Engineering Drawings for Forgings

The THORS Engineering Drawings for Forgings course offers instruction on mechanical drawing interpretation relevant for the forging industry, with a focus on forging inspection print analysis. The course begins with a review of forge shop process planning and other fundamental concepts related to forging operations, then offers a targeted examination of key concepts observed on a variety of typical forged part inspection drawings. Drawing interpretation is explained using animations, then reinforced via interactive full-size reference prints.


Learning Objectives

  • Distinguish between the various types of mechanical drawings relevant for forging operations, and where in the forge shop process planning workflow each of these prints are developed.
  • Identify various types of inspection and testing methods utilized by the forging industry, including 3D inspection and non-destructive testing.
  • Relate a variety of forging-specific callouts or notes on inspection prints to the inspection process used to compare measured values against nominal, or design, values.
  • Recognize common industry guidelines for tolerances applying to forgings produced on forging machines as well as hammer and press forgings.
  • Verify knowledge retention by applying skills learned to additional inspection drawing examples.
Course Length: 3 HRS

Table of Contents

Forge Shop Operations

  • What is Forging?
  • Forge Shop Process Planning
  • Material Requirements
  • Material Inspection
    • Dimensional Inspection
    • Metallurgical Inspection
  • Reading Dimensions
    • Bilateral Tolerance
    • Unilateral Tolerance
  • Inspection and Testing
    • Dimensional and CAD-Based Inspection
    • Hardness Testing
    • Non-Destructive Testing for Defects
    • Magnetic Particle Inspection
    • Ultrasonic Inspection
    • Liquid Penetrant Inspection
    • Eddy Current Testing

Inspection Drawing Focal Points

  • Draft Angle
  • Informational Notes
  • Machining Allowance
  • Surface Finish
  • Wall Thickness

Drawing Examples

  • Arm Forging
  • Gear Blank Forging Series
    • Gear Blank Inspection Drawing
    • Gear Blank Insert Dies Drawing
  • Helical Pinion Forging Series
    • Rough Forged Pinion Inspection Drawing
    • Rough Turned Pinion Inspection Drawing
    • Machined Helical Pinion Inspection Drawing
  • Shackle Forging
  • Shaft Forging

Focal Points

  • As Forged
  • Draft Angle
  • Flash Extension
  • Heat Treatment
  • Machining Allowance
  • Mismatch
  • Straightness
  • Theoretical Sharp Corner (TSC)
  • Thickness
  • Underfill

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