Din 6935 Standard Pdf -
The Role of DIN 6935 in Precision Engineering The DIN 6935 standard is a critical technical framework that governs the cold bending of flat rolled steel products within the mechanical engineering and steel construction industries. Its primary function is to provide standardized methods for calculating "developed lengths" (the flat state of a part before it is bent) while ensuring structural integrity by specifying minimum bending radii. Core Technical Specifications
The standard provides engineers and manufacturers with precise guidelines to account for the physical changes steel undergoes during the bending process.
Minimum Bending Radii: To prevent material failure, such as cracking or excessive thinning, DIN 6935 defines permissible radii based on material thickness ( Din 6935 Standard Pdf
) and the specific grade of steel. For example, the radius must often be increased for bending angles exceeding 120∘120 raised to the composed with power to maintain material health.
Developed Length Calculation: When a flat sheet is bent, the outer surface stretches while the inner surface compresses. DIN 6935 introduces "compensating values" ( The Role of DIN 6935 in Precision Engineering
) and correction factors to accurately calculate the flat length required to achieve a finished bent component.
Material Thinning: The standard acknowledges that the thickness of the material decreases by approximately 20% in the rounded portion of the bend. Evolutionary Context Quality Assurance: Ensures that bent parts fit into
The current version of the standard is DIN 6935:2011-10, which replaced the 2010 edition and the much older 1975 and 1969 versions. While older versions like the 1969 edition are now considered inactive, they established the foundational tables for
factors that remain influential in legacy manufacturing workflows. Industrial Application DIN 6935: Cold Bending Steel Standards | PDF - Scribd
3. Technical Content and Methodology
Why is DIN 6935 Critical?
- Quality Assurance: Ensures that bent parts fit into assemblies without rework.
- Legal Certainty: In contractual disputes, citing the standard provides a neutral technical baseline.
- Process Optimization: Helps toolmakers and press brake operators set repeatable parameters.