FIELD: process engineering.
SUBSTANCE: invention relates to surface processing and can be used for improving steel antirust properties in oxidising media (oxygen, air, steam). This process includes the application of protective film on surface at increased temperature. Note here that before application of said film, initial oxide film is removed at the room temperature in inert medium by emery cloth and this surface is finished. Now, chromium oxide 0.8÷1.0 mcm deep protective film is applied on said steel surface by its oxidation at oxygen partial pressure of 10-8÷10-10 Pa and temperature of 830÷930°C.
EFFECT: higher antirust properties.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CORROSION PROTECTION OF SURFACE OF STEELS AND ALLOYS | 2014 |
|
RU2572115C1 |
| METHOD OF INCREASING CORROSION RESISTANCE OF STRUCTURAL MATERIALS, METAL ARTICLE WITH INCREASED CORROSION RESISTANCE | 2014 |
|
RU2595184C2 |
| METHOD OF INCREASING CORROSION RESISTANCE OF STEEL FOR CIRCUIT WITH HEAVY LIQUID METAL COOLANT | 2014 |
|
RU2584361C1 |
| METHOD OF OXIDATION OF METALS AND ALLOYS AND DEVICE FOR METHOD EMBODIMENT | 2000 |
|
RU2189400C2 |
| METHOD FOR INTRA-LOOP PASSIVATION OF STEEL SURFACES OF NUCLEAR REACTOR | 2013 |
|
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| INTRACIRCUIT PASSIVATION METHOD OF STEEL SURFACES OF FAST NEUTRON NUCLEAR REACTOR | 2013 |
|
RU2543573C1 |
| METHOD FOR PROTECTION OF STRUCTURAL MATERIALS FROM CORROSION AT HIGH TEMPERATURES IN LIQUID LEAD, BISMUTH AND THEIR ALLOYS | 1993 |
|
RU2066710C1 |
| PROCESS FOR WASTE-FREE PASSIVATION AND CONSERVATION OF POWER EQUIPMENT OF PEARLITE STEELS | 2000 |
|
RU2182193C1 |
| METHOD OF OXIDATION OF POWER-GENERATING EQUIPMENT FROM PEARLITIC STEEL | 2000 |
|
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| NUCLEAR INSTALLATION WITH REACTOR WITH LIQUID-METAL COOLANT | 2016 |
|
RU2632814C1 |
