March 22, 2022

Electroslag Welding (ESW) and Electrogas Welding (EGW)

All arc welding processes use an arc to complete a circuit and provide heat for the melting of materials. However, arc welding processes differ in how the arc is produced and controlled, how the molten weld pool is protected from oxidation, and whether it uses a consumable or nonconsumable electrode. In this course, we focus on the processes of electroslag welding and electrogas welding. By the end of this course, you will be able to • Describe the processes of ESW and EGW • List common applications for ESW and EGW • Explain the advantages and limitations of ESW and EGW • Understand process-specific information and variables
March 22, 2022

Introduction to Welding

Welding is a common method of permanently joining metal components together. There are many processes and discontinuities associated with welding. There are also numerous symbols used to communicate the requirements of a weld. By the end of this course, you will be able to • List the basic arc welding process • Identify joints and associated weld types • Understand weld and welding symbols • Identify weld discontinuities
March 22, 2022

Welding and Welding Discontinuities

In this course, you’ll learn about welding symbols, which provide a road map that helps a welder create the desired weld joints and weld types. You’ll also learn about the different arc welding processes as well as the different types of weld discontinuities. By the end of this course, you will be able to • Explain the basic welding process • Identify weld joints and weld types • Understand welding symbols • Describe arc welding processes • Recognize weld discontinuities
March 22, 2022

Welding Basics

In this course, you’ll learn what welding is and how it is different from other allied processes, such as brazing and soldering. You’ll also discover the three types of welding processes, the basic joint types, and the differences between fillet welds and butt welds. Finally, you’ll learn how welding affects the metallurgy of the original materials. By the end of this course, you will be able to • Define welding • Describe three AWS-recognized welding processes • Explain the basic joint types • List the different welding positions • Describe the fillet welds and butt welds • Explain how welding affects metallurgy
March 22, 2022

Welding Defects

In this course, you’ll learn what a weld defect is and how it may affect the welded component. You’ll discover the testing techniques used to identify a weld defect, as well as what you can do to prevent most defects. You’ll also learn about the different types and causes of fabricationrelated defects. By the end of this course, you will be able to • Define weld defects • Understand the importance of detecting weld defects • List testing techniques used to identify weld defects • Describe what can be done to prevent many weld defects • Explain the difference between fabrication-related and service-related defects • Describe the different types of fabrication-related defects
March 22, 2022

Arc Welding Safety

Although arc welding uses low voltages, it doesn’t come without risks. In this course, you’ll learn about a few of the safety hazards you may encounter while welding. You’ll also discover guidelines you should follow to help you stay safe on the job. Keep in mind that covering every possible hazard and guideline is impossible, so it’s important that you follow your employer’s safety guidelines at all times. By the end of this course, you will be able to • Know who establishes the safety guidelines you should follow • Understand arc welding hazards • Describe ways to increase safety
March 22, 2022

Elements of an Arc Welding Circuit

All arc welding processes involve the completion of an electrical circuit. In this course, you’ll learn about the different elements that make up an electrical circuit. You’ll also discover the factors you need to consider when choosing a power supply. By the end of this course, you will be able to • Explain the elements of an arc welding circuit • Describe types of power supplies • Describe types of power supply outputs • Explain the difference between constant voltage and constant current power supplies • Define duty cycle rating
March 22, 2022

Shielding

In this course, you’ll learn about shielding. You’ll find out how shielding protects a weld. You’ll also discover the differences between flux shielding and gas shielding. By the end of this course, you will be able to • Define shielding • Understand why shielding is used • Describe flux shielding • Describe gas shielding
March 22, 2022

Arc Welding Parameters

In this course, you’ll learn about the main operating parameters that apply to arc welding. You’ll discover the relationship between arc voltage and arc current. You’ll also find out how electrode feed rate, welding travel speed, and electrical polarity affect the welding process. By the end of this course, you will be able to • List the main operating parameters that apply to arc welding • Explain each operating parameter and how it affects arc welding • Describe the three types of electrical polarity