Method of recalibrating a worn conical, especially curved tubular mold
US4457151A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1982 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Feb 2, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49806
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A worn conical tubular mold, exhibiting irreparable surface flaws or defects at the inner tubular wall of the mold at the location of the former region of the molten bath level existing in the tubular mold when the same was previously used during continuous casting, is formed or reformed through the use of an explosive forming technique with the aid of a calibration arbor or mandril so as to possess a new reversed taper. As a result, the surface flaw or defect now is located at the region of what becomes the new strand outlet of the reformed tubular mold and unimpaired, fissure-free mold wall material comes to lie at the region of the tubular mold where there will appear the new molten bath level when the reformed tubular mold then is again used for casting purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.