Jet nozzle

US4687141A · kind A · utility

Assignee

• Voest-Alpine International Corporation · US

Inventors

• Othmar Kriegner · Ternitz, AT
• Franz Lang · Kelkheim, DE
• Gunter Holleis · Linz, AT
• Karl Schwaha · Linz, AT
• Fritz Granitz · Linz, AT

Key dates

• Filing date: Jul 13, 1984
• Grant date: Aug 18, 1987
• Expiry date: Jul 13, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/1246
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The jet exiting from jet nozzles is guided along a guide surface for a jet nozzle with one or more nozzle channels disposed next to each other and in parallel, where the hydraulic diameter of the nozzle channels is from about 1.5 to 4 millimeters. In order to limit sharply and without spray the jet exiting out of the jet nozzle crosswise to its axis on the sides and in order to maintain it of uniform width over a large part of its length, the guide surface is of concave shape, the nozzle channels merge without step into the cylindrical jacket surface, the axes of the nozzle channels and the guide surface include an angle of from 0.5 and 2.5 degrees, and the guide surface is provided with a tear-off provision with a cutting edge.