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

Functions of the piston ring , Functions of the Piston Ring To for...

Functions of the Piston Ring To form a seal for high pressure gases from the combustion chamber, against leak into the crankcase. To provide sufficient lubricating oi

Governor, when the governor is connected to a engine its sensitiveness form...

when the governor is connected to a engine its sensitiveness formula change,why?

Explain about the footings how it is transmit loads, Explain about the foot...

Explain about the footings how it is transmit loads. Footings are generally the lowermost supporting part of the structure known as sub-structure and are the last structural e

Jet pump, full detail of jet pump nozzle design

full detail of jet pump nozzle design

Wheels of motorcycle, Wheels:  The wheel, along with the tyre has to take ...

Wheels:  The wheel, along with the tyre has to take the vehicle load, provide a cushioning effect (to protect against force or shock) and cope with the steering control. The wheel

Develop-implement method to identify numerically equivalent, For example, i...

For example, if one were provided with the set [3 1 3 -4 -6], the resulting answers would be [3 1 -4], [3 1 -4], an [3 3 -6], as these are the three sets of three values which sum

What are the basic different air-fuel mixture, Describe carburetion. What a...

Describe carburetion. What are the basic different air-fuel mixture on which an engine can be operated ? Write a short note on sterling cycle. In an engine working on inlet pres

Classification of arc welding power sources, CLASSIFICATION OF ARC WELDING ...

CLASSIFICATION OF ARC WELDING POWER SOURCES As we have know, different  welding processes require different operating conditions & the power sources are also necessarily differen

Find out the forces in cantilevers frame, Find out the forces in cantilever...

Find out the forces in cantilevers frame: Find out the forces in the members of the cantilevers frame by the method of sections. Solution Let the equilibrium of the fr

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