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

Introduction to welding processes, Welding is a material joining process us...

Welding is a material joining process used in making welds and a weld is a localised coalescence of metals or non metals produced either by heating the materials to suitable temper

Estimate the machining time, Estimate the Machining Time A hollow work...

Estimate the Machining Time A hollow workpiece of 60 mm outside diameter and 150 mm length is held on a mandrel among centers and turned all over in 4 passes. If the approach

Explain extension of screw conveyor by hydraulic cylinder, Explain Extensio...

Explain Extension of screw conveyor by hydraulic cylinder "Extension of screw conveyor with the help of linkage arrangement by hydraulic cylinder and hinged joint" Procedur

Refractoriness, Refractoriness The capability of a material to withstan...

Refractoriness The capability of a material to withstand the action of heat devoid of appreciable deformation of softening is submitted to as refractoriness. Such property is m

Evaluate the effects at certain instant, The turbine rotor of ship of mass ...

The turbine rotor of ship of mass 6000Kg has a r of Gyration 50cm. It moves at speed of 1820rpm clockwise when looking from the rear. Evaluate the effects set up:- 1) If the shi

Reactions at grouted end of cantilever beam, Reactions at grouted end of ca...

Reactions at grouted end of cantilever beam: Q: Find reactions at grouted end of cantilever beam shown in figure given below     Draw free body diagram of the beam

Determine the percentage increase in power possible, An open belt connects ...

An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of Cap are 160 o and 210 o . The smaller pulley runs at 200 r.p.

Determine the width and depth of the beam, Determine the width and depth of...

Determine the width and depth of the beam: A timber beam of rectangular section is only supported over a span of 5 m. It carries an uniformly distributed load of 15 kN/m over

Find out the smallest force, Find out the smallest force: A block weig...

Find out the smallest force: A block weighing 800 N is raised up with the help of two 6o wedges B and C of negligible weights as illustrated in Figure. If the coefficient of s

SFD AND BMD, what is SFD and BMD? EXPLAIN

what is SFD and BMD? EXPLAIN

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