Materials Technology and Metallurgy notes KNEC Diploma

Introduction

This module unit designed to equip the trainees with knowledge, skills and attitudes to acquire Competence in routine vehicle service.  After completing this module, the trainee is capable of working in a garage or service station.  It targets persons who are interested in gaining basic mechanics skills.  The module forms a basis for all other modules to be covered in the course.

TOPICS COVERED:

Properties of Engineering Materials

  • Types of engineering materials
  • Properties of engineering materials
  • (physical and mechanical)

Structure of Materials

  • Crystalline state
  • Crystal structures
  • Terminologies

Production of Iron, Steel and Cast Iron

  • Types of ores, charging materials
  • Types of furnaces

Cast Irons

  • Types and structures of cast irons
  • Properties of C.I.

Carbon Steels

  • Classification of carbons steels
  • Properties of plain carbon steel
  • Application of plain carbon steel

Alloy Steels

  • Alloying elements and their effects
  • Classification of alloy steels
  • Corrosion resistant steels and their application
  • Ferritic, martensitic and austenitic stainless steels
  • Weld decay and sigma phase
  • Heat resisting steels
  • Tool steels

Non-Ferrous Metals and Alloys

  • Non-ferrous metals
  • Production of non-ferrous metals
  • Properties of non ferrous metals
  • Forms of supply
  • Brass, Bronze, Cupronickels
  • Duralumin
  • Cast and Wrought Alloys

Plastics, Wood and Rubber

  • Types of plastics
  • Wood
  • Rubber

Bearing Materials

  • Metals/non-metals
  • Bearing properties

Corrosion and Its Prevention

  • Types of corrosion
  • Corrosion prevention

Heat Treatment

  • Annealing
  • Tempering
  • Normalizing
  • Hardening
  • Case hardening
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