Principle of flash welding process

Flash welding is the another kind of butt welding process. This is different from other welding process is the arcing action, the heat is being generated at a number of points by a series of tiny arcs. The works does not coming into actual contact until the final forging pressure is applied. This welding process can be carried out in another theory that very light contact does occur at number of points. Such this a very small area contact each other face. Very intense heating takes place and causes melt the metal. After current applied, vaporization takes place between the metal joining portion. The liquid metals are flowing due to capillary action. At the

same time the final mechanical forging pressure is applied, then welding current supply is cut off. This entire operation is performed automatically. The heating effect is generally produced by the electrical resistance at the joint face. Flush welding process is very quick welding process than butt welding process. Due to less time radiation losses, relatively less current is required and a smaller volume of metal is heated. The principle of flush welding diagram is shown in the bellow picture.

Principle diagram of Flash welding

Some important factors for flush welding:

  1. Work pieces must be correctly clamped with some special type of jig.
  2. The flushing distance and upset distance must be correctly set.
  3. Rate of application of upset pressure must be very rapid indeed.

Application of flash welding

 

 

Home

Link

Site map

Contact Us

 

Gas welding

Air acetylene welding

Oxy-acetylene welding

Oxy-hydrogen welding

Pressure gas welding

Arc welding

Carbon arc welding

TIG welding

MIG welding

Submerged arc welding

Shielded metal arc welding

Plasma arc welding

Flux cored arc welding

Stud arc welding

Electro slag welding

 

Resistance welding

Spot welding

Seam welding

Percussion welding

High frequency welding

Projection welding

Resistance butt welding

Flash butt welding

 

Solid state welding

Friction welding

Cold welding

Ultrasonic welding

Hot pressure welding

Diffusion welding

Forge welding

Explosive welding

 

Radiant energy welding

Laser beam welding

Electron beam welding

 

Thermo-chemical welding

Thermit welding

Atomic welding

 

Brazing

Soldering

 

Welcome

to

 www.typesofwelding.net

 

Flash Weld Process

Flash Welding

 

                                                 ©  Copyright 2010-2012  www.typesofwelding.net  Flash Welding

     Home       Link     Link 1     Link 2     Site map       Contact Us

    Spot Welding    Seam Welding     Butt Welding     Flash Welding     TIG Welding     MIG Welding     Ultrasonic Welding

    Plasma Welding     Laser Welding     Stud Welding     Arc Welding     Oxy-acetylene Welding     Air-acetylene Welding

    Oxy-hydrogen Welding    Pressure Gas Welding     Brazing      Soldering

 

Classification of welding

Effect of welding speed

Welding defects

Types of welding joints

Welding position

Welding electrodes

Types of welding flame

Welding flux

Welding techniques

Welding symbol

Welding edge preparation

Advantages of welding joints

Thermal properties of metal

Welding safety

Types of welds