FIELD: technological processes.
SUBSTANCE: invention can be used for contact spot welding of flat sheet parts. Electrode cap comprises front working part and hollow base to cover side surface of hollow holder. On front working part there is a cavity with formation of annular working end of electrode-cap separated by transverse wall from cavity for supply of coolant formed by side annular groove made inside hollow base of electrode-cap. Cavity in the front part can be tapered with the base on the front end of the cap electrode. Outer lateral surface can be made conical, the base of which is located on its rear end.
EFFECT: invention provides high strength of the welded sheet joint, wherein the electrode cap has high resistance.
3 cl, 1 dwg
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