The production line of high ductility cold rolled ribbed steel bar is a kind of surface forming and ribbing equipment which is made of hot rolled wire rod through cold rolling forming and tempering heat treatment process.

The invention relates to a high-ductility cold-rolled ribbed steel bar production line, which is a surface forming and ribbing device manufactured by a hot-rolled wire rod through a cold-rolled forming and tempering heat treatment process, and mainly comprises a wire rod feeding machine, a rolling mill group, an intermediate frequency heat treatment device, a flying shear machine and the like. The process flow includes butt welding of wire rod, mechanical descaling, cold drawing and reducing, notch sizing and electric heating tempering treatment at 500-600 ℃, the rolling specification is Φ5-12 mm, the rolling speed can reach 9 m/s, and the service life is prolonged by using tungsten carbide rollers. The production line has won the national utility model patent, equipped with automatic feeding machine and double heating source cooling water circulation pipeline, to achieve the whole process of automatic continuous production.

The yield strength of the produced CRB600H grade steel bar reaches 545-565 MPa, the tensile strength exceeds 600 MPa, and the bond strength with concrete is more than twice that of the common steel bar. Compared with the hot-rolled plain round steel bar, the steel can be saved by 35% -40%. The product is applied to engineering fields such as high-speed rail, bridges, subways and the like, and the production process does not need coal and does not discharge waste water, waste gas and waste residue. The production line is manufactured by Cangzhou Jintongcheng Machinery Co., Ltd.