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  • The Influence of Water Temperature & Flow on Resistance Welding Electrode Life
    Many studies have been made to determine the best copper alloys for producing high-quality welds and long life when resistance welding steel, particularly galvanized metal. New electrode designs that use unique geometry have been developed to accomplish the same results. Many control designs can
  • 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
  • Compensating for Varying Material Conditions in Resistance Welding (.pdf)
    Unitek Equipment's advanced weld heads and closed-loop power supplies provide exceptional control over the force and energy variables in resistance welding. In addition to controlling these variables, consistent part placement and material control are required to achieve consistent welding results
  • The Importance of Squeeze Time in Resistance Welding (.pdf)
    Controlling the electrode force is a critical part of successful resistance welding. Repeatable weld force provides for consistent welds. For this reason, all Unitek Peco weld heads include a standard force-firing feature that initiates the power supply when a preset electrode force is reached
  • The Effects of Polarity on the Resistance Welding Process (.pdf)
    welding two resistive parts. resistance electrodes and high. with conductive electrodes, The. resistance tab material. Assuming. Peltier Effect will cause the weld. equal electrode forces and electrode. nugget to be drawn towards the. diameters, the weld nugget under the. positive electrode-to-part
  • Resistance Welding Fundamentals (.pdf)
    the fact that the resistance of the workpieces and electrodes are used in combination or contrast to generate the heat at their interface. Resistance welding is a fairly simple heat generation process: the passage of current through a resistance generates heat. This is the same principle used
  • Optimizing the Welding Process (.pdf)
    welding today. The materials. can be grouped into three common categories; the types of joints achievable. within each of the main groups are detailed below: Figure 4. Basic Principles. Figure 4 shows the key resistances in a. typical opposed resistance weld and the. relationship between contact
  • The Benefits of Closed-Loop Control for the Resistance Welding Process (.pdf)
    welding principles. At the beginning of a resistance weld there is high electrical resistance at the electrode-to-part and part-to-part contact areas (Figure 1). If too much energy is applied before the electrodes have a chance to seat properly, these contact areas can overheat, resulting
  • Resistance welding tackles tubes
    Deformation Resistance Welding (ADRW) makes uniform-strength, leaktight welds in tubes faster than possible with traditional methods. Resistance (spot) welding has been used for years to rapidly join sheet metals such as automobile body panels. Here, a pair of blunt-ended electrodes apply electric
  • Medical Device Link . Improving Resistance Welding Process Control in Medical Applications
    and physical pressure is applied through the electrodes to create the actual joint. The amount of heat generated is a function of the amount of current applied, the length of time it is applied, and the resistance profile between the parts being joined. A typical resistance welding. Improving Resistance