Hot Stamping of Ultra High-Strength Steels : From a Technological and Business Perspective.

By: Billur, ErenMaterial type: TextTextSeries: eBooks on DemandPublisher: Cham : Springer International Publishing AG, 2018Copyright date: ©2019Description: 1 online resource (251 pages)Content type: text Media type: computer Carrier type: online resourceISBN: 9783319988702Subject(s): Steel, High strength | Automobile industry and tradeGenre/Form: Electronic books.Additional physical formats: Print version:: Hot Stamping of Ultra High-Strength Steels : From a Technological and Business PerspectiveDDC classification: 629.232 LOC classification: TA1-2040Online resources: Click here to view this ebook.
Contents:
Intro -- Foreword -- Acknowledgements -- Contents -- Contributors -- Acronyms -- 1 Introduction -- 1.1 Material Requirements in a Car Body -- 1.2 Steels in Automotive Industry -- 1.2.1 Mild Steels -- 1.2.2 Conventional High-Strength Steels -- 1.2.3 Advanced High-Strength Steels: The First Generation -- 1.2.4 Second-Generation AHSS -- 1.2.5 Third-Generation AHSS -- 1.3 Hot Stamping -- References -- 2 Metallurgy of Steels -- 2.1 Phases of Steels and Their Properties -- 2.2 The Effect of Alloying Elements -- 2.3 Phase Transformations -- References -- 3 History and Future Outlook of Hot Stamping -- 3.1 Early Developments: 1973-1990 -- 3.2 Further Developments 1990s -- 3.3 Coated Blanks and Increased Usage: 2000s -- 3.4 Further Uses of Hot Stamping: 2010s -- 3.5 Summary of the 40Years -- References -- 4 Blank Materials -- 4.1 22MnB5 -- 4.2 Higher Strength Steels (>1700MPa) -- 4.3 Higher Elongation/Energy Absorbing Materials -- 4.4 Other Steels for Hot Stamping -- 4.4.1 Stainless Steels -- 4.4.2 Medium-Mn Steels -- 4.4.3 Steel Composites -- 4.5 Coatings -- 4.5.1 Aluminum-Based Coatings -- 4.5.2 Zinc-Based Coatings -- 4.5.3 Varnish Coatings -- References -- 5 A Hot Stamping Line -- 5.1 Furnaces and Heating Systems -- 5.1.1 Conventional Roller Hearth Furnaces -- 5.1.2 Roller Hearth Furnaces with Tray -- 5.1.3 Multi-chamber Furnaces -- 5.1.4 Other Heating System Designs -- 5.1.5 Heating Time Reduction -- 5.2 Material Handling Systems -- 5.3 Hot Stamping Presses -- 5.3.1 Direct Drive Hydraulic Press -- 5.3.2 Accumulator Drive Hydraulic Press -- 5.3.3 Multi-cylinder Hydraulic Press -- 5.3.4 Flywheel Hydraulic Press -- 5.3.5 Servo-Mechanical Press -- 5.4 Hot Stamping Lines by Capacity -- References -- 6 Die Design and Manufacturing -- 6.1 Quenching Requirements -- 6.2 Designing and Manufacturing Dies with Cooling Channels -- 6.2.1 Drilled Cooling Channels.
