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American
Iron and Steel
Institute
Forming
Edge Cracking
There can be edge cracking in AHSS forming without significant edge strain.
Click a topic below to see a list of training resource links:
- Optimum trim steel clearance for best cut edge quality to prevent edge splitting during forming.
- Understanding of trim clearance effect on edge cut quality because edge cut quality has large impact on edge fractures when using AHSS.
- Understanding of Local Formability versus global formability parameters, and the impact on possible edge fracture mechanisms.
- How does a steel’s microstructure affect edge stretchability?
- Die designs to reduce edge fractures
Optimum trim steel clearance for best cut edge quality to prevent edge splitting during forming.
| Mode | Training Links |
|---|---|
| Self -Study | Optimal tooling approaches for punching AHSS (thefabricator.com) |
| Self-Study | Cutting and Punching Advanced High-Strength Steels | MetalForming Magazine Article |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Understanding of trim clearance effect on edge cut quality because edge cut quality has large impact on edge fractures when using AHSS.
| Mode | Training Links |
|---|---|
| Self -Study | Trimming and Edge Stretchability |
| Self -Study | Prediction and Prevention of Edge Cracking in AHSS |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Understanding of Local Formability versus global formability parameters, and the impact on possible edge fracture mechanisms.
| Mode | Training Links |
|---|---|
| Self -Study | New Mechanisms Governing Local Formability In 3rd Generation AHSS (sae.org) |
| Self -Study | Local Formability of Different Advanced High Strength Steels (aalto.fi) |
| Self -Study | The importance of local formability when working with AHSS (thefabricator.com) |
| Self -Study | Local Formability Archives – AHSS Guidelines (ahssinsights.org) |
| Class for Hire | |
| Institute/Association |
How does a steel’s microstructure affect edge stretchability?
| Mode | Training Links |
|---|---|
| Self -Study | edge stretchability Archives – AHSS Guidelines (ahssinsights.org) |
| Self -Study | Enhanced Sheared Edge Stretchability of AHSS/UHSS (energy.gov) |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Die designs to reduce edge fractures
| Mode | Training Links |
|---|---|
| Self -Study | die development Archives – AHSS Guidelines (ahssinsights.org) |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Drawing AHSS
Wrinkles, thinning & splits occurring where not predicted (Global Formability)
Click a topic below to see a list of training resource links:
- What are the limits to drawing AHSS?
- Can I reform/redraw AHSS?
- How to optimize draw beads to attain desirable material flow
- How to use the FLD to understand global formability for AHSS.
- Compression cracking can occur when forming AHSS.
- What effect does a different chemistry and microstructure have on drawing?
- Understanding Local vs Global Formability
What are the limits to drawing AHSS?
| Mode | Training Links |
|---|---|
| Self -Study | Microsoft Word – Section 1_Introduction_20170430.docx (worldautosteel.org) |
| Self -Study | deep drawing Archives – AHSS Guidelines (ahssinsights.org) |
| Self-Study | Stamping & Formability – Auto/Steel Partnership (a-sp.org) |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Can I reform/redraw AHSS?
| Mode | Training Links |
|---|---|
| Self -Study | Advanced High-Strength Steel Stamping (energy.gov) |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |
How to optimize draw beads to attain desirable material flow
| Mode | Training Links |
|---|---|
| Self -Study | |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |
How to use the FLD to understand global formability for AHSS.
| Mode | Training Links |
|---|---|
| Self -Study | Global vs Local Formability – AHSS Guidelines (ahssinsights.org) |
| Self -Study | Forming Limit Diagram – an overview | ScienceDirect Topics |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Compression cracking can occur when forming AHSS.
| Mode | Training Links |
|---|---|
| Self -Study | 5595106_Omslag.indd (diva-portal.org) |
| Self -Study | Edge crack test methods for AHSS steel grades: A review and comparisons – ScienceDirect |
| Class for Hire | |
| Institute/Association | |
| Consultant |
What effect does a different chemistry and microstructure have on drawing?
| Mode | Training Links |
|---|---|
| Self -Study | microstructure Archives – AHSS Guidelines (ahssinsights.org) |
| Self -Study | Evaluation of Microstructural and Mechanical Behavior of AHSS CP780 Steel Welded by GMAW-Pulsed and GMAW-Pulsed-Brazing Processes (mdpi.com) |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Understanding Local vs Global Formability
| Mode | Training Links |
|---|---|
| Self -Study | Global vs Local Formability – AHSS Guidelines (ahssinsights.org) |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Press for AHSS
Tooling design and selection of parameters need to be considered for AHSS forming and trimming to avoid damage to equipment.
