Composite sleeve for use in rolling rolls for H-section steel and channel steel
US4546527A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 29, 1982 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Nov 29, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2013/106
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A composite sleeve for use in a hot-rolling roll for H-section steel and channel steel comprises a working layer adapted to contact the material to be rolled and composed of two layers, i.e., a first outer layer made of one of adamite with graphite, spheroidal graphite cast iron and adamite having high resistance to sticking, and a second outer layer made of adamite or high chromium iron having high resistance to wear; and an inner layer adapted to be out of contact with the material and made of spheroidal graphite cast steel or spheroidal graphite cast iron having high toughness. The first outer layer covers the second outer layer, and the second outer layer covers the inner layer, the three layers of the first outer layer, the second outer layer and the inner layer being joined together by melting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.