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

Explain parts of the machine of radial drilling, Major parts of the machine...

Major parts of the machine of Radial drilling machine Column The column is cylindrical in shape and built rugged and solid. The column supports the head and the sleeve or

Evaluate the motion of the system, Evaluate the motion of the system: ...

Evaluate the motion of the system: If in above Example, the block A is resting on an inclined plane at 45 o to horizontal as illustrative in Figure, find out the motion of th

Explain double bolting, Q. Explain Double Bolting? Where low strength b...

Q. Explain Double Bolting? Where low strength bolts must be used, initial bolting with higher strength low temperature bolts may be necessary to minimize accumulative strain an

Determine the equivalent evaporation, Illustrate how the efficiency of Rank...

Illustrate how the efficiency of Rankine Cycle can be improved by the use of Regenerative and Reheat heating. (b) During a test on boiler trial the following data were obtained

Principal planes and principal stresses, Principal Planes and Principal Str...

Principal Planes and Principal Stresses: Define the Principal Planes and Principal Stresses. Sol.: When an element in strained body is under action of plane stresses, it i

Superheated steam - thermodynamics, Superheate d Steam: When the dry ...

Superheate d Steam: When the dry saturated steam is heated further at constant pressure, the temperature of it rises up above the saturation temperature. This rise in tempera

Multimeter-electrical instruments , Multimeter: This is used to measure vo...

Multimeter: This is used to measure voltage, current and resistance of an electrical circuit (Figure). Figure: Multimeter

Material science.., Briefly explain the process of age hardening in metals

Briefly explain the process of age hardening in metals

Final project , Hi ... I have a final project I need to finish it soon abou...

Hi ... I have a final project I need to finish it soon about 3 weeks from now ... to design any machine by the Solidworks program .... please feed me back if you can .. thank you

Simulate the compression test, This assignment will simulate large deformat...

This assignment will simulate large deformations (nonlinear geometry) and occurrence of necking and buckling due to static tensile and compressive loading of a given elastic-plasti

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