CONCRETE INDUSTRY AND ABRASIVE WEAR. The concrete industry.

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Presentation transcript:

CONCRETE INDUSTRY AND ABRASIVE WEAR

The concrete industry

ABRASIVE WEAR MECHANISMS Two body abrasion Three body abrasion

PIN ON DISC WEAR MACHINE Hardness, HV Quenched & temperered Weigth loss, mg Rst52.3 Dx460MC Dx550MC Dx600MC Dx650MC

PADDEL WEAR MACHINE Weigth loss, mg Rst52.3 Dx460MC Dx550MC Dx690MC Dx650MC Quenched & Tempered Hardness, HV

CONCRETE TRANSPORT IN PIPE

CONCRETE MOVEMENT IN DRUM

ACTIVE LAYER AND HARDNESS

Perlitic steels Martensitic steels Bainitic steels (Austempered) Austenitic steels Vickers hardness (HV) Relative Wear Resistance (pure iron = 1) Increasing Alloy Content Cold Work Increasing C-content Effect of Microstructure and Composition on Wear

Wear during gravel transport Q & T 150 HV 250 HV 290 HV400 HV Loss of volumen Rst52.3Dx700

WeldHAZ 0.2 mm Formability Weldability OTHER IMPORTANT PROPERTIES