Mandrels TRIZ Cases
- Mandrel Bar Cooling Zone for Uniform Seamless Tube Piercing
A mandrel bar cooling zone with coolant damming limits rear-end overcooling, improving longitudinal temperature uniformity in seamless tube piercing.
- Mandrel Guide Slides With Locking Adjustment for Diameter Changes
Adjustable guide slides lock to fit different mandrel or driving bar diameters, cutting wear, tooling time, and maintenance in rolling mills.
- Mandrel Guide Slides for Multi-Diameter Rolling Bar Support
Adjustable guide slides lock at preset positions to support mandrels and driving bars of different diameters with less wear and downtime.
- Mandrel Bar Inner-Surface Cooling for Uniform Seamless Pipe Temperature
Localized mandrel bar cooling and coolant damming keep hollow shell inner-surface temperature uniform during seamless pipe rolling.
- Piercer Plug Hardness Gradient to Resist Deformation and Cracking
Differential heat treatment hardens the piercer plug tip while keeping the trunk tough, reducing deformation, cracking, and coating peeling.
- Tapered Round Billet Geometry for Piercing Plug Protection
A tapered hole at the billet end spreads piercing stress in the Mannesmann process, reducing plug damage and inner tube surface flaws.