Glossary
1 MIN READ
Yield Strength
The specific stress threshold at which a metal permanently deforms, transitioning from temporary elastic behavior to permanent plastic deformation.
Technical FAQ
Dealing with high-yield structural steels can cause unexpected spring-back, leading to inconsistent part dimensions and slowed production lines. Yield strength is the specific stress threshold where a metal permanently deforms, meaning higher yield materials require significantly more bending power from the rolls to transition from elastic to plastic deformation. Recognizing your material's specific yield properties allows you to correctly gauge machine capacity, preventing equipment overload while ensuring accurate dimensional results. The Davi iRoll control system features a comprehensive material library that automatically factors in yield strength to calculate exact bending programs.
Engineering teams working with advanced alloys must carefully manage forces to avoid cracking or fracturing high-strength materials during tight-radius forming. Ultimate tensile strength is the maximum amount of tensile stress a material can withstand before structural failure or complete breaking occurs. Knowing the UTS ensures that multi-pass programs are correctly calibrated to form the material progressively without exceeding its mechanical boundaries, protecting both the workpiece and the machine components. Davi’s technical division utilizes advanced Finite Element Method (FEM) studies to evaluate material behavior against machine capabilities before production begins.
Inaccurate radius tracking due to material elasticity leads to continuous trial-and-error adjustments, resulting in costly scrap and slow assembly lines. Spring-back is the natural tendency of a metal plate or profile to partially return toward its original flat shape after the forming force is released, caused by elastic recovery. Accurate spring-back prediction allows the control system to over-bend the plate precisely, achieving the exact target radius on the first attempt without wasting time or material. Davi offers dedicated Spring-Back Software that analyzes material properties to eliminate manual guesswork and minimize test scrap.
Raw material yield variations between different steel suppliers or batches can disrupt automated CNC accuracy. The self-learning system monitors actual machine reactions during the initial bending phase and automatically adjusts the CNC program parameters based on the material's real-world behavior. It eliminates manual calculation adjustments, speeds up automated production, and ensures consistent quality from the very first sheet. This advanced AI feature is integrated directly into the Davi iRoll eXtreme control system architecture.