Define heat for electrical resistance welding, Mechanical Engineering

Assignment Help:

Q. Define Heat for electrical resistance welding?

The heat, H for electrical resistance welding is generated by passing a large electrical current ( of the order of 3000 to 100,000 Amps with a voltage between 1 and 25 volts) through two pieces of metal that are touching each other.

H=I2 RT

Where H is the heat generated indicated in joules,

I is the current in root-mean-square amperes, R is the resistance in ohms,.

T is the time (from fraction of a second Tc a few seconds) of current flow through the pieces to be welded.


Related Discussions:- Define heat for electrical resistance welding

Calculate the diameter of the single pipe, a) Three pipes of lengths 800m, ...

a) Three pipes of lengths 800m, 400m, 500m and of diameter 500mm, 400mm and 300mm respectively are connected in series. Pipes are to be removed by a single pipe of length 1700m. Ca

Access and maintenance for pumps, Pumps should be grouped together with goo...

Pumps should be grouped together with good maintenance access to the motor, and good personnel access to seals and suction / discharge valves. Maintenance access should allow for r

Properties of aluminium alloys, Properties of Aluminium Alloys: Among...

Properties of Aluminium Alloys: Among the different properties of aluminium alloys given are notable as: (a) Low density as 2.7 gm/cc (b) Elevated electrical and therma

Graphics, offset method to draw parabola

offset method to draw parabola

Evaluation the enthalpy of steam - thermodynamics, Evaluatio n the Enthalp...

Evaluatio n the Enthalpy of Steam: Let h f   = Heat of liquid or sensible heat of water in KJ/kg h f g   = Latent heat of vaporization of steam in KJ/kg t

What is indirect extrusion, Q. What is Indirect extrusion? In indirect ...

Q. What is Indirect extrusion? In indirect extrusion, also known as backwards extrusion, the billet and container move together while the die is stationary. The die is held i

Kinematics of machine, what is the cross head velocity in slider crank mech...

what is the cross head velocity in slider crank mechanism.

Bodies stick together after collision the heat liberated, Two bodies of mas...

Two bodies of mass 1 kg and 2 kg move towards each other in mutually perpendicular direction with velocities 3m/s and 2 m/s respectively. If the bodies stick together after collisi

Classification of power sources according to construction, CLASSIFICATION O...

CLASSIFICATION OF POWER SOURCES ACCORDING TO CONSTRUCTION & DESIGN To give the desired output a power source may be constructed with different components. Therefore, a classifi

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