Projection Welders/Welding

(History / Definition / Principle of Projection Welders / Welding)

History: See history of spot welding. Projection welding comes after success of spot time but it's time of in use is unknown. Definition: Projection welding varies from spot welding in so far that the location of the weld nugget development is not determined by the electrodes but by the location of the projections. Principle: Projection welding works on the same principle of Joule E=IR2 (E= Energy, I= Current, R= Resistance) a low volt high current is passed through projection build up on work which heats the work that is clamped firmly between copper electrodes, Where projection on sheets are met to each other (R) is much more than other contacts, Hence much heat is produced on projection and it fuses, after a pre determined time current is stopped then fused metal solidifies and a proper joint build up under pressure of electrodes.

Technical Specifications:
Item Unit PJS50
Supply V 400 ± 10%
Phase Ph 2
Frequency Hz 50
Load KVA 50
Nominal Center  mm 255
Pillar X Hallow
Welding Curr. KA 15
Transformer X Water Cooled
Nominal Panel X DS33
Key Feature:- Multi Spot Welds Possible at same time.
Technical Specifications:
Item Unit PJS75
Supply V 400 ± 10%
Phase Ph 2
Frequency Hz 50
Load KVA 75
Nominal Center  mm 255
Pillar X Hallow
Welding Curr. KA 22
Transformer X Water Cooled
Nominal Panel X DS33
Key Feature:- Multi Spot Welds Possible at same time.
Technical Specifications:  
Item Unit PJS100
Supply V 400 ± 10%
Phase Ph 2
Frequency Hz 50
Load KVA 100
Nominal Center  mm 305
Pillar X Solid
Welding Curr. KA 30
Transformer X Water Cooled
Nominal Panel X DS33
Key Feature:- Multi Spot Welds Possible at same  time. 
Technical Specifications:
Item Unit PJS150
Supply V 400 ± 10%
Phase Ph 2
Frequency Hz 50
Load KVA 150
Nominal Center  mm 305
Pillar X Solid
Welding Curr. KA 45
Transformer X Water Cooled
Nominal Panel X DS33
Key Feature:- Multi Spot Welds Possible at same  time.
Technical Specifications:
Item Unit PJS200
Supply V 400 ± 10%
Phase Ph 2
Frequency Hz 50
Load KVA 200
Nominal Center  mm 305
Pillar X Solid
Welding Curr. KA 75
Transformer X Water Cooled
Nominal Panel X DS33
Key Feature:- Multi Spot Welds Possible at same  time.
Technical Specifications:
Item Unit PJR50
Supply V 400 ± 10%
Phase Ph 2
Frequency Hz 50
Load KVA 50
Nominal Center  mm 610
Throat Clearance mm 390
Pillar X Hallow
Welding Curr. KA 14
Transformer X Air Cooled
Nominal Panel X DS33
Key Feature:- Specially designed for kitchen accessories.
Comparison
Item Unit PJS50 PJS75 PJS100 PJS150 PJS200 PJR50
Supply V 400 ± 10% 400 ± 10% 400 ± 10% 400 ± 10% 400 ± 10% 400 ± 10%
Phase Ph 2 2 2 2 2 2
Frequency Hz 50 50 50 50 50 50
Load KVA 50 75 100 150 200 50
Nominal Center  mm 255 255 305 305 305 610
Pilar X Hallow Hallow Solid Solid Solid Hallow
Welding Curr. KA 15 22 30 45 75 14
Transformer X Water Cooled Water Cooled Water Cooled Water Cooled Water Cooled Air Cooled
Nominal Panel X DS33 DS33 DS33 DS33 DS33 DS33

Keywords : Projection Welding Machine,Projection welders used for Auto Parts and Kitchen Accessories.

Note
Welding current may differ from specified according to job shape and photograph show above are of optimize machines for a particular job these may differ from actual machine

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