surface finishes directly from the press.
The resulting extruded profiles are often used as raw material for further CNC machining. Calculate the weight of extruded brass profiles using our Weight Calculator.
Frequently Asked Questions
What temperature range is required for brass rod extrusion?
Brass billets are preheated in induction furnaces to 680°C–780°C before being extruded through hardened steel dies under hydraulic pressures reaching 1,500 to 3,000 metric tons.
How does cold drawing improve extruded brass rod tolerances?
Extruded brass rods undergo post-extrusion cold drawing through precision carbide die dies, tightening outer diameter tolerances to h9/h8 and increasing tensile yield strength.
What shapes can be produced via brass profile extrusion?
Direct extrusion produces round bar stock, hexagonal rods, square bars, hollow architectural profiles, and custom hollow pin sections.
