Apparatus and method for discharge surface treatment
US7323213B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2006 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | May 8, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D3/141
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus has a green compact electrode including a material of a coating formed on a workpiece by a discharge, a power source for supplying a first voltage, a voltage detector for detecting a voltage between the workpiece and the electrode, and a pulse current generator for generating and outputting a pulse current from the first voltage, and for cutting off the output when a predetermined period of time has passed after the voltage is detected to be less than a detection voltage. The pulse current is supplied between the workpiece and the electrode, and the detection voltage is less than the first voltage by 5% to 20% of the first voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.