Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
SHIELDING GAS
The primary function of the shielding gas is to exclude the atmospheric air from the arc zone. However, the shielding gas has significant influence on the arc characteristics, mode of metal transfer, speed of welding, cleaning action and bead geometry. Pure argon is used only for welding of non ferrous metals. However, pure argon shielding on ferrous alloys causes an erratic arc and a tendency for undercut to occur. Hence, for welding of ferrous alloys, either CO2 or argon + CO2 gas mixture is used. Addition of 1 to 5 % O2 or 3 to 25 % CO2 produce a noticeable improvement in arc stability and freedom from undercut. Argon rich gas mixtures produce a finger shape penetration whereas CO2 shielding gas produces wider and deep penetration.
Interesting history of IGES: In the year of 1979, events took place that catalyzed the CAD vendor and user community to make the first national standard for CAD data exchange.
A shaft is hinghed by two bearings placed 1.0 m apart. A 600mm diameter pulley is mounted at a distance of 300 mm to the right of left hand bearing and this operates a pulley direc
(a) Briefly explain the following performance parameters of I.C. engine : (i) Indicated men effective pressure (Pim) (ii) Brake power (BP) (iii) Indicated power (IP) (
Your team has been charged with creating the pumping and piping system to supply cool water to the condenser, E-310, for the newly installed distillation column T-304 running at 12
Evaluate Young modulus of elasticity - Ultimate stress: Q: The following observations were made during tensile test on mild steel specimen 40 mm in diameter and 200 mm long
Difference between path function and point function
example on operation sheet?
Find out change in length of circular bar of uniform taper Sol.: The stress at any cross section can be found by dividing load by area of cross section and extension can be
Consider the frictionless piston-cylinder set-up with a linear spring as is shown below. The cylinder has an internal cross-sectional area of AC = 0.1 m2. Distances y 1 and y 4
1. (a) Sketch frequency-response curves for a damped single degree of freedom system subjected to a harmonic excitation under three different damping ratios. The system has a natur
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd