CPC B23K 35/0205 (2013.01) [B23K 11/11 (2013.01); B23K 11/3009 (2013.01); B23K 11/16 (2013.01)] | 15 Claims |
1. An electrode cap for resistance spot welding, which comprises:
a cylindrical electrode cap body (1);
a contact surface (3) with a welding surface (31), a circumference (32), and a groove (33), wherein the groove (33) is located in the center of the contact surface (3), a upper edge of the groove (33) is connected with the welding surface (31), and the circumference (32) is the outer diameter of the welding surface (31);
a side surface (2) which is a transition area from the electrode cap body (1) to the contact surface (3), and has a shape of an arc surface or a tapered surface;
wherein an upper surface and a lower surface of the side surface (2) are respectively connected with the contact surface (3) and one end of the electrode cap body (1) in the form of arc or chamfer.
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