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Carbon steel push-pull pickling unit (PPPL)

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The push-pull hydrochloric acid shallow groove turbulent pickling process is used to remove the iron oxide layer on the surface of the hot-rolled steel strip and cut off the irregular edges of the steel strip to provide qualified hot-rolled plate raw materials for the next process. The steel strip after pickling has a pure iron surface and can be cold rolled or hot-dipped galvanized.
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  The push-pull hydrochloric acid shallow groove turbulent pickling process is used to remove the iron oxide layer on the surface of the hot-rolled steel strip and cut off the irregular edges of the steel strip to provide qualified hot-rolled plate raw materials for the next process. The steel strip after pickling has a pure iron surface and can be cold rolled or hot-dipped galvanized.

  Unit characteristics

  Using single unwinding non-continuous type; using hydrochloric acid multi-stage shallow groove turbulent pickling process and multi-stage water rinsing process

  Annual production scale: 200,000-600,000t/a

  Raw material: carbon steel hot rolled coil

  Steel grade: CQ, DQ, DDQ, IF, HSLA, W440-W1300 silicon steel

  Raw material specifications: 1.5-6.0mmx width: 650-1650mm

  Roll diameter: I.D.Φ760/Φ610mmO.D.MaxΦ2150mm Maximum roll weight: 30t

  Hot rolled coiling temperature: Max670 degrees (IF<720 degrees)

  Threading speed: 30-60mpm

  Process speed: Max150mpm

  Pickling time: 25-30sec

  adopt SIEMENS or ABB electrical control system

  Production process

 
生产工艺流程
 
  Coiling-uncoiling-straightening-head cutting-corner cutting-HCL pickling-water cleaning-drying-trimming-inspection-tail trimming-oiling-coiling-unwinding
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