Welding is mostly used for fabrication process. Welding means to merge two particles into one by melting and cooling processes. Welding can be heated through gas flame, electric arc, laser, electron beam and ultrasound. Welding can be done in open air, underwater and in space. But welding is considered dangerous. Unless proper precautions are taken, a welding operator may be exposed to burns, electric shock and ultraviolet rays.

Different types of welding:

There are various types of welding. One of the oldest methods is forge welding. Many people stopped using this method by the end of 19th century, when arc welding was developed. In oxy fuel welding, fuel gases and oxygen is used for welding purpose. Other important types include resistance welding, gas metal arc welding, submerged arc welding, flux core arc welding, electro slag welding, laser beam welding, electron beam welding and robot welding.

Some safety tips are as follows:

• Welding process requires heating, so remove all the inflammable materials near the vicinity.
• Wear protective gear to avoid injury caused by fire or gas.
• Fire extinguisher should be in operating condition
• Proper ventilation can avoid accumulation of toxic materials
• A welding operator should always wear woolen clothes instead
  of cotton as it can catch fire easily.
• In extremely dangerous cases of welding, the person doing the welding process should wear flameproof jackets to avoid fire.

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Tags: arc welding, MIG welding, resistance spot welding, TIG welding, welding