专利摘要:
Method for making a refractory valve is disclosed. The sliding gate valve slide plate in a can has an integral collector nozzle and is formed as two conjoined refractory concrete mouldings with a cup or trough shaped metal foil lying in the joint therebetween. The foil is oxidisable in service to form a bond between the concretes. The concretes may be of different formulations, and the moulding with which molten metal makes contact is preferably the more resistant to the rigorous environment presented by flowing molten metal. The slide plate is cast in two steps using the shaped foil and the can as respective lost mould members which coact with a planar polished surface to produce a cast slide plate needing effectively no finish grinding before installation in a valve.
公开号:SU1450728A3
申请号:SU803225201
申请日:1980-12-12
公开日:1989-01-07
发明作者:Энтони Робертс Майкл;Коппертуэйт Мартин
申请人:Юсс Инджинирз Энд Консалтантс Инк (Фирма);
IPC主号:
专利说明:

The invention relates to metallurgy, and more specifically to refractory products used in the casting of liquid metal,
The purpose of the invention is to simplify the process of manufacturing the product and increase its mechanical properties.
FIG. 1 shows the molding operation of the insertion of the refractory product jHa of FIG. 2 - the operation of forming the refractory body; in fig. 3 - 6 - options refractory products, longitudinal sections.
Refractory product5 which is a collector of a sliding gate valve in the form of a plate with
blunder, consists of inserts
with
the body channel, hull 2 and template 3 arranged by Mead, with insert 20 made of more refractory material, body material 2, and template 3 made of metal foil, for example aluminum or tinned 25.
The product is made using the template 3, the walls 4-6 of the form, the clamping means 7 with an impulse 8 preventing the outflow of concrete and 30 metal casing 9. The air outlets in the template 3 and the casing 9 are filled with holes 10, Surface 11 of the refractory product similar to surface 12 of wall 6 of the form. Concrete is fed through the upper open end 12 of the template 3. The walls of the template 3 can be made with additional fixing with concrete. with folds.40
The method is carried out as follows. Refractory concrete 45 is fed to the mold space, limited by the template 3 and the walls 4 and 5 of the mold, under the influence of vibration to fill the mold without forming voids, and the insert 1 is molded and then heated when it is heated. The metal-JQ casing 9 is then installed and, using the clamping means 7, is fixed to the walls 5 and 6 of the mold, and the space between the casing 9, the mold 3 and the wall 5 of the mold is filled with a second refractory concrete less resistant than the concrete of the insert 1. Product subjected to the final operation of the HRG, then the clamping means 7 is removed and the molded
the reinforced collector is removed from the walls 4, 5 and 6. The metal foil template 3 is insulated from contact with the molten metal, and the sliding surface of the collector plate is smooth, which eliminates the leakage of molten metal between the two plates of the slide gate without grinding them further.
In order to provide a strong connection between the casing 2, the insert 1 and the template 3, the compositions of concrete are selected as follows. The insert 1, in contact with the liquid metal, is molded from concrete, resistant at temperatures up to 1500 ° C, housing 2 - from concrete, resistant at temperatures up to 1000 - 1200 ° C, which also has a lower thermal conductivity than the concrete of insert 1. Forming the inserts use alumina, mullite, aluminosilicates, 50% by weight or more of alumina, magnesium oxide, magnesium aluminate, zirconium, zirconia, refractory carbides, and combinations of these two or more materials. For molding the body, a ban of salt, olive, blast furnace slag, crushed burnt brick, containment I 25–40 wt.% Of alumina, chamotte, burnt clay, siliceous refractory clay, bauxite, and combinations of these two or more materials are used.
The insert 1 can be installed along the entire length of the collector of the sliding slide gate or only in the areas adjacent to the hole in the plate most susceptible to erosion under the action of molten metal streams.
The invention makes it possible to simplify the process of manufacturing a slide vane collector and improve its mechanical properties.
权利要求:
Claims (12)
[1]
1. The product is of refractory material, mainly the collector of the sliding slide gate of the forms of a plate with a nozzle, comprising a housing and an insert with a through channel located inside it, while the insert is made of a more resistant one. . refractory material than body material, characterized in that, in order to simplify the process
making the product and enhancing its mechanical properties, it is additionally equipped with a funnel-shaped bowl-shaped mold, made of metal foil and located between the body and the insert coaxially with the insertion channel.
[2]
2. A product according to claim 1, characterized by the fact that the body and the insert are made of hydraulically or chemically bonded refractory concretes, while the body concrete has a lower thermal conductivity than the concrete of the insert.
[3]
3. Product Popp. 1 and 2, characterized in that the walls of the template are made with folds.
[4]
4. Product on PP. 1-3, characterized in that the template is made of aluminum or tin tin.
[5]
5. Product Popp. 1-4, characterized in that air holes are formed in the wall of the template.
[6]
6.Product on PP. 1-5, characterized in that the insert is made of alumina, mullite, aluminosilicates containing 50% by weight or more of alumina, magnesia, alkminate magnesium, zirconium, zirconia, refractory carbides and combinations of two or more materials.
[7]
7. Product popp. 1-6, characterized in that the body is made of basalt, olivine, domain of slag, crushed burnt brick with a content of 25-40 wt.%
0
five
l
five
0
five
alumina, fireclay, burnt clay, bauxite, and combinations of two or more materials.
[8]
8. Product by PP. 1 - 7, which is made up of the fact that the insert is filled with a length equal to the length of the collector of the sliding slide gate.
[9]
9. Product Popp. 1-8, characterized in that the insert is located on a portion of the length of the collector and a portion of the sliding surface of the tray at, the level of its sliding surface.
[10]
10. Method of making a product from a refractory material, preferably a slide gate collector consisting of a body
and inserts, including preparing the mold and molding the product by filling the mold with refractory concrete, compacting the concrete and the top, characterized in that, in order to simplify the manufacturing process of the product and increase its mechanical properties, the insert is first formed, and then the body of the product is This is before a form is filled with refractory concrete 6 a form is established.
[11]
11. A method according to claim 10, characterized in that the compaction of the concrete in the mold is carried out by vibration.
[12]
12. Method according to paragraphs. 10 and 11, that is, during the filling of the mold with refractory concrete, air is removed from it.
1
Fi13
/
R
jig.5
X
P
cpg.6
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同族专利:
公开号 | 公开日
SE8008724L|1981-06-15|
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AT382541B|1987-03-10|
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DK532680A|1981-06-15|
BR8008182A|1981-06-30|
HU185397B|1985-01-28|
NZ195600A|1984-04-27|
IT8068901D0|1980-12-12|
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IN155012B|1984-12-22|
NO156038C|1987-07-29|
ES497699A0|1982-08-01|
NO803772L|1981-06-15|
BE886621A|1981-06-12|
YU314880A|1983-02-28|
ES8301132A1|1982-11-16|
CH644340A5|1984-07-31|
NL187300C|1991-08-16|
AR224044A1|1981-10-15|
FR2471956B1|1986-10-17|
JPS56128665A|1981-10-08|
CA1141159A|1983-02-15|
DD155145A5|1982-05-19|
ES508406A0|1982-11-16|
PT72199B|1981-10-28|
YU272582A|1985-12-31|
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PT72199A|1981-01-01|
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FI67186B|1984-10-31|
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
GB7943236A|GB2065278B|1979-12-14|1979-12-14|Composite moulded refractory articles amd their manufacture|
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