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

Spray up method, Spray up method In a slight variation, to suit the ne...

Spray up method In a slight variation, to suit the necessity of bigger size parts the fibre resin and rovings are fed concurrently. The fibre rovings are fed via a chopper whe

Calculate the angular acceleration of the wheel, Calculate the angular acce...

Calculate the angular acceleration of the wheel: A locomotive wheel of radius r = 0.8 m is illustrated in Figure. At the given instant, the speed of the locomotive is 1.6 m/se

Motorcycle servicing , In motorcycle servicing we studied about various ser...

In motorcycle servicing we studied about various service tips for motorcycle servicing. These steps will ensure proper servicing of motorcycle and as a result customers will trust

Burner management - discrete controls for steam generators, Q. Burner Manag...

Q. Burner Management - Discrete Controls for steam generators? The burner management system shall control the generator operation during pre-purge, light off, normal operation,

Determine the rf on the scale, Determine the RF on the scale: A length...

Determine the RF on the scale: A length of 3 km on the ground is presented via 6 cm length on a map. Determine the RF on the scale on that it has been drawn.  RF = Length o

Two Stage Reciprocating Air Compressors, How does the Two Stage Reciprocati...

How does the Two Stage Reciprocating Air Compressor works?

Compton effect, Explain compton effect snd its significance

Explain compton effect snd its significance

Specific volume of the superheated steam - thermodynamics, Specific volume ...

Specific volume of the superheated steam: It is volume occupied by unit mass of superheated steam corresponding to given pressure of superheated steam generation. Superheated

Find out the reactions at hinge, Find out the reactions at hinge: A bo...

Find out the reactions at hinge: A board ABCD is held in position as shown in Figure by a cable BE and a hinge at A. If the weight of the board is 5 kN, find out the reactions

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