CN108655376A - Composite construction exothermic riser for spheroidal graphite cast-iron tubular joint - Google Patents
Composite construction exothermic riser for spheroidal graphite cast-iron tubular joint Download PDFInfo
- Publication number
- CN108655376A CN108655376A CN201810513002.9A CN201810513002A CN108655376A CN 108655376 A CN108655376 A CN 108655376A CN 201810513002 A CN201810513002 A CN 201810513002A CN 108655376 A CN108655376 A CN 108655376A
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- CN
- China
- Prior art keywords
- riser
- spheroidal graphite
- graphite cast
- composite construction
- tubular joint
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
- B22D27/06—Heating the top discard of ingots
-
- 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)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention provides a kind of composite construction exothermic riser for spheroidal graphite cast-iron tubular joint, including：Riser cylinder, the riser cylinder body bottom open up feeding mouth, fracture plate layer are arranged in the feeding mouth, the fracture plate layer includes：Grid, the grid is by centrally disposed circular slab and is distributed in and radial around the circular slab several waits for that fragmentation cell beam forms.Convenient for the cleaning and removal of riser, riser can be moved at the position closer from spheroidal graphite cast-iron pipe fitting branch pipe connecting position, it is more firm and close at the branch pipe connecting position to ensure the spheroidal graphite cast-iron pipe fitting of casting completion, further decrease leakage point quantity；Moreover, guarantee will not promote the difficulty of remove feeders process while expanding the bore of feeding mouth, the rejection rate of casting is greatly lowered；Fracture plate layer is conducive to the foundation of peripheral part temperature gradient and the realization of consecutive solidification at spheroidal graphite cast-iron pipe fitting branch pipe connecting position.
Description
Technical field
The invention belongs to riser technical field more particularly to a kind of running gate systems being applied to cast spheroidal graphite cast-iron pipe fitting
Composite construction exothermic riser.
Background technology
The casting process of casting is exactly that running gate system control molten metal stably enters casting mold, and slag and other is prevented to be mingled with
Object enters cavity, and the principle of consecutive solidification is met when so that casting is cooled down as far as possible.It is indispensable in the casting process of casting
One accessory is riser, and riser refers to avoid casting from the supplement portion that defect is attached to casting top or side occur
Point, wherein exothermic mixture is added in exothermic riser in Riser material, and metal liquid energy is made to be kept for the longer time in the liquid state.
When pouring into a mould spheroidal graphite cast-iron pipe fitting, needs at connector casting mold heavy wall and riser is arranged in heat energy-saving position, due to pouring
Noting ductile iron pipe is added in molten iron before cast with magnesium or rare earth magnesium knot alloy nodulizer, and spheroidal graphite cast-iron pipe fitting is compared with pipe
Part structure is more complicated, and therefore, the good feeding performance of riser is most important for cast spheroidal graphite cast-iron pipe fitting.To pour into a mould three
It is illustrated for logical spheroidal graphite cast-iron pipe fitting, in the prior art, if being arranged at the position of corresponding joints end when cast
Dry bulb riser, since the position far from riser first solidifies, and spheroidal graphite cast-iron pipe fitting can cause each emit when pouring temperature is low
Local shrinkage porosite under mouthful, therefore leakage point is more during suppressing, and has focused largely at branch pipe connecting position, therefore cause higher
Rejection rate.It is more firm at branch pipe connecting position to ensure, it is even closer, preferable mode be change the position of riser to from
At branch pipe connecting position at closer position, while expanding feeding mouth, but after casting complete, is not easy at branch pipe connecting position
Easily there is casting damage in remove feeders, can not still reduce rejection rate.
Invention content
It is emitted in order to solve the above technical problems, the present invention provides a kind of composite construction fever for spheroidal graphite cast-iron tubular joint
Mouthful.In order to the embodiment to disclosure some aspects there are one basic understanding, simple summary is shown below.The summary portion
It is not extensive overview to divide, nor to determine key/critical component or describe the protection domain of these embodiments.It is unique
Purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
The present invention adopts the following technical scheme that：
In some optional embodiments, a kind of composite construction exothermic riser for spheroidal graphite cast-iron tubular joint is provided,
Including：Riser cylinder, the riser cylinder body bottom open up feeding mouth, fracture plate layer, the fracture plate are arranged in the feeding mouth
Layer include：Grid, the grid is by centrally disposed circular slab and is distributed in radial several around the circular slab
Wait for that fragmentation cell beam forms.
