Spot welding, Other Engineering

Assignment Help:

In spot welding, the parts to be joined are normally over lapped. The work piece are clamped between two water cooled copper electrodes. On the passage of a high transient current, the interface melts over a spot and form the weld. The cooling at the electrode limits the size of the spot. A very high current is needed for a very short duration to complete the welding. The interfaces to be joined are initially cleaned by various methods, including scratch brushing and vapour decreasing. A spot weld normally contains some porosity at the weld centre, which unless excessive is harmless.

The spot welding process is difficult to use for highly conductive materials such as aluminum and magnesium. 


Related Discussions:- Spot welding

Calculate the density at maximum flow, (a)  A section of road has a free fl...

(a)  A section of road has a free flow speed of 55km/h and a jam density of 367 vehicles per kilometre. Assuming under a linear speed-density relationship, calculate the density at

Instruction set, compare zero- one- two- and three-address machines by writ...

compare zero- one- two- and three-address machines by writing programs to compute X=(A+B*C)/(D-E*F)

Flash in forging, Q. Explain the following terms.             ...

Q. Explain the following terms.             (i) Flash in forging.            (ii) Fullering and up setting in forging.            (iii) Trimming of

Aeroengine - linear blade cascade, A blade cascade is a row of evenly space...

A blade cascade is a row of evenly space yp dentical blades. Approximates to a turbomachinery rotor or stator if the radius the annulus is large compared with the bl the annulus is

P d c, what are clippers

what are clippers

Propeller governing mode, Propeller governing mode: The speed lever is ...

Propeller governing mode: The speed lever is placed in the high position. The engine is operating at 97 percent. As the power lever is advanced ahead of the flight idle deten

Fire precautions - fire protection engineering, Fire precautions - fire pro...

Fire precautions - fire protection engineering: Fire precautions include: Protecting escape routes in fire resisting construction, Providing fire doors between

Accelerated Slipstream, Does the accelerated slipstream create more lift on...

Does the accelerated slipstream create more lift on part of a wing behind the propeller of a multa-engine aircraft? If so, about how much % for an Air King b200? Also the V-22 O

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