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Aluminum extrusion speed with the impact of work on the mold


To ensure the impact on cross-section aluminum extrusion exit speed of the particle as the same, in addition to optimizing the mold with the structure and layout of the work, the work with the length (thickness) size usually have strict limits,herve leger sale, and generally 5mm ~ 10ram. As the work with a small thickness, so the pitch in the axial direction under the effect of squeezing, work with nearby areas will produce small quantities of elastic bending, and work with a slightly reduced cross-section (shown in Figure 12, where the first foot / - * __ Figure 12 die of work with local size Fig.12Localsizeofdieland (ExtrusionvelocitylOm / min) inch to 2mm). Numerical simulations also show that the higher aluminum extrusion speed, the work with a relatively narrow cross-section size more apparent. 5 Conclusions 1) Aluminum extrusion speed increase will increase the internal stress caused by mold, while causing the decrease of working with a cross-section size. 2) With the improvement of aluminum extrusion speed, die temperature rise is relatively slow pace. 3) work with the mold near the stress field and temperature field compared with other parts of the large, making it a major failure of the mold area. 4) The numerical simulation results in the production practice has been well proven. References JCaloska,Oakley sunglasses sale, JLazarev, ANospa1. VAtojkovski. Exitvelocityprofileattheextrusionprocessofaluminum squarepipe. SoutheasternEuropeFluentUsersGroupMeeting2002, Thessaloniki, GreeceJLangkruis,GHD Glätteisen günstig, WHKool,mbt cipő, SvanderZwaag. Assess-mentofconstitutiveequationinmodelingthehotde-formabilityofsomeoveragedA1-Mg-Sialloyswithva-ryingsolutecontent. Mat. Sci. Eng. A, 1999,266:135 ~ 145 Dong Xianghuai. Computer simulation of material forming. Beijing: Mechanical Industry Press, 2003,109 Influenceofexitvelocityatthealuminumprofileextrusi ononthedielandFUJianPENGBi-youLIJun (SchoolofMaterialScienceandEngineering, XiHuaUniversity, Chengdu610039China) Abstract: ThereI'Sanimportantinfluenceoftheexitvelocityatthe aluminumprofileextrusiononinvalidationofthedieland . Bythetestofnumericsimulation, undervariou######itvelocitiesthechangedrulesofstress, temperatureandlandsizeaboutthedieareanalyzedinthis paper. Thetestindicatesthatalongwiththeincreaseofexitvelo city, thestressindiewillincreaseandthetem-perature ~ riseindiewillslowrelatively. Becausestressandtemperaturearoundthedielandishighe rthanotherselse,vibram five fingers outlet, thedielandwillbecomeamainareaofdieinvalidation. Keywoir ~; aluminumprofile; exitvelocity; dieland; numericsimulation secluded tent dragonfly snail build ■ ■ ● ■ ● ● ■ ■]]] 123 [[[
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