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VSPL is an authorized importer of Cold Rolled Grain Oriented (CRGO) Steel(the basic raw material for manufacturing Lamination and Wound Cores) from reputed overseas mills in Various Grades are imported in the form of mother coils. The company maintains extensive stocks of all grades, to meet the customer’s qualitative and quantitative requirements.

  • RAW MATERIAL QUALITY CHECK

A special attention is paid to ensure quality while processing raw material. All the incoming material goes through a quality check in VARDHMAN- Dr. BROCKHAUS Magnetic Material Testing Laboratory. Plus, all materials are processed on CNC Machines. Tungsten Carbide-tipped cutting tools ensure minimum burr levels and high accuracy. Quality Control checks are carried out throughout the manufacturing process.

  • QUALITY NORMS -RAW MATERIAL

Sr. No.

Tests

Acceptance Norms

1

Bend Test or Brittleness Test

Min. 5 Bends
0-180° Bending of Sample
(Size: - 305 x 30mm

2

Stacking Factor Test

As per Diff. Thickness (mm)
0.23 – 95.5%
0.27 – 96.0%
0.30 – 96.0%
0.35 – 96.5%

3

Surface Insulation Resistivity Test as per Franklin Test Method

Min. 10 Ohm/Cm2

4

Core Loss Test
(By Epstien Square Test Method)

W/kg. at specific Flux Density for diff. Grades from coils (At start and end of the coil)

5

A/c Permeability Test

Min. 1.75T at 800 AT/m & 50 Hz for conventional G.O. Steel and Min. 1.85 T at 800 AT/m & 50 Hz For High Permeability G.O. Steel.

Although we follow IS Standards, however our plant works at the most upgraded technology with far ahead stricter quality norms than above mentioned standards to ensure the best of customer's needs. Top
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