Winding drums – Steel and aluminium
Steel winding drums
Main characteristics:
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Excellent resistance to both abrasive and adhesive wear.
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Most suitable for woolen and worsted yarns and any highly abrasive yarns.
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Self lubricating surface for less friction, surface retaining lubricant forever.
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Diffusion (Nit riding) surface treatment eliminates chipping, flaking or peeling off, while it may happen in chrome plating and nickel plating.
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Wear resistance surface increases drum life by four times compared with chrome plated drum.
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Resistance to atmospheric corrosion, fretting corrosion and cavitations erosion.
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Evenly hardened so recessed and grooves are equally protected.
Aluminium winding drums
Main characteristics:
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Super finish, light weight & lower inertia.
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Uniform package density, also in soft dye.
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Ceramic inserts at crossing points.
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Thick & uniform layer of hard anodic coating, no peeling off.
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Abrasion and corrosion resistant.
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Superior hardness and low friction.
- Hard anodized aluminium winding drums for long lasting performance.
- Hardness: 495-534 BHN and increase towards inside.
- Coating thickness: 60-80 microns.
Comparison of Hardness in BHN:
- Bakelite Traverse drum: 33-56
- Uncoated aluminum Traverse Drum: 90-100
- Cast Iron Traverse Drum: 115-200
- Hard Anodized Traverse drum: 495-534
- Hard Chrome drum: 601-745
