Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a non-consumable tungsten electrode to produce the weld.he use of any shielding gas containing an oxygen compound, such as carbon dioxide, quickly contaminates the tungsten electrode, making it unsuitable for the TIG process. In 1953, a new process based on GTAW was developed, called plasma arc welding.
Another cause of ridges on fingernails is lack of moisture. If your nails are ridged or cracked, massaging the nails or cuticles with a moisturizing cream or oil can be very beneficial, as can increasing the amount of water you drink.
Vertical Ridges 1. Age âThere are many reasons for ridged nails, but the most common is aging,â says Dr Phoebe Rich, clinical adjunct professor of dermatology at Oregon Health Science University. âAs we age the nail matrix becomes atrophied in areas, resulting in longitudinal ridging of nails. I tell people they are like wrinkles in the nails.â Our nails develop ridges as we age (Image via iStock) 2. Vitamin deficiency. A healthy balanced diet, rich in Omega 3 fatty acids and whole grains, combined with regular vitamin E hand and nail massages are the best cures for fingernail ridges. 3. Rheumatoid arthritis