1　概述热风阀是热风炉系统中的主要设备之一。热风阀由阀体、阀板和阀盖 3大部件组成 ,其中阀板是热风阀承受高温风和高压风 (工作温度 90 0～ 1 3 50℃ ,工作压力 0 1～ 0 5ＭＰａ)的关键部件。使用中 ,热风阀的损坏约 90 %是阀板的损坏造成的 ,所以说阀板结构形式及质量直 1 Overview Hot air valve is one of the main equipment in hot blast stove system. Hot air valve consists of valve body, valve plate and valve cover 3 large parts, of which the valve plate is hot air valve withstand high temperature wind and high pressure air (working temperature 90 0 ~ 1350 ℃, working pressure 0 1 ~ 0 5MPa) of the key components . Use, hot air valve damage is about 90% of the damage caused by the valve plate, so that the structure and quality of the valve plate straight