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SPOT AND PROJECTION
WELDING
Types of Welding
Welding
Process
Arc Resistance Gas
Spot Seam Projection Flash
Spot Welding
Spot Welding...
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
a lap joint is achieved at one location by
opposing electrodes
Spot Welding Machines
Advantages of Spot 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.
Applications of Spot Welding
Nuts & Bolts Join two Metal Sheets
Automobile Industry To make Batteries
Projection Welding
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 not
through 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 are
clamped between two electrodes under force, anan
electrical current is sent through them.
Projection Welding Machines
Capacitor Discharge Projection Welding Machines
Advantages of Projection 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 by
spot welding.
 Lower Electrode Maintenance.
 Lower amount of current and
pressure needs to joint metals.
 Faster and Quicker and used in
mass production
Application of Projection Welding
Diamond Segment Welding
Automobile Industry
Semiconductors
Fan Covers
Compressor Parts
Hollow Metal DoorsAuto Electricals
THANK YOU
Artech Welders Pvt Ltd.
No. A- 16, H- Block, MIDC, Pimpri
Pune, Maharashtra - 411018, India
Phone : +(91)-(20)-27476160/27462772
Mobile : +(91)-9822438782/9822069212
E-mail :sales@artechwelders.com
www.artechwelders.com

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Spot and Projection Welding

  • 2. Types of Welding Welding Process Arc Resistance Gas Spot Seam Projection Flash
  • 4. Spot Welding... 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 a lap joint is achieved at one location by opposing electrodes
  • 6. Advantages of Spot 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. Applications of Spot Welding Nuts & Bolts Join two Metal Sheets Automobile Industry To make Batteries
  • 9. 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 not through 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 are clamped between two electrodes under force, anan electrical current is sent through them.
  • 10. Projection Welding Machines Capacitor Discharge Projection Welding Machines
  • 11. Advantages of Projection 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 by spot welding.  Lower Electrode Maintenance.  Lower amount of current and pressure needs to joint metals.  Faster and Quicker and used in mass production
  • 12. Application of Projection Welding Diamond Segment Welding Automobile Industry Semiconductors Fan Covers Compressor Parts Hollow Metal DoorsAuto Electricals
  • 13. THANK YOU Artech Welders Pvt Ltd. No. A- 16, H- Block, MIDC, Pimpri Pune, Maharashtra - 411018, India Phone : +(91)-(20)-27476160/27462772 Mobile : +(91)-9822438782/9822069212 E-mail :sales@artechwelders.com www.artechwelders.com