Butt-welded cans and process for manufacturing the same
US4805795A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1355
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
There is here provided butt-welded cans made of steel plates having a carbon concentration of 0.02 to 0.09% by weight, the aforesaid butt-welded cans being characterized in that a coating film for preventing the adhesion of melted metal particles is applied to at least the inner surface of the weld portion and its vicinity of each can, and a carbon concentration index I of the weld portion satisfies the formula (1) EQU I=(Iw/Ic).times.10.sup.3 .ltoreq.15 (1) wherein Iw is a K.alpha. X ray intensity, of carbon in the weld portion, measured by the EPMA method, and PA0 Ic is a K.alpha. X ray intensity, of carbon in graphite, measured by the EPMA method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.