CN110170616A - Heat preservation riser and preparation method thereof - Google Patents
Heat preservation riser and preparation method thereof Download PDFInfo
- Publication number
- CN110170616A CN110170616A CN201910456123.9A CN201910456123A CN110170616A CN 110170616 A CN110170616 A CN 110170616A CN 201910456123 A CN201910456123 A CN 201910456123A CN 110170616 A CN110170616 A CN 110170616A
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- Prior art keywords
- riser
- heat preservation
- buss
- powder
- riser buss
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a kind of heat preservation riser and preparation method thereof, the heat preservation riser includes riser buss, permeable formation and heating layer；The riser buss is hollow shell；The permeable formation is made of porous coatings；The heating layer is made of exothermic paint；The permeable formation is covered on the inner surface of the hollow shell of riser buss；The heating layer is covered on the outer surface of permeable formation；The riser buss is made of riser buss top and riser buss lower part；The riser buss top and riser buss lower part are used cooperatively；The bottom of the riser buss is equipped with riser neck；The hollow shell of the riser buss is spherical shape；The wall thickness of riser buss is greater than 15mm；The riser buss diameter is 1.5~2.5 times of riser neck diameter；The riser buss is prepared by ceramsite sand, resin and curing agent；The exothermic paint is uniformly mixed by exothermic material with water based paint.Preparation process of the present invention is simple, and heat preservation riser has the advantages such as high feeding efficiency, low cost.
Description
Technical field
The present invention relates to casting technology fields, more particularly to a kind of heat preservation riser and preparation method thereof.
Background technique
Riser is the structural body for the storage molten metal being artificially arranged in casting mold, can in casting forming process to compensate
The contraction that can be generated plays a part of to prevent casting from generating shrinkage cavity and porosity and has exhaust concurrently, collection slag, guides and fill type.The kind of riser
Class has cylinder, top dome cylinder, kidney-shaped, spherical shape, atmospheric feeder, heat preservation riser, feeding efficiency such as 1 institute of table
Show, as it can be seen from table 1 the feeding efficiency of common riser is very low, is usually no more than 30%, the feeding effect of heat preservation riser
Rate highest, up to 55% or more.But the preparation process of current heat preservation riser mostly uses exothermic material, thermal insulation material viscous
Knot agent is blended in one, is prepared into the heat preservation riser buss of cylindrical shape, the utilization rate of exothermic mixture is lower, especially greatly
Size heat preservation riser buss, utilization rate is very low, less than 10%, to cause waste.
The feeding efficiency of 1 variety classes riser of table
| Riser type | Cylindrical riser | Spherical feeder | Atmospheric pressure spherical feeder | Insulated feeder | Heat preservation riser |
| Feeding efficiency (%) | 12~15 | 15~20 | 20~30 | 25~30 | 30~65 |
Summary of the invention
In order to solve the problems, such as that exothermic mixture utilization rate is low in existing casting heat preservation riser buss, waste serious, this hair
Bright to provide a kind of heat preservation riser and preparation method thereof, preparation process is simple, and heat preservation riser has high feeding
The advantages such as efficiency, low cost.
To solve above-mentioned deficiency, the technical solution adopted by the present invention are as follows:
A kind of heat preservation riser, the heat preservation riser include riser buss (1), permeable formation (2) and heating layer (3)；
The riser buss (1) is hollow shell；The permeable formation (2) is made of porous coatings；The heating layer (3) is using hair
Hot coating is made；The permeable formation (2) is covered on the inner surface of the hollow shell of riser buss (1)；Heating layer (3) covering
In the outer surface of permeable formation (2).
Further, the riser buss (1) is made of riser buss top and riser buss lower part；The riser buss top and
Riser buss lower part is used cooperatively.
Further, the bottom of the riser buss (1) is equipped with riser neck (4).
Further, the hollow shell of the riser buss (1) is spherical shape；The wall thickness of riser buss (1) is greater than 15mm.
Further, the riser buss diameter is 1.5~2.5 times of riser neck diameter.
Further, the riser buss (1) is prepared by ceramsite sand, resin and curing agent.
Further, the porous coatings aggregate includes ZrO2、SiO2、Fe2O3And H2O；The mass percent is
ZrO260%~65%, SiO230%~35%, Fe2O30.2%~0.3% and H2O 8%~12%；The permeability applies
The Baume degrees of material is 30~50.
