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0375-6550666

Cast graphite mold

Product details

The cast graphite mold has high purity, high temperature resistance, solution corrosion resistance, good thermal shock resistance, high temperature mechanical strength, low thermal expansion coefficient, good electrical conductivity, thermal conductivity and chemical stability.

Casting graphite molds are used in the casting conversion process to combine many excellent properties and transform the metal from liquid to solid by heat transfer, which is the best molding mold currently used. The graphite mold has better high temperature resistance, and the performance is still stable at high temperature. The amount of heat rise and shrinkage is small and negligible. The graphite has good lubricity, and the molten metal is not easy to adhere to the mold during solidification, and has heat conduction. Good character, good wear resistance and high mechanical strength. In industrial production, in order to achieve the best casting results, not only the appropriate graphite raw materials, but also the design, processing quality and proper installation of the graphite molds are important. Artificial graphite is considered to be the most suitable material for continuous casting and semi-continuous casting of graphite molds. The production practice proves that due to the use of graphite molds, its thermal conductivity is good (thermal conductivity determines the solidification speed of metals or alloys) The mold's self-lubricating performance and other factors not only improve the speed of the mold, but also because the size of the ingot is accurate, the surface is smooth, the group is evenly organized, and the processing of the next process can be directly performed, which not only greatly improves the yield, The loss of waste is reduced, and the quality of finished products is also greatly improved. Graphite molds for casting are divided into vertical continuous casting method and horizontal continuous casting method due to different casting methods. The different application fields of the processing technology are different, but the graphite mold for casting plays a different role in the development of science and technology. The role.

Artificial graphite materials have been successfully applied to casting molds, such as zinc alloys and copper alloy castings produced from graphite molds made of artificial graphite materials, which have been used in automotive parts, etc. At the same time, graphite molds have been successfully used for centrifugation. In casting, some countries have used artificial graphite molds with a wall thickness of 25 mm or more to centrifugally cast bronze casings. In order to prevent burning of the artificial graphite mold, certain anti-oxidation terms can be adopted (oxidation measures vary from company to company and there is no certain standard). After casting a certain number of castings, if the inner surface of the mold is found to be burnt, the size of the inner hole of the mold can be enlarged to cast a large-sized sleeve (this is also an effective method for extending the cast graphite mold).
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