Abstract
Contribution presents results of study of tribological characteristics of Fe-Zn coated steel sheets. Experimental research was done using coatings with different alloying – under alloyed, optimal and slightly pre alloyed. The optimally alloyed coatings and the slightly prealloyed ones were annealed in order to reach different alloying level. Alloying level was evaluated by phase composition and % Fe in coating. Tribological properties such as surface microgeometry, abrasion, friction coefficient were analysed from the view of formability. Experimental results of strip drawn test were used for verification of strip-drawn test numerical simulation. Based on numerical simulation results, contact pressure on drawing die radius was observed.
Highlights
Current production in the automotive, consumer goods industry and other industries must adapt to many; often mutually conflicting technical, economic and environmental requirements
For more than 80% of structural elements of the ULSAB body the builders have used high-strength steels with yield strength from 210 to 550 MPa, ultra-high strength steels with yield strength above 550 MPa, almost half of the weight of the body consists of laser-welded tailored blanks and sandwich materials [1,2]
In order to ensure the adequate lifetime of autobodies, majority of structural elements of ULSAB body are made of zinc coated sheets
Summary
Current production in the automotive, consumer goods industry and other industries must adapt to many; often mutually conflicting technical, economic and environmental requirements. According to [5] friction coefficients for zinc coated materials are higher to compare with uncoated sheets.
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