机械工程纯英版材料ppt作品.pptx

cast iron what is ? 4questionsquestions no.1classification of cast iron no.2 how to get grey cast iron and white cast iron no.3 what is carbon equivalent no.4how to get different matrix in the cast iron 8.1 summary power points: graphitization ironcarbon phase diagram the process chemical composition cooling condition answer: types of cast iron white cast iron gray pig iron mottled iron carbon can exist as: graphite (flakes) cementite grey cast iron flakefloccule spheroidal vermiform grey cast iron and white cast iron outcome gray pig iron gray pig iron gray pig iron white iron second stage completely not part not first stage completely completely completely not ？ ？ ？ carbon equivalent： ce=c+1/3(si+p) sipmns cr w mo v al cu ni co the influence the more the carbon equivalent and the slower the cooling velocity is, the easier to produce the gray pig iron. or ,the white cast iron. the influence of the carbon to the cast iron the number or big or small spread shape 8.2 grey cast iron grade/chemical composition/tissue functions resistance to pressure machinability surface hardened wear resistance heat treatment stress relief annealing graphitizingannealing surface heat treatment for what ? ? ? application engine cylinders transmission casing balance weight of large cranes and 8.3 malleable iron 8.3 malleable iron grade/chemical composition/tissue functionsproduction 8.3 malleable iron 8.4 nodular cast iron grade/chemical composition/tissue functionsproduction heat treatment 8.3 malleable iron 8.5 vermicular cast iron grade/chemical composition/tissue functionsproduction heat treatment 8.6 special property cast iron first wear resistant cast iron second heat resisting iron third corrosion resistant iron before the end of this class: i want to talk about the south china sea ! we all love our countries, but we are not the same country. by me if war comes tomorrow, this is every