The difference between a stand mounted and suspended Welding machines is basically in the location of the torch or arc. Stand mounted Welders typically hold a piece of steel between the torch and the welding rod, while the suspended ones hold a welding torch between two pieces of steel. Both are used for the same tasks but stand mounted welders generally provide a cleaner, more sanitary environment because there’s no hot plate to transfer metals to, and they don’t have the torch moving up and down and producing fumes. There are some variations on both types of welders, such as having both ends of a piece of steel held in place by a spring loaded rings, which is called a tip dresser. Also, some tip dressers have movable shoulders that can control the angle of a weld without needing a constant pool of electric current.
If you’re purchasing a new welding equipment or even reusing an older one, make sure that the weld controller that came with the machine offers setting adjustments and easy programming for your particular needs. While this may not seem important to you right now, it will become extremely important in the future and also make the welding equipment more user-friendly. This controller is the brains of your welding equipment, and without it you don’t have a reason to do anything other than muddling around with the knobs on the face of your weld controller. This is why it’s always a good idea to go over your weld controller with a fine tooth comb before purchasing it. There is nothing wrong with testing out a few different controllers until you find one that’s just right for your needs, and it also ensures that you won’t have any compatibility problems down the road if you decide to upgrade to a different welding equipment.
Another important feature of your welding equipment should be proportional valve control. Most welders will only be using manual welding pressure when their welding work is below the acceptable limit. To ensure that you never need to resort to this, make sure that your weld controller is capable of automatically setting the proper welding current according to the amount of manual welding pressure that is being applied. With proportional valve control, you never have to worry about damaging your weld or the integrity of your weld.
Of course, the main reason to buy a weld controller in the first place is so that you don’t have to worry about manually setting your welding current, and instead you can rely on the auto-calibration feature of your spot welding controller. With auto calibration, your weld is automatically measured and taken into account, giving you the appropriate welding pressure. Because you’ve been so careful to only use manual tension whenever necessary, you’ll never have to worry about accidentally overriding your auto calibration. This can help you tremendously, especially if you’re doing a lot of welding jobs and don’t want to have to guess as to how much pressure is on the line.
There are also many other benefits to using a controller like this, however. First, it will help you avoid dangerous short circuits that are a real risk with high-powered welding operations. When you weld with high voltage, particularly those that are held at hand by a welder, there is always the risk that something can go wrong, even when the welding currents are under control. Some of these sparks fly so fast and far that they can literally shock the person holding the line. By using proportional valve relief valves, you can prevent the sparks from traveling any further and sticking onto the circuit breakers. It’s important to have your welder limit the amount of current flowing through the wire while the weft is still being added, to prevent the possibility of a short circuit occurring.
Suspended spot welding torches also use a form of automatic voltage regulation. When these welds are done with a higher than required voltage, the welds are not as strong as they should be, and there is less than ideal conductivity and fusion of gases in the weld puddle. This is a problem because the welds will never be as strong or complete as they should be if they have reached their fusion and arc welding temps. Using a controller will help to limit the voltage used for welding torches, and you can prevent your welds from falling short and failing.