Electric Arc Weld, Principles Of Arc Welding Substech

The shielding gas protects the weld area from atmospheric contamination.

Election commission of india card. The electric current used may be either direct dc or alternating ac. Based on the welding type voltage ranges between 15 45 volts while the range of current is between 30 600 amperes. This article will describe the use of flux coated.

The power source used in arc welding is electricity electric current. The electric arc is produced when two conductors are touches together and then separated by a small gap of 2 to 4 mm such that the current continues to flow through the air. As with any other electric welding process skin and eyes need to be properly protected from uv light.

It is a type of welding that uses a welding power supply to create an electric arc between a metal stick electrode and the base material to melt the metals at the point of contact. The arc is started by touching the electrode momentarily against the work to complete the. Electric shock fumes burns and fire are other risks.

Arc welding is a process of fusing two pieces of metal together through the use of an electric arc which creates an intense heat capable of melting the metal parts. The arc welding is a fusion welding process in which the heat required to fuse the metal is obtained from an electric arc between the base metal and an electrode. The electrode can either be a rod with the purpose of simply carrying the current between the tip and the work.

The safety page discusses how to minimise these risks. The arc is formed between the actual work and an electrode stick or wire that is manually or mechanically guided along the joint. In arc welding the intense heat needed to melt metal is produced by an electric arc.

Ac or dc machine. The welding region is protected by some shielding gas vapors or slag. In arc welding the electric arc is produced between the work and the electrode by a voltage b flow of current c contact resistance d all of these.

Shielded metal arc welding is the process of joining two metal pieces using a flux covered electrode which is melted in an electric arc and becomes a fused part of the pieces being welded. When melted with a specially coated electrode the molten metal is mixed with a filler that binds the two parts into a single unit. To join metals through electric arc welding the following equipment is necessary.