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Hi all,
I am doing my project in PFMEA of Aluminium Die casting process.
Details:
Process-Aluminium- High pressure-Cold Chamber Die casting
From the last six month data ,we collected the various type of defects
Defects in the order of occurrence (High to low)
Blowholes
Poorflow
Casting Damage
White rust
Trimming Damage
Insert Blowholes
Bubbles
Airholes
Leakage(oil)
Unwash
Gate area Deep Broken
The doubts i have in mind are
i) Is Defect a Failure Mode
ii) If yes, Which defects mentioned above are failure modes to be considered for Process FMEA
iii) After identifying failure mode, how to identify the effect and cause
iv) i have little knowledge about casting process. pls specify the Potential effect and causes for the above defects
v)How can i assign severity for above defects
vi)can i use the past data to decide the severity level and occurrence
Pls explain me in detail
Thanks in advance
Karuna
I am doing my project in PFMEA of Aluminium Die casting process.
Details:
Process-Aluminium- High pressure-Cold Chamber Die casting
Process flow:
1) Raw material melting
2) Metal Pouring
3)Injection
4)Solidification
5)Casting Extraction
6)Die coat Spray
7)Runner Breakage
8)Trimming
9)Fettling
10)Inspection
2) Metal Pouring
3)Injection
4)Solidification
5)Casting Extraction
6)Die coat Spray
7)Runner Breakage
8)Trimming
9)Fettling
10)Inspection
From the last six month data ,we collected the various type of defects
Defects in the order of occurrence (High to low)
Blowholes
Poorflow
Casting Damage
White rust
Trimming Damage
Insert Blowholes
Bubbles
Airholes
Leakage(oil)
Unwash
Gate area Deep Broken
The doubts i have in mind are
i) Is Defect a Failure Mode
ii) If yes, Which defects mentioned above are failure modes to be considered for Process FMEA
iii) After identifying failure mode, how to identify the effect and cause
iv) i have little knowledge about casting process. pls specify the Potential effect and causes for the above defects
v)How can i assign severity for above defects
vi)can i use the past data to decide the severity level and occurrence
Pls explain me in detail
Thanks in advance
Karuna
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