Treatment of ingots or spacer blocks in stacked aluminum ingots
US6461451B1 · kind B1 · utility
2Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/224
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of treating a surface of a stacked aluminum alloy ingot during a heating process. Spacer blocks are positioned adjacent aluminum alloy ingots to form a stack, wherein the spacer block has a support surface contacting a contact surface of the aluminum alloy ingot, and at least one of the support surface and the contact surface include a fluorine containing material. The stack is heated to at least a temperature at which the fluorine containing material decomposes or vaporizes such that a layer of a fluorinated oxide compound is formed at the interfaces between the ingots and the spacer blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.