Preparation of Double V-Butt Joint by Gas/Arc Welding — Study Resourc…
Fabrication of a double V-butt joint using gas or arc welding.
- Estimated study time: 120 minutes
Study resources
- 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 - Electric Arc Welding Process (PDF) (PDF) — Covers arc welding equipment, electrodes and polarity (DCSP vs DCRP) - needed for all four arc welding jobs in this unit.
- 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.
- SlideShare - Arc Welding Lab Manual (all joints) (Article) — A complete arc welding lab manual with Exercise 1 Single V-Butt joint, plus lap, corner and tee joints - aim, material sizes, tools, operations and procedure for each.
- Butt Joint Edge Preparations Explained (YouTube) (Video) — Explains square butt vs single-V vs double-V vs U preparation and, most importantly, WHEN each is used (double-V is for thicker plates welded from both sides to balance distortion).
- Virtual Labs - Welding Defects (PDF) (PDF) — Double-V joints are usually examined together with distortion and defects (undercut, porosity, slag inclusion, incomplete penetration). This PDF covers them.
- Joints - Single Vee Butt Specification (YouTube) (Video) — Focuses on joint specification terms: root face, root gap, bevel angle, included angle and reinforcement - the labels needed on your sectional sketch.
Taught in these subjects
- Workshop Technology — BMEL12 · Government College of Engineering and Technology, Jammu