Further, the exothermic paint is uniformly mixed by exothermic material with water based paint.
Further, the exothermic paint is Al powder and Fe2O3The mixed-powder of powder；The Al powder and Fe2O3The purity of powder
It is 99.5% or more；The Al powder and Fe2O3The granularity of powder is 0.1~1mm；The Al powder and Fe2O3The mass ratio of powder
For 1:3~1:2.
Further, the water based paint includes Al2O3、SiO2、Fe2O3, C, S and H2O；The mass percent is
Al2O38%~10%, SiO260%~65%, Fe2O35%~7%, C 10%~15%, S≤0.08% and H2O
10%~20%；The Baume degrees of the water based paint is 35~60.
A kind of production method of heat preservation riser, comprising the following steps:
S1 prepares riser buss；
Inner surface uniform brushing porous coatings of the S2 in riser buss；
S3 is in the uniform brushing exothermic paint in the surface of permeable formation；
S4 drying.
Further, the weight of the heating layer accounts for the ratio of riser weight are as follows: 5%~10%.
The beneficial effects of the present invention are:
(1) a kind of new method for preparing low cost, high feeding efficiency heat preservation riser is provided；
(2) feeding efficiency of heat preservation riser of the present invention is up to 30% or more；
(3) it greatly reduces and prepares heat preservation riser cost, compared with conventional preparation techniques, cost has dropped 30%
Left and right；
(4) traditional exothermic riser preparation process is simplified, workload is reduced, shortens manufacturing cycle, improves efficiency；
(5) combustion utilization efficiency of exothermic mixture in exothermic riser is improved: the burning of exothermic mixture in traditional heat preservation riser
Utilization rate is 30%~50%, and the combustion utilization efficiency of exothermic mixture is 100% in heat preservation riser of the present invention.
Detailed description of the invention
Fig. 1 is heat preservation riser figure.
In figure, 1- riser buss, 2- permeable formation, 3- heating layer, 4- riser neck.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to this
Embodiment described in text.On the contrary, the purpose of providing these embodiments is that making to the disclosure understanding
It is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", " top ", " bottom ", " bottom end ", " top " and similar statement for illustrative purposes only, be not offered as be
Unique embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff it is identical.Term as used herein in the specification of the present invention is intended merely to retouch
State the purpose of specific embodiment, it is not intended that in the limitation present invention.Term " and or " used herein includes one
Or any and all combinations of multiple relevant listed items.
Embodiment 1
A kind of heat preservation riser refers to shown in attached drawing 1, and the heat preservation riser includes riser buss (1), infiltration
Layer (2) and heating layer (3)；The riser buss (1) is hollow shell；The permeable formation (2) is made of porous coatings；Institute
Heating layer (3) is stated to be made of exothermic paint；The permeable formation (2) is covered on the inner surface of the hollow shell of riser buss (1)；
The heating layer (3) is covered on the outer surface of permeable formation (2).
Further, the riser buss (1) is made of riser buss top and riser buss lower part；The riser buss top and
Riser buss lower part is used cooperatively.
Further, the bottom of the riser buss (1) is equipped with riser neck (4).
Further, the hollow shell of the riser buss (1) is spherical shape；The wall thickness of told riser buss (1) is 16mm.
Further, riser buss (1) the diameter D is 2 times of riser neck (4) diameter d.
Further, in order to reduce the cooling rate of iron liquid, extend the liquid retention time, that is, play the role of heat preservation, institute
Riser buss (1) is stated to be prepared by ceramsite sand, resin and curing agent；The ceramsite sand includes Al2O3、SiO2、Fe2O3、TiO、
MgO and CaO；The mass percent is Al2O355%, SiO242.5%, Fe2O31.5%, TiO 0.5%, MgO 0.3%
With CaO 0.2%.Physical property~dihedral coefficient≤1.1 of ceramsite sand, bulk density: 1.4~1.55g/cm3, expansion rate
0.11%, thermal conductivity after resin: 0.3695W/mK is added, specific heat capacity after resin: 630J/KgK is added.
