Heat distribution in spot welding, Mechanical Engineering

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.

Posted Date: 9/17/2012 2:59:52 AM | Location : United States







Related Discussions:- Heat distribution in spot welding, Assignment Help, Ask Question on Heat distribution in spot welding, Get Answer, Expert's Help, Heat distribution in spot welding Discussions

Write discussion on Heat distribution in spot welding
Your posts are moderated
Related Questions
The Classical Job Shop Scheduling Problem (Jsp) A  job  shop  scheduling  problem  occupies  the  determination  of  beginning  time  for  all operations in a finite and specif

WELDING VARIABLES The following major process variable play an important role in shaping the weld bead and the resultant weld metal in submerged arc welding: a. Welding cu

Figure shows a Warren girder consisting of seven members each of 3 m length freely supported at its end points. The girder is loaded at B and C as given. Determine the forces in al

You are required, as part of a small team, to design a remote controlled buggy that can be made to move forwards, backwards and from side to side. The basic buggy and motors are pr

The transmission output shaft for a heavy goods vehicle can withstand a safe working shear stress of 54MPa. Its outside diameter is 54mm and its internal diameter is 48mm. Calculat

Differences between torque and torsion: Give differences between torque and torsion. List a few examples of torsion in the engineering practice. Sol.: When structural or

a) You have been assigned to design a robotics spot welding experiment for low carbon steel sheets. You found an experimental power source for spot welding process which is designe

Introduction to Computer: This covers the major hardware features of computer graphics systems such as video monitors, keyboard, hard copy devices, and other devices for graph

Engine oil replacement Motorcycle is thoroughly drained by kicking the vehicle several times. Inspect the drain bolt washer and replace if necessary. Tighten the drai

Determine the work done per minute by a punch tool making 20 working strokes min when a 30 mm diameter hole is punched in 5 mm thick plate with ultimate shear strength of 450 MPa i