小口径高压锅炉管内部缺陷控制  

Quality Control over Internal Defect of Small Diameter High Pressure Boiler Pipe

作　　者：高展展[1] 朱人君[1] 梁海泉[1] 丁宏钧[1] 宁玫[1] 

机构地区：[1]天津钢管集团股份有限公司,天津300301

出　　处：《天津冶金》2014年第2期44-47,共4页Tianjin Metallurgy

摘　　要：针对天津钢管集团股份有限公司168厂覬88.9 mm以下小口径高压锅炉管探伤合格率一直较低的问题,通过保证顶头和芯棒表面的质量、增加张减机减壁率、提高张减终轧温度、使用磷酸盐代替硫酸盐作为硼砂组分、提高芯棒限动速度等措施,使小口径钢管内伤得到有效控制,探伤合格率稳定,探伤合格率平均达到95.5%。In order to solve the lingering problem of low qualification rate of high pressure boiler pipewith less than 88.9 mm diameter at inspection, measures were taken at Tianjin Pipe （Group）Corporation, i.e., ensuring the surface quality of plug and mandrel, increasing wall thickness reductionat stretch reducing mill, increasing the finishing rolling temperature of tension reduction, usingphosphate instead of sulphate as borax component, increasing mandrel retaining speed and so on. As aresult, the internal defect of small diameter pipe was effectively curbed and inspection qualification ratestable at an average of 95.5%.

关 键 词：内划道 高压锅炉管 探伤 合格率 

分 类 号：TK229.1[动力工程及工程热物理—动力机械及工程]