Further, exothermic mixture generation chemical reaction temperature is too high in order to prevent, and chemistry occurs with outer layer heat-preserving ceramsite sand
Reaction causes riser that scab phenomenon occurs, that is, plays the role of preventing riser scab, the porous coatings include ZrO2、
SiO2、Fe2O3And H2O；The mass percent is ZrO260.7%, SiO230%, Fe2O30.3% and H2O 9%.It is described
The Baume degrees of porous coatings is 40.
Further, in order to discharge a large amount of heat, the temperature of molten metal is improved, that is, plays the role of heat temperature raising, institute
It states exothermic paint and is uniformly made of exothermic material with water based paint.
Further, the exothermic paint is Al powder and Fe2O3The mixed-powder of powder；The Al powder and Fe2O3The purity of powder
It is 99.7%；The Al powder and Fe2O3The granularity of powder is 0.5mm；The Al powder and Fe2O3The mass ratio of powder is 1:3.
Further, the water based paint includes Al2O3、SiO2、Fe2O3, C, S and H2O；The mass percent is
Al2O38%, SiO260.02%, Fe2O36%, C 10%, S 0.08% and H2O 15.72%；The wave of the water based paint
U.S. degree is 40.
Embodiment 2
A kind of heat preservation riser refers to shown in attached drawing 1, and the heat preservation riser includes riser buss (1), infiltration
Layer (2) and heating layer (3)；The riser buss (1) is hollow shell；The permeable formation (2) is made of porous coatings；Institute
Heating layer (3) is stated to be made of exothermic paint；The permeable formation (2) is covered on the inner surface of the hollow shell of riser buss (1)；
The heating layer (3) is covered on the outer surface of permeable formation (2).
Further, the riser buss (1) is made of riser buss top and riser buss lower part；The riser buss top and
Riser buss lower part is used cooperatively.
Further, the bottom of the riser buss (1) is equipped with riser neck (4).
Further, the hollow shell of the riser buss (1) is spherical shape；The wall thickness of told riser buss (1) is 25mm.
Further, riser buss (1) the diameter D is 2 times of riser neck (4) diameter d.
Further, in order to reduce the cooling rate of iron liquid, extend the liquid retention time, that is, play the role of heat preservation, institute
Riser buss (1) is stated to be prepared by ceramsite sand, resin and curing agent；The ceramsite sand includes Al2O3、SiO2、Fe2O3、TiO、
MgO and CaO；The mass percent is Al2O353.05%, SiO244.4%, Fe2O31.5%, TiO 0.55%, MgO
0.3% and CaO 0.2%.
Further, exothermic mixture generation chemical reaction temperature is too high in order to prevent, and chemistry occurs with outer layer heat-preserving ceramsite sand
Reaction causes riser that scab phenomenon occurs, that is, plays the role of preventing riser scab, the porous coatings include ZrO2、
SiO2、Fe2O3And H2O；The mass percent is ZrO260.5%, SiO230.5%, Fe2O30.2% and H2O 8.8%.
The Baume degrees of the porous coatings is 44.
Further, in order to discharge a large amount of heat, the temperature of molten metal is improved, that is, plays the role of heat temperature raising, institute
It states exothermic paint and is uniformly made of exothermic material with water based paint.
Further, the exothermic paint is Al powder and Fe2O3The mixed-powder of powder；The Al powder and Fe2O3The purity of powder
It is 99.8%；The Al powder and Fe2O3The granularity of powder is 1mm；The Al powder and Fe2O3The mass ratio of powder is 1:2.
Further, the water based paint includes Al2O3、SiO2、Fe2O3, C, S and H2O；The mass percent is
Al2O39%, SiO260%, Fe2O35%, C 10%, S 0.06% and H2O 15.94%；The Baume of the water based paint
Degree is 45.
Embodiment 3
A kind of production method of heat preservation riser, comprising the following steps:
S1 prepares the riser buss (1) of hollow shell；
S2 uniformly brushes 2 times porous coatings in the inner surface of riser buss (1) and permeable formation (2) is made；
S3 uniformly brushes 3 times exothermic paints on the surface of permeable formation (2) and heating layer (3) is made, the thickness of heating layer (3)
Degree is about 1.5mm；
S4 dries in 100 DEG C of wind furnace after brushing examines 30min.
Further, 2 times porous coatings are brushed in the S2；The first pass Baume degrees is 65；Second time wave
U.S. degree is 40.
Further, it is 6% that the weight of the heating layer, which accounts for the ratio of riser weight,.
