Apparatus for quenching butt-welded portion of rail
US4573666A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1984 |
| Grant date | Mar 4, 1986 |
| Priority date | — |
| Expiry date | Jul 16, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/667
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apparatus for quenching a butt-welded portion of a rail, includes an inverse U-shaped cooling box for covering from above and throughout a butt-welded portion of a rail, and for quenching the butt-welded portion by cooling air. The cooling box is divided into a head cooling chamber, a web left cooling chamber, and a web right cooling chamber each having a plurality of cooling air nozzles directed toward the butt-welded portion. A cooling air supply mechanism supplies cooling air to the cooling box, the cooling air supply mechanism including a cooling air source, a solenoid valve operatively arranged in a cooling air supply pipe, a head cooling air regulating valve, a web cooling air regulating valve, and a valve opening controlling mechanism which opens each of the head cooling air regulating valve and the web cooling air regulating valve according to a predetermined program. A cooling box holding mechanism releasably holds the cooling box at a prescribed position so as to cover the rail throughout the butt-welded portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.