“Energy storage welding” typically refers to a resistance welding process that uses stored electrical energy—usually from capacitors—to deliver a very high current in a very short time. This type of welding is commonly called capacitor discharge welding (CD welding).
Key Characteristics of Energy Storage (Capacitor Discharge) Welding:
Stored Energy: Electrical energy is stored in capacitors and then rapidly discharged through the welding circuit.
High Peak Current, Short Duration: The process delivers a powerful current pulse (in milliseconds), which melts and bonds the materials.
Low Heat-Affected Zone (HAZ): Because the energy is applied so quickly, there is minimal heat spread, reducing material distortion.
Common Uses: Often used in stud welding, micro-welding, or spot welding of thin metals, battery tabs welding, and delicate components welding.
5 in 1 handheld metal laser welding machine working for battery welding. video
Advantages:
Precise, repeatable welds;
Minimal damage to surrounding material;
Good for welding dissimilar metals or small components.
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