Manufacturing method for continuously cast product of steel
US7156148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Mar 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/102
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A manufacturing method for a continuously cast product of steel includes the steps of detecting a position of a crater end of the product by a method for measuring a solidification state of the continuously cast product using a sensor arranged so as to be in non-contact with the product, and controlling at least one condition selected from the conditions of the casting speed and the quantity of secondary cooling water based on the detected position of crater end. The method for measuring a solidification state of continuously cast product includes the steps of transmitting transverse waves of burst-like electromagnetic ultrasonic waves, in which at least one selected from frequency, amplitude, and phase is modulated within a pulse width that has a magnitude of 50 to 150% of the maximum time width not exceeding a time of flight for propagating in said product, to said product as a transmitting signal, receiving a signal after said transmitting signal propagates in said product as a receiving signal, and judging the solidification state of said product by performing a correlation operation of said receiving signal by using a reference signal of a waveform that is the same as or simil…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.