FLOW PROCESS CHART FOR MANUFACTURING
OF COIL SPRINGS
Raw Material
Packing
Final Painting
End Tapering
Load Deflection
Testing
Pre Load
Testing
Bar Heating
(For LHB Spgs)
(For ICF Spgs)
LHB Spgs
ICF Spgs
Coiling
Primer Painting
Quenching
LHB Spgs
Tempering
Scragging
ICF Spgs
End
Grinding
Shot
Peening
Crack
testing
Phosphating
(for LHB spgs.)