INCREASING STAMPING FORMABILITY OF LOW-CARBON COLD ROLLED THIN STEEL SHEETS

Abstract

The use of surfactant (épila) was studied as a method for improving the cold-formability of steel sheets. The factors of the resulting effect were analyzed. Application of épila significantly reduces the surface roughness and decreases the stress concentrates. Epilam fills pores and microcracks, displaces moisture and gases, thereby reducing metal embrittlement. The application of épila pro-vides the highest category of drawing the low carbon sheet steel 08kp.

Keywords

• epilam
• defects healing
• cold rolled sheet
• stamping of sheets
• stamping formability
• drawing
• hole-expansion test
• drawability
• roughness
• surface profile