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Making graphite,SiC,clay,silicon powder etc.as the raw material to process the graphite SiC crucible,the below are some results about the oxidation resistance from different factors such as:the raw material constitution,firing temperature,the method of forming and the different coating on the surface. 1) The firing temperature has a big influence on the density,and the density will lead to the service life of the crucible. When the temperature reach 1150 centigrade,the porosity of the graphite-SiC crucible is the lowest,and the density is the best. 2) The content of the SiC is also very important to the oxidation resistance of the graphite crucible,with the content of the SiC increasing,the porosity of the crucible is reducing,and the performance of the oxidation resistance will be better.…
Graphite heat exchanger is a heat transfer device made of graphite. The graphite in the manufacture of heat exchanger should be non transparent, and is often used in the non - permeable graphite and graphite. Structure The graphite heat exchanger can be divided into 3 types: block type, tube shell and plate type according to its structure. A piece of hole: a plurality of bulk graphite assemblies that are formed by a plurality of holes. Shell and tube type: tube shell type heat exchanger in graphite for heat exchanger occupies an important position, according to the structure is divided into two kinds of fixed and floating head. Plate: made of graphite bonding plate heat exchanger. In addition, there are immersion,…
Although the definition of isotropic graphite in the world needs to be further defined, it is generally to measure some physical properties of the product's diameter and length. The ratio of the thermal expansion coefficient is expressed as the ratio of the resistivity. The large scale graphite diameter of the advanced countries and other industrial technology has reached 1.5 m, the length is 3%, the bulk density is g/cm 1.95-2.0, the anisotropy ratio is reduced to 1.05. In addition to the use of ordinary petroleum coke, the use of modified asphalt, tar, coke, oxidized petroleum coke, petroleum coke, natural graphite, etc.. And other static pressure graphite by high pure graphite pressed. Static pressure graphite is a new product developed in…
