SU732218A1 - Coating for protecting non-alloy and low-alloy steels agaist oxidation and decarbonizing - Google Patents
Coating for protecting non-alloy and low-alloy steels agaist oxidation and decarbonizing Download PDFInfo
- Publication number
- SU732218A1 SU732218A1 SU742004796A SU2004796A SU732218A1 SU 732218 A1 SU732218 A1 SU 732218A1 SU 742004796 A SU742004796 A SU 742004796A SU 2004796 A SU2004796 A SU 2004796A SU 732218 A1 SU732218 A1 SU 732218A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- coating
- alloy
- sublayer
- oxidation
- agaist
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Description
НЫХ. сталей, состо щем из огнеупорного подсло и стекловидцого покровиого сло включающего S503.,CaO,,A. ,ЬаОз подслой выполнен из смеси электроплавленного корунда и добавки 5-6% глины, а покровный слой дополнительно содержит MgO при следующем соотношении CftO2,0-13,5Nyh steel, consisting of a refractory underlayer and a vitreous cover layer comprising S503., CaO ,, A. The LaOz sublayer is made of a mixture of electrowelled corundum and an additive of 5-6% clay, and the coating layer additionally contains MgO in the following ratio CftO2.0-13.5
No 2,0 No 2.0
5,5-28 5.5-28
1,7-5,01.7-5.0
bsLObbsLOb
26-70 26-70
MgO 6-8MgO 6-8
Si OaSi Oa
Остальное При этом толщина подсло по отношению к тс дщне покровного сло составл ет 1 : (1-1,7).Remaining At the same time, the thickness of the sublayer with respect to the ts of the bottom of the coating layer is 1: (1-1.7).
Приведенный состав покрыти готов т по следующей технопогаи.The above coating composition is prepared according to the following technopoga.
Водна суспензи готовитс из смеси порощка электроплавленншо корунда, предварительно измельченного до фракции 0,О75мм ЗО-45%, менее 0,075мм 40-65%, К водной суспензии как суспендирующие и св зующие компоненты добавл ютс часовь рска глина &-6%, концевтрат сульфитно-спиртовой барды 1-15% (вес.% от веса стеклопорощка).The aqueous suspension is prepared from a mixture of powdered electrofusion corundum, previously crushed to a fraction of 0, O75mm DF-45%, less than 0.075mm 40-65%. sulfite-alcohol stillage 1-15% (wt.% of the weight glass shaker).
Подслой можно наносить на стали методом пульверизации, окунанием, валиком или кистью толщиной 0,2-О,5мм. После просущки в течение 20-30 мин после нанесени подсло на него нанос т покровный слой в виде водной суспензии .The sublayer can be applied to the steel by spraying, dipping, roller or brush thickness 0,2-O, 5mm. After drying for 20-30 minutes after applying a sublayer, a covering layer is applied to it in the form of an aqueous suspension.
Покровный слой готовитс из смеси стекло порошка с фракцией О,075 мм ЗО-6О%, менее 0,О75 мм 45-55%.The coating layer is prepared from a mixture of glass powder with a fraction of O, 075 mm SO-6O%, less than 0, O75 mm 45-55%.
Вначале размешивают глину (5- 6 вес.%) в подогретой до 35-45®Своде, отдельно раствор ют 1-1,5 вес.% концентрата сульфитно-спиртовой барды,First, the clay is stirred (5–6 wt.%) In the preheated 35–45® water, 1–1.5 wt.% Of the sulfite-alcohol stillage concentrate is dissolved,
В полученную водную смесь ввод т стеклопорощок и хорошо перемешивают, добавл воду до требуемой в зкости.The glass is added to the resulting aqueous mixture and mixed well by adding water to the desired viscosity.
Покровный слой толщиной 0,2-0,2 5 м нанос т на подслой.A coating layer with a thickness of 0.2-0.2 5 m is applied on the sublayer.
Покрытие можно наносить методом пульверизации, окунанием, валиком или кистью.The coating can be applied by spraying, dipping, roller or brush.
Двухслойное защитное покрытие нанос т на образцы из сталей 12ХМ, 15ХМ, 16ГС О9Г2С. Образцы подвергали нагреву в диапазоне температур 9ОО95О С в течение 1-4-« ч по заводским режимам термообработки.A two-layer protective coating is applied to samples of steel 12XM, 15XM, 16GS O9G2S. The samples were subjected to heating in the temperature range 9OO95O C for 1-4 - “h according to factory heat treatment conditions.
При нагревании в результате оплавлени образуетс сплошной газонепроницаемый слой, который защищает металл от окислени . Подслой исключает возможность (Коррозийного воздействи пскровного сло на металл.When heated as a result of melting, a continuous gas-tight layer is formed that protects the metal from oxidation. Sublayer eliminates the possibility of (Corrosive effects of the blood layer on the metal.
После проведени операции термообработки образцы охлаждают на воздухе. При этом в результате разницы коэффициентов линейного расширени покрыти и металла покрытие самопроизвольно скальюаетс ,After the heat treatment operation, the samples are cooled in air. At the same time, as a result of the difference in the coefficients of linear expansion of the coating and the metal, the coating spontaneously skins,
В табл. 1 приведены составы покрытий Свойства покрытий, изготовленных из составо,э 1-3 представлены в табл, 2 ТаблицаIn tab. 1 shows the composition of coatings Properties of coatings made from the composition, e 1-3 presented in Table 2 Table 2
ГлинаClay
Электррплавленнкй корундElectroplated Corundum
СаОCao
6 А6 A
MgO ,,MgO ,,
Подслой 5Sublayer 5
Остальное Покровный слойCover coat
2,02.0
5,55.5
1,71.7
2626
66
ОстальноеRest
Таблица 2table 2
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742004796A SU732218A1 (en) | 1974-03-11 | 1974-03-11 | Coating for protecting non-alloy and low-alloy steels agaist oxidation and decarbonizing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742004796A SU732218A1 (en) | 1974-03-11 | 1974-03-11 | Coating for protecting non-alloy and low-alloy steels agaist oxidation and decarbonizing |
Publications (1)
Publication Number | Publication Date |
---|---|
SU732218A1 true SU732218A1 (en) | 1980-05-05 |
Family
ID=20578456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU742004796A SU732218A1 (en) | 1974-03-11 | 1974-03-11 | Coating for protecting non-alloy and low-alloy steels agaist oxidation and decarbonizing |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU732218A1 (en) |
-
1974
- 1974-03-11 SU SU742004796A patent/SU732218A1/en active
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