论文部分内容阅读
常州钢铁厂缝式锻造炉(也称冲头炉),由于采用改进的S型双管热风喷嘴作燃烧器,喷火速度高达40米/秒,并且火焰直接灼烧炉墙,使炉衬热面承受1300℃以上的高温。另外,由于以重油为燃料,因而炉内呈还原性气氛。在这样恶劣的条件下应用耐火纤维,国内属首次,国外也未曾见报道。 1.纤维材料的选用硅酸铝耐火纤维的最高使用温度低于1260℃,显然不能适用于该炉。多晶氧化铝纤维由于不存在再结晶(也称失透或反玻璃
Changzhou Iron and Steel Plant slit forging furnace (also known as punch furnace), due to the use of improved S-type double hot air nozzle for the burner, flame spray speed up to 40 m / s, and the flame directly burning furnace wall, To withstand high temperatures above 1300 ℃. In addition, due to heavy oil as a fuel, the furnace was a reducing atmosphere. In such a harsh conditions, the application of refractory fiber, the first domestic, foreign have not seen the report. 1. Fiber material selection Aluminum silicate refractory fiber maximum temperature below 1260 ℃, apparently can not apply to the furnace. Polycrystalline alumina fibers recrystallize due to the absence (also called devitrification or anti-glazing