Heat treatment is part of the essential advance metallurgy learning.   The purpose of heat treatment is to alter a metal physical and mechanical properties without changing the shape of the product.  

 

Heat treatment is inadvertently done manufacturing.  Training includes the basic heat treatment: annealing, normalizing, tempering, and hardening.  Each of these types brings out different results in metals by involving different processes in heating, soaking and cooling.  For better understanding of trainees without engineering background, this course is added some basic metallurgy training topics: steel understanding (ferrous and non-ferrous), mechanical properties, common test equipment and effect of alloying elements.  

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In order to apply the learned knowledge effectively, the teaching materials, discussion, quiz, and assignment will be based on common metals used by your company or the current problem facing or your training needs.  It applies on premium customized course.  This would enhance trainee’s knowledge in understanding, analyzing, trouble shooting, and preventing possible failure of heat treatment in their daily work.

 

 

 

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1. To understanding, analyzing, trouble shooting heat treatment process and outcomes

2. To improve and restructure the work for better quality and outcome

3. To identify quality of the materials received by the supplier (Eg. heat treatment supplier) meet company requirement

4. To reduce cost of waste such as defects, and unnecessary steps taken (Eg. Unnecessary SOP written with old machines manual), trouble shooting failure of heat treatment, the common mistakes etc.

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 To understand the fundamental of metallurgy and heat treatment

• To gain through knowledge of process control of these processes

• To trouble shooting of these processes

• To applied knowledge learned in the reality

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INTRODUCTION

• What is steel? Classification of steels (Ferrous & Nonferrous)

• What is heat transfer

• Purpose of heat treatment

• Properties of metals (tensile, shear strength, compressive strength, ductility, brittleness, toughness, hardness, corrosion resistance)

• Testing and equipment on properties of metals​

• Discuss testing method, properties and applications relation

• Major alloying elements (aluminium, copper, manganese, silicon, magnesium, zinc, and other elements)

• Discuss the related properties vs application

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HEAT TREATMENT

• Heat Treatment of metals

• The iron carbon equilibrium diagram (ferrous metal) and transformation diagrams & an overview of microstructure metallography of each effect

  • % of carbon affects the microstructure

  • Martensitic microstructure

  • Tempered martensite microstructure

  • Cementite

  • Ferrite

  • Pearlite (Laminar structure)

  • Austenite

• The aluminium-copper (non-ferrous metal) binary phase diagram & an overview of microstructure metallography of each effect 

• Effects of alloying elements on hardness, hardenability and other mechanical properties

• Heat treatment types: annealing, normalizing, hardening, tempering (include quenching) & metallography microstructures 

• Heat treatment process: heating, soaking, and cooling (temperature and time)

• Heat treatment for ferrous (hardening, tempering, annealing, normalizing, case hardening)

• Heat treatment for non-ferrous metals (annealing, solution heat treatment)

• TTT (time-temperature transformation) diagrams

• Non-heat treatable metals

• Other heat treatment methods (decarburizing, nitriding, precipitate hardening/age hardening, sphereoidizing, austempering, cryogenic treatments

• Heat treatment defects & trouble shooting

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APPLYING LEARNED KNOWLEDGE

• Assignment relates to current situation & critical question 

• A quiz to ensure trainees understand their learning

• Conclusion

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