Heat distribution in spot welding, Mechanical Engineering

Assignment Help:

Heat distribution in spot welding

Besides the resistance at the interface, there are six other resistance through which the same welding current is passed. They are:

  1. Resistance of the upper electrode - R1
  2. Resistance of the upper electrode metal contact - R2
  3. Resistance of the top metal - R3
  4. Resistance of the bottom metal - R4
  5. Resistance of the metal - bottom electrode contact - R5
  6. Resistance of the bottom electrode -R6


Therefore, some amount of heat is generated in these regions also (equal to I2 x R x t).

The effective heat that is utilised is that due to the resistance at the metal - metal interface only, the others being losses.

Among the above six resistance, R2 and R5 are high compared to the other four. These two can be minimised by properly choosing the electrode pressure and cleaning the surface well.


Related Discussions:- Heat distribution in spot welding

Electrical technology, Hi there could I please get a quote for the attached...

Hi there could I please get a quote for the attached Electrical assignment please. Particular attention needs to be taken in terms of the instructions

Soldering, Soldering This is a group of join process, which generates, co...

Soldering This is a group of join process, which generates, coalescence of materials by heating them to a suitable temperature and by using a filler metal having a melting point

Explain importance of continuum in thermodynamics, What is the importance o...

What is the importance of the concept of continuum in engineering thermodynamics. Sol: Tough the simplification of matter into atoms, electrons, molecules, and so on, is very c

Determine lift coefficient, A thin spanwise symmetrical wing has an aspect ...

A thin spanwise symmetrical wing has an aspect ratio of 10 and a straight edges with  taper ratio (tip chord / root chord) of 0.8 and root chord of 1 m. This wing does not have geo

Describe root-finding techniques, In mechanics, stress is a measure of the ...

In mechanics, stress is a measure of the internal forces acting within a deformable body. Quantitatively, it is a measure of the average force per unit area of a surface within the

Determine the initial radius of curvature, Determine the initial radius of ...

Determine the initial radius of curvature:  A carriage spring, defiantly loaded and simply supported at its ends, has 12 steel plates each 60 mm wide by 6 mm thick. If the lon

First law of thermodynamics, common formula for first law of thermodynamics...

common formula for first law of thermodynamics #Minimum 100 words accepted#

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