The high-temperature heating wire is the most widely used, the largest amount of heating material. The disadvantage is that the work under their own at a very high temperature (hot state), and prone to oxidation in the air and blown; to analyze from the electric energy conversion, leaving the energy loss due to the partially visible; heating wire is often spiral state, the power generated when the inductive reactance effect. 
 Mainly include two categories of high-temperature furnace of iron chrome aluminum wire and high-temperature nickel-chromium heating wire. The former is a ferritic structure of the alloy material, the latter alloy is austenite. In addition, there are some special purpose electric heating alloy wire such as tungsten wire, molybdenum wire. 
 The heating wire is commonly used nickel-chromium alloy, the temperature can exceed 1000 ° C 
 YGJ5 Series Pit Furnace structure to ensure that the manipulation of insurance. Pit back to the stove factory matched automatic temperature control cabinet and cut off. Thermocouple. Shell made of steel plate and steel cylindrical furnace. Lid inner surface of stainless steel. Lining 0.6g/cm3 energy-saving ultra-light porous resistance gap filling compressed insulation powder. Resistance wire 0Cr25A l5 high resistance alloy wire wound into a spiral installed in the furnace of fire insulation brick building. Lining set with experimental EAF shell laminated aluminum silicate fiber felt insulation. The cover assembly of the heat-resistant stainless steel shaft made of breeze leaves put silk brick. The deployment of the furnace stainless steel loading basket. Lid using a manual lever movements. In order to uniformly heated workpiece. The workpiece in the heating process, the hot air circulating fan. Hot air in the return to stoves compete cycle to ensure that the workpiece is uniformly heated. In order to ensure that the insurance dominated near the lifting mechanism is equipped with limit switches, power lid is closed (and obligations). When the lid to close the limit switch to cut off the power manipulation, this switch back to the stove to manipulate the cabinet power supply interlock. 
 Source: Luoyang City Yongtai test equipment research center http://www.lyytdl.com 
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