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At VSPL, quality control checks are conducted throughoutthe Laminationmanufacturing process, at half-hour intervals, on every machine, and the recordsare maintained separately.
The Laminations are checked for Edge Burrs, Width, Camber, Thickness, Stack Thickness, Wave Factor, etc., which have to be in accordance with the respective least measurements done by various measuring devices.
- Standard Tolerance on various parameters is as follows:
Sr. No. |
Characteristics |
Acceptance Limit/Criteria |
1 |
Width (mm) |
0 to 100 (+/- 0.15)
|
2 |
Thickness (mm) |
+ 0.03 mm |
3 |
Edge Burrs (micron)
|
Burrs Micron
|
4 |
Length (mm) |
Upto 350 (+0.00/-0.30)
|
5 |
Edge Camber |
For material with a width greater than 150mm, edge camber shall not exceed 0.80mm for a length 1.5 Meter |
6 |
Wave Factor
|
For material with a width greater than 150mm, the deviation from flatness expressed as a percentage shall not exceed 1.5% |
7 |
Angle |
+/- 5 Minutes |
8 |
Stack Thickness of Individual stack except center step |
+1-0mm |