6.2.2 Shell and Core Design -- 6.2.3 Cast-in Cooling Channels -- 6.3 Die Materials and Treatments -- 6.3.1 Treatments/Coatings for Tool Materials -- 6.4 Novel Quenching Methods -- 6.5 Hydrogen-Induced Delayed Fracture -- References -- 7 Post-Forming Operations -- 7.1 Typical Process Chain -- 7.2 Trimming and Piercing -- 7.2.1 Hard Cutting -- 7.2.2 Laser Cutting -- 7.2.3 Alternative Cutting Methods -- 7.3 Surface Conditioning -- 7.4 Quality Control -- 7.4.1 Blanking Quality -- 7.4.2 Preforming Quality -- 7.4.3 Hot-Forming Quality -- 7.5 Welding and Assembly -- 7.5.1 Resistance Spot Welding -- 7.5.2 Arc Welding -- 7.5.3 Other Joining Methods -- References -- 8 Tailored Properties -- 8.1 The Need for Tailored Parts -- 8.2 Tailored Blanks -- 8.2.1 Tailor Welded Blanks -- 8.2.2 Tailor Rolled Blanks -- 8.2.3 Patchwork Blanks -- 8.3 Tailoring Final Properties -- 8.3.1 Tailored Heating (Pre Process) -- 8.3.2 Tailored Cooling (In-Die Process) -- 8.3.3 Post Process Annealing -- 8.4 Uses of Tailored Properties -- 8.4.1 Tailored Properties for Improved Energy Absorption -- 8.4.2 Reduction of Metallurgical Notch Sensitivity -- 8.4.3 Tailored Properties to Facilitate Trimming and Piercing -- References -- 9 Hot Tube Forming -- 9.1 3DQ -- 9.2 Hot Tube Forming -- 9.3 Hot Tube Hydroforming -- References -- 10 Computer Modeling of Hot Stamping -- 10.1 FE Modeling of Hot Stamping Process -- 10.2 Inputs to Simulation -- 10.2.1 Properties of the Blank -- 10.2.2 Properties of the Tools -- 10.2.3 Friction -- 10.2.4 Thermal Contact Conductance -- 10.3 Stages of a Simulation -- 10.3.1 Gravity -- 10.3.2 Holding -- 10.3.3 Forming -- 10.3.4 Quenching -- 10.3.5 Air Quenching -- 10.3.6 Distortion -- 10.4 Case Studies -- 10.4.1 Numisheet 2008 B-pillar -- 10.4.2 Cyclic Cooling in a Tailored Part -- 10.5 Recent Improvements in Simulation Technology -- References.
11 Economics of Hot Stamping -- 11.1 The Hot Stamping Industry -- 11.1.1 Steel Makers and Service Centers -- 11.1.2 Equipment Suppliers -- 11.2 Hot Stamping Lines -- 11.2.1 Tier Suppliers -- 11.2.2 Vehicle Manufacturers (OEM's) -- 11.3 Feasibility of Hot Stamping -- 11.4 Future Outlook on Hot Stamping Business -- 11.4.1 Automotive Industry -- 11.4.2 Defense Industry -- References.
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Intro -- Foreword -- Acknowledgements -- Contents -- Contributors -- Acronyms -- 1 Introduction -- 1.1 Material Requirements in a Car Body -- 1.2 Steels in Automotive Industry -- 1.2.1 Mild Steels -- 1.2.2 Conventional High-Strength Steels -- 1.2.3 Advanced High-Strength Steels: The First Generation -- 1.2.4 Second-Generation AHSS -- 1.2.5 Third-Generation AHSS -- 1.3 Hot Stamping -- References -- 2 Metallurgy of Steels -- 2.1 Phases of Steels and Their Properties -- 2.2 The Effect of Alloying Elements -- 2.3 Phase Transformations -- References -- 3 History and Future Outlook of Hot Stamping -- 3.1 Early Developments: 1973-1990 -- 3.2 Further Developments 1990s -- 3.3 Coated Blanks and Increased Usage: 2000s -- 3.4 Further Uses of Hot Stamping: 2010s -- 3.5 Summary of the 40Years -- References -- 4 Blank Materials -- 4.1 22MnB5 -- 4.2 Higher Strength Steels (>1700MPa) -- 4.3 Higher Elongation/Energy Absorbing Materials -- 4.4 Other Steels for Hot Stamping -- 4.4.1 Stainless Steels -- 4.4.2 Medium-Mn Steels -- 4.4.3 Steel Composites -- 4.5 Coatings -- 4.5.1 Aluminum-Based Coatings -- 4.5.2 Zinc-Based Coatings -- 4.5.3 Varnish Coatings -- References -- 5 A Hot Stamping Line -- 5.1 Furnaces and Heating Systems -- 5.1.1 Conventional Roller Hearth Furnaces -- 5.1.2 Roller Hearth Furnaces with Tray -- 5.1.3 Multi-chamber Furnaces -- 5.1.4 Other Heating System Designs -- 5.1.5 Heating Time Reduction -- 5.2 Material Handling Systems -- 5.3 Hot Stamping Presses -- 5.3.1 Direct Drive Hydraulic Press -- 5.3.2 Accumulator Drive Hydraulic Press -- 5.3.3 Multi-cylinder Hydraulic Press -- 5.3.4 Flywheel Hydraulic Press -- 5.3.5 Servo-Mechanical Press -- 5.4 Hot Stamping Lines by Capacity -- References -- 6 Die Design and Manufacturing -- 6.1 Quenching Requirements -- 6.2 Designing and Manufacturing Dies with Cooling Channels -- 6.2.1 Drilled Cooling Channels.

