CN110405157A - A kind of casting installation method of venting plug - Google Patents
A kind of casting installation method of venting plug Download PDFInfo
- Publication number
- CN110405157A CN110405157A CN201810399862.4A CN201810399862A CN110405157A CN 110405157 A CN110405157 A CN 110405157A CN 201810399862 A CN201810399862 A CN 201810399862A CN 110405157 A CN110405157 A CN 110405157A
- Authority
- CN
- China
- Prior art keywords
- venting plug
- core
- sand
- casting
- venting
- Prior art date
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
Abstract
The invention discloses a kind of installation methods of casting venting plug, use venting plug made of the casting model powder for being greater than coremaking core sand fineness of sand, using mo(u)lding line produce in worker's operating process that every mould is repaired, the corresponding position above-mentioned venting plug being placed into mold, venting plug is directly mounted in sand core during coremaking, avoid the previous operating method for needing another one ground bonding venting plug after the completion of coremaking, artificial and glue is saved, a group core beat is also substantially reduced, the bottleneck of production capacity is breached；In addition, being also effectively prevented from the phenomenon that previous venting plug is easy to fall off in transport process, to reduce type chamber into sand probability, sand hole rejection rate is reduced, product quality is effectively improved.
Description
Technical field
The invention belongs to casting core process gases technical fields, more particularly, to a kind of row of turbine case sand core for casting
The installation method of vent plug.
Background technique
Sand casting process is a kind of casting method for preparing casting mold for main Modeling Material with sand, and most traditional casting
Method is made, do not limited by part shape, size, complexity and alloy species since sand casting has, is with short production cycle,
The features such as at low cost, sand casting remain most widely used casting method in casting industry production, are particularly suitable for single-piece
Or small lot castings production；Core assembling technology, i.e., produce casting with group core technology, and group core is composed of single sand core；In moulding
In line sandbox, since what is be stuffed entirely with around sand core is baked sand, so sand core generallys use shell cored, and in order to prevent
Rise by case, runout and type chamber into sand, is usually sealed with screw locking or using joint sealing cream between shell, in order to give sand core type chamber
Exhaust, usually designs several gas vents, these gas vents need to be blocked with several venting plugs, and traditional does on upper shell core
Method is that first upper shell core is made with core-making method, and venting plug is singly manually then sticked to upper casing with glue in dependence
The place for needing to be vented on core, this way substantially prolong a group pitch time for core operation, often become the bottle of production production capacity
Neck, and in transport process, glued venting plug is also easy to fall off, and causes very cavity and wastes into sand, sand holes waste product
A large amount of working hour and glue special, it is how more reliable and efficiently installation venting plug becomes class of group core operation
Topic.
The Chinese invention patent of Publication No. CN105921695A discloses a kind of venting plug and a kind of casting technique, described
One end of venting plug main body is opening, and the other end opens up multiple air discharge ducts, the air discharge duct and the open connection, the opening
It is connected to the gas vent of the mold, frustum, the axial direction of the frustum is equipped in the venting plug main body for open up air discharge duct one end
Consistent with the die sinking direction of shaping mould of sand core tool, a kind of casting technique is the mold in sand core molding in molding sand core
The venting plug is set on interior gas vent, and sand core is inverted in venting plug corresponding position formation one in in-mold molding
Circular cone hole, molten metal bath is close to sand core shape the surface of casting is made to form corresponding metal frustum when pouring product, makes
Gas and impurity concentrate at metal frustum, extra metal frustum are cut away after molding from product again, to reduce gas
Influence with impurity to casting ontology, but the exhaust plug structure is more complicated, and conventional cast factory cannot voluntarily process, and need
The step of individually outer customization of committee, processing cost are high, and casting finished products finally need to increase cutting excess metal frustum together, therefore
The requirement that the technical solution of foregoing invention can not fully meet and further increase casting production efficiency, reduce production cost.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of installations of casting venting plug
Venting plug is installed to required position in the operation process of maintenance die by method, is embedded in venting plug directly in coremaking
On sand core, firmly it is linked together with sand core, has the advantages that easy to operate, high production efficiency.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of installation method of casting venting plug of the invention, selecting fineness of sand is the casting model powder of 200 mesh, uses common casting
Core-making method is made, cylindrical shape is made into and is used as venting plug；Quiet mould and dynamic model made of core sand pass through group core
Technique constitutes upper casing die casting type chamber, and after the taking-up of every mould product, type is intracavitary may all to remain clout, impurity or type chamber office
The situation of portion's breakage, master worker require to repair upkeep operation to quiet mould and dynamic model, this is a necessary job step
Suddenly；For the quiet mould in upper casing mold, in the venting plug positioning pin for the position setting cylindrical type for needing to be vented, the positioning pin with
It is connected through a screw thread between quiet mould, the positioning pin diameter needs to consider and venting plug inner circle diametric fit, it then follows hole shaft clearance
Cooperation guarantees do not occur tension or excessively loose phenomenon when venting plug installation, and it is deep that the positioning pin height is designed as venting plug internal diameter
2/3rds or so of degree do not shake after guaranteeing venting plug installation.
