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  • Arc-Welded Studs
    In stud welding, the heat of an electric arc drawn between the fastener and the work melts a quantity of metal, after which the two heated parts are brought together under pressure. Welded fasteners must be made of a weldable material, and one end of the fastener must be designed for welding. Stud
  • Guarding against arc flash
    to a loss of eyesight. It can also spew molten metal considerable distances where it can lodge in skin or ignite clothing. A 10,000-A arc on a 480-V circuit is said to have the explosive force of eight sticks of dynamite. The National Fire Protection Agency (NFPA), Occupational Safety and Health
  • Arc Flash Concerns & Detecting Early Signs (.pdf)
    The National Electric Code (NEC) has been requiring an arc flash assessment for a few years now, but Utilities do not have to abide by NEC. However, now that the 2007 edition of NESC requires an arc flash assessment by January 1, 2009, all Utilities nationwide will have to perform an assessment
  • "Cold " Laser Beam Improves Arc Welding, Saves Money
    COLUMBUS, Ohio - While arc welding has been used for decades to join metal parts on everything from cars to boats to airplanes, the basic technology behind this multi-billion dollar industry has changed little since World War II. have devised a way to improve the precision of arc welding, and even
  • MIG Welding Guide
    MIG Welding Guide. MIG (metal inert gas) welding, also known as gas metal arc welding (GMAW), is a key joining technology in manufacturing. This book provides a comprehensive, practical and accessible guide to this widely used process.
  • MIG Welding Guide
    IG Welding (GMAW or Gas Metal Arc Welding) — An arc welding process which joins metals by heating them with an arc. The arc is between a continuously fed filler metal (consumable) electrode and the workpiece. Externally supplied gas or gas mixtures provide shielding. Common MIG welding is also
  • Design Considerations to Increase Power Density in Welding Machines Converters Using TRENCHSTOP(TM)5 IGBT
    The demand for portable low cost welding machines, especially in developing countries, is increasing. In the Manual Metal Arc and Tungsten Inergt Gas types, in power range from 1,5kW up to 5kW, discrete IGBTs and MOSFETs are broadly used. Mostly, these machines use hard switching current mode PWM
  • Leakproof tubular welds
    metal-arc welding (GMAW) to attach UNS 1018 pinch bolts to ASTM A512 tubes. They are used in monotube shocks that provide vehicles with an ultrasmooth ride. Problem is, welding leaktight annular joints between the cast-iron pinch bolt and carbon-steel tube isn't necessarily an easy or economical
  • The Capacitor Discharge Stud Welding Process
    Capacitor Discharge (CD) Stud Welding is a semi-automatic ARC welding process. However, with CD welding small diameter fasteners (1/4" and under) are sometimes welded to extremely thin gauge parent metal. Which with any other form of welding would distort the opposite surface, but not with CD Stud
  • Heavy Piercing with Plasma
    High-density plasma arc cutting can effectively cut thick plate. The most challenging aspect, in fact, is that initial pierce. To that end, a few basic strategies help overcome this challenge, allowing the plasma to pierce through inches of metal as effectively as possible.
  • Welding
    as to the materials that can be joined. Diffusion welding is employed primarily to join high-strength materials. In arc welding, an arc between an electrode and the workpiece generates heat. Shielding the molten weld metal from the atmosphere with gases fed in or generated by the weld reaction
  • Keeping Your Welds on Track
    Critical to controlling any project's welding costs is the. ability to increase 'arc on time' and deposit as much weld. metal as possible (referred to as deposition rate) into as. many quality welds during every hour of the project. As. much as this is important, so too is controlling 'over weld
  • Stick Welding
    Stick, the most basic of welding processes, offers the easiest option for joining steel and other metals. Stick welding power sources deliver inexpensive options for welding versatility, portability and reliability. Stick joins metals when an arc is struck between the electrode and the work piece
  • Basics of ESD Safety (.pdf)
    Electrostatic discharge, more commonly known as ESD, appears in many forms. From lightning bolts to a near-invisible spark when touching a piece of metal, there is no single way to encapsulate all of the different forms of ESD. In many cases, ESD can be felt in the form of a mild shock, usually
  • Hypertherm True Bevel TM Technology White Paper
    Using plasma systems to perform bevel cutting on specially designed cutting tables (with bevel heads) has been done in the metal cutting industry for years. By using a bevel head, you can eliminate secondary operations and increase productivity. However, one large obstacle to realizing this gain
  • Providing Protection with Different Types of Welding Fabrics
    Welding is the process of joining two materials together (usually metals) to make them act as a single piece. It works by melting the base metal, and a filler material is often added to this molten material, which forms a stronger joint when cooled. Welding is achieved using a gas flame, laser