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The refractory material , graphite and graphite products have the properties of high temperature resistance and high strength. They are mainly used to make graphite crucible in metallurgical industry. Commonly it’s used as a protective agent for steel ingot in steel making. Graphite is often used as lubricant in mechanical industry. The lubricating oil often can not be used under the condition of high speed, high temperature and high pressure, but the graphite wear resistant material can be operated at a temperature of 200~2000 DEG C at a high sliding speed without lubricating oil. The piston cup, sealing ring and bearing which are made of graphite material are used in a lot of equipment conveying corrosive medium widely, they do…
Graphite rupture disk is the rupture disk which is impregnated by resin After a lot of molding and can withstand the high corrosion.The graphite rupture disk is a special type of safety device, it is mainly used in high corrosion condition and can bear any invasion from the strong corrosive chemicals. The rupture disk utility model is a non closed pressure relief device composed of a blasting piece (or a bursting sheet component) and a clamping device (or a support ring). When it is under the given blasting temperature and the pressure difference between the two sides of the bursting disc reaches the preset value, the rupture disk instantly moves (breaks or falls off) and releases the fluid medium. There…
Pistons for internal combustion engines have been made of such materials as cast iron, steel and aluminum. Most pistons manufactured today are made of aluminum. However, aluminum has low strength and stiffness at elevated temperatures, and aluminum has a large coefficient of thermal expansion. A new piston concept, made of carboncarbon refractory-composite material, has been developed that overcomes a number of the shortcomings of aluminum pistons. Carbon-carbon material, developed in the early 1960's, is lighter weight than aluminum, has higher strength and stiffness than aluminum and maintains these properties at temperatures over 2500°F. In addition, a low coefficient of thermal expansion and a high thermal conductivity give carbon-carbon material excellent resistance to thermal shock. An effort, called the Advanced Carbon-Carbon…
