Welding processes, Mechanical Engineering

Q. Show the Welding processes

The following welding processes are permitted:

Shielded Metal-Arc Welding (SMAW) - Do not use SMAW for the root pass of single side groove welds except for carbon steel.

Gas Tungsten-Arc Welding (GTAW).

Automatic Submerged-Arc Welding (SAW-AU):

a) The flux used shall be "neutral" and shall not contribute alloying elements to the weld.

b) The flux-wire combination used for production welding shall be the same brand name and type as used for procedure qualifications.

c) Maximum weld deposit per pass shall be 12.7 mm (1/2") for carbon steel (P-1) and 10 mm (3/8") for all other materials.

Flux-Cored Arc Welding (FCAW) will not be permitted unless otherwise authorised by the OWNER.

Gas Metal-Arc Welding (GMAW) shall be used only in spray transfer mode. Pulse arc is considered spray transfer. Spray transfer mode shall not be used for root pass.

The Short Arc transfer mode is acceptable for carbon steel materials up to and including 3/16 inch (5 mm) thick and for the root pass in carbon steel material of any thickness with the following provisions:

a) Vertical welding is done in the uphill progression.

b) The root pass is back-gouged.

c) GMAW-S is not used on branch connections, o-let, socket type welds, or pipe less than or equal to 3 inches (75 mm) OD.

Plasma-Arc Welding (PAW) for hard surfacing and overlaying.

Welding processes other than those listed above require specific approval by the OWNER and shall not be assumed as acceptable by the Seller during bid preparation.

Posted Date: 7/9/2013 12:43:31 AM | Location : United States

Related Discussions:- Welding processes, Assignment Help, Ask Question on Welding processes, Get Answer, Expert's Help, Welding processes Discussions

Write discussion on Welding processes
Your posts are moderated
Related Questions
Determine tension in the rope: An elevator cage of mineshaft, weighing 8KN when, is lifted or lowered by means of wire rope. Once man weighing 600N entered it and lowered wit

Under Damping If    the restoring force is larger than friction, and the oscillation is classified as under-damped. In this case,  ω  is real and behaves exactly like the solu

Determine the centroid of the area: Determine the centroid of the area OBDC Solution The trapezium area is divided in two simple areas,  (i)        A 1 = Rectangle

A plane wall (thermal conductivity = 10.2 w/m o c) of 100 mm thickness and area 3m 2 has steady surface temperature of 170 o c and 100 o c. Evaluate :- (i) The temperature

What are types of raft foundation? Define according to rigid mat deign. One of the common types of raft foundation is the flat concrete slab 0.75 to 2.00 m thick with a two way

Cylinder : As the name implies it is a cylindrical vessel or space in which the piston makes a reciprocating motion (forward and backward). The varying volume created in the cylin

Determine root of equation xe x = cosx by Muller's method. Solve the following equations by Matrix Inversion method.

You are required, as part of a small team, to design a remote controlled buggy that can be made to move forwards, backwards and from side to side. The basic buggy and motors are pr

Main Features of Laser Cutting Process   1) Laser cut kerf is very narrow resulting in material saving. 2) Has very narrow heat affected zone (HAZ) and therefore gives low