Shielding gas-argon - hydrogen mixtures, Mechanical Engineering

Assignment Help:

Argon - Hydrogen Mixtures


Argon - hydrogen mixtures are employed in special cases, such as mechanised welding of light gauge stainless steel tubing, in which the hydrogen does not cause adverse metallurgical effects such as porosity and hydrogen induced cracking. By Increased  of welding speeds can be achieved in almost direct proportion to the amount of hydrogen added to argon because of the high  arc voltage. However, the amount of hydrogen that can be added varies with the metal thickness and type of joint for each particular application. Excessive hydrogen will cause porosity. Argon - hydrogen mixtures are limited to use on stainless steel, nickel - copper and nickel base alloys. The most commonly used argon - hydrogen mixture contains 15 % hydrogen which is used for mechanised welding of tight butt joints in stainless steel up to 0.062 in. (1.6 mm) thick. For manual welding,a hydrogen content of 5 % is sometimes preferred to obtain cleaner welds. 


Related Discussions:- Shielding gas-argon - hydrogen mixtures

Calculate the maximum and minimum stress, Calculate the maximum and minimum...

Calculate the maximum and minimum stress: A cast iron column of 200 mm diameter carries a vertical load of 400 kN, at a distance of 50 mm from the centre. Calculate the maximu

Solid modeling and design, You are an engineer for WhyShopHere Toys. You ha...

You are an engineer for WhyShopHere Toys. You have been tasked with the following: Design a child's toy to provide food for fish in an aquarium. The toy should take the fo

Describe inverse reflection, Objective type/ short-answer type questions. ...

Objective type/ short-answer type questions. Describe the following :- a. Illustrate what do you mean by CAD/ CAM b. Discuss the storage device used in computer. c. Wha

Stress plots, Problem:   The following machine component is loaded as s...

Problem:   The following machine component is loaded as shown.  It is fabricated from Al 6061-T6.   Determine the analytical solution to this problem and compare result

How to find damping constant, m=4.9Kg, K=3694 N/m, x=0.013m. I have this mu...

m=4.9Kg, K=3694 N/m, x=0.013m. I have this much details, now I want to find the damping constant ''b''. I hv tried so much, but this question needs damping ratio ''zeta'' or damped

Control , hey i really need someone to help doing my control course work as...

hey i really need someone to help doing my control course work asap cuse it is due sunday it is about Control of water level in a nonlinear ‘V’ shaped tank

Helix angle, what is helix angle and how to determine it?

what is helix angle and how to determine it?

Determine the workdone by the fluid on the piston, Explain Zeroth law and 1...

Explain Zeroth law and 1 st law of thermodynamics. Describe Internal energy and Enthalpy. What is a PMMFK. Give the expression for reversible workdone in a thermodynamic system

co2 welding, CO2 Welding CO2 Welding is a variation of GMAW. Here the ...

CO2 Welding CO2 Welding is a variation of GMAW. Here the inert gas is replaced by gas mixtures or carbon dioxide, which are chemically active. The carbon dioxide decomposes in

Cam-basic components of engine , Cam: This is an integral part of camshaf...

Cam: This is an integral part of camshaft. A cam is designed in such a way as to open or close the valves at the correct timing and keep them open for the necessary duration.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd