welding (2)spot and projection welding

7/28/2019 Welding (2)Spot and Projection Welding

1/13

SPOTAND PROJECTIONWELDING


2/13

Types of Welding

Welding

Process

Arc Resistance Gas

Spot Seam Projection Flash


3/13

Spot Welding


4/13

SpotWelding...

In Spot Welding the pieces to be joined are

clamped between two electrodes under force,

and an electrical current is sent through them.

Force is applied before, during, and after

the application of current to prevent arcing at

the work piece.

In spot welding fusion of faying surfaces of alap joint is achieved at one location by

opposing electrodes
http://en.wikipedia.org/wiki/Spot_weldinghttp://en.wikipedia.org/wiki/Spot_welding


5/13

Spot Welding Machines


6/13

Advantages ofSpot Welding

Spot welding is quick and easy

No need to use any fluxes or filler metal

Multiple sheets joined together at the same time.

No dangerous open flame

Saves production costs.


7/13

Applications ofSpot Welding

Nuts & Bolts Join two Metal Sheets

Automobile Industry To make Batteries


8/13

Projection Welding


9/13

Projection Welding

In Projection welding size and shape of individual

welds are determined by the presence of projections,

embossments or intersections on the metals to be

joined.

Metals are heated and coalescence is achieved notthrough the use of an arc, but through the metals

resistance to electrical currents passing through them

as they are held together with pressure by electrodes.

In projection welding the pieces to be joined areclamped between two electrodes under force, ananelectrical current is sent through them.
http://en.wikipedia.org/wiki/Projection_weldinghttp://en.wikipedia.org/wiki/Projection_weldinghttp://en.wikipedia.org/wiki/Projection_welding


10/13

Projection Welding Machines

Capacitor Discharge Projection Welding Machines
http://www.artechwelders.com/products/capacitor-discharge-projection-welding-machines/http://www.artechwelders.com/products/capacitor-discharge-projection-welding-machines/


11/13

Advantages ofProjection Welding

Simultaneously we can make

any number of welds in heavier

materials easily.

Welding can be made in metals

that are too thick to be joined byspot welding.

Lower Electrode Maintenance.

Lower amount of current andpressure needs to joint metals.

Faster and Quicker and used in

mass production


12/13

Application ofProjection Welding

Diamond Segment Welding

Automobile Industry

Semiconductors

Fan Covers

Compressor Parts

Hollow Metal DoorsAuto Electricals


13/13

THANK YOU

Artech Welders Pvt Ltd.No. A- 16, H- Block, MIDC, Pimpri

Pune, Maharashtra - 411018, India

Phone : +(91)-(20)-27476160/27462772Mobile : +(91)-9822438782/9822069212

E-mail :[email protected]

www.artechwelders.com
http://www.artechwelders.com/http://www.artechwelders.com/http://www.artechwelders.com/http://www.artechwelders.com/

welding (2)spot and projection welding

Documents