Effect of Mandrel on Cross-Section Quality in Numerical Control Bending Process of Stainless Steel 2169 Small Diameter Tube

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td align="left">Tube diameter <i>D</i> (mm)</td><td align="center">Tube wall thickness <i>t</i> (mm)</td><td align="center">Bending radius <i>R</i> (mm)</td><td align="center">Bending angle <i>θ</i> (deg)</td><td align="center">Bending angular velocity <i>ω</i> (rad/s)</td><td align="center">Clearance between tube and dies <svg height="11.75" id="M22" style="vertical-align:-0.23206pt" version="1.1" viewbox="0 0 23 11.75" width="23" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.4)"><path d="M600 0h-557v24l268 633l28 8l261 -641v-24zM497 50l-194 489l-196 -489h390z" id="x394"></path></g><g transform="matrix(.017,-0,0,-.017,10.959,11.4)"><path d="M682 629q-1 -16 -1.5 -72t-2.5 -86l-31 -4q-5 92 -51 129t-139 37q-100 0 -177 -49t-116 -125t-39 -162q0 -122 66 -201t182 -79q83 0 137 42.5t112 128.5l26 -15q-12 -31 -42.5 -88t-45.5 -75q-139 -27 -199 -27q-148 0 -243 81.5t-95 226.5q0 173 129.5 274.5
t325.5 101.5q114 0 204 -38z" id="x1D436"></path></g>
</svg> (mm)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td align="left">6.35</td><td align="center">0.41</td><td align="center">19.05</td><td align="center">180</td><td align="center">0.4</td><td align="center">0.1</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Advances in Materials Science and Engineering

tab3

Table 3

Table 3: Effect of Mandrel on Cross-Section Quality in Numerical Control Bending Process of Stainless Steel 2169 Small Diameter Tube 