SHREE SPHEROTECH Pvt. Ltd.
REPORT No/ACTION No :- VED-1
CORRECTIVE ACTION REPORT
DATE :- 11.06.2019
D1) Form CFT
Team Leader VSP Team members: ABP,Vhanugare, SSK,
D2) Problem statement
Part
Part number :- 006014897V1 Oil pan 3DI Quantity :- 25 Nos
Description :-
Customer :- Ved Industries
Problem :- Shrinkage Defect observed after m/cing in dowel loaction.
D3) Background of the problem / Root Cause analysis
Why 1 : Shrinkage observed after m/cing in dowel loaction.
Why 2 : Improper feeding of metal to casting.
Why 3 : High Pouring Temperature.
Why 4 :
Why 5 :
D4) Containment Action(s)
Sr. No. Action Resp. Target
1 Scrap all the castings SSK WEE
D5) Identify and verify Root cause(s) [ Refer ANNEXURE]
Sr. No. Root Cause(s)
1 Pouring temperature is high i.e. 1390-1410C
2
D6) Corrective Action(s)
Sr. No. Corrective Action Resp. Target
Melting
1 Decrease pouring temperature by 20 C i.e maintain pouring temp between 1370-1390 C 28.06.2019
Supervisor
Melting
2 Increase C% in composition - maintain 3.50% in bath. 28.06.2019
Supervisor
D7) Implement Preventive action / Standarisation
Sr. No. Preventive Action Resp. Target
1 Maintain above range of pouring temp. for 4DI oil Pan. SSK 14.06.2019
D8) Results after corrective and preventive actions:-
Sr. No. Heat No./ Date Qty. Poured Qty. Rej. Defect Wise Qty. Remarks
1 28.06.2019 80 -- -- Found Level 1 shrinkage in RT
2 No shrinkage rejection found after m/cing
3
Related Document Updation
Process Flow FMEA Review Lists Quality Manual
Drawing PPAP Procedure Poka-Yoke
Work Instruct. Control Plan Melting CP Formats Other Melting history card
Prepared by: SSK Approved by: SDV
Similar process/ similar item identified (if any):
SSPL/QA/F/
ANNEXURE
Man :- Machine :- Material :-
Jolt & Squezz time - low Soft ramming Any condition that permits excessive moldw
Careless charging or weighing Low green compressive strength Soft ramming
Pouring too hot and/or too cold Wrong composition High green deformation Low green compressive strength
Intrupted pouring Cracked molds Chemical composition unsuited for section involv High green deformation
Interrupted pouring Runouts Low carbon High hot deformation
Slow or fast pouring Run-in (shellcores) High temperature metal Wet sand
Improperly clamped molds Careless charging or weighing
Wrong composition
High temperature metal
Shrinkage .
Insufficient cope height
Flask too small
Improperly fitted jackets
Gates and risers not promoting progressive solidification
Isolated heavy sections which cannot be fed Insufficient number and/or improperly attached gates and risers
Inadequate or too large fillets Risers too small
Insufficient area for feeding or chilling isolated sections Improper ratio of riser neck to casting size
Abrupt change in section size Large ingates
Geating system Runouts
Incorrect pattern dimensions resulting in thin or heavy fails to feeding of metal to casting Lack of fillets
Insufficient area for feeding or chilling isolated sections Chemical composition unsuited for section involved
Abrupt change in section size Low carbon
Incorrect pattern dimensions resulting in thin or heavy sectionsImproperly clamped molds
Environment :- Method:- Others:-
Area: pouring Reasons High temperature metal CFT Conclusion
REASONS OF
1 WHY 2 WHY 3 WHY 4 WHY 5 WHY
REJECTION
Shrinkage
Improper feeding
observed after High Pouring
Shrinkage m/cing in dowel
of metal to
Temperature.
casting.
loaction.
REASONS OF
1 WHY 2 WHY 3 WHY 4 WHY 5 WHY
REJECTION
REASONS OF
1 WHY 2 WHY 3 WHY 4 WHY 5 WHY
REJECTION
Any condition that permits excessive moldwall movement
Shrinkage .
