The existing similar products from high aluminum material, there is adhesion of aluminum and slagging, because the casing with no fixed position, easy in the cable hole sliding, affect the normal use. This product in the structure design, the lateral wall of the cable casing is provided with a clamping head, can effectively prevent the cable sleeve in the cable hole sliding; in materials and production process, preparation technology of high performance ceramic structure,production of high nitrogen compound ceramic cable ceramic casing, which has the advantages of good thermal stability, without cracking and long service life etc.. And can be customized according to customer requirements for processing shaped parts.