Study on Manufacturing Method of the Ablative Composite Material Hood
Author of the article:GUO Zaizai;ZHAO Qianying;LI Guobin;CAO Jianwu;YAN Dongming;YANG Shuangyan;LIU Fafu;TONG He
Author's Workplace:No.52 Institute of China North Industry Group,Yantai Branch,Yantai 264003,China;Tianjin SDIC Jinneng Electric Power Co.,Ltd,Tianjin 300480,China
Key Words:lost foam casting metal silica ceramic layer ablative hood
Abstract:The key operation techniques of metal smelting and pouring process and measures to improve the purity of molten steel were analyzed.The EPC process was adopted,under vacuum and negative pressure,the heat resistant stainless steel liquid penetrates into the sand gap of silica sand coating to form a 2.0~2.5 mm thick metal and sand heat resistant sintered ceramic layer.The fabrication method of ablative composite hood was studied by combining with the metal matrix of the hood.The results show that the service life of ablative hood in pulverized coal combustion zone of power plant boiler was more than 1.3 times that of metal hood.