Click a topic below to see a list of training resource links:
- When to consider servo press or hydraulic press
- What trim approach shear angle should I use to avoid snap through on punched holes?
- How to avoid damage by selection of welded material compatible with cast die materials for cutting/trimming edges in AHSS dies.
- How to optimize tool part processing design.
When to consider servo press or hydraulic press
| Mode | Training Links |
|---|---|
| Self-Study | Press Requirements – AHSS Guidelines (ahssinsights.org) |
| Self -Study | 5 considerations when replacing a hydraulic press with a servo press (thefabricator.com) |
| Self -Study | Servo Press vs Hydraulic Press |
| Class for Hire | |
| Institute/Association | |
| Consultant |
What trim approach shear angle should I use to avoid snap through on punched holes?
| Mode | Training Links |
|---|---|
| Self -Study | Cutting, Blanking, Shearing & Trimming – AHSS Guidelines (ahssinsights.org) |
| Class for Hire | |
| Institute/Association | |
| Consultant |
How to avoid damage by selection of welded material compatible with cast die materials for cutting/trimming edges in AHSS dies.
| Mode | Training Links |
|---|---|
| Self -Study | Die materials and wear in stamping AHSS (thefabricator.com) |
| Class for Hire | |
| Institute/Association | |
| Consultant |
How to optimize tool part processing design.
| Mode | Training Links |
|---|---|
| Self -Study | tool design Archives – AHSS Guidelines (ahssinsights.org) |
| Self-Study | AHSS simulations for automotive design – Docol – SSAB |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Springback with AHSS
Stamping AHSS leads to increased spring back.
Click a topic below to see a list of training resource links:
- Die design practices to counter springback tendency.
- The options for Part geometry designs to counter springback.
- Understanding and use of tension developing stake beads or hybrid beads to address excessive springback in a die design for AHSS?
- Understanding the need for increased press and binder forces that are required when stamping AHSS.
- Product geometry design and tooling part processing should be developed using practices that help reduce and control spring back.
- Methods to predict springback or twist in a part/die design
Die design practices to counter springback tendency.
| Mode | Training Links |
|---|---|
| Self -Study | Correcting Springback (ahssinsights.org)/ |
| Self -Study | Springback – AHSS Guidelines (ahssinsights.org) |
| Class for Hire | |
| Institute/Association | |
| Consultant |
The options for Part geometry designs to counter springback.
| Mode | Training Links |
|---|---|
| Self -Study | R&D Update: Springback in stamping, Part I (thefabricator.com) |
| Self -Study | R&D Update: Springback in stamping, Part II (thefabricator.com) |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Understanding and use of tension developing stake beads or hybrid beads to address excessive springback in a die design for AHSS?
| Mode | Training Links |
|---|---|
| Self -Study | Correcting Springback – AHSS Guidelines (ahssinsights.org) |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Understanding the need for increased press and binder forces that are required when stamping AHSS.
| Mode | Training Links |
|---|---|
| Self -Study | Bending Basics: The hows and whys of springback and springforward (thefabricator.com) |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Product geometry design and tooling part processing should be developed using practices that help reduce and control spring back.
| Mode | Training Links |
|---|---|
| Self -Study | Industry 4.0 and AHSS Applications – AHSS Guidelines (ahssinsights.org) |
| Self -Study | Forming and Formability of AHSS – AHSS Guidelines (ahssinsights.org) |
| Class for Hire | |
| Institute/Association | |
| Consultant |
Methods to predict springback or twist in a part/die design.
| Mode | Training Links |
|---|---|
| Self -Study | R&D Update: Springback in stamping, Part I (thefabricator.com) |
| Self -Study | |
| Class for Hire | |
| Institute/Association | |
| Consultant |