ARC start ancillary apparatus
US6066831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Aug 4, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0673
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In an arc start ancillary apparatus, which is connected in parallel to a welding power source for supplying electric power necessary for arc discharge between an electrode and a base metal, for supplying a pulsed electric current in transferring from spark discharge to arc discharge, an object of the present invention is to solve a problem in that arc is not started, and to keep the effective value of current low. A capacitor with a relatively high capacitance is connected to secure a current for transferring from spark discharge to arc discharge, and a D.C. high voltage of a high voltage generator is applied according to a pulse in a period to which the period of pulse signals of a fixed period type high voltage controller is set so that the effective value of the current between an electrode and a base metal is kept low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.