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
Schedule Evaluation Each continuations of a partial schedule that are produced in step 1 are ranked as per to their respective cost function. This cost function might be dissim

Q. Determine the proper torque values from the Flange? Determine the proper torque values from the Flange Closure Sheet. Apply the torque, using a hand torque-measuring wrench,

state the purpose of kleins construction

Corporate level - Safety Organization This is a corporate level and there should be a company director which is engaged in formulating safety policies at corporate level. The

Heat Treatment of Stainless Steels: Stainless steels, as other steels, react to heat treatments over broad range. They are subjected to one or more of the given heat treatmen

Collapsible Soils and Subsidence There are soils which are quite stable when dry and they show large volume changes on wetting under load. Examples of  these soils are loess (w

Q. What is Coating Thickness? The dry thickness of the coating shall be checked by using a "micro test" magnetic gauge or approved equal which has been properly calibrated, at

Determine the minimum critical Euler axial compression force,  Pcr and the minimum critical Euler axial compression stress, cru, for the column below which is pinned at the top and

Communication Protocols Applicable in Holonic Manufacturing System Communication amongst agents plays an essential role in the Holonic manufacturing system. Exchange of informa

Pola r Modulus(Z p ):   It is the ratio of polar moment of the inertia to outer radius. Z p = J / R Polar Modulus of solid body ( Z p ) =[  ?/32. D 4 ]/ D