Arc thermal spray gun extension with conical spray
US6076742A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1999 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Mar 11, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B13/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a two-wire arc spray extension two metal wires are guided into contact, and a gas cap is affixed to a gun body. The feeding wires receive an arc current to effect an arc and thereby molten metal at the wire tips. The gas cap has a plurality of orifices therein that receive pressurized gas to generate gas jets. The orifices are disposed with substantially equal spacing arcuately such that the jets are directed with a radially inward component toward the tips to effect atomization of the molten metal into a spray stream. The orifices have axes that are offset forwardly and tangentially from radial so as to create a vortex flow such that the spray stream is effected in the form of a conical fan. Insertion of the spray stream centrally into a hole can effect a coating circumferentially on an inside surface of the hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.