When I was a kid, I was a bit enjoying watching those big sparks in welding because it looks like big sparklers. What is welding anyway?
Welding is a fabrication or sculptural process that joins material, usually metal or thermoplastic, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint.The spark we see in welding is actually what they call "weld splash". Weld Splash is an unwanted creation of small metal particles that are expelled from the welding area during the welding process. These small metal particles can be airborne in the form of “hot sparks” or can solidify as small “balls” or “filaments” that remain loosely attached to the welding area.
Hazards are both common in arc and oxygen-fuel gas welding, it's even a combination of safety and health risks. By its nature welding produces fumes and noise, gives off radiation, involves electricity or gases, and has the potential for burns, shock, fire, and explosions. A welder must first wear protective gear before doing any welding operations and observe safety practices.
These are the protective gears needed:
Welding Tools and Equipment:
The welder is now all set for welding.
Stick or SMAW Welding
Stick or SMAW is one among the most widely used welding process. The flux covering on the electrode melts during welding. This forms the gas and slag to shield the arc and molten weld pool. The slag must be chipped off the weld bead after welding. The flux also provides a method of adding scavengers, deoxidizers, and alloying elements to the weld metal.
The principle behind SMAW is that heat is generated by the spark that causes the ends of wires to melt an electric arc.
There are several operation that could be done through SMAW, these are: Butt joint , lap joint, T-joint and Fillet joint. (left to right)
Welding is a fabrication or sculptural process that joins material, usually metal or thermoplastic, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint.The spark we see in welding is actually what they call "weld splash". Weld Splash is an unwanted creation of small metal particles that are expelled from the welding area during the welding process. These small metal particles can be airborne in the form of “hot sparks” or can solidify as small “balls” or “filaments” that remain loosely attached to the welding area.
Hazards are both common in arc and oxygen-fuel gas welding, it's even a combination of safety and health risks. By its nature welding produces fumes and noise, gives off radiation, involves electricity or gases, and has the potential for burns, shock, fire, and explosions. A welder must first wear protective gear before doing any welding operations and observe safety practices.
These are the protective gears needed:
- Flameproof gauntlet gloves, a leather or asbestos apron, and high-top shoes to provide good protection against sparks and spatter.
- Protective clothing (jacket/long sleeves) to cover all exposed areas of the body for protection sparks, hot spatter, and radiation.
- Leak-proof helmets equipped with filter plates to protect against ultraviolet, infrared, and visible radiation.
Welding Tools and Equipment:
- Filter rod/electrode
- Welding Machine
- Electrode holder
- Electrode cable
- Base metal or Parent metal
The welder is now all set for welding.
Stick or SMAW Welding
Stick or SMAW is one among the most widely used welding process. The flux covering on the electrode melts during welding. This forms the gas and slag to shield the arc and molten weld pool. The slag must be chipped off the weld bead after welding. The flux also provides a method of adding scavengers, deoxidizers, and alloying elements to the weld metal.
The principle behind SMAW is that heat is generated by the spark that causes the ends of wires to melt an electric arc.
There are several operation that could be done through SMAW, these are: Butt joint , lap joint, T-joint and Fillet joint. (left to right)
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