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WELDING ENGINEERING

OVERVIEW

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Welding Fabrication

• Selected –

•  Application –

• Employment requires…

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WHAT IS WELDING?

•  A JOINING PROCESS THAT IS

INTENDED TO

• HOMOGENOUS IN TERMS OF 

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SO, WHAT IS WELDING?

• WELDING IS MORE OF A PROCESS OF

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WHEN CAN WELDING

HAPPEN?

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HOW CAN WELDING HAPPEN IN

SOLID PHASE?

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HOW IS WELDING BEING

CLASSIFIED?

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WHAT ARE THE PROCESS

PHASES IN WELDING?

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WHAT IS SOLID PHASE

WELDING PROCESS?

• THIS IS BY BRINGING THE MATERIAL AT THE

JOINT INTO PLASTIC CONDITION SUITABLE FOR

WELDING TO OCCUR.(IN THIS CONDITION THE

MATERIAL IS STILL IN A SOLID STATE)

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WHAT IS LIQUID PHASE

WELDING PROCESS?

• THIS IS BY BRINGING THE MATERIAL AT THE JOINT

INTO LIQUID STATE 

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WHAT ARE THE EXAMPLES OF WELDING THAT

UNDER THE CATEGORY OF SOLID PHASE!!

• EXAMPLES ARE:

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WHAT ARE THE WELDING PROCESSES

UNDER LIQUID PHASE?

• EXAMPLES ARE:-

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SMAW (MMAW)

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GTAW (TIG)

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GMAW (MIG)

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SAW

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IS SOLDERING WELDING?

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IS BRAZING WELDING?

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Then, what is the difference

between Soldering and Brazing?

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WHAT IS THERMAL CUTTING?

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EXAMPLES OF THERMAL

CUTTING

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 AIR ARC CUTTING/GOUGING

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WHY ARE WELDING

TECHNOLOGIES DEVELOPED?

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SMAW HAS SHORTCOMING!!

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WHY GTAW BEING

DEVELOPED?

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HOW ABOUT GMAW?

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WHY SAW DEVELOPED?

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WHY FCAW DEVELOPED?

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WHY PLASMA WELDING?

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WHY NEW EVOLUTION OF

WELDING POWER SOURCES?

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Rectification