Manufacture of screen plate with screen slots obtained by laser beam cutting
US6479789B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Mar 13, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/384
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for manufacturing a screen plate with screen slots from a thin plate (1), which screen slots (5, 13) are achieved by cutting. The plate is formed by bending to a screen plate of a desired shape. The screen slots (5, 13) are produced by a laser beam for cutting, which hits the plate from one of its sides, the inlet side. Focus for the beam is situated on a predetermined depth between both sides of the plate. The slot is obtained by at least two cutting operations following each other, in which the direction (3, 4) of the laser beam forms two different angles with the main plane of the plate. There is obtained a screen slot (5, 13), the cross section of which increases against the other side of the plate, the outlet side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.