武钢硅钢厂CA_2线退火炉于1988年5月停炉检查,发现炭套工作段(钢板在上面移动的部位)表面粉化,粉粒呈炭黑色、暗绿色(Cr_2O_3),疏松,易脱落。第58根炭套表面,炭黑色、暗绿色(Cr_2O_3)粉末分块富集,呈花斑状。为探讨炭套蚀损原因,取了不同温度区段的试样,进行分析。 The CA 2 wire annealing furnace of WISCO silicon steel factory was shut down for inspection in May 1988. It was found that the surface of the carbon sleeve working surface (where the steel plate is moved) was surface pulverized and the powder particles were black and dark green (Cr 2 O 3), which were loose and easy to fall off. 58th charcoal surface, carbon black, dark green (Cr_2O_3) powder enrichment block, was a flower-like. In order to investigate the cause of erosion of carbon sheath, samples from different temperature zones were taken for analysis.