Two part light metal coating and method of making same
US6286583A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12764
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cylinder-liner blank which preferably consists of a hypereutectic aluminum/silicon alloy and is cast into a crankcase. A special surface treatment achieves better material bonding of the liner in the crankcase. The blank has a roughness of 30 to 60 .mu.m on its outside, in the form of pyramid-like or lancet-like protruding material scabs or material accumulations. To obtain this roughness, the surface is blasted with particles which are broken so as to have sharp edges and consist of a brittle hard material, preferably high-grade corundum, with an average grain size of about 70 .mu.m. A fine fraction is formed and is continuously separated off. The average grain size is maintained by adding new particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.