Projection welding nut with annularly distributed welding legs

Abstract

The invention discloses a projection welding nut with annularly distributed welding legs, which can effectively adapt to a plate with the thickness of more than 3mm through a columnar part and annularly distributed welding legs arranged on the columnar part in cooperation with a projection welding process, and can greatly improve the bonding force and strength of the projection welding nut and the plate while improving the strength of the plate.

Description

technical field [0001] The invention relates to a projection welding nut, in particular to a projection welding nut with circularly distributed welding legs. Background technique [0002] With the gradual increase in the number of cars per capita in China, traffic accidents have also increased. Consumers have higher and higher requirements for the strength of car bodies, and the thickness of plates for car safety energy-absorbing parts is also gradually increasing. [0003] Traditional thin sheets generally use traditional projection welding nuts (such as figure 1 As shown) and projection welding process for welding, since the plate is thinner, the penetration depth and heat-affected zone after welding are larger, and the bonding force and strength between the projection welding nut and the plate after welding are guaranteed. [0004] However, as the thickness of the plate increases, the penetration depth and heat-affected zone after welding are greatly affected, and the bo...

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Problems solved by technology

[0005] However, welding on plates with a thickness of more than 3mm using the second welding process is complicated, expensive, time-consuming, and inefficient.

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