Gating & Riser Design 101

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Learning Outcomes

  • Identify how quality requirements for a casting impact gating and risers.
  • Describe the function of risers.
  • Identify the effects of different alloys on riser size and location.
  • Identify the effects of production process parameters on riser size and location.
  • Determine riser locations.
  • Calculate size of riser and connections.
  • Demonstrate the basic applications of chills.
  • List unique riser considerations for iron castings.
  • Describe the function and features of a gating system.
  • Identify the effects of different alloys on a gating system.
  • Identify the effects of process parameters on gating system design.
  • Determine gate locations and sizes.
  • Describe the basics of fluid dynamic principles.

Course Introduction

Casting quality and yield are directly impacted by gating design. This course guides participants through the basic functions of gating and risers to provide clean, sound and functional castings.  An introduction to fluid flow and solidification will serve to guide participants through key design concepts of various function elements of a good gating and riser design. Emphasis will be placed on hands-on activities, animations, and simulations to enhance understanding of the filling and solidification processes in a foundry. The focus will be on practical examples in iron, steel, aluminum, and copper castings. The goal will be to introduce to the participants the basics of gating and riser design, common industry norms and troubleshooting.

Module 1: Introduction

Module 2: The Gating and Risering System

  • The Rigging System
  • Customer Requirements
  • Function of the Gating and Riser System

Module 3: Riser Considerations

  • Riser Types and Functions
  • Solidification
  • Alloy Considerations

Module 4: Riser Placement

  • Casting Geometry Considerations
  • Process Considerations

Module 5: Cast Iron Castings

  • Cast Iron Specific Considerations
  • Tools for Placing and Sizing Risers

Module 6: Gating Design

  • Fluid Flow Principles
  • Layout
  • Calculating Gate Size

Module 7: Part Design Influence

  • Casting Geometry
  • Alloy Considerations

Module 8: Process Parameters

  • Pouring Practices
  • Defects and Troubleshooting

Module 9: Conclusion

 

What our students are saying.....

"Been to several classes outside of AFS, thought this class was only two days long, it gave me more useful information then the week-long classes elsewhere."

"Good hands-on activities"

"This course will help me to design much better and improve the existing castings."