1. The heat treatment quality of the aluminum extrusion die directly affects the service life of the extrusion die. The die is hardened by "+" tempering several times to reach the hardness requirements. Quenching is to improve the hardness of the die, and multiple tempering is to improve the toughness of the die and stabilize the internal organization. The hardness value of the die heat treatment is specified as follows: large aluminum extrusion die (F>500mm), HRC45-48; Mwayen mwazi (F300 ~ 500mm), HRC 47-50; Ti extrusion mouri (F<300mm), hrc48-51;="" test="" three="" points="" on="" the="" same="" plane="" of="" a="" set="" of="" molds,="" and="" the="" hardness="" values="" of="" each="" point="" should="" be="" qualified="" within="" the="" specified="">
2. Yo ta dwe peye atansyon espesyal nan pwen sa yo nan pwosesis tretman chalè nan mouri extrusion:
a. Pousantaj nan chofaj nan seksyon an tanperati ki wo yo ta dwe vit, ak tan an kenbe pa ta dwe twò lontan, konsa tankou yo anpeche overburning oswa surchof nan mwazi an extrusion. Sichofe -- grenn koryas, ki boule -- eleman ki ba pwen k ap fonn ak enklizyon pral fonn;
b. Tanperaman extrusion aliminyòm mouri nan tan apre asouvisman pou anpeche fant;
c. Lè yo jwenn dite nan mouri a extrusion ensifizan oswa inegal apre tretman chalè, li ta dwe rkwit, epi tretman chalè a ta dwe fèt ankò dapre pwosesis la (lè valè dite a se mwens pase HRC35, rkwit la pa pèmèt, epi tretman chalè a fèt dirèkteman);
d. Pou gwo aliminyòm extrusion mouri oswa fini mouri ak kavite konplèks, yo ta dwe ajoute yon rediksyon estrès ak tanperaman pwosesis (pou elimine machin elektrik ak estrès MACHINING, se sa ki, elimine estrès tèmik ak estrès òganizasyonèl);
e. Ta dwe mouri trempe tanperati lwil oliv dwe? 100 degre asire efè trempe.
