Lesson Notes By Weeks and Term v4 - SHS 1
WELDING TECHNOLOGY
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
WELDING TECHNOLOGY
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Applied Technology
Class: SHS 1
Term: 2nd Term
Week: 12
Grade code: 1.4.2.LI.4
Strand code: 4
Sub-strand code: 2
Content standard code: 1.4.2.CS.1
Indicator code: 1.4.2.LI.4
Theme: METAL TECHNOLOGY
Subtheme: WELDING TECHNOLOGY
This page supports the lesson note with a companion video and a short classroom-ready summary.
For class groups and homework, share this lesson page so learners also get the summary, objectives, and full lesson context.
Welding is a fundamental skill in Ghana's technical and industrial landscape. From the local "fitter" who makes our burglar-proof windows and gates, to the mechanics at Kokompe or Suame Magazine repairing vehicles, to large-scale construction projects, welding is everywhere. It is the process of joining metals together permanently using intense heat. Understanding the two most common types—Gas Welding and Electric Arc Welding—is crucial for any student of technology. This lesson will equip you with the knowledge to compare these two methods, helping you understand why a welder chooses one over the other for a specific job.
A. What is Welding? Welding is a fabrication process that joins materials, usually metals, by using high heat to melt the parts together and allowing them to cool, causing fusion. Sometimes, a filler material (a welding rod or wire) is added to the joint to form a strong bond.
Think of it like using a hot glue gun, but for metal. The heat melts the metal surfaces, they mix together (sometimes with filler), and when it cools, it becomes one solid piece.
There are many types of welding, but we will focus on the two most common ones you will see in our communities: Gas Welding and Electric Arc Welding. B. Gas Welding (Oxy-Acetylene Welding)
This method uses the heat from burning a mixture of two gases: Oxygen and a fuel gas, most commonly Acetylene. This is why it is officially called Oxy-Acetylene Welding (OAW).