In some optional embodiments, the fracture plate layer further includes：Outline border, the grid are located in the outline border,
The inner surface in the feeding mouth oral area is arranged in the outline border.
It is described to wait for that fragmentation cell beam includes in some optional embodiments：The width that position is alternately arranged and is sequentially connected
Rectangular slab and narrow rectangular slab, described to wait for that fragmentation cell beam one end is connect with the outline border, the other end is connect with the circular slab.
In some optional embodiments, Crux is set on the circular slab, it is each on four stabilizer blades of the Crux
One fever column vertical with the circular slab is set, and four fever columns stretch into the internal cavities of the riser cylinder and end
Along the top for extending to riser cylinder.
In some optional embodiments, the quantity for waiting for fragmentation cell beam is 2 to 4.
In some optional embodiments, the riser cylinder includes：Pedestal and riser neck on the base is set, institute
State it is intermittent on pedestal open up several rectangle gap, rectangle plug is set at the position of corresponding rectangle gap on the riser neck,
When the riser neck is set on the base, the rectangle plug is embedded in the rectangle gap；The material of the pedestal is
Insulating layer is arranged in the inner surface of precoated sand, the riser neck.
In some optional embodiments, the quantity of the rectangle gap is consistent with the fever quantity of column, is 4, four
Rectangle gap and four fever columns correspond, and the column that generates heat is located at the inner opening of corresponding rectangle gap to the riser cylinder
On the extension path of the internal cavities of body.
In some optional embodiments, the insulating layer is equal by ceramic wool, mineral wool, paper slag, refractory aggregate and resin
It is even mixing and formed.
In some optional embodiments, the riser cylinder further includes：Riser buss, the riser are set on described emit
The top of mouthful neck opens up the gas vent with the connects with the internal cavities of the riser cylinder on the riser buss.
In some optional embodiments, the composite construction exothermic riser for spheroidal graphite cast-iron tubular joint, also
Including：Annular adapter sleeve, the annular fastening are set on the outer surface of the riser neck, and the annular adapter sleeve material is
Steel.
Advantageous effect caused by the present invention：In feeding mouth be arranged fracture plate layer, ensure remove feeders process have compared with
High easness is convenient for the cleaning and removal of riser therefore can be moved to riser and connect from spheroidal graphite cast-iron pipe fitting branch pipe
It is more firm and tight at the branch pipe connecting position to ensure the spheroidal graphite cast-iron pipe fitting of casting completion at the closer position in position
It is close, further decrease leakage point quantity；Moreover, ensureing that while expanding the bore of feeding mouth remove feeders process will not be promoted
Difficulty eliminates the casting damage brought due to remove feeders, also avoid emitting bore it is remaining it is excessive caused by be difficult to polish, from
And the rejection rate of casting is greatly lowered；Also, fracture plate layer is conducive to periphery at spheroidal graphite cast-iron pipe fitting branch pipe connecting position
The foundation of spot temperature gradient and the realization of consecutive solidification.
For above-mentioned and relevant purpose, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes apparent, the disclosed embodiments be all such aspects to be included and they
Be equal.
Description of the drawings
Fig. 1 is the internal structure schematic diagram of composite construction exothermic riser of the present invention；
Fig. 2 is the external structure schematic diagram of composite construction exothermic riser of the present invention；
Fig. 3 is the structural schematic diagram of fracture plate layer of the present invention；
Fig. 4 is the structural schematic diagram of riser neck of the present invention；
Fig. 5 is the structural schematic diagram of pedestal of the present invention；
Fig. 6 is the position view of pedestal of the present invention and fever column.
Specific implementation mode
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.
As shown in Fig. 1 to 5, in some illustrative embodiments, a kind of answering for spheroidal graphite cast-iron tubular joint is provided
Structure heating riser is closed, riser is integrally cylindrical, is arranged in the casting mold for pouring into a mould spheroidal graphite cast-iron pipe fitting, for casting
Metal is fed when part formation, prevents shrinkage cavity and porosity, exhaust, collection slag and feeding.
The present invention composite construction exothermic riser include：Riser cylinder 1, fracture plate layer 2 and annular adapter sleeve 3.Riser cylinder
1 bottom of body opens up feeding mouth 4, and fracture plate layer 2 is arranged in feeding mouth 4, and the appearance in riser cylinder 1 is arranged in annular adapter sleeve 3
Face, 3 material of annular adapter sleeve are steel, for reinforcing riser cylinder 1, riser cylinder 1 in casting process are avoided slight crack, deformation occur
Problem.
