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Manufacture of Wear Plates – Critical Issues and Solutions

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What are the critical issues in wear plate manufacturing? In this article we delve into the intricacies of wear plates manufacturing, offering insights and our solution: the induction hardening wear plate concept.

Manufacture of wear plates for rolling mills: critical issues and solutions

Wear plates are used to protect the inner surfaces of rolling mills from erosion, abrasion and impact. They act as a shield, preventing direct contact between the mill components and the raw materials being processed.

At Lorenzon we design and manufacture all types of liners and wear plates for rolling mills. Each plate has a different use and is therefore mounted in a different part of the plant:

  • On the rolling cage(housing liners)
  • On the work roll chock liners and back up chock liners
  • On the lower part of the rolling cage(bed plates, stack plates, rocker plates, etc.)

Critical Issues

Liners, or wear plates, are a fundamental part of the rolling plant. They must:

  • Withstand the enormous pressures exerted by the rolling roller
  • Absorb the enormous vibrations generated during plant operation
  • Possess excellent resistance to wear, corrosion, and friction

Wear, corrosion, and erosion can in fact alter the dimensions of the plate, causing errors and inaccuracies in the lamination process, and permanently altering the thickness and final quality of the laminated product.

Solution

At Lorenzon we have developed the concept of Wear Plate with Induction Hardening, which allows us to obtain a product with a dual hardness. In particular, we use induction hardening, with variable hardening depths of up to 5mm, to create a dual-layer product:

  • The upper layer, which is hardened, ensures excellent wear resistance, extending the plate’s lifespan and minimizing potential dimensional variations.
  • The lower layer, which is not hardened, is soft enough to absorb impacts, slips, and vibrations generated during operation.

Liners can also be made using other materials and special treatments according to the customer’s specific requirements. We are available any time to assess the best solution directly with the customer and formulate the appropriate production cycle for your requirements.

In the following articles, we will analyse in more detail how the post-hardening straightening phase and the welding of micro-cracks and burns significantly affect the final quality of liners and are therefore two fundamental steps in the production process of wear parts for rolling mills.

Visit our liners and wear plates page and discover our solutions for rolling mills. Fill in the form with your message or problem to be solved, we will be happy to help you.

Good Work!