Welding Career

Introduction

The most common way for permanent joining of metal parts is the welding. In welding process, metal pieces are applied through the heat, fusing and melting them to make a permanent bonding. Underwater welding typically utilized an arc welding process and possibly even a diver. Underwater welds were also typically performed manually or using mechanized welding equipment.

Discussion

A variety of industries use welding works. The equipments used for welding may vary greatly through which the work is done in various industries. Welding is the most efficient and reliable method for subsea pipeline construction, accelerating the development of offshore construction. Underwater welding techniques are recently used for the repair and maintenance of offshore structures. There are two types of underwater welding techniques such as "dry" and "wet". They are identified in accordance with the existence of water in the welding environment. Although dry welding seems to be more frequently used in practical applications, wet welding is simple and less expensive, and so it is more appropriate especially for the emergency repair. Underwater welding is performed widely in subsea pipeline repair. Dry underwater welding sometimes also refer to as dry hyperbaric welding. Dry hyperbaric welding technology can eliminate the side effect of wet environment and the seal of dry welding between the cabin and pipeline (Ferry, pp. 24).

Wet Welding

Welding performed under water is referred to as Wet Welding, which directly represents the wet environment. The underwater welding is somewhat similar to how an open air welding is done. The welding is done manually by using a special electrode underwater. In wet welding, the movement of freedom is more due to which it is the most economical, efficient and effective method. The welder/diver is connected via hoses and cables, and welding power supply is located on the surface (Grubbs, pp. 79).

Hyperbaric Welding (dry ...