Guangzhou EACO electric equipments Blog

AC and   DC Welding   are forms of arc welding that use different currents to produce an electric arc. These types of welding involve the creation of an electric arc between an electrode and the metal being welded. The electric arc provides heat to fuse the metals together. A power supply is used to generate the arc, which can either use an alternating current (AC) or a direct current (DC). The choice of power source (AC or DC) decides the polarity of the electrical current that runs through the electrode. The power source used also impacts the weld produced. Selecting the correct electrode polarity impacts the strength and quality of your weld. Commonly known as ‘straight’ or ‘reverse,’ the two types of current flow are also called ‘electrode negative’ and ‘electrode positive.’  The DC polarity is constant while the AC polarity flows in one direction for half of the time and half of the time in the other, reverse, direction. AC Welding

When you need a neat weld seam Pulsed welds are an easy way to  create smooth, clean welds for TIG welding applications . Putting yourself in a steady pulsing rhythm is the ideal way to keep moving the puddle forward or moving the cup along the weld seam. TIG welding is most often used when errors are minimal and the metal is exceptionally thin. By pulsing along the weld seam, you can adjust the amount of filler metal added, distribute it evenly, and create an aesthetically pleasing weld seam.   High-speed pulses move faster With some practice, many welders can weld effectively at a high speed of 150 pulses per second, creating a neat weld in less time. You won't want to try faster pulse speeds if you're not used to them, but many welders prefer to move very slowly or very fast to create a steady rhythm. Pulses of about 20 per second cause some welders to create uneven, speckled welds. This is especially useful on the fabrication floor, where you see many of the same metal pie...

TIG welding with pulsing is most commonly used on thin metals such as aluminum, but can also be used on copper and various steels. Pulsing can be set by the foot pedal or as a setting on the TIG welder, but when should I use pulsing? There are some very specific applications for pulsing with a TIG welder, and sometimes it can come in handy to get the job done better. Here are some TIG welding applications that use pulsing.   When you need a neat weld seam Pulsed welds are an easy way to  create smooth, clean welds for TIG welding applications . Putting yourself in a steady pulsing rhythm is the ideal way to keep moving the puddle forward or moving the cup along the weld seam. TIG welding is most often used when errors are minimal and the metal is exceptionally thin. By pulsing along the weld seam, you can adjust the amount of filler metal added, distribute it evenly, and create an aesthetically pleasing weld seam.