6.2.2 Shell and Core Design -- 6.2.3 Cast-in Cooling Channels -- 6.3 Die Materials and Treatments -- 6.3.1 Treatments/Coatings for Tool Materials -- 6.4 Novel Quenching Methods -- 6.5 Hydrogen-Induced Delayed Fracture -- References -- 7 Post-Forming Operations -- 7.1 Typical Process Chain -- 7.2 Trimming and Piercing -- 7.2.1 Hard Cutting -- 7.2.2 Laser Cutting -- 7.2.3 Alternative Cutting Methods -- 7.3 Surface Conditioning -- 7.4 Quality Control -- 7.4.1 Blanking Quality -- 7.4.2 Preforming Quality -- 7.4.3 Hot-Forming Quality -- 7.5 Welding and Assembly -- 7.5.1 Resistance Spot Welding -- 7.5.2 Arc Welding -- 7.5.3 Other Joining Methods -- References -- 8 Tailored Properties -- 8.1 The Need for Tailored Parts -- 8.2 Tailored Blanks -- 8.2.1 Tailor Welded Blanks -- 8.2.2 Tailor Rolled Blanks -- 8.2.3 Patchwork Blanks -- 8.3 Tailoring Final Properties -- 8.3.1 Tailored Heating (Pre Process) -- 8.3.2 Tailored Cooling (In-Die Process) -- 8.3.3 Post Process Annealing -- 8.4 Uses of Tailored Properties -- 8.4.1 Tailored Properties for Improved Energy Absorption -- 8.4.2 Reduction of Metallurgical Notch Sensitivity -- 8.4.3 Tailored Properties to Facilitate Trimming and Piercing -- References -- 9 Hot Tube Forming -- 9.1 3DQ -- 9.2 Hot Tube Forming -- 9.3 Hot Tube Hydroforming -- References -- 10 Computer Modeling of Hot Stamping -- 10.1 FE Modeling of Hot Stamping Process -- 10.2 Inputs to Simulation -- 10.2.1 Properties of the Blank -- 10.2.2 Properties of the Tools -- 10.2.3 Friction -- 10.2.4 Thermal Contact Conductance -- 10.3 Stages of a Simulation -- 10.3.1 Gravity -- 10.3.2 Holding -- 10.3.3 Forming -- 10.3.4 Quenching -- 10.3.5 Air Quenching -- 10.3.6 Distortion -- 10.4 Case Studies -- 10.4.1 Numisheet 2008 B-pillar -- 10.4.2 Cyclic Cooling in a Tailored Part -- 10.5 Recent Improvements in Simulation Technology -- References.

11 Economics of Hot Stamping -- 11.1 The Hot Stamping Industry -- 11.1.1 Steel Makers and Service Centers -- 11.1.2 Equipment Suppliers -- 11.2 Hot Stamping Lines -- 11.2.1 Tier Suppliers -- 11.2.2 Vehicle Manufacturers (OEM's) -- 11.3 Feasibility of Hot Stamping -- 11.4 Future Outlook on Hot Stamping Business -- 11.4.1 Automotive Industry -- 11.4.2 Defense Industry -- References.

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