Arc strikes-metallurgical defects, Mechanical Engineering

Assignment Help:

Arc strikes

Represent any localised heat affected zone caused by an arc. Arc strike tends to produce hardening particularly in high carbon steels and alloy steels. Grinding of cross section of such arc strike points show without exception, the occurrence of untempered martensite with a very high hardness and often cracks are present. At sudden st resses, at low temperature, these places can easily serve as initiation point for brittle fracture. By giving proper instructions to a welder and by good house keeping this can be avoided. By dressing up the area, the ill effects are removed.


Related Discussions:- Arc strikes-metallurgical defects

What is a machine shop, A facility that uses machines to fabricate devices ...

A facility that uses machines to fabricate devices from stock raw materials or to change mechanisms based upon given specifications. Also, know as "Back" Shops. The common machi

Stress, Difference between direct and shear stress

Difference between direct and shear stress

What is metal working processes, Q.What is Metal working processes? Met...

Q.What is Metal working processes? Metal working processes are processes used to produce wrought products. These product include angles, channels, I-beams, round, squar

Layout studies and analyses, Layout design development is supported by a nu...

Layout design development is supported by a number of studies and reviews, including: • Hazard identification (HAZID Study) and risk assessments - both qualitative and quantita

Impulse- momentum - work and energy, Impulse, Momentum, Work and Energy: ...

Impulse, Momentum, Work and Energy: As a part of summary, you can remember various important principles in terms of following equations.  (i)        Impulse-Momentum equati

Steps involved for method of section, Step s Involved for Method of Sectio...

Step s Involved for Method of Section: The different steps involved are stated below: (1) First find out support reaction by using equilibrium conditions. (2) The truss

Airport layout - planning a new airport, Airport Layout: The main com...

Airport Layout: The main components of an airport are: (a)        Runways (b)       Taxiways (c)        Apron (d)       Terminal area (i)        Terminal build

Find the required plastic moment of resistance, For the collapse loads indi...

For the collapse loads indicated in Figure Q3, find the required plastic moment of resistance (M p ). The frame members have varying plastic moments of resistance as indi

Determine the smallest increment of strain hat, A 16-bit A/D board is arran...

A 16-bit A/D board is arranged to accept voltage signals ranging from -5V to +5V.  The A/D board is used to monitor the output from the Wheatstone bridge shown below.  The strain g

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