Piercing mill model setup 2.3-3 Example of results from piercing process simulation 2.3-4 Assel elongating model setup 2.3-5 Reducing mill model setup 2.3-6 Stretch-reducing mill setup 2.3-7 Induction heating model application 2.3-8 Induction heating model predictability 2.3-9 Steel grade database 2.3-10 Flow stress database GUI 33 2.3-11 Recrystallization and grain growth GUI 2.3-12 Production scheduling GUI 35 2.3-13 Tooling design GUI 35 2.3-14 Optimization GUI 2.3-15 a Thermal history and microstructure evolution of seamless tubing during a conventional hot rolling process 2.3-15 b Thermal history and microstructure evolution of seamless tube during a cooling process 37 2.3-16 FE models of piecing, Assel elongating and planetary elongating process 2.3-17 Typical Mannesmann piercing mill 2.3-18 Analysis results of piercing process 2.3-19 Typical system of Assel elongating mill 2.3-20 FE model of Assel elongating process 2.3-21 Deformation of tube along the elongating mill 2.3-22 Cross-sections along the forming axis at different locations 2.3-23 a Contour of strain rate 2.3-23 b Profile of forming load 2.3-24 FE model of planetary elongating process 2.3-25 Schematic of radial forming process 2.3-26 FE model of radial forging process 2.3-27 a Strain distribution in the billet 2.3-27 b Temperature distribution in the billet 2.3-28 FE models of straightening and Assel elongating processes 2.3-29 Typical two-roll straightening mill 2.3-30 Typical five-roll straightening mill 2.3-31 FE model of two-roll straightening process 2.3-32 FE model of five-roll straightening process 2.3-33 Contact loads from two-roll straightening 2.3-34 Contact loads from five-roll straightening 2.3-35 Illustration of dual-meshing technique 2.3-36 FE model of reducing mill 2.3-37 a Analysis results of reduced tube-Contour of temperatures 2.3-37 b Analysis results of reduced tube-Contour of residual stresses 2.3-38 Comparison of wall variation due to different reduction pass design 2.3-39 Typical set up of reducing and stretch reducing mills 2.3-40 Analysis results of 18-station stretch reducing mill 2.3-41 Comparison of analysis and actual geometries after Station No. 18 2.3-42 Representation of machining modeling xiii List of Figures (continued) 2.4-1 Plant rapid cooling device 2.5-1 Comparison of laboratory quench profiles at different tube locations to thermal profiles applied in Gleeble dilatometry investigations for the AFC process 2.5-2 Dilation versus temperature curves for two AFC simulations and one full quench (to identify the martensite transformation temperature) 2.5-3 Dilation versus time for the AFC simulations shown in Figure 2.5-2 2.5-4 a Uniform microstructure produced by 10-hour T-ESA cycle 2.5-4 b Uniform microstructure produced by 16-hour T-ESA cycle 2.5-5 D-ESA microstructure 2.5-6 Tube making physical simulation of the NEQ process using the Gleeble torsion thermo-mechanical process simulator 2.5-7 Torque versus torsion (similar to stress versus strain) curves for tube making physical simulation of the NEQ process usi...
managed by UT-Battelle, LLC for the U.S. Department of Energy Under contract DE-ACO5-OoOR22725 PROTECTED CRADA INFORMATION This product contains Protected CRADA Information which was produced on April 24, 2002 under CRADA No. ORNL 99-0549 and is not to be further disclosed for a period of five (5) years from the date it was produced except as expressly provided for in the CRADA.
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