Oxy Acetylene Welding:. Gas Weld Aluminum:. Building A Frame:. Top Tools and Resources:. Welding Table. Welding Trailer Plans. Log Splitter. Enjoy this page? Please pay it forward. Here's how Would you prefer to share this page with others by linking to it?
Click on the HTML link code below. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable. Killer Welding Projects Vol. Build A Chopper Frame. There are many reasons why low carbon mild steel is so popular for welding, not the least of which being that it has many different applications. Among the many uses of low carbon mild steel are:. Given that wide range of usage, it should come as no surprise that low carbon mild steel has historically been quite widely used by everyone from scientists to construction workers to engineers.
As indicated by the inclusion of galvanized pipes above, this type of steel does a good job of preventing brittleness and porous microstructures which, as described below, can pose a major hazard to your metal. Here , you can find an article from our website about welding painted metal.
Given the amount of things that are manufactured from stainless steel, it should come as no surprise that it is among the most common welding materials out there. Chances are good that the knives, forks, and spoons in your kitchen cabinets are stainless steel though as alluded to above, in some ways low carbon mild steel cutlery may be a better option.
Stainless steel requires more insight, training, and technique than its low carbon counterpart. That said, they also have a great deal of corrosion resistance, which is good if you are welding something that needs to stand up to corrosive chemicals or moisture. There are three main types of stainless steel — austenitic, ferritic, and martensitic. The former two are very weldable and commonly used, while the latter is more rarely used due to its difficulty, greater hardness, and increased potential for cracking.
Of all the metals on this list, we have been welding with copper for the longest — since at least 3, BC! Copper is softer than either stainless or low carbon steel, and can be quite ductile as well. It does not change when exposed to heat the same way steel does. For these reasons, copper today is typically used as parts of alloys with elements such as lead and selenium. Ultimately, there is no clear-cut answer when deciding which metals and welding methods to use.
August 04, by: IMS. Contact Us. Posted in: stainless steel , Steel , Carbon Steel , aluminum. Time to Read: 1m 36s. Browse Welding supplies for your Project Unlike stick welding, gas metal arc welding or GMAW does not have a coating over the electrode rod.
The right filler metal: Know the alloy of your base aluminum and what conditions the finished part will be subjected to. The two most readily available aluminum filler wires are ER and ER Contact your local welding distributor or aluminum filler metal representative for recommendations on wire alloys that fit your application.
Welding techniques The skill level of the operator, joint types, fit up and positions — as well as the welding power supply — will all have great influence on the weldability of the aluminum. Use a to degree push travel angle — tip and nozzle pointed in the direction of travel See Figure 1.
Pulling or using a drag angle will produce porous, dirty welds because of lack of gas coverage. Holding the tip closer than recommended could lead to the wire burning back to the contact tip and other feeding problems. Avoid large weave beads on aluminum. If larger fillet welds are needed, multiple pass straight beads will provide better appearance and have less chance of cold lapping, burn-through and other weld defects.
It will be necessary to increase torch travel speed as the base material becomes heated during the weld. Troubleshooting common problems If you run into these common challenges when MIG welding aluminum, consider these steps to address the problem.
Burn-through melt through caused by overheating the base material Increase the travel speed and make shorter welds. Move around on the part, spreading out the heat. Dirty welds Use a push angle instead of a drag technique. Increase the voltage to get into spray transfer. Use the proper base metal cleaning techniques, such as using a stainless steel brush. Check for proper shielding gas and wire alloy type.
Wire burns back to contact tip during or at the end of the weld Maintain proper tip-to-work distance. Check to make sure the contact tip size, drive rolls and gun liner match the wire diameter you are using.
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