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  • Resistance welding tackles tubes
    Resistance welding was once considered only for joining sheet metals. No more. Delphi Technical Fellow for Welding Delphi Energy & Chassis Systems Welded thin-wall tubes form a variety of sturdy, lightweight structures. But joining the parts has its challenges. Conventional laser, MIG, and TIG
  • Resistance Spot Welding Is Still Spot On
    Resistance spot welding may be an older method, but it is still one of the best for welding many industrial parts, especially in the high-volume production stage. Used extensively in automotive and electronic parts manufacturing, resistance spot welding basically is sandwiching two metals
  • The Benefits of Closed-loop Control for the Resistance Welding Process
    Closed-loop resistance welding power supplies use current and voltage feedback sensors to control the energy delivered to the parts. Closed-loop technologies provide many benefits for the resistance welding process including controlled heating rates, feedback mode options, repeatable weld Heat
  • Medical Device Link . Improving Resistance Welding Process Control in Medical Applications
    Medical Device & Diagnostic Industry New systems enhance manufacturers' control over key variables during the welding process. During the past two decades, resistance welding has become a widespread method for joining metals in medical manufacturing applications such as biosensors, catheters
  • Examining the corrosion resistance of chromium-passivated stainless-steel tubes
    , such as weld bead and heat-affected zones (HAZs). This results in metallic particle generation at susceptible points. Thus, corrosion-induced particles generated at the wetted surfaces of the electropolished tubes affect halogen's point-of-use purity. Recently, chromium-rich oxide passivation (CrP
  • Effects of Encapsulation Gas on Thermopile Detectors
    affects the thermal resistance of the detector and package, thereby affecting the output voltage, responsivity, and time constant. Please note that there are other factors that affect these parameters such as: amount of black absorber, type of package (cold weld vs. resistance weld), and. thermopile
  • Leakproof tubular welds
    Deformation-resistance welding simplifies tube joining. Researchers at Ohio State Univ. used a midfrequency dc 1,200-Hz resistance welder with British Federal WS4004 controller to deformation-resistance weld monotube shock-test specimens from Delphi Energy and Chassis Systems Corp. Suspension links
  • Laser Spot and Seam Welding of Titanium
    Titanium is a light, strong metal, known for corrosion resistance and bio compatibility. It is widely used in the expanding implanted medical device market and equally popular in Aerospace and high value jewelry. With fiber lasers, weld speed and power are the primary variables, and these control
  • Applying Sensors and Cordsets in Welding Environments (.pdf)
    How often are sensors replaced in resistance welding applications? Imagine several sensors on several machines, all with a different degree of exposure to welding operations. This could be anywhere from a few sensors to a few hundred, depending on the application and industry. Also take
  • Projection Welding of Fasteners to Hot Stamped Boron Steel
    . Safety Ratings. The paper reviews the manufacturing issues encountered while projection welding. fasteners onto hot stamped boron, AlSi coated components, and examines the impact of using contact. resistance, short weld times and high weld force coupled with fast mechanical response. Mid-frequency
  • Medical Device Link .
    Engineers should understand the differences between resistance and laser welding and know when to use one or the other. Medical devices use a variety of metal components that are often welded to form a secure and permanent bond. Options available for welding processes are limited because of certain
  • Optimizing the Welding Process (.pdf)
    A quality resistance welding solution both meets the application objectives and produces stable, repeatable results in a production environment. In defining the optimum process the user must approach the application methodically and consider many variables. In this article we will look
  • Welding
    by applying heat and pressure. The temperature is usually below the melting point of the materials joined. Hot-press, ultrasonic, diffusion, and explosive welding are examples of solid-state welding. Fusion welding methods, chiefly gas, arc, and resistance, are the most widely used and are less restrictive
  • Applications
    . Welded stud fasteners may be used to replace studs normally secured by drilling and tapping, arc welding, resistance welding, or brazing. The studs may be placed, where required, without regard to clearances behind the plate, and may be secured to exposed surfaces after other assembly operations

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