Welding Electrodeswelding core and drug skin of two parts. The Carbon Steel Electrodesis outside the core of metal welding, coating (drug skin) uniform pressure applied to the welding core carefully. Different types of electrode welding core. Ie, electrode welding core metal core, in order to ensure the quality and performance of the weld, butt the content of metal elements in the core there are stringent regulations, especially the content of harmful impurities (such as sulfur, phosphorus, etc.), there should be strict restrictions, better than the parent metal. Welding core composition directly affect the composition and performance of the weld metal, so the harmful elements in the welding core as little as possible. Welding of carbon steel and low alloy steel welding core, generally use low-carbon steel core as welding, manganese, silicon, chromium, nickel, and fill up the ingredients (see wire national standard GB1300-77). The one hand, low-carbon and low carbon content steel wire plastic, easier to wire drawing, on the other hand can reduce the reducing gas CO concentration, reduce spatter or porosity can be increased weld metal solidification temperature, beneficial to the overhead position welding. Adding other alloying elements in order to ensure the comprehensive mechanical properties of the weld, welding performance and to remove impurities, but also have a certain effect. Other high-alloy steel, aluminum, copper, iron and other metal materials, the composition of the solder core addition to asking the weld metal are similar, the same should also control the content of impurities, according to process requirements often by adding certain alloying elements.
The electrode is coated with a drug skin for SMAW consumable electrode, which is a medicated skin and welding core composed of two parts. Electrode front-end drug skin around the 45 ° chamfer, in order to facilitate arc. Some bare welding core in the tail, about the electrode length of 1/16, to facilitate the welding clamp hold and conductivity. Electrode diameter Chung actually refers to the solder core diameter) is usually 2,2. 5,3. 2 or 3, 4, 5 or 6mm several specifications, it is common 3. 2, 4, 5 its length "L" is generally between 250 ^ -450 mm. Stainless steel electrode
1, the welding power source, its output power and welding characteristics match should be used in welding processes, and equipped with a connection to the host controller interface. 2, the wire feeder control and speed control system, higher precision wire feeder wire feed speed control, the control circuit should be added to the tachometer feedback Welding head moving mechanism, the composition of the welding head, welding head support frame mounted extension units, to Welding Electrode Manufacturershead mechanism, the drive system should be used servo motor with encoder 4 weldment mobile or deflection mechanism, such as welding turning rolls, head and tail frame flip the rotating platform and positioner machines and other precision-mobile mechanism with servo motor drive 5, the welding clamping mechanism 6, the main controller, also known as the system controller, mainly for the linkage of the various components of the control of welding procedures for control, welding parameter settings, adjust and display. When necessary, can be extended to control functions such as fault diagnosis and man-machine dialogue. 7, computer software, welding equipment commonly used in computer software: programming software, functional software process methods, software and expert systems, etc. 8, the orientation of the welding head tracker, the arc voltage automatic controller, torch yaw and monitoring system 9, assistive devices, such as wire feed system, the loop water cooling system, the flux recovery and delivery devices, wire bracket, cables, hoses and the towline institutions structure design of electrical control design of three parts. 10 welding robots, also known as the mechanical arm, is an important part of the automated welding equipment. Its main functions include: Welding Electrode Material, cutting, thermal spraying, handling.