1_4468高強度雙相不銹鋼的精鑄(參考版)
2025-08-11 18:41本頁面
【正文】 2. Sichuan L ight New Mate2 rials Science and Technology Co. ,L td. , Chengdu, China) 2006,169。 3. L. K. Group, Shenzhen, China)2006, 26 (4) 226～228Abstract The failure of M300 steel for nozzle body in zinc alloy die casting machine was investigated. The failure is contributed to amounts of inclusions and net2like carbon in M300 steel aswell as tempered brittlity of M300 steel at high temperatures. Meanwhile, Fe2Zn corrosive pound formed by chem ical action between zinc alloy melt with M300 steel during high velocity and p ressure can erode crack on M300 steel nozzle to induce the p ropagation of the crack by impacting force of the zinc alloy melt,which can re2 sult in the failure of the M300 steel nozzle. The countermeasures of imp roving the service life of the nozzle body were p roposed.Key W ords: Z inc A lloy D ie Ca sting, M 300 Steel, NozzleBody, Fa ilureD g75 Ductile Ca st Iron Va lve in L ost Foam Ca sting XieM ingguo , W u La ifa, Cheng Guizhu, Sun Hongchao , Xu Zhengzheng (Anhui Chief2truck Group, Hefei, China) 2006, 26 (4) 236～237Abstract Dg75 valve case free machining in lost foam casting was introduced. The p recision guarantee of important assemble dimen2 sion, control of castings surface cleanness, carbon defects in the castings and surface ripp le were described also. The surface quali2 ty and dimension p recision can meet requirements by the imp ro2 ving the mould structure and p rocess, adjusting the parameters and pouring methods and app lying ceram ic gating system. The re2 pairing rate resulting from slight defects in surface is decreased to low than 10% from 90% , and finished p roduct rate reaches up to99%.Key W ords: L ost Foam Ca sting, D uctile Iron Ca stings, Dg75Throttle Va lve, Ceram ic Ga ting System, Carbur iza tionTherma l D eforma tion of D ie Ca sting D ie and Its Coun ter2mea sures Zhang Ho ngfeng, Lu Zh iw en (Nanyang Institute ofTechnology,Nanyang, China) 2006, 26 (4) 229～230Abstract The thermal deformation of the die casting die at high working temperatures can result in the block of the side drawing core and directing mechanism. The effects of thermal deformation on die casting die can be elim inated and service life of the die can be imp roved by adjusting the structure of slideway and direc2 ting mechanism.Key W ords: D ie Ca sting D ie, Therma l D eforma tion,W ork ingTempera tureElmi ina tion of Th in2wa lled in P ipe in L ost Foam Ca sting1211
醫(yī)療健康相關推薦
鄂ICP備17016276號-1