Ductile casting knowledge don't you know? - Ductile casting

by:XEX     2021-04-02
Ductile casting is a casting process, are now made from rare earth magnesium nodulizing agent, cupola and grey are the same. In order to guarantee good spheroidizing, to control the content of sulfur and phosphorus lower. Considering the temperature loss, the temperature of the molten iron should be higher than grey. According to the production of ductile iron grades, sometimes to control the carbon content, to add a certain percentage of the scrap steel in charge. To do a hot metal ladle, sampling a small spoon, triangle specimen and cylindrical specimen each one. On the lathe down steel several turnings, straw ash. Mixing of hot metal stirring rod ( Steel in the head package include 10 mm thick graphite or carbon powder. Blowing in the former, the rare earth alloy, ferrosilicon, ferromanganese and other alloy into points are required for the product to hit into granularity of around 15 mm small pieces. Per package will weigh of molten iron. The casting process can be divided into three basic parts, namely, cast metal preparation, mold preparation and casting processing. Casting metal refers to the casting of metal materials used for pouring castings in production, it is a kind of metal elements as the main components, and join other metal or nonmetal elements and composition of the alloy, traditionally known as the casting alloy, mainly has cast iron, cast steel and nonferrous alloy casting. Metal smelting is not only a pure melt, include smelting process, the metal poured into the mold, in terms of temperature, chemical composition and purity are expected requirements. Therefore, in the process of smelting are going to have to check the test and quality control for the purpose of all kinds of liquid metal in the provisions to rear can allow gating. Sometimes, in order to meet the higher requirements, in the introduction to the liquid metal processing outside the furnace, such as desulfurization, vacuum degassing, refining outside the furnace, pregnant or modification treatment, etc. Metal smelting of commonly used equipment cupola and electric arc furnace, induction furnace, resistance furnace, furnace, etc. , ductile casting knowledge don't you know?
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