Änderung der Oberflächentopographie beim Bandverzinken

ELOTOP – Influences of the electro-galvanizing process on the surface topography alterations

Situation:

  • The roughness of zinc coated steel flat products is a very important regarding the deep drawing properties and the paintability.
  • The roughness of electro-galvanized strips is set up by a skin pass rolling process of the substrate.
  • In few cases, the substrate topography is changed by electro-galvanizing more than expected. These cases need extra effort.

Solution:

  • Laboratory and in-plant trials to study the influences of the electro-galvanizing process on the surface topography
  • Focusing on topography and steel grade of the primary material, process configuration and parameters, as well as composition of the electrolyte
  • Developing of rules and models to predict the final roughness of the steel strip

Operational benefit:

  • Identification of different parameters with measurable effect on roughness alteration
  • Reasonably good description of roughness alteration by a multiple linear regression model

Broad knowledge base to increase process reliability

Recommendation

H2BF – CO2-Mitigation through Injection of H2 into the Blast Furnace – Project Phase 1

This project is funded from the State of NRW and aims to technically investigate a new, modified blast furnace process. […]

NickelRück – Recovery of nickel from process waters of phosphating

Initial situation: Processes and waste water containing nickel are produced during the phosphating of steels Seizure of phosphating sludge after […]

INSPIREWATER – Innovative Solutions in the Process Industry for next generation Resource Efficient Water management

Initial situation Process related intake of scale, formation of hardness and salting (rolling mill cooling water) or metals in pickling […]

Rensodyn – Knowledge-based process management for better energy utilization

Initial situation: Alternating feedstocks at sintering plant and blast furnace Adaptations of the process management to changing boundary conditions necessary […]