| Overfeed Discs for 2-for-1 twisting machines |
| Case Study |
| Problem Overfeed discs are made of stainless steel and are hard chrome plated. These are used in 2-for-1 twisting machines. The components are subjected to extreme abrasion by the twisted yarn / fiber. Abrasive yarns like carpet fibers, aramid, polypropylene, jute, etc. abrade these components Solution Chemically formed ceramic coatings Tech 22 are applied on to the surface of the overfeed discs to produce a very hard and highly smooth surface on the discs. These surfaces are very kind to the yarn and provide long life. Life increase is dramatic as compared to hard chrome plated discs. Some machines use over feed discs made of brass. This has to be changed to stainless steel for applying the ceramic coating. Tech 22 ceramic coating cannot be applied to brass because of the high differential in thermal coefficient of expansion of the two materials. |
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