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At present, the graphite mould is widely used in the following aspects: Graphite mould for continuous casting and semi continuous casting of graphite mould In recent years, the domestic and foreign is to promote the state of molten metal directly from the continuous (or semi continuous) production of rods or tubes, and other advanced production methods. Domestic copper, copper alloy, aluminum, aluminum alloy and other aspects have begun to use this method. Artificial graphite is considered as the most suitable material for continuous casting or semi continuous casting of nonferrous metals. Production practice has proved that due to the adoption of the graphite mold, because of its thermal conductivity is good (thermal conductivity determines the solidification rate of metal or…
In recent years, with the development of mold industry, the graphite mold continue to impact the traditional mold market, the graphite itself has the characteristics which can not be replaced by other metal materials, the graphite has been used as the preferred material of mold manufacturing. In the practical application of graphite mold, the oxidation resistance of graphite mold is the focus of the industry. In fact, to do a good job of graphite mold impregnation is the main means to solve the general oxidation resistance, then how to impregnate the graphite mold in the actual operation ? First, paying attention to the material of graphite mold impregnation vessel. The impregnation vessel can select suitable materials for production according to…
The graphite crucible for melting silver has strong resistance to high temperature, small thermal expansion coefficient and small resistance performance, especially for acid and alkali corrosion resistance, it has a good chemical resistance to corrosion. The graphite crucible for melting gold is dipped and coated with anti oxidation coating, the high temperature graphite will penetrate into the pores of the graphite crucible, and empty the space to form a protective film.This layer of protective film which can effectively cut off the oxidizing reaction after the contact of the air with the crucible, it won’t crack and shed in the high temperature can make graphite crucible in the construction of the delay and the oxidation, which prolongs the service life of…
