BE802594A - Inhibiting metal oxide formation - with layer contg chromic oxide reducing agent, refractory etc - Google Patents
Inhibiting metal oxide formation - with layer contg chromic oxide reducing agent, refractory etcInfo
- Publication number
- BE802594A BE802594A BE2052937A BE2052937A BE802594A BE 802594 A BE802594 A BE 802594A BE 2052937 A BE2052937 A BE 2052937A BE 2052937 A BE2052937 A BE 2052937A BE 802594 A BE802594 A BE 802594A
- Authority
- BE
- Belgium
- Prior art keywords
- pts
- layer
- reducing agent
- inhibiting layer
- metal oxide
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Oxide scale layers in high temp. atmos. are inhibited by first applying a separation layer, and then the inhibiting layer. The coated metal is dried so that the inhibiting layer does not reach a temp. above 70 degrees C. The inhibiting layer consists of 1-20 pts wt. CrO3, 1-20 pts wt Al, Zn, Cu, Ni, Co Mn, Fe, Cr, Ti, Zr, Sr, Mo, Sn, In, C, Fe3O4 and/or FeO, 5-80 pts. wt silica, porcelain, magnesia, montmorillonite, MgO-Cr2O3, MgO-SiO2, clay or dolomite, 5-120 pts wt SiO2 and 5-120 pts wt soluble glass. The inhibiting layer also contains 0.5-5 pts wt bentonite, The separation layer contains Ba, Ca, Al, Mn, Cr, Cu, Mg, Nb, P, Si, Ti, Zr, Co, Cd, K, Li, Sr, Zn, Na, V, Bi, W, and/or Fe, or their oxides, carbonates or cpds esp. B4O7, HB4O7--, HSO4-, SO4--, S2O7--, HS2O7--, P2O7--, HP2O7-, H2PO4-, HPO4--, PO4--, H3BO3 and/or B2O3. The inhibiting layer is applied at the rate of more than 0.03 kg/m2, and the separation layer at the rate of more than 0.05 mole/m2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7199072A JPS5343124B2 (en) | 1972-07-20 | 1972-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE802594A true BE802594A (en) | 1973-11-16 |
Family
ID=13476395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE2052937A BE802594A (en) | 1972-07-20 | 1973-07-20 | Inhibiting metal oxide formation - with layer contg chromic oxide reducing agent, refractory etc |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5343124B2 (en) |
| BE (1) | BE802594A (en) |
| BR (1) | BR7305461D0 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS527807A (en) * | 1975-07-10 | 1977-01-21 | Nisshin Paudaru:Kk | Method of using dust produced during production process of ferrosilico ne |
| JPS5257007A (en) * | 1975-11-06 | 1977-05-11 | Nippon Steel Corp | Antioxidant |
| US20210002771A1 (en) * | 2018-02-15 | 2021-01-07 | Quaker Chemical Corporation | A chemical method to decrease oxide scale generation in hot rolling |
-
1972
- 1972-07-20 JP JP7199072A patent/JPS5343124B2/ja not_active Expired
-
1973
- 1973-07-19 BR BR546173A patent/BR7305461D0/en unknown
- 1973-07-20 BE BE2052937A patent/BE802594A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4930237A (en) | 1974-03-18 |
| JPS5343124B2 (en) | 1978-11-17 |
| BR7305461D0 (en) | 1974-08-15 |
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