Production Application and Optimization of the CT80 Pipeline Steel for the Coiled Tubing
This paper describes the optimization of the desulfurization process in the production of CT80 pipeline.Based on the formation mechanism and the influence factors of the occurrence of HIC,measures have been taken to control the sulfur content in steel to the minimum and consolidate the rest sulfur to avoid the formation of Ca-O-S compound.After adjustment and optimization of the processes,the sulfur content decreases to the range of 0.0004%-0.0009%and the average sulfur content of the product is 0.0007%.Appropriate extension of soft-blowing after calcium treatment in RH vacuum degasser and appropriate soft-blowing flow can significantly reduce the number of inclusions.The average reduction is 46%.The average surface temperature of slab reduces 38℃ and the segregation improves significantly by increasing the consumption of secondary cooling from 0.5 l/kg to 0.77 l/kg.continuous casting slab center segregation Obviously improved,segregation become fragmented and narrower.steel plate banded structure removing,effectively improve its fatigue life,The quality control received the anticipative effect.
coiled tubing pipeline steel quality control
Shuping TANG Chuanqin LUO Shuibin LIU
Wuhan Iron and Steel Co.Ltd.General steelmaking plant,Wuhan,430080,Hubei,China
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
1081-1083
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）