Lap Joint by Arc/Gas Welding — Study Resources & PYQs
Preparation of a lap joint using arc or gas welding.
- Estimated study time: 75 minutes
Study resources
- Go Practicals - Welding Shop (Lap Joint): Tools & Diagram (Article) — Indian practical-file page for exactly this job: welding shop introduction, tools and accessories, labelled diagram and explanation of the lap joint.
- Our E-Labs - Lap Joint by Arc Welding (procedure) (Article) — The same lab blog also carries the Lap Joint experiment: aim, MS plates, tools list, cleaning, tack welding at both ends, full run and slag removal.
- SlideShare - Arc Welding Lab Manual (lap joint exercise) (Article) — Explains lap joint geometry (one plate overlapping the other) and the fillet weld used to join it - note that a lap joint uses a fillet weld, not a groove weld.
- Virtual Labs - Electric Arc Welding Process (PDF) (PDF) — Use for current setting and electrode selection theory, which is the part of the lap joint viva students most often lose marks on.
- Virtual Labs - Welding: Principles and Classification (PDF) (PDF) — Government Virtual Labs lesson on the principle of welding and the full classification chart of welding processes. Read this before any welding experiment.
- Virtual Labs - Gas Welding / Oxy-Acetylene Welding (PDF) (PDF) — Oxy-acetylene equipment and the three flame types (neutral, oxidising, carburising). Essential for the 'by gas welding' half of every job in this unit.
- NPTEL - Manufacturing Processes: Casting and Joining (Article) — Week 3 onwards covers joining processes, types of joints, weld metallurgy and welding defects. Free IIT lectures with video.
Taught in these subjects
- WORKSHOP TECHNOLOGY — BMEL1 · Government College of Engineering and Technology, Jammu
- Workshop Technology — BMEL12 · Government College of Engineering and Technology, Jammu