Characteristics, Applications, and Operations of Capacitor Discharge Stud Welding Machines

Characteristics, Applications, and Operations of Capacitor Discharge Stud Welding Machines

Capacitor discharge stud welding machines are widely utilized in industries such as shipbuilding, automotive manufacturing, and electrical cabinets due to their rapid operation and minimal heat distortion, which make them particularly suitable for thin sheet stud welding. This welding technology eliminates the need for gas shielding, making it straightforward for use in automated production lines, notably prevalent in automotive welding applications. Welding productivity depends on the charging speed of the capacitor, achieving rates of 8 studs per minute manually and up to 60 studs per minute in automated settings.

Capacitor discharge stud welding can be categorized into arc-draw and arc-stub types. Arc-draw is similar to short-cycle arc stud welding, with welding times typically ranging from 3 to 10 milliseconds. Arc-stub is further divided into contact and gap types, with contact welding times ≤3 Milliseconds and gap welding around one millisecond. Using gap-type capacitor discharge stud welding allows for welding aluminum and its alloys without gas shielding. Welding energy is determined by the capacitor's capacitance and charging voltage, calculated by the formula W=CU2.

Capacitor discharge stud welding machines should be equipped with current-limiting protection and automatic discharge devices to ensure safety. In welding, "straight polarity" is recommended for ferrous metals, while "reverse polarity" is used for copper, aluminum, and their alloys. Welding parameters include welding current, voltage, time, lift height, extension length, and insertion speed, adjusted according to stud diameter and workpiece material. For high-quality carbon steel welding studs fasteners and professional technical support, don't hesitate to contact us at adelajonly@gmail.com or visit our website at [Juxin Fasteners]https://www.juxinfasteners.com.