Shielded Metal Arc Welding (SMAW) is frequently referred to as stick or covered electrode welding. Stick welding is among the most widely used welding processes. The flux covering the electrode melts during welding. This forms the gas and slag to shield the arc and molten weld pool. The slag must be chipped off the weld bead after welding. The flux also provides a method of adding scavengers, deoxidizers, and alloying elements to the weld metal.
Stick Welding Benefits:
• Equipment used is simple, inexpensive, and portable.
• Electrode provides and regulates its own flux.
• Lower sensitivity to wind and drafts than gas shielded welding processes.
• All position capability.
Stick Welding Discontinuities:
• Undercut
• Incomplete fusion
• Porosity
• Slag Inclusions
• Cracks
Stick Welding Problems:
• Arc Blow
• Arc Stability
• Excessive spatter
• Incorrect weld profile
• Rough surface
• Porosity
Welders:Plasma Cutter:Arc welder:Mig Welder:Tig Welder:Diesel Generator:Cutting Machines
Plasma-welding-tips are useful reminders intended to stress the main characteristics of Plasma Arc Welding (PAW) for the correct exploitation of its specific advantages.
The first of the Plasma-welding-tips is a correct definition of PAW, useful for understanding the differences that make the process unique.
Plasma Arc Welding is defined as a gas shielded arc welding process where the heat for welding is generated by an arc producing collimated plasma by the passage of the shielding gas through a constricting nozzle.
The copper alloy nozzle is called constricting because it presents a limited diameter orifice, through which the shielding gas, highly ionized by its transit through the arc, must pass.
The concentrated and collimated jet stream of ionized gas (composed of nearly equal number of electrons and ions of gas atoms and molecules) that exits at very high temperature (about 17,000 0C or 30,000 0F) from the constricting nozzle is called a plasma column.
Plasma Arc Welding can be performed with or without additional filler metal. In manual applications, the filler metal as added as needed by hand. In the mechanized version, the filler metal is added from the side by a wire feeder.
Plasma-welding-tips concerns understanding the specific features of the process detailed below, and using its capabilities for obtaining successful welding results.
Welders:Plasma Cutter:Arc welder:Mig Welder:Tig Welder:Diesel Generator:Cutting Machines
Welding is a proven technique of permanently melding two metals together. Metal Inert Gas (MIG) welding is a world renown and appreciated trade, however, the risks can out method the rewards of its manufacture if the proper MIG Welder Safety guidelines are not taken. MIG Welder protection should be the main concern of the practitioner, novice or master, it should not matter what their ability level is, and the correct safety measures should always be taken.
Some ordinary guidelines of security may seem common sense enough but sometimes employers may push out these guidelines, don’t let them. Even if you are welding on your own, it is very significant to follow all of the MIG Welder Safety protection in order to enjoy a safe, creative experience. Some examples of safety precautions are:
Make sure that all of your skin is covered and protected from the powerful UV light that is created. Just close your eyes for a quick tack will not insure that you will not get arc eye. (Arc eye is an extremely painful result of improper exposure to the welding light. The feeling of pins and needles being positioned in the eye is an ordinary description.)
Always make sure that the area you are working in has an enough exhaust system in place. If you have problem with extraction, be sure to wear a breathing mask. Never have everything that is flammable wherever close to where you are working.
Never fail to remember the basic MIG welder security guidelines and never attempt to weld with no an instructor if you are not considered a professional.
Welders:Plasma Cutter:Arc welder:Mig Welder:Tig Welder:Diesel Generator:Cutting Machines
There are three types of welding methods to consider. They differ by speed and cost. The methods are all available to all welding and hardfacing products. However, specific products often have properties that are somewhat unique and not exactly duplicated when utilized by a different process.
Stick Welding:
Manual or stick welding requires the least amount of equipment and provides maximum flexibility for welding in remote locations and in all positions. Typically, each rod permits welding for about one minute. In seconds, one can change from mild steel to stainless to hardfacing. In seconds, the electrode can change from small to large diameter for small or large welds. Although simplest, this type of welding takes the greatest operator skill.
Semiautomatic:
This type of welding uses wire feeders and continuously fed electrodes. The welding gun is hand-held by the operator. The gun keeps feeding wire as long as the trigger is depressed. This is also much easier to learn than stick welding. This type of setup is becoming more popular on farms, which do more than minimal repair work. Semiautomatic welding increases deposition rates over manual welding because there is no need to stop after burning each rod.
Automatic:
Requiring the greatest amount of initial setup, automatic welding has the highest deposition rates for maximum productivity. The welding gun is carried by a mechanized carriage and the welding operator just pushes a start button. This would rarely be found on a farm, but is common at repair centers for heavy equipment that would rebuild your parts for you if the schedule was mutually acceptable.
Welders:Plasma Cutter:Arc welder:Mig Welder:Tig Welder:Diesel Generator:Cutting Machines
There are lots of different models of TIG welding torches and if you get the incorrect one, it’s similar to buying shoes that don’t fit…painful. So which TIG welding torch do you want? First of all, you need to come to a decision whether to go with air cooled or water cooled.
If you are a hobbyist welder, air cooled is the method to go. Why? For one thing, water coolers cost minimum $ 450 and air cooled TIG welding torches don’t need a water cooler. That’s why.
Once you choose between an air cooled vs. water cooled torch, then you still contain some choices to make. Like whether to get a large TIG torch or a little one, a TIG welding torch with a gas valve built in or not including, a flex head vs. a rigid head, a 12 foot vs. or a 25 foot torch, etc.
Here is a list of proposals to guide you to buying the right TIG torch for your position:
• If you want portability, a 26 foot torch is the way to go.
• For portable circumstances that need fairly high amperage similar to aluminum TIG welding, the large style air cooled torches similar to a number 18 or 26 are in order.
• For little precise and low amperage circumstances, a little gas cooled torch like a WP serious works great.
• If you can afford it, a coolant re-circulator like an Tokentools Cool mate opens up your choices and lets you use attractive much any TIG welding torch you want.
Welders:Plasma Cutter:Arc welder:Mig Welder:Tig Welder:Diesel Generator:Cutting Machines