Fracture plate layer 2 includes：Grid 21 and outline border 22, grid 21 are located in outline border 22, and the setting of outline border 22 is in 4 mouthfuls of feeding mouth
The inner surface in portion, outline border 22 make feeding mouth 4 have a platform tightened to centre, avoid the fortune of grid 21 before casting
It is defeated and fragmentation occur during moving.Preferably, the thickness of grid 21 is the half of outline border 22, both grid 21 can be protected to exist
Intensity when transport, it is also ensured that 21 force-applied fragmentation of grid when remove feeders.Grid 21 is by centrally disposed circle
Shape plate 23 and be distributed in around circular slab 23 it is radial it is several wait for fragmentation cell beam 24 form, wait for the number of fragmentation cell beam 24
Amount is 2 to 4.In view of spheroidal graphite cast-iron is solidified in a manner of paste, feeding is difficult, and setting fracture plate layer 2, breaks in feeding mouth 4
The volume of frozen metal in feeding mouth 4 can be reduced by splitting plate layer 2, be convenient for the cleaning and removal of riser, ensure the mouth for expanding feeding mouth 4
The difficulty of remove feeders process will not be promoted while diameter.
Wait for that fragmentation cell beam 24 includes：The wide rectangular slab 25 and narrow rectangular slab 26 that position is alternately arranged and is sequentially connected, are waited for
24 one end of fragmentation cell beam is connect with outline border 22, and the other end is connect with the circular slab 23, ensure remove feeders process have compared with
Therefore riser can be moved at the position closer from spheroidal graphite cast-iron pipe fitting branch pipe connecting position, to protect by high easness
It is more firm and close at the branch pipe connecting position for the spheroidal graphite cast-iron pipe fitting that card casting is completed, further decrease leak points
Amount, moreover, meeting the requirement that sand mold intensity is high, iron gold metallurgical quality is excellent.
Crux 5 is set on circular slab 23, be respectively arranged on four stabilizer blades of Crux 5 one it is vertical with circular slab 23
Generate heat column 6, that is, the quantity for the column 6 that generates heat is four, and fever column 6 is mixed with exothermic mixture, such as aluminium powder, silica flour, brown iron oxide, and sends out
Plume 6 is pasted onto by binder on circular slab 23.Four fever columns 6 stretch into the internal cavities of riser cylinder 1 and end edge
The top for extending to riser cylinder 1, carries out the liquid metal in riser cylinder 1 heating in each orientation, and guarantee will not be by
It reduces in temperature and solidifies first, to ensure effective feeding.Four fever columns 6 are in direct contact with Crux 5, when fever column
6 adstante febres, while Crux 5 and circular slab 23 can also be supplemented into trip temperature, avoid 4 diameter of feeding mouth from reducing constant temperature
It can decline.
Riser cylinder 1 includes：Pedestal 11, riser neck 12 and riser buss 13.Wherein, the material of pedestal 11 and fracture plate layer 2
It is precoated sand, an entirety is directly made as through mold, riser neck 12 is pasted on the pedestal 11 by binder, riser buss 13
The top of riser neck 12 is pasted onto by binder.The exhaust with the connects with the internal cavities of riser cylinder 1 is opened up on riser buss 13
Hole 16, for exhaust and blowdown.
It is intermittent on pedestal 11 to open up several rectangle gap 14.It is set at the position of corresponding rectangle gap 14 on riser neck 12
Set rectangle plug 15, i.e. rectangle plug 15 and the quantity of rectangle gap 14 is consistent, when riser neck 12 is set on the pedestal 11,
Rectangle plug 15 is embedded in rectangle gap 14.Insulating layer is arranged in the inner surface of riser neck 12, and insulating layer is by ceramic wool, mineral wool, paper
Slag, refractory aggregate and resin are uniformly mixed and are formed.Since the material of pedestal 11 is precoated sand, while riser neck 12 is interior
There is one layer of heat preservation layer on surface, and therefore, riser cylinder 1 has a temperature gradient, that is, produces an artificial temperature gradient.
As shown in fig. 6, the quantity of rectangle gap 14 is consistent with the fever quantity of column 6, it is 4, can have both formed temperature ladder
Degree, it is also ensured that manufacturing process is unlikely to excessively cumbersome.Four rectangle gap 14 and four fever columns 6 correspond, and generate heat
Column 6 is located on the extension path S of internal cavities of the inner opening of corresponding rectangle gap 14 to riser cylinder 1.Rectangle gap
14, the position of fever column 6 and rectangle plug 15 cooperates so that 1 inside of riser cylinder forms a temperature gradient, ensures this hair
Bright composite construction exothermic riser position of feeding than it solidifies late, and has enough molten metal supplies.To in casting
On establish one from the part far from riser to temperature gradient gradually incremental riser, to realize from far from riser to
Riser direction sequentially solidifies.
