The continuous hydrochloric acid pickling process is used to remove the iron oxide layer on the surface of the hot rolled strip, and the irregular edges of the strip are cut off to provide qualified hot rolled sheet raw materials for the next process. The pickled strip is a pure iron surface that can be cold rolled or hot galvanized.
The continuous pickling unit is equipped with an automatic argon arc welding machine and a broken lining straightening machine at the inlet. The process section adopts a multi-stage shallow tank turbulent acid pickling process and a multi-stage water rinsing process, and a disc shear and an electrostatic oiling machine are arranged at the exit section. Wait.
Annual production scale: 800,000-1,200,000t/a
Raw material: carbon steel hot rolled coil
Steel grade: CQ, DQ, DDQ, IF, HSLA, W440-W1300 silicon steel
Material specifications: 1.5-6.0mmx width: 650-1650mm
Roll diameter: I.D.Φ760/Φ610mmO.D.MaxΦ2150mm Maximum roll weight: 30t
Hot rolling coiling temperature: Max 670 degrees （IF < 720 degrees）
Process speed: Max150mpm
Pickling time: 25-30sec
Use SIEMENS or ABB electrical control systems
Roll->Unwind->Cut head->Welding->Inlet looper->Broken pull-correction->Pickling->Water rinse->Drying->Export looper->Cut edge->Oil-- Cut->Winding->Unloading->Packaging.