Pickling Lines
Pickling Lines

Pickling Lines — Clean and scale-free surfaces for optimized downstream processes

The increasing demand for advanced steel grades and added value products drives steel producers to seek a more efficient pickling process.

Pickling Lines have to be optimized and ready to process many different steel grades, and provide precise control of strip tension, accurate strip guiding, high quality pickling control, fast and stable processes with faultless strip tracking.

Pickling lines

To achieve the highest strip cleanliness and high surface quality with a reliable and cost-efficient process Primetals Technologies offers modular continuous and Push-Pull Pickling Lines. They are supplied with compact Scale Breakers and customers have the choice of different pickling concepts (i Box, turbulent shallow or flat tanks).

Continuous Pickling Lines

Our Continuous Pickling Lines feature a modular design, high pickling efficiency, economical operation and are integrated with the latest advanced technologies.
The line can be also combined with a Galvanizing Line (CPGL – Continuous Pickling and Galvanizing Line).

Push-Pull Pickling Lines

For the pickling of up to 1,000,000 tons of strip per year depending on the product mix, Push-Pull Pickling Lines offer significant advantages in terms of investment costs and operational flexibility (frequent change of strip dimensions and steel grades) with uniquely designed V-shape flat pickling tanks.

 

Main Benefits

  • Broad range of pickling technology available to cope with customer expectation
  • Modular design to optimize operation and maintenance practices and cost 
  • High efficient pickling rates to achieve a surface clean and free of scale
  • Special anti-stain system that does not require chemical additives
  • Energy efficient design of the fume extraction and sealing system

Mechatronic machines for Pickling Lines

In-house mechatronic machines designed, assembled and tested in our Primetals Technologies  workshops:

 

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Pickling Optimizer

Highest Pickling Performance

Calculation of scale thickness and state of iron oxide

  • Head-end, body, tail-end
     

Optimum strip speed including speed range based on chemical-physical model

  • Calculated from coil primary data
  • Considering actual bath temperatures
  • Considering actual concentration values in each pickling circuit
  • Calculated for different segments (head-end, body, tail-end)
  • Results transferred to Speed Optimization System of PLTCM
     

Forecast calculation, up to 100 coils in advance

  • Temperature gradient in pickling bath
     

Cyclic calculationof pickling rate according to actual context (strip, temperatures…)

Lifecycle Services - improve performance while reducing costs

Service and support from a single source — fast, experienced, reliable

As your lifecycle partner, we provide you with comprehensive operational support, which helps you operate your pelletizing plant at the lowest cost possible. Our portfolio includes maintenance and repair services as well as the fast delivery of original manufacturer components, produced in-house according to the highest standards of quality.

We fully integrate maintenance organizations into our customers’ organizations, thereby proving what it means to be a true lifecycle partner. The result of this win-win relationship between steel plant operators and Primetals Technologies is continuous improvement in equipment performance, product quality, and total cost of ownership.

Our customers can rely on fast and uncomplicated support in the event of an unexpected component breakdown, wherever their facility may be located. Backed by global resources and a worldwide supplier chain, we can promptly provide you with top-quality original spare and wear parts at competitive prices. We keep a range of key parts in stock to ensure their fast availability.

Want to know more? Go to Primetals Technologies Lifecycle Services site

 

Integrated Plants & Solutions for pickling lines — Experience that Matters

Please follow the corresponding links to learn more about our competences:

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TECHNOLOGY AND MODERNIZATION PACKAGES

Get striking results with incremental investments

PL-TCM Coupling Couple CPL and TCM processes in one line
Pickling Optimizer Automated model-based setup calculation for efficient strip pickling
PropertyMon Inline measurement of steel strip properties
EdgeMon Inspection of side-trimmed strip edge surface for steel pickling and processing lines and aluminum rolling
i Box Pickling Tank Advanced solution for efficient descailing
High-capacity tension scale breaker Tension leveler-type scale breaker for high descaling performance
Flying Width Changing (FWC) side trimmer Innovative solution for efficient and accurate side trimming

Reference Story: Continuous Pickling Line Renewal - iBox

Customer
Kobe Steel, Ltd., Japan

Type of Line
Continuous Pickling Line (CPL)

Technical Data
Annual capacity: 2,000,000 tons 
Strip thickness: 1.8 -6 mm
Strip width: 600 -1650 mm
Processing speed: 240 m/min

Our solutions
An i Box superior in chemical resistance and in retaining heat replaced the existing shallow tank.
The iBox has immersion boxes inside through which strips travel guided by rolls and skids. This pickling process uses the strong shear flow generated by the narrow and rectangular channel the immersion boxes form to accelerate the acid-liquid reaction without an electric pump required to circulate the acid solution in conventional jet pickling tanks.

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