1, wear-resistant high temperature alloy: according to the environment of high temperature wear characteristics, specially designed pure alloying by vacuum smelting, high temperature oxidation resistance and high temperature strength of special wear-resistant high temperature alloy, the forging overall drilling. Processing less defect and high reliability, high temperature strength wear-resistant composite, composite casting wear-resistant alloy 2: adopt to join particle wear-resisting, high temperature alloy matrix composite technology of precision casting molding. Without turning processing, casing high hardness, resistance to high temperature oxidation, but with a little casting defects do not affect high temperature wear resistance and impermeability, is to use the normal high temperature resistant casing, price moderate, temperature 800 ~ 1200 ℃. 3, ion permeability tungsten carbide: for stainless steel substrate by ion permeability injection technology on the surface casing injection of tungsten carbide particles. Hard, high strength, high Gao Ren, special wear-resisting, wear-resisting layer thickness of 0. 5 ~ 1. 5 mm, rigid toughening, smaller diameter to phi 8, good surface quality, use temperature 0 ~ 800 ℃. Wear-resistant thermocouple: according to the wear resistant casing material classification in the circulating fluidized bed, fluidized bed, cement rotary preheater smoke chamber temperature measurement will have granular material on wear-resistant thermocouple have washed, if the particle is more, scouring force is very strong, ordinary thermocouple protection tube can be worn in a very short period of time, it is improved to thermocouple protection tube material requirement, which requires wear-resistant thermocouple temperature measurement, wall need to upset at the same time, this will increase the thermocouple for life. Wear-resistant thermocouple according to wear casing material can be divided into three categories, and each one has its unique characteristics of their own