Welding: Edge Joint

This type of joint is used to join two or more parallel or nearly parallel members. It is not very strong and is used to join edges of sheet metal, reinforcing plates in flanges of I beams, edges of angles, mufflers, tanks for liquids, housing, etc. Two parallel plates are joined together as shown in view … Read more

Arc Welding With Constant Current

The power source is the heart of all arc welding processes. Two basic types of power sources are expressed by their voltage-ampere output characteristics. The constant current machine is considered in this paragraph. The other power source, the constant voltage machine, is discussed in paragraph 10-3. The static output characteristic curve produced by both sources is … Read more

Welding Arc Blow: How to Minimize Magnetic Forces

Welding arc blow is the deflection of an electric arc from its normal path due to magnetic forces. It is mainly encountered with dc welding of magnetic materials, such as steel, iron, and nickel, but can also be encountered when welding nonmagnetic materials. It will usually adversely affect the appearance of the weld, cause excessive spatter, and … Read more

Types of Welds

Types of Welds. It is important to distinguish between the joint and the weld. Each must be described to completely describe the weld joint. There are many different types of welds, which are best described by their shape when shown in cross-section. The most popular weld is the fillet weld, named after its cross-sectional shape. … Read more