Spot Welding Of Galvanized Steel Sheets

Spot welding galvanized steel causes very little spatter.

Spot welding of galvanized steel sheets.

In this study the susceptibility of hot dipped galvanized q p980 steel to lme cracking during resistance spot welding was systematically investigated by an orthogonal experiment. Then px al and st al sheets were overlap welded to steel sheets to produce two layer al steel dissimilar joints with the aluminum alloy sheet on the top and the galvanized steel sheet at the bottom using ht jdl6x12 2 refilled friction stir spot welding machine with sleeve plunging process. Refill friction stir spot welding involves a 3 piece tool consisting of a clamping ring with rotating inner sleeve and pin components made of tool steel to join thin sheets. During the welding.

Arc welding is a versatile method that uses alternating currents to create a high heat arc that melts your flux. Spot welding of galvanized steel sheets however has been a problem from the beginning. The present invention is directed to an improved method and apparatus for effecting spot welds between superimposed sheets of galvanized metal. For some time now it has been high alloy and ultra high strength galvanized steel grades with yield strengths 1 000 n mm that have brought the subject of liquid metal embrittlement back into the limelight.

That a great deal of spatter will occur. Two rsw schemes were considered. Aluminum oxide powder is interposed at the interface between two. An attempt has been made in this program to improve weld quality deterioration in the spot welding of galvanized steel sheets.

Use an arc welder to weld galvanized steel. If you can work outside when using an arc welder. Due to the high strengths the usual. Electrode force is usually increased by 10 to 20 compared to the equivalent setting for uncoated steel of a given thickness otherwise a poorer process tolerance narrower welding range is likely.

It should be obvious even to the causal observer that if you put 2550 degree liquid steel over a galvanized coating that boils at 1350 degrees f. When mig welding galvanized steel the weld puddle is 2550 degrees f. A standard arc welder is undoubtedly the best way to weld galvanized steel. That is poor electrode life due to high welding current.

This study investigated the resistance spot welding rsw parameters for an uncoated mild steel sample and two hot dip galvanized steel samples with different zinc layer thicknesses. Spot welding of steel sheets. In accordance with the method one of the electrodes is comprised of a consumable tip component preferably a steel ball whereby predictable and repeatable welding conditions are effected at each welding cycle.