Embodiment 4
A kind of production method of heat preservation riser, comprising the following steps:
S1 prepares the riser buss (1) of hollow shell；
S2 uniformly brushes 2 times porous coatings in the inner surface of riser buss (1) and permeable formation (2) is made；
S3 uniformly brushes 3 times exothermic paints on the surface of permeable formation (2) and heating layer (3) is made, the thickness of heating layer (3)
Degree is about 2mm；
S4 dries in 150 DEG C of wind furnace after brushing examines 30min.
Further, 2 times porous coatings are brushed in the S2；The first pass Baume degrees is 70；Second time wave
U.S. degree is 45.
Further, it is 8% that the weight of the heating layer, which accounts for the ratio of riser weight,.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of heat preservation riser, which is characterized in that the heat preservation riser includes riser buss (1), permeable formation (2) and hair
Thermosphere (3)；
The riser buss (1) is hollow shell；
The permeable formation (2) is made of porous coatings；The heating layer (3) is made of exothermic paint；
The permeable formation (2) is covered on the inner surface of the hollow shell of riser buss (1)；The heating layer (3) is covered on permeable formation
(2) outer surface.
2. heat preservation riser according to claim 1, which is characterized in that the hollow shell of the riser buss (1) is ball
Shape；The wall thickness of the riser buss (1) is greater than 15mm.
3. heat preservation riser according to claim 1, which is characterized in that the riser buss diameter is riser neck diameter
1.5~2.5 times.
4. heat preservation riser according to claim 1, which is characterized in that the riser buss (1) by ceramsite sand, resin and
Curing agent is prepared.
5. heat preservation riser according to claim 1, which is characterized in that the porous coatings include ZrO2、SiO2、
Fe2O3And H2O；The mass percent is ZrO260%~65%, SiO230%~35%, Fe2O30.2%~0.3%,
H2O8%~12%；The Baume degrees of the porous coatings is 30~50.
6. heat preservation riser according to claim 1, which is characterized in that the exothermic paint by exothermic material with it is water base
Coating is uniformly mixed.
7. heat preservation riser according to claim 6, which is characterized in that the exothermic paint is Al powder and Fe2O3Powder
Mixed-powder；The Al powder and Fe2O3The purity of powder is 99.5% or more；The Al powder and Fe2O3The granularity of powder is 0.1
~1mm；The Al powder and Fe2O3The mass ratio of powder is 1:3~1:2.
8. heat preservation riser according to claim 6, which is characterized in that the water based paint includes Al2O3、SiO2、
Fe2O3, C, S and H2O；The mass percent is Al2O38%~10%, SiO260%~65%, Fe2O35%~7%, C
10%~15%, S≤0.08% and H2O 10%~20%；The Baume degrees of the water based paint is 35~60.
9. a kind of production method of heat preservation riser, which comprises the following steps:
S1 prepares the riser buss of hollow shell；
Permeable formation is made in the uniform brushing permeability of inner surface of riser buss in S2；
Heating layer is made in the uniform brushing exothermic paint in the surface of permeable formation in S3；
S4 drying.
10. the production method of heat preservation riser according to claim 9, which is characterized in that the weight of the heating layer
Account for the ratio of riser weight are as follows: 5%~10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456123.9A CN110170616A (en) | 2019-05-30 | 2019-05-30 | Heat preservation riser and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456123.9A CN110170616A (en) | 2019-05-30 | 2019-05-30 | Heat preservation riser and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110170616A true CN110170616A (en) | 2019-08-27 |
Family
ID=67696015
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910456123.9A Pending CN110170616A (en) | 2019-05-30 | 2019-05-30 | Heat preservation riser and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN110170616A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756557A (en) * | 2020-12-31 | 2021-05-07 | 四川共享铸造有限公司 | Atmospheric pressure spherical sand riser sleeve and manufacturing method thereof |
| CN112828241A (en) * | 2021-01-07 | 2021-05-25 | 武汉晴川学院 | Casting heating coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112756557A (en) * | 2020-12-31 | 2021-05-07 | 四川共享铸造有限公司 | Atmospheric pressure spherical sand riser sleeve and manufacturing method thereof |
| CN112828241A (en) * | 2021-01-07 | 2021-05-25 | 武汉晴川学院 | Casting heating coating and preparation method thereof |
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Application publication date: 20190827 |