Patent · US Expired

Method and device for producing a powder aerosol and use thereof

US6331689A · kind A · utility

4Cited by

8References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

David Branston · Effeltrich, DE
Guenter Lins · Erlangen, DE
Jobst Verieger · Erlangen, DE

Key dates

Filing date	Mar 12, 2001
Grant date	Dec 18, 2001
Priority date	—
Expiry date	Mar 12, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K9/324
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Powder aerosols are introduced into a gas stream in metered form and without any aggregates. To this end, according to the invention, a powder is drawn, for example by mechanical device, from a reservoir area and is converted into a powder aerosol which is introduced within a flowing gas stream into a container to which ultrasound is applied. The ultrasound breaks down powder lumps and aggregates, and the aerosol can be fed in a uniform, fine powder distribution within the gas stream to a plasma burner. Apparatus for carrying out this invention includes a feed tube (4) connected to a mechanical powder feed device (6), so that an aerosol containing the powder enters a vessel (10) containing the ultrasound horn (2). The method and the associated apparatus are used for the coating of components, preferably for applying a protective coating to a turbine blade.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.