WebJul 1, 2008 · Proper Draw Ratio Heads Off Problems. An important design parameter in cup drawing is the draw ratio (D/d), the ratio of blank diameter (D) to punch diameter (d). Fig. 2 shows that the punch diameter equals … WebSep 5, 2024 · Even if the draw ratio is acceptable, a small amount of stretch likely will occur when the metal is impacted by the draw punch radius and the die entry radius. The metal thins because it cannot react …
Draw ratio, polymer processing - Big Chemical Encyclopedia
WebDraw Ratio. When designing a part to be thermoformed, draw ratio, or the proportion of depth to the width of the part, is one of the most important considerations. The depth of … WebOct 19, 2015 · Draw down ratio (DDR) and draw ratio balance (DRB) calculation need to be made to insure that correct product sizes are produced. These calculations are available in standard extrusion texts. Without performing calculations for tip and dies sizes, based on the final product dimensions and the consideration for the polymer being processed, and ... ウエストクリニック
Ferroelectricity and piezoelectricity of nylon 11 films with different ...
WebThis natural draw ratio then represents a good target draw ratio for preform/ bottle design or for specifying draw ratios for film. If PET film is extended into the strain … WebMay 17, 2016 · The melt-spun tapes were drawn to four different draw ratios (λ), of 6.2 ± 0.3, 10.0 ± 0.6, 13 ± 1 and 14 ± 1, through a hot air oven, at a drawing temperature of 170 °C in a continuous process. 2.2. Hot compaction. All the hot compacted samples produced in this study were unidirectional samples (55 mm × 55 mm and 0.5 mm thick), i.e. the ... WebThe draw rate is controlled to balance the physical properties with the transverse properties achieved by the blow draw ratio. The tube may be wound as such or may be sHt and … pagri china