Orbital welding is Automatic Tunguston inert gas welding. This eliminates chances of tutorial errors in welding. This produces identical welds for hundred of times hence accuracy in welding. exothermic welding
Orbital welding was initially used in the 1960`s when the aerospace industry identified the need for a superior joining way of aerospace hydraulic lines. A mechanism was developed in which the arc from a tungsten electrode was rotated around the lines weld joint. The arc welding current was governed with a control system thus automating the complete process. The result was a more precision and reliable method than the manual welding method it substituted.
Orbital welding became functional for many industries in the early 1980`s when combo power supply as well as control systems were developed that operated from 128 V AC and were physically small enough to be carried from destination to put on a structure site for multiple in-place welds. Present day orbital welded systems offer computer control where welding parameters for a variety of applications can be stored in memory and called up as needed for a specific application. The relevant skills of a certified welder are thus built into the welding system, producing substantial amounts of identical weldings and leaving significantly less room for error or defects.
Orbital Welding Gear
In the orbital welded process, tubes / piping are clamped in place and an orbital welds head rotates an electrode and electric arc around the weld joint to make the required welds. An orbital welding system involves a power source and an orbital welds head.
Power Supply: The power supply / control system supplies and handles the welding parameters in line with the specific weld program created or recalled from storage. The power supply offers the control parameters, the arc welding current, the ability drive an automobile the motor in the weld head and switches the shield gas (es) on / off as necessary.
Weld Mind: Orbital weld heads are typically of the enclosed type and provide an inert atmosphere chamber that is all around the weld joint. Common enclosed orbital weld minds are practical in welded tube sizes from 1/16 inch (1. 6mm) to 6 inches (152mm) with wall thickness` of up to 0. 154 ins (3. 9mm) Larger diameters and wall thickness` can be accommodated with wide open style weld heads.
The Physics of the GTAW Process
The orbital welded process uses the Gas Tungsten Arc Welding process (GTAW) as the source of the electric arc that melts the basic material and forms the weld. Inside the GTAW process (also termed as the Tungsten Inert Gas process – TIG) the arc is established between a Tungsten electrode and the business to be welded. To begin the arc, an RF or high volts signal (usually 3. 5 to 7 KV) is employed to break down (ionize) the insulating properties of the shield gas and make it electrically conductive in order to move through a small amount of current. A capacitor places current into this electric path, which reduces the arc voltage to a level where the electricity can then supply current for the arc. The power supply responds to the demand and supplies welds current to maintain the arc established. The metal to be welded is dissolved by the strong temperature of the arc and fuses together.