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

Analyze motion of the two bodies connected by string, Analyze motion of the...

Analyze motion of the two bodies connected by string: Analyze motion of the two bodies connected by string one of which is hanging free and other lying on smooth inclined pla

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

MOS, limitations of euler''s theory

limitations of euler''s theory

Differentiate between dynamometer and brakes, Can you Differentiate between...

Can you Differentiate between : Dynamometer and Brakes. Absorption Dynamometer and Transmission Dynamometer.

Locomotive boiler, LOCOMOTIVE BOILER: It is horizontal, natural cir...

LOCOMOTIVE BOILER: It is horizontal, natural circulation, fire tube boiler. It can generate steam at the rate of 7000 kg/hr. at pressure of up to 2.5 Mpa. Earlier it was us

DOMESTIC HOT WATER, HOW TO SIZE RECIRCULATION HOT WATER PUMP?

HOW TO SIZE RECIRCULATION HOT WATER PUMP?

Introduction to motorcycle repairing , INTRODUCTION: Here, we shall study ...

INTRODUCTION: Here, we shall study about the repairing of motorcycle. Automobile technicians should acquire basic troubleshooting and repairing skills for attending various breakd

Closed system - thermodynamics system, Closed System: The system tha...

Closed System: The system that can exchange energy with the surrounding but not the mass. The quantity of matter hence remains fixed. And the system can be described as cont

Basic s.i. units and its derived unit - mechanics, Basic S.I. Units and its...

Basic S.I. Units and its derived unit: S.I. stands for "System International Units". There are three quantities in the Standard International Systems as concerned to Mechanics

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