Method of making a composite cast iron dryer or the like
US4160048A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1978 |
| Grant date | Jul 3, 1979 |
| Priority date | — |
| Expiry date | May 24, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C4/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention contemplates a method and means for making a dryer or the like roll having a ferrous metal surface provided with a surface coating of a hardfacing alloy, the ferrous metal surface having a thermal conductivity relative to silver taken as 1 cal/cm.sup.2 /cm/.degree.C./sec of at least about 0.06 the hardfacing alloy being a hardfacing heat, corrosion and wear resistant iron-group metal-base alloy mechanically and metallurgically bonded to said ferrous metal surface which is preferably made of cast iron, the hardfacing alloy coating having a thickness ranging from about 0.01 to 0.15 inch, the thermal conductivity of said coating being at least 0.05.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.