Porosity is the most common weld defect. For beginners don't rule out lack of penetration and non-compatible welding rod or filler wire. It all depends on how the weld failed if it has. Proper prep and preheat is required in many types of welding. So a little more detailed question can help me give you a more detailed answer. Trapped slag is also a common problem. It creates a void in the weld. Although porosity is the most common defect some porosity doesn't necessarily affect the weld strength.
Since this process of welding makes use of a consumable electrode coated in flux, there may be isolated inclusions forming on the weld bead. This may result in a poorer quality of the weld bead and ultimately lowers the weld strength
under cut , porosity , slag , cracks , misalignment , burn-throw
Verticle down welding will always have lower penetration and less heat applied to the weld joint. As sheet metal is thinner and can not take excessive heat, verticle down reduces burn-through.
smaw welding is sheilded metal arc welding
Arc crater is the depression in the molten metal created by the end of the welding electrode during the welding of metal.
When two pieces of metal are joined by welding they become one as if they were made that way. Welding replaced riveting and reduced the amount of metal used while producing a stronger joint.
It's called Fusion Welding. You answered your own question.
Verticle down welding will always have lower penetration and less heat applied to the weld joint. As sheet metal is thinner and can not take excessive heat, verticle down reduces burn-through.
tinsnips or power tool called a nibbler or welding/cutting equipment if rather thick metal
Some sheet metal companies located in Green Bay, Wisconsin, are Riverside Welding Company, Wisconsin Fabricating Company, Metal Storm and Fox Valley Metal Tech.
You can learn the process of sheet metal fabrication from a lot of institutes and colleges. For example Camosun college in Canada has a program for 30 weeks where you can learn sheet metal fabrication but if you just want to watch and see the basics you can go to providers that sell sheet metal like Barden Fabrications, they use the latest technology like laser cutting and robot welding.
1- Sheet metal press working. 2- Forging and assembly. 3- Welding. 4- assembly of parts 5- Manufacturing parts 6-fabrication of sheet metal. 7-textile machinery manufacture.
The 'welding sparks' that come off during welding are metal particles from the filler metal, electrode, or base metal that are lost during welding. The standard term is spatter.
smaw welding is sheilded metal arc welding
Yes it should work if you are careful with it.
A base metal is also called the Parent metal. It is that metal in the welding practice that has been cut by the various forms of cutting, then prepared and is to be welded. Welding is performed to join one section of the base metal to another section of base metal by means of the various welding processes, e.g. SMAW(Shielded Metal Arc Welding) where welding welding rods are used, GTAW(Gas Tungsten Arc Welding) where Tig wire is used, FCAW(Flux Cored Arc Welding) etc. The welding rods, the TIG wires etc are called the filler metals, for they fill the weld gaps by depositing their molten-state weld metals.
welding.
metal inert gas (MIG) welding
Shielded Metal Arc Welding, known colloquially as "stick".