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 â„ƒ, 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.
Most of the wire to fall into this category, including carbon steel wire, low alloy steel wire, alloy steel wire, stainless steel wire and non-ferrous metal wire. Common Welding Wire: SKD11.> 0.5 ~ 3.2mm of HRC 56 to 58 weld up the cold steel, metal stamping die, cutting mold, tool, molding, workpiece stiff dough produced with high hardness, wear resistance and toughness, argon welding rod, welding complement the heated warm-up before, or prone to cracking phenomenon. 63 degree blade edge wire> 0.5 to 3.2mm HRC 63 ~ 55, mainly used in high-speed steel welding pull the knife mold, hot high hardness with mold, forging the total modulus, thermal die, screw mold, wear stiff dough. knife-edge repair. Of SKD61> 0.5 ~ 3.2mm of HRC 40 ~ 43 welding zinc, aluminum die-casting mold, with good heat resistance and resistance to cracking, hot die, aluminum and copper hot forging dies, aluminum and copper die-casting mold, with good heat resistance, grinding, resistance to cracking. The tortoiseshell crack like normal hot pressing molds often, mostly caused by thermal stress also caused due to surface oxidation or corrosion of the die casting raw materials, the heat transferred to the appropriate hardness to improve their life, the hardness is too low or too high NA. 70N> 0.1 ~ 4.0mm wire features of purposes: high hardness steel joint, zinc and aluminum die-casting mold cracking, welding reconstruction, pig iron / cast iron welding repair. Direct surfacing a variety of cast iron / cast iron materials, can also be used as a mold cracking of welding cast iron welding, as far as possible the current lower part of the warm-up with a short distance from arc welding, steel, welding heating and slowly cooling. 60E> 0.5 ~ 4.0mm Features and Applications: Special welding of high tension steel of joint stiff dough production of bottoming, the cracking of the weld. High-strength wire, nickel and chromium alloy components, professional used to prevent rupture of the welding of the bottom, fill the base with high tensile strength, and can repair the steel weld cracking phenomenon. Tensile strength: 760 N / mm ² ting elongation: 26% 8407-of H13> 0.5 ~ 3.2mm of HRC 43 ~ 46 system of zinc, aluminum, tin and other non-ferrous alloy and copper alloy die-casting mold can be used as hot forging or stamping mode. High toughness, good wear resistance and anti-hot-melt erosion resistance, resistance to high temperature softening, anti-high temperature fatigue resistance, can weld up the heat for the punch, reamer, rolling knife, grooving knives, scissors ... do the heat treatment the need to prevent decarburization, heat tool steel after Welding Electrode, the hardness is too high to rupture.