RU1582451C - Method of manufacturing refractory nozzle for continuous casting - Google Patents
Method of manufacturing refractory nozzle for continuous castingInfo
- Publication number
- RU1582451C RU1582451C SU4469753A RU1582451C RU 1582451 C RU1582451 C RU 1582451C SU 4469753 A SU4469753 A SU 4469753A RU 1582451 C RU1582451 C RU 1582451C
- Authority
- RU
- Russia
- Prior art keywords
- continuous casting
- glass
- modification
- microns
- refractory nozzle
- Prior art date
Links
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- Continuous Casting (AREA)
Abstract
Изобретение относитс к области металлургии , в частности к непрерывному литью металлов. Цель - повышение стойкости стакана. Согласно изобретению, посадочную поверхность стакана покрывают смесью глинозема «-модификации с размером кристаллов менее 10 мкм и модификации с размером частиц менее 10 мкм в соотношении 70-90:30-10 с последующей термообработкой при 450-700°С.The invention relates to the field of metallurgy, in particular to continuous casting of metals. The goal is to increase the durability of the glass. According to the invention, the landing surface of the beaker is coated with a mixture of alumina of "-modification with a crystal size of less than 10 microns and modifications with a particle size of less than 10 microns in a ratio of 70-90: 30-10, followed by heat treatment at 450-700 ° C.
Description
Изобретение относитс к области металлургии , в частности к непрерывному литью металлов.The invention relates to the field of metallurgy, in particular to continuous casting of metals.
Целью изобретени вл етс повышение стойкости стакана.The aim of the invention is to increase the resistance of the glass.
П р и м е р 1. На графитошамотный стакан с внутренним диаметром 90 мм и толщиной стенки 10 мм наносили первый слой смеси, состо щей из 70% «-модификации и 30% у-модификации глинозема, размер кристаллов составл л 5-10 мкм. Измельчение кристаллов глинозема проводили методом вибрации. Стакан с покрытием помещали в печь дл отжига с температурой 450°С и выдерживали в течение 7 ч.EXAMPLE 1. On a graphite chamotte cup with an inner diameter of 90 mm and a wall thickness of 10 mm, the first layer of a mixture consisting of 70% α-modification and 30% γ-modification of alumina was deposited, the crystal size was 5-10 μm . Alumina crystals were crushed by vibration. The coated beaker was placed in an annealing furnace at 450 ° C and held for 7 hours.
Потом наносили второй слой смеси на стакан, производили сбоку узла кристаллизатор-стакан . Разливку проводили в медный кристаллизатор диаметром 130 мм. Марка стали 4Х5МФС. Врем работы стакана 1,2 ч.Then a second layer of the mixture was applied to the glass, produced on the side of the mold-glass assembly. The casting was carried out in a copper mold with a diameter of 130 mm. Steel grade 4X5MFS. Cup operation time 1.2 hours
П р и м е р 2. На графитошамотный стакан с внутренним диаметром 90 мм и толщиной стенки 10 мм наносили первый слой смеси, состо щей из 90% «-модификации и 10% у-модификации глинозема. Размер кристаллов составл л 1-5 мкм. Отжиг проводили при 700°С в течение 1 ч.Example 2. On a graphite chamotte cup with an inner diameter of 90 mm and a wall thickness of 10 mm, a first layer of a mixture consisting of 90% α-modification and 10% γ-modification of alumina was applied. The crystal size was 1-5 microns. Annealing was carried out at 700 ° С for 1 h.
Разливку проводили в медный кристаллизатор диаметром 130 мм. Марка стали 4Х5МФС. Врем работы стакана 1 ч.The casting was carried out in a copper mold with a diameter of 130 mm. Steel grade 4X5MFS. Cup operation time 1 h.
П р и м е р 3. На графитошамотный стакан с внутренним диаметром 90 мм и толщиной стенки 10 мм наносили первый слой смеси, состо щей из 80% «-модификации и 20% у-модификации глинозема. Размер кристаллов «-модификации 1-5 мкм, размер кристаллов у-модификации 5- 10 мкм, Отжиг проводили при 500°С в течение 3 ч. Отливали заготовки диаметром 130 мм, марка стали 4Х5МФС. Врем работы стакана 1,2 ч.Example 3. A graphite chamotte cup with an inner diameter of 90 mm and a wall thickness of 10 mm was coated with a first layer of a mixture consisting of 80% α-modification and 20% γ-modification of alumina. The size of the α-modification crystals is 1–5 μm, the size of the γ-modification crystals is 5–10 μm. Annealing was performed at 500 ° С for 3 hours. Billets with a diameter of 130 mm were cast, steel grade 4X5MFS. Cup operation time 1.2 hours
При разливке легированных сталей по прототипу врем работы стакана составл ет 1,0ч.When casting alloy steels according to the prototype, the operation time of the cup is 1.0 hours.
Согласно данным экспериментов, изобретение в сравнении с прототипом обладает следующими преимуществами:According to experiments, the invention in comparison with the prototype has the following advantages:
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увеличивает эксплуатационную стойкость стакана при разливке легированных марок сталей не менее чем в 1,2-1,3 раза;increases the operational stability of the glass when casting alloyed steel grades not less than 1.2-1.3 times;
позвол ет повысить выход годного металла на 14%.allows to increase the yield of metal by 14%.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4469753 RU1582451C (en) | 1988-08-03 | 1988-08-03 | Method of manufacturing refractory nozzle for continuous casting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4469753 RU1582451C (en) | 1988-08-03 | 1988-08-03 | Method of manufacturing refractory nozzle for continuous casting |
Publications (1)
Publication Number | Publication Date |
---|---|
RU1582451C true RU1582451C (en) | 1993-05-07 |
Family
ID=21393696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU4469753 RU1582451C (en) | 1988-08-03 | 1988-08-03 | Method of manufacturing refractory nozzle for continuous casting |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU1582451C (en) |
-
1988
- 1988-08-03 RU SU4469753 patent/RU1582451C/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР №584462, кл. В 22 D 11/10, 1976. * |
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