JX-Q199B Overhead Projection Weld Bolts - Type B

Name:Overhead Projection Weld Bolts

Material: Carbon Steel, Stainless Steel

Carbon steel Grade:5.8,6.8,8.8,10.9

Projection Weld Studs & Screws

Proj Weld Studs

Stud welding refers to joining circular-shaped parts with flat workpieces using a welding arc and applying a pressing force. Projection weld studs and screws are particular types of fasteners that are specifically designed to be welded to another object. There is a wide range of spot weld stud, and tab weld stud options, depending on the specific application.

1. The working principle of projection welding:

Projection welding is an evolution of spot welding. Generally speaking, a mountain point is punched out on one of the two plates, and then welded. Due to the concentration of current, it overcomes the defect of nugget offset during spot welding. One or more nuggets form at the joint.

2. Features of the projection welding process:

During projection welding, the electrode must drop rapidly as the bump is sub-collapsed, otherwise spatter will occur due to pressure loss, so a projection welding machine with good electrode followability should be used.

The electrode pressure should ensure that the bumps are completely sub-collapsed when they reach the welding temperature so that the workpieces can fit closely. If the pressure is too high, the bumps will be crushed prematurely, and the function of projection welding will be lost.

The reduced flow density will reduce the strength of the joint, and the pressure will be too small to cause sub-heavy splashing.

Usually, the welding time of projection welding is longer than that of spot welding, and the flow is smaller than that of spot welding. Multi-point projection welding is a slightly longer welding time than single-point projection welding to reduce the difference in heating at each point caused by inconsistent bump heights.

The current required for each spot of projection welding is smaller than that of spot welding the same spot, but the current must be able to melt the bump before the bump is completely crushed. The welding current is approximately the current required for each bump multiplied by the number of bumps.

Size Can also be According to the Customer's requirement for manufacturing, please check the detailed specification sheet details PDF, CAD, 149-150 Page See more product details.

Packaging: The inner packaging is a plastic bag, and the outer packaging is a carton. Then the tray. Carton size: 29*19*19.5cm and 23.5*17.5*8, cm and pallet size: 215*100*90cm, or as your request