铜扁线连续挤压过程温度场的数值模拟.pdf

32 3 2007 6 Vo l 32 No 3 FORGING STAMPING TECHNO LOGY Jun . 2007 * 1* * 1 2 1 1 ( 1 100088; 2 650 102) : - Def orm3D 12564 rad s- 1 1 2564 r ad s- 1 : ; ; ; : TG371 : A :(2007) Numerical simulation of temperature field of copper flat wire continuous e trusion forming 1 1 2 1 1 WU Pengyue , XIE Shuisheng , YAN Ming , CHENG Lei , HUANG Guojie ( 1State K ey L abor ator y f o r Fabr ication and P ro cess of N onf err ou s M etals General R esear ch In stitute f or N onf err ou s M etals Beij ing 1000 88 China; 2 Yunnan Copper Pr odu ct s Co. L td. K unm ing 650102 China) Abstract: T he continuou s ex tru sion f or m ing ( CO NF ORM ) pr ocess of copper f lat w ire w as stu died by threedim ensio n al f initeelem ent m ethod b ased on So ftw are Def orm3D. T he rigidv isco plastic co nstitut ive equ ation w as employ ed in t he mo del . Dist ribution of tem per at ur e f ield of copper flat w ir e continuou s ex tru sion f orm ing w as o bta ined under diff er ent ext ru sion w heel v elo cities in the f o rm ing process . Def o rm atio n bo dy temp erature w as increased rem ar kably due to f rictio n and def o rm atio n pow er in t he CO N FO RM pr ocess . T he incr eased t em perat ur e w as in t he compression w heel pr essdow n and up set stag es . So the incr ease of def o rm atio n body temper atur e w as m ainly fro m def or m ation po w er . T he die could be so ftened w hen the ex tr usio n w heel v