Method of forming porcelain enamels on aluminized steel
US4460630A · kind A · utility
28Cited by
19References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1982 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Mar 9, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2207/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a method of forming porcelain enamel layer on a metal substrate, the method comprises steps of applying a first coating for an underlying ground layer and a second coating for overlying self-cleaning layer or coloring layer, and the method is characterized by firing both of said first coating and said second coating at the same time, forming a double layered porcelain enamel layer having an inter-layer wherein both layers are mixed, thus giving a sufficient bonding force inbetween as well as strong corrosion resistivity of the substrate due to few pinholes and bubbles in the underlying ground coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.