Plasma cutting method for cutting a carbon steel plate and for reducing fine particles
US8598487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2008 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Feb 16, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/383
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
[PROBLEMS] To reduce the generation of fume in cutting a material to be cut typified by a steel plate with plasma.[MEANS FOR SOLVING PROBLEMS] A plasma cutting method comprising spraying a plasma arc directed through a material to be cut from a plasma torch nozzle to cut the cutting material, wherein a plasma arc formed by supplying a mixed gas as a plasma gas composed of a single gas or a plurality of gases selected from halogen gases and rare gases belonging to up to the second row elements of the periodic table and a hydrogen gas, and oxygen-, argon- or nitrogen-containing gas to a part around an electrode, and electrifying a part between the electrode and the nozzle or between the electrode and the cutting material is sprayed toward the cutting material to cut the cutting material, or wherein a single gas or a plurality of gases selected from halogen gases or rare gases belonging to up to the second row elements of the periodic table and a hydrogen gas, together with the plasma arc composed mainly of an oxygen, argon or nitrogen gas, is sprayed toward the cutting material to cut the cutting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.