Steel rotor with hardened fibre collecting groove and method of manufacture thereof
US4167846A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1978 |
| Grant date | Sep 18, 1979 |
| Priority date | — |
| Expiry date | Feb 22, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S148/902
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method of manufacture of a rotor for the open end spinning of staple fibres into yarn which is formed of a steel and has hardened surfaces at its fiber contacting and collecting surfaces, wherein the rotor may be fashioned by machining from a block of steel or formed from sheet steel, then hardening its internal fiber contacting surfaces by induction heating or carburizing or nitriding or carbonitriding at least in the region of the rotor's maximum diameter, then quenching and thereafter stress-relieving the entire rotor. Such method provides a rotor with exceptional properties of wear resistance in the area most prone to abrasive wear which latter otherwise reduces the rotor's useful service life and substantially increases yarn processing costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.