Claims (10)
1. for the composite construction exothermic riser of spheroidal graphite cast-iron tubular joint, including：Riser cylinder, the riser cylinder body bottom are opened
If feeding mouth, which is characterized in that fracture plate layer is arranged in the feeding mouth, the fracture plate layer includes：Grid, the grid by
It centrally disposed circular slab and is distributed in and radial around the circular slab several waits for that fragmentation cell beam forms.
2. the composite construction exothermic riser according to claim 1 for spheroidal graphite cast-iron tubular joint, which is characterized in that institute
Stating fracture plate layer further includes：Outline border, the grid are located in the outline border, and the outline border is arranged in the feeding mouth oral area
Surface.
3. the composite construction exothermic riser according to claim 2 for spheroidal graphite cast-iron tubular joint, which is characterized in that institute
It states and waits for that fragmentation cell beam includes：Position is alternately arranged and the wide rectangular slab being sequentially connected and narrow rectangular slab, described to wait for fragmentation cell
Beam one end is connect with the outline border, and the other end is connect with the circular slab.
4. the composite construction exothermic riser according to claim 3 for spheroidal graphite cast-iron tubular joint, which is characterized in that institute
It states and Crux is set on circular slab, a fever vertical with the circular slab is respectively set on four stabilizer blades of the Crux
Column, four fever columns stretch into the internal cavities of the riser cylinder and end is along the top for extending to riser cylinder.
5. the composite construction exothermic riser according to claim 4 for spheroidal graphite cast-iron tubular joint, which is characterized in that institute
It states and waits for that the quantity of fragmentation cell beam is 2 to 4.
6. being used for the composite construction exothermic riser of spheroidal graphite cast-iron tubular joint according to claim 1 or 5, feature exists
In the riser cylinder includes：Pedestal and riser neck on the base is set, it is intermittent on the pedestal to open up several rectangles
Rectangle plug is arranged at the position of corresponding rectangle gap on the riser neck in gap, when the riser neck is embedded in the pedestal
When upper, the rectangle plug is embedded in the rectangle gap；The material of the pedestal is precoated sand, and the inner surface of the riser neck is set
Set insulating layer.
7. the composite construction exothermic riser according to claim 6 for spheroidal graphite cast-iron tubular joint, which is characterized in that institute
The quantity for stating rectangle gap is consistent with the fever quantity of column, is 4, and four rectangle gap and four fever columns correspond, and
Fever column is located at the inner opening of corresponding rectangle gap on the extension path of the internal cavities of the riser cylinder.
8. the composite construction exothermic riser according to claim 7 for spheroidal graphite cast-iron tubular joint, which is characterized in that institute
Insulating layer is stated uniformly to be mixed by ceramic wool, mineral wool, paper slag, refractory aggregate and resin and formed.
9. the composite construction exothermic riser according to claim 7 for spheroidal graphite cast-iron tubular joint, which is characterized in that institute
Stating riser cylinder further includes：Riser buss, the riser are set on the top of the riser neck, are opened up on the riser buss and institute
State the gas vent of the connects with the internal cavities of riser cylinder.
10. the composite construction exothermic riser according to claim 9 for spheroidal graphite cast-iron tubular joint, which is characterized in that
Further include：Annular adapter sleeve, the annular fastening are set on the outer surface of the riser neck, and the annular adapter sleeve material is
Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810513002.9A CN108655376A (en) | 2018-05-25 | 2018-05-25 | Composite construction exothermic riser for spheroidal graphite cast-iron tubular joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810513002.9A CN108655376A (en) | 2018-05-25 | 2018-05-25 | Composite construction exothermic riser for spheroidal graphite cast-iron tubular joint |
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| Publication Number | Publication Date |
|---|---|
| CN108655376A true CN108655376A (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810513002.9A Pending CN108655376A (en) | 2018-05-25 | 2018-05-25 | Composite construction exothermic riser for spheroidal graphite cast-iron tubular joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115106484A (en) * | 2022-07-13 | 2022-09-27 | 重庆市聚财机械制造有限公司 | Rising head structure of tectorial membrane sand casting mould |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115106484A (en) * | 2022-07-13 | 2022-09-27 | 重庆市聚财机械制造有限公司 | Rising head structure of tectorial membrane sand casting mould |
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Application publication date: 20181016 |