SMAW1, features, security, arc Welding Wire is the most widely used in industrial production welding, its important reason is that the arc energy efficient and easy to convert electrical energy into the welding process, heat and mechanical energy. SMAW manually manipulate the electrode Welding Electrode, can be all-position welding; portable welding equipment, handling flexible, applicable to all kinds of metal materials, various thickness, the welding of a variety of structural shapes. However, due to its specificity to the following unsafe factors: 1) arc arc column center temperature up to 6000 ~ 8000 ℃, welding rod, welding parts and medicine skin under high temperature, the occurrence of evaporation, condensation and gas to produce large amounts of dust; The) arc around the air in the arc strong radiation and will produce ozone, nitrogen oxides and other toxic gases; 3), splash, improper welding machine line failure or fuel container pipeline welding explosion-proof measures will cause an explosion and fire accidents. 4) Welding Equipment-load voltage is higher than the safe voltage of human body can bear, prone to electric shock.2, the use of safety requirements 1), the welding machine must have a separate dedicated power switch, the prohibition of welding machines to share a power switch; 2), the welding machine to prevent the collision, moisture, or excessive vibration; 3), welding machine exposed live parts should be in good condition protective equipment, uncharged shell should be grounded, is strictly prohibited overload; 4), welding cable jacket integrity, good insulation, you should use the wires; 5), electrode holder must have good insulation, heat insulation capacity, is strictly prohibited overheating welding tongs dip immediately after cooling in water; 6), welding operations, spaces should have ventilation and dust removal facilities, flammable, explosive substance from the operating sources of ignition shall not be less than 10m; 7) welding operations should wear a good labor protection supplies, strengthen their own protection, to ensure their own safety.