In Part 1 of this post, we talked about some of the basics you will need to get started with your next stainless steel welding project. Here in part two, we’ll get into some basic stainless steel welding techniques.
To make a clean weld, you will need to remove all dirt, dust, oil and grease from your piece. Use a metal brush after removing debris and wet contaminants.
For stainless steel, you’ll usually want to use .030-inch diameter stainless steel welding wire; use up to .045-inch welding wire for thicker base pieces. For MIG welding stainless steel, a shielding gas mixture that’s 90 percent helium, 7.5 percent argon and 2.5 percent carbon dioxide is ideal.
Use the push technique for MIG welding stainless steel whenever possible; do this by pushing the welding gun away from the weld puddle instead of pulling it. This technique produces less beading and offers a better view of your work. If deeper penetration is required, use the push-pull or pull techniques.
Use the proper travel angle for your position. This can vary depending on the work, but holding your gun at a 90-degree angle with a travel angle of 5 degrees to 15 degrees is usually best. For T-joints and lap joints, you’ll want a greater angle (up to 70 degrees).
Learning how to weld stainless steel takes time and practice, so don’t be discouraged if your welds don’t come out perfect right from the start. With the right tools and effort on your part, you can be welding like the pros before you know it. Here are a few tips to help you along:
Great welding starts with the right tools and equipment that works the way you need it to! Contact us today for quality welding machines, welding supplies, and welding machine repairs in western North Carolina.