Normalization procedure was added before the transverse rolling for improving steel austenite grainfineness and removing mischcrystal structure.
在横轧前增加正火工序，改善钢的奥氏体晶粒度，消除混晶组织。
2
The grainfineness and the ore phase of the limestone in Wulongquan mine was measured and the study on calcining active lime with experimental upright furnace was performed.
对武钢乌龙泉矿石灰石的晶粒度和矿相组织进行了测试； 同时在实验室竖式炉内用石灰石煅烧活性石灰。
3
The scatter of WC grainfineness is referred to the fineness homogeneity of raw material W particle and the fineness of grain is influenced by the surface perfectness for thick W pattiel- es.