陶瓷复合涂层炉底辊结瘤现象研究

对陶瓷复合涂层炉底辊辊面结瘤现象，采用XRD、SEM和EPMA等手段进行取样分析研究，结果表明，陶瓷复合涂层炉底辊表面结瘤的瘤子主要成分是铁。在金属铁层与陶瓷涂层之间，形成一层约200 mm的金属陶瓷混合层。金属瘤子的形成是一个积累过程，最初是较大铁颗粒(40 mm×20 mm)粘附，或超细铁颗粒(φ2～3 mm)堆积在辊面上，并与金属陶瓷混合层中的铁，形成多点紧密结合，造成辊面粗糙，且不易磨掉，在与钢板摩擦过程和磨辊过程中，导致多层铁的大量堆积，形成较大的瘤子。因此，金属陶瓷混合层的形成陶瓷涂层是炉底结瘤的主要原因。

Charact erization of Build-upson Ceramic Coating Rolls

The build-up phenomena of ceramic coated rolls were studied by XRD, SEM and EPMA. Results showed that the main composition of build-up was iron. A 200mm thick iron-ceramic mixed layer was formed between the build-up and ceramic layer. The formation of build-up was an accumulating process. At first some relatively large iron particles or superfine iron powders stuck to the Fe phase in iron-ceramic mixed layer and therefore a lot of iron piled up on them during friction with steel strip to form a large build-up. It was concluded that the iron-ceramic mixed layer promoted the formation of build-ups.