Practice of X80 pipeline steel production

Adopting the narrow scope of composition control, according to the specifications and performance requirements, the amount of micro alloy elements was adjusted, and the cost of raw materials for X80 pipeline steel was decreased; the effect of protection in ladle shroud, tundish and mould was improved, constant casting speed was used, dynamic soft reduction and big chamfer mould were improved, the surface, the internal quality and the number of casting furnace were improved, and the cost of production X80 was decreased; Adopting the hot charging technology to decrease the energy consumption, improve the production rhythm; In this way, the high-efficient and low-cost production of X80 pipeline steel were realized.