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Welding Training Course
More than 2 million students worldwide

Welding Training Course

4.4

This complete welding course takes you from shop safety and metallurgy all the way through SMAW, MIG, TIG, and flux-cored welding, pipe joints, and welder certification preparation. Every chapter is built around real-world skills that employers and inspection codes actually demand. If you wish to weld professionally and pass qualification tests, this is where you start.

Dedika for businesses

What you'll learn:

You will learn how to safely set up and operate four major welding processes: shielded metal arc welding, gas metal arc welding, gas tungsten arc welding, and flux-cored arc welding. The course covers welding metallurgy, blueprint reading, and weld symbol interpretation so you can work directly from engineering drawings. You will practise fillet and groove welds in all positions, including the demanding 6G pipe position. Weld inspection methods, including visual examination, dye penetrant testing, magnetic particle testing, and radiographic testing, are covered in full. You will also learn how to read a welding procedure specification, calculate weld costs, and prepare for welder performance qualification tests under structural, pressure vessel, and pipeline codes.

How you study in practice Welding Training Course

How you practise Welding Training Course

For businesses looking to train their team

With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.

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Course content

8 Chapters • 38 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Welding Safety and Shop Fundamentals

  • Lesson 1 • Shop Layout and Housekeeping

    Shop Layout and Housekeeping

  • Lesson 2 • Personal Protective Equipment

    Covers selection and proper use of helmets, gloves, jackets, and respirators. Correct PPE use is the foundation of every subsequent hands-on activity.

  • Lesson 3 • Fume and Ventilation Control

    Explains toxic fume composition and ventilation strategies to keep exposure below safe limits. Proper ventilation is required before any arc is struck indoors.

  • Lesson 4 • Electrical and Fire Hazards

    Identifies shock, arc flash, and fire risks inherent to welding operations. Understanding these hazards directly informs safe equipment setup and workspace arrangement.

Chapter 2See details

Welding Metallurgy and Base Metals

  • Lesson 1 • Metal Identification Techniques

    Teaches spark testing, magnetic testing, and chemical spot tests to identify unknown metals. Correct identification prevents mismatched filler selection and weld failures.

  • Lesson 2 • Stainless Steel and Aluminium

    Addresses sensitisation in stainless steel and hot-cracking tendencies in aluminium alloys. These materials require process adjustments beyond standard carbon steel practice.

  • Lesson 3 • Carbon and Alloy Steels

    Covers carbon equivalent, weldability ratings, and preheat requirements for common steels. Steel is the most frequently welded material in industry.

  • Lesson 4 • Metal Structure and Properties

    Introduces atomic bonding, grain structure, and mechanical properties relevant to welding. These concepts explain why metals behave differently under heat.

  • Lesson 5 • Heat-Affected Zone Behaviour

    Explains how heat input alters grain size, hardness, and toughness in the HAZ. Controlling HAZ properties is critical to producing sound, code-quality welds.

Chapter 3See details

Reading Blueprints and Weld Symbols

  • Lesson 1 • Standard Weld Symbol Anatomy

    Decodes the reference line, arrow, tail, and supplementary symbols per industry standards. Each symbol element communicates a specific fabrication instruction.

  • Lesson 2 • Blueprint Reading Basics

    Introduces orthographic projection, views, and drawing conventions used in fabrication. Blueprint literacy is required before any symbol or specification can be applied.

  • Lesson 3 • Joint Types and Groove Designs

    Covers butt, T, lap, corner, and edge joints along with groove geometry variations. Joint selection affects accessibility, strength, and required filler volume.

  • Lesson 4 • Welding Procedure Specifications

    Explains how a welding procedure specification documents all essential variables for a weld. Students learn to read and follow a WPS before performing any qualified weld.

Chapter 4See details

Shielded Metal Arc Welding

  • Lesson 1 • Flat and Horizontal Position Welding

    Applies SMAW technique to 1F, 2F, 1G, and 2G positions on plate and pipe coupons. Gravity-assisted positions build muscle memory before progressing to overhead.

  • Lesson 2 • Vertical and Overhead Welding

    Addresses molten pool control in 3G, 4G, 3F, and 4F positions where gravity works against the welder. These positions are required for most structural certification tests.

  • Lesson 3 • Electrode Classification and Storage

    Decodes AWS electrode numbering and explains moisture control for low-hydrogen rods. Proper storage prevents porosity and hydrogen-induced cracking.

  • Lesson 4 • Arc Striking and Bead Techniques

    Teaches scratch and tap arc-starting methods, travel angle, work angle, and travel speed. Consistent technique produces uniform bead width, height, and penetration.

  • Lesson 5 • SMAW Equipment and Setup

    Covers transformer, rectifier, and inverter power sources, plus polarity and amperage selection. Correct setup prevents arc instability and electrode sticking.

Chapter 5See details

Gas Metal Arc Welding

  • Lesson 1 • GMAW on Carbon Steel

    Applies GMAW technique to fillet and groove welds in all positions on mild steel plate. Carbon steel is the primary application base for GMAW skill development.

