Explain flash butt welding, Civil Engineering

Assignment Help:

Q. Explain Flash Butt welding?

In this process the ends of two rails are kept at fixed distance apart and a mould (designed to suit the rail section ) is fitted on. The rail ends are then heated to yellow red temperature with a blowlamp. A swiveling type crucible containing iron oxide and aluminum powder to match the metallurgical composition of the rails is then ignited and the molten metal is poured into the mould so that the gap between the rail ends is filled up with over flow on all sides. The mould is then removed and excess metal is chipped off from the railhead while still hot. Later it is filed to railhead profile.

Normally it takes 45 minutes to weld a joint but by quick thermit process it can be done in 15 minutes. The joint can be brought into use immediately after welding.


Related Discussions:- Explain flash butt welding

Explain interim inspection - underwater inspection of bridge, Explain the I...

Explain the Interim inspection - underwater inspection of bridge An interim inspection is an inspection scheduled at the discretion of the engineer. An interim inspection is us

Diving operation - preparation for underwater inspection, Define Diving Ope...

Define Diving Operation - Preparation for underwater inspection? Use of experienced divers trained and screened by a reputed commercial diving school is critical for successful

Contour interpolation, given A,B,C,and D are four plotted points at 2 centi...

given A,B,C,and D are four plotted points at 2 centimeter apart and their ground reduced levels are 57.5 meter 63.2 meter 68.2 meter and 59.2 respectively.it is required to draw co

Determine about the statement - failure at cracking load, Determine about t...

Determine about the statement - Failure at Cracking Load This brittle mode of failure is likely to occur in those pre-stressed elements that are concentrically pre-stressed wit

Determine the required stirrup size and spacing requirement, A rectangular ...

A rectangular concrete beam is subjected to a factored design shear force of 200 kips.  For the beam shown below, determine the required stirrup size and spacing requirement. H = 3

Underwater inspection procedures - inspection of bridge, Explain the Underw...

Explain the Underwater inspection procedures - inspection of bridge? Under-water bridge inspection, especially the initial inspection, requires careful planning to ensure that

Third law of thermodynamics, Is there any application by using the third la...

Is there any application by using the third law of thermodynamics. A Actual application without explained the calculation

Precaution of damp, i need simple ans for this question tell me precaution ...

i need simple ans for this question tell me precaution of dampness

Physical evaluation of food grains, Q. Physical evaluation of food grains? ...

Q. Physical evaluation of food grains? Food grains are judged for quality by their physical, chemical and microbiological examination. The physical examination includes chec

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