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  • 06 Jun . 26

    Metal Extrusion Basics

    1. Historical Background The first hydraulic press was tested by J. Bramah in England in 1810, designed specifically for extruding lead. Later, in the 1890s, A. Dick applied the same principle to alloys with higher melting points in Germany. Dick used a pressure head (or disc) separated from the ...

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    06 Jun . 26

    Extrusion Stem for Aluminum Profiles

    The material most commonly used for extrusion stems is high-quality forged AISI H-13 (1.2344) hot work tool steel and forged tool steel. The stem is heated to the austenitizing temperature, quenched, and tempered to achieve a hardness in the range of 415-460 Brinell (Rockwell C44-48). Its streng...

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    30 May . 26

    Design and Stress Analysis of 7xxx Series Aluminum Alloy Extrusion Dies

    1 Research Status of 7xxx Series Aluminum Alloy Extrusion 1.1 Material Characteristics of 7xxx Series Aluminum Alloys 7xxx series aluminum alloys are primarily alloyed with zinc and contain small amounts of magnesium and copper. Super-hard aluminum alloys additionally contain zinc, lead, magnesiu...

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