Ba carburizers ekabolami na ba carburateurs oyo emonanaka mingi mpe ba carburateurs graphitisés.
Ba carburateurs communs ekabolami na coke ya pétrole calciné mpe na charbon calciné. Coke ya pétrole calciné esalemi na coke ya retare ya raffinerie ya petrole calciné na 1400 degrés , mpe carburizer ya charbon calciné esalemi na anthracite ya qualité ya likolo oyo ezuami na 1200 degrés {4}
Carburizer graphitisé esalemi na coke ya pétrole calciné na nzela ya graphitisation na température ya likolo.
Caractéristiques ya performance ya agent ya carburisation .
Agent ya carburisation ezali matériel non métallique na point de fondue ya soki 1200 degré ~1300 degré . agent ya carburisation ya qualité ya likolo ezali na performance stable, vitesse ya absorption ya mbangu mpe taux ya absorption ya likolo.
Principe d'action ya agent ya carburisation .
Agent ya carburisation e jouaka mingi mingi rôle ya ko augmenter carbone na acier na casting.
When the cupola is used to melt cast iron, the molten iron passes through the hot bottom coke in the form of droplets, and the effect of carburization is good. When smelting synthetic cast iron (scrap + carburizing agent) in induction furnace, carburizing agent is essential. Replacing pig iron with carburizing agent can reduce the "harmful heredity" in pig iron and improve the Qualité métallurgique ya fer fondu.
According to different smelting processes, carburizing agents can increase the mechanical strength of steel and castings. The carburizing agent can promote the nucleation ability of graphite in molten iron, increase the amount of nodular graphite in nodular cast iron, improve the microstructure of gray cast iron, and improve the strength of gray cast iron, so that the carbon element appears as A-type graphite in the casting to obtain fine and uniform graphite, and promote the Processus ya spheroïdes mpe ya inoculation.
There are many kinds of raw materials and different production processes for carburizers. It is not said in the market that graphite powder is used for pressing and forming. This production method needs to add too much binder for forming, and the carbon content generally can not meet the requirements of high-quality carburizing agent. The pressed graphite powder is a solid block without multi pore structure, so its absorption rate and absorption rate are not as good as those of calcined and calcined carburizers. High quality carburizing agent generally refers to the carburizing agent after graphitization. Under high temperature conditions, the arrangement of carbon atoms takes on the microscopic form of graphite, so it is called graphitization. Graphitization can reduce the content of carbon in the carburizing agent, increase the carbon content of the carburizing agent and Bokitisaka biloko ya soufre. .
When the carburizing agent is used in casting, it can greatly increase the amount of scrap steel, reduce the amount of pig iron or not use pig iron. Most of the carburizers are suitable for electric furnace smelting, and a small number of carburizers with particularly fast absorption speed are used for cupola. For the feeding method of electric furnace smelting, the carburizing agent shall be added together with scrap and other furnace materials, and a small amount can be added on the surface of molten iron. However, it is necessary to avoid feeding into molten iron in large quantities, so as to prevent too much oxidation and the situation that the carburization effect is not obvious and the carbon content of castings is not enough. The addition amount of carburizing agent shall be determined according to the proportion of other raw materials and the carbon content. For different types of cast iron, Mitindo ndenge na ndenge ya ba agents ya carburisation esengeli koponama engebene na bamposa. Makambo ya agent ya carburisation: Carbone ya peto oyo ezali na matériel graphitisé eponami mpo na kokitisa bosoto eleki mingi na fer ya ngulu. Boponi malamu ya agent ya carburisation ekoki kokitisa ntalo ya bokeli ya ba castings.
