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Example of a soft mold that causes casting swell defects.
Example of a soft mold that causes casting swell defects.

Green Sand Defect Analysis

Green Sand Defect Analysis is an examination of the appearance, root causes, and potential preventative measures for defects common to green sand systems. Ready to take the next step? Explore the course details and see everything we’ve packed into this program!

Learning Hours: 2

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Course Description

Green Sand Defect Analysis is an examination of the appearance, root causes, and potential preventative measures for defects common to green sand systems. Presented in THORS’ highly visual and interactive learning format, this course is designed to improve the ability of foundry employees to recognize and correct green sand related defects.

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Who will benefit from this Green Sand Defects course?

Companies, individuals, or educational institutions that require an understanding of green sand defect analysis.

Course Classification

This manufacturing course by THORS eLearning Solutions covers identification of key terms, understanding of key concepts, and application of the covered topics.

*THORS uses the Bloom’s Taxonomy Methodology for our course development.

Certificate Awarded for Green Sand Defect Analysis

Example of certificate awarded upon successful completion of the course.

*upon successful completion

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Learning Objectives

  1. Understand some of the basic defects associated with mold handling and ventilation.
  2. Differentiate between the various types of potential gas defects for green sand castings.
  3. Recall the defects that are caused by ventilation related problems.
  4. Identify the common green sand defects associated with expansion and erosion.
Gas porosity defects evident on a metal casting produced in a green sand mold.
Green Sand Defect Analysis

Table of Contents

  1. Molding Anomalies and Venting
    1. Mold Anomalies
      1. Cracked Molds
      2. Runouts
      3. Crush
        1. Mold Crush
        2. Core Crush
      4. Casting Swell
      5. Shrinkage
      6. Stickers
    2. Mold Venting
      1. Blisters
      2. Gas Holes
        1. Blowholes
        2. Pinholes
      3. Surface Pitting
  2. Sand Expansion and Erosion
    1. Expansion Defects
      1. Buckles
      2. Rat Tails
      3. Expansion Scabs
      4. Veins
    2. Erosion Scabs
  3. Metal Penetration and Pouring
    1. Penetration Defects
      1. Burn-On
      2. Burn-In
      3. Explosive Penetration
    2. Pouring Defects
      1. Cold Shuts
      2. Misruns
      3. Doughnuts

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