Effect of process parameters in GMAW

                   In this presentation we see about influence  of process parameters in GMAW weld bead shape and productivity. In this presentation We discuss some influencing parameters. they are

–Welding current
–Electrode size

–Arc voltage

–Arc travel speed

–Electrode extension

–Electrode position

–Welding position

Shielding Gases used in arc welding

        In this presentation we seen about purpose of Shielding Gases used in arc welding and selection of shielding gases based on external parameters like weld metal thickness, penetration depth.

GMAW WELDING

GMAW ( Gas Metal Arc Welding) or MIG ( Metal Inert Gas Welding ) or MAG ( Metal Active Gas welding )  is the one of the arc welding types. In GMAW process shielding gas is used instead of electrode flux. this presentation will explain about this process.

Arc welding Consumables

This presentation explain the different types of consumables used in arc welding.

GAS WELDING

This presentation explain about gas welding process, equipment used in the gas welding, types of flames produced during welding, reason to the flames, advantage and disadvantage of each flame.

Regions in fusion weld zone

Regions in fusion weld zone are explained in the presentation.

TYPES OF WELDING ARC & ARC INITIANTION METHODS

Types of the welding arc and arc initiation methods used in the welding processes are explained in this presentation.

WELDING ARC PHYSICS

SMAW VARIENTS

SMAW - Shielded Metal Arc Welding process is the one of the basic arc welding process. This presentation will explain varients of the SMAW process and advantages, disadvantages of the each process.

Joining of magnetic materials

Ferro magnetic materials (iron, nickel, cobalt)  are considered as magnetic materials. Magnetism and its types, reason for magnetism, problems encountered during welding in magnetic materials, remedies for the problems are explained in the below presentation.

SOLDERING

  Soldering is a process in which two or more items (usually metal) are joined together by melting and putting a filler metal (solder) into the joint, the filler metal having a lower melting point (below 450°C) than the adjoining metal. Soldering differs from welding in that soldering does not involve melting the work pieces.

HOT CRACKS & COLD CRACKS

A line on the surface of METAL or WELDED REGION along which it has split without breaking into separate parts. Crack is consider as most severe defect among  WELD DEFECTS. This presentation is define and explain  the types of cracks, crack promoting factors .

FRACTURE TOUGHNESS TESTING

                                                    FRACTURE TOUGHNESS TESTING

 Fracture toughness is a quantitative way of expressing a material's resistance to brittle fracture when a crack is present. This presentation gives the detail about how to calculate the fracture toughness.

CREEP

                                                              CREEP
   Creep is the tendency of a solid material to move slowly or deform permanently under the influence of mechanical stresses.Creep is more severe in materials that are subjected to heat for long periods, and generally increases as they near their melting point.

NITRIDING

NITRIDING

             Nitriding is one of the heat treatment method. The main objective of this method is case hardening of the steels. Below presentation is explain the nitriding process and types of layer presented in case harded metal surface.

DUPLEX STAINLESS STEEL

CORROSION AND IT'S TYPES

WELDING - DEFINITION & TYPES

WELDING

DEFINITION

         Welding is the process of joining two similar (or) dissimilar materials by the application of heat and with (or) without application of pressure and with (or) without the use of filler materials.

WELDING TYPES

Welding process types based on heat generation :

        Welding process are classified based on the method of heat generation and welding process are grouped in to six main groups. they are showed in the below diagram

welding process types based on filler material used: