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Carbon brick is with carbon as raw material, adding high temperature resistant binder amount of neutral refractory products. raw material Carbon brick raw materials including anthracite, coke and graphite, and asphalt, tar and anthracene oil binder. Anthracite volatile small, compact structure, production of carbon brick multi to it as aggregate, join the metallurgical coke (coke), to pitch as binder. Production process The production process of carbon brick is similar to that of other refractory bricks, but it must be prevented from oxidation at high temperature. Under the reducing atmosphere. Anthracite before use to first roasting, to exclude volatile, sulfur content, moisture and improve anthracite volume stability, mechanical strength and oxidation resistance. The coke should be dried first, so as not…
Why do we use graphite manufacturing bearing? 1).Considering from the perspective of the friction loss, the graphite has excellent friction coefficient because the friction coefficient of bearing material is as small as possible. 2).For the structure, graphite is a solid material, it is oil-free lubrication , it reduce the oil lubrication system so as to reduce the failure rate; 3).The graphite has high chemical stability; 4).The cheap price and strong versatility,the ordinary metal material for bearing is undesirable apparently if it is operated at high temperatures, the graphite material which has the high temperature resistance and more cheap price than the custom-made high temperature strength materials is available. The manufacturing method of general graphite bearing can be achieved by the…
In twentieth Century, copper was widely used as electrode material in EDM. At that time, only in the production of large electrodes and mold processing requirements are not high or rough machining, graphite materials will become an alternative. Some of the early contact with the graphite electrode of the technical staff has a general impression: dirty, surface effect is not good, the processing efficiency is not high and so on. With the development of high and new technology, and constantly improve the manufacturing process of graphite material, it can satisfy different EDM demand of graphite materials emerge in an endless stream, market graphite for high speed milling machine tool arises at the historic moment, numerical control electric spark machine tool…