  • Lesson 2 • Transfer Modes and Parameter Setting

    Explains short-circuit, globular, spray, and pulse transfer and when each is appropriate. Selecting the correct mode for joint position and material thickness is essential.

  • Lesson 3 • GMAW Equipment and Wire Feed Systems

    Covers wire feeders, drive rolls, liners, contact tips, and shielding gas delivery. Equipment condition directly controls arc stability and wire feed consistency.

  • Lesson 4 • Shielding Gas Selection

    Compares CO2, argon-CO2 blends, and pure argon for different metals and transfer modes. Gas composition affects spatter, penetration profile, and mechanical properties.

  • Lesson 5 • GMAW on Aluminium

    Addresses push technique, spool gun vs. push-pull systems, and oxide removal for aluminium. Aluminium's thermal properties and oxide layer require distinct procedural adjustments.

Chapter 6See details

Gas Tungsten Arc Welding

  • Lesson 1 • Filler Metal Addition Technique

    Teaches dip technique, filler rod angle, and puddle manipulation without touching the tungsten. Consistent filler addition is the most skill-intensive aspect of GTAW.

  • Lesson 2 • Tungsten Electrode Preparation

    Explains electrode types, grinding geometry, and balling for AC aluminium welding. Electrode geometry directly controls arc shape, penetration, and contamination risk.

  • Lesson 3 • GTAW on Stainless Steel

    Applies DCEN technique, argon shielding, and low heat input to austenitic stainless steel. Controlling heat prevents sensitisation and maintains corrosion resistance.

  • Lesson 4 • GTAW Equipment and Torch Setup

    Covers power sources, high-frequency start, torch bodies, collets, and back-purge systems. Proper torch assembly prevents tungsten contamination and arc instability.

  • Lesson 5 • GTAW on Aluminium with AC

    Uses AC balance control and high-frequency arc stabilisation to weld aluminium alloys. AC cleaning action removes the oxide layer that blocks fusion on aluminium.

Chapter 7See details

Flux-Cored and Submerged Arc Welding

  • Lesson 1 • SAW Joint Design and Quality

    Covers joint preparation, backing bar use, and single-pass vs. multi-pass SAW procedures. Joint design must account for SAW's deep penetration and wide bead profile.

  • Lesson 2 • FCAW Parameter Optimisation

    Covers wire feed speed, voltage, and contact-tip-to-work distance for consistent deposition. Optimised parameters reduce spatter, porosity, and lack-of-fusion defects.

  • Lesson 3 • Submerged Arc Welding Fundamentals

    Introduces SAW equipment, flux types, and wire-flux combinations for high-deposition flat welding. SAW produces the highest deposition rates of any arc process in flat position.

  • Lesson 4 • FCAW Process Principles

    Explains self-shielded and gas-shielded flux-cored wire operation and their application differences. FCAW bridges SMAW versatility with GMAW speed for structural and field work.

  • Lesson 5 • FCAW Structural Applications

    Applies FCAW to fillet and groove welds on structural steel in all required positions. Structural fabrication is the primary industry application for flux-cored processes.

Chapter 8See details

Weld Inspection and Quality Control

  • Lesson 1 • Liquid Penetrant and Magnetic Particle Testing

    Teaches PT and MT procedures for detecting surface and near-surface discontinuities. These methods reveal defects invisible to the naked eye on critical weld surfaces.

  • Lesson 2 • Visual Inspection Techniques

    Covers pre-weld, in-process, and post-weld visual examination using gauges and lighting. Visual inspection is the first and most cost-effective quality control method.

  • Lesson 3 • Weld Discontinuities and Defects

    Classifies porosity, cracks, undercut, overlap, and incomplete fusion by cause and appearance. Distinguishing discontinuities from rejectable defects is central to quality decisions.

  • Lesson 4 • Destructive Testing Methods

    Covers bend, tensile, macro-etch, and hardness tests used to qualify welding procedures and welders. Destructive tests provide definitive data on weld mechanical properties.

  • Lesson 5 • Radiographic and Ultrasonic Testing Overview

    Introduces RT and UT principles, equipment, and the types of volumetric defects each detects. Volumetric NDE methods are required for pressure vessel and pipeline qualification.

Certification

Your valid completion certificate

This course is for you:

  • Beginners with no shop experience who want a structured welding foundation.

  • Construction workers looking to add certified welding skills to their trade.

  • Military veterans transitioning into civilian manufacturing or fabrication careers.

  • Hobbyists and makers who want to move beyond basic tack welds safely.

  • Maintenance technicians who need formal welding knowledge to advance at work.

  • Career changers drawn to skilled trades and steady industrial employment.

What our students say

Your lessons are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of interest without needing to change platforms... I'm grateful for everything you do, I've already recommended you to other people...
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Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.
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Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!
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Luciana AlvarengaNail Design Student
The platform is fast and simple to use. The diversity of content and complementary videos really help with learning.
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André FelipePrompt Engineering Student

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