For the dynamic model in mold, cylindrical groove, the groove are provided in above-mentioned quiet mould positioning pin corresponding position
Coaxial with the guarantee of above-mentioned venting plug positioning pin, concentricity is less than the concentricity of core box set pin sleeve, to be vented when guaranteeing molding
Plug will not be broken up；The groove diameter needs to cooperate with venting plug outside diameter, it then follows hole axle clearance fit, when guaranteeing molding
Dynamic model does not squeeze venting plug；The depth of groove is approximately equal to the half of venting plug height, to guarantee that exhaust is plugged with after the completion of coremaking
Approximately half of height is exposed to shell core, in order to be vented；The groove floor and venting plug top surface are between appropriate
Gap, dynamic model will not crush venting plug when guaranteeing molding.
In coremaking, it is only necessary to several venting plugs be mounted on the positioning pin of quiet mould by above step, then mold, make
Core, after the completion of coremaking, each venting plug is just firmly embedded on upper shell core, is integrally formed with upper shell core；Due to system
The fineness of sand of core sand used in shell core is between 70~140 mesh on work, and the fineness of sand of venting plug is 200 mesh or so, in molten iron
The medium-sized intracavitary gas of casting process will pass through venting plug discharge type chamber.
Compared with prior art, the beneficial effects of the present invention are:
A kind of installation method of casting venting plug of the invention utilizes what will be carried out after mould production every in Foundry Production
Mold repair operating process is put into venting plug the corresponding position of die for making core, and directly venting plug is embedded in coremaking
It on shell core, is firmly linked together with upper shell core, uses one one, glue doing so avoids individually artificial again in later period group core
Venting plug is glued aly, has been saved artificial and glue, has also been substantially reduced a group core pitch time, breach the bottleneck of production capacity；In addition,
It is also effectively prevented from the phenomenon that previous venting plug is easy to fall off in transport process, to reduce type chamber into sand probability, drop
Low sand hole rejection rate, effectively improves product quality.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of the installation method of casting venting plug of the invention.
Fig. 2 is that venting plug g of the invention is embedded in the longitudinal sectional drawing in shell core.
Fig. 3 is partial enlarged view at the A of Fig. 2.
Fig. 4 is the schematic diagram that positioning pin is arranged on quiet mould of the invention.
Fig. 5 is that a kind of casting of the invention is installed to the schematic diagram on quiet mould positioning pin with venting plug.
Fig. 6 is that a kind of casting of the invention is embedded in the schematic diagram in upper shell core with venting plug.
In figure: 1, venting plug g, 2, upper shell core, 3, quiet mould, 4, positioning pin a, 5, positioning pin b, 6, positioning pin c, 7, positioning pin
D, 8, positioning pin e, 9, positioning pin f, 10, positioning pin g, 11, positioning pin h, 12, venting plug a, 13, venting plug b, 14, venting plug c,
15, venting plug d, 16, venting plug e, 17, venting plug f, 19, venting plug h, 20, groove, 21, dynamic model.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, technical solution of the present invention is clearly and completely described, is shown
So, the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
A kind of casting of turbine case is made of core assembling technology, which has used upper shell core 2 and lower shell core, on
Shell core 2 and lower shell core be all made of core-making process, wherein upper shell core 2 is that die for making core as shown in Figure 2 processes,
Type chamber is mainly fastened by quiet mould 3 and dynamic model 21；Needing the position that is vented to be provided with venting plug g1, on quiet mould 3 with row
The corresponding position vent plug g1 is provided with positioning pin g10, the position setting fluted 20 corresponding with venting plug g1 on dynamic model 21；On
Shell core 2 be in the type chamber inject core sand after by pressure maintaining manufactured sand core, since sand core is compacted in type chamber, venting plug
G1 is just embedded on made upper shell core 2 without falling off after die sinking.
As shown in Figure 3, it is shown that the groove 20 on positioning pin g10 and dynamic model 21 on venting plug g1 and quiet mould 3 is in mold
Tight later mutual cooperation state is closed, wherein the shape of venting plug g1 is the cylindrical body of outer diameter Φ 9mm, height 8.7mm, by
Fineness of sand is made of the casting model powder of 200 mesh, and the inside of venting plug g1 is the blind hole knot of internal diameter Φ 4.2mm, height 6.2mm
Structure, for covering the positioning pin g10 on mould 3 in meditation；The height that positioning pin g10 on quiet mould 3 exposes quiet 3 surface of mould is 5.7mm, i.e.,
For blind via bottom with venting plug g1 there are the gap of 0.5mm, the outer diameter of positioning pin g10 is also Φ 4.2mm, but has a 1:50's
Taper enables venting plug g1 to be relatively easily inserted into positioning pin g10 and will not loosen；Groove 20 on dynamic model 21 is one
The blind hole of internal diameter Φ 9.5mm, distance of the blind via bottom apart from quiet 3 surface of mould is 8.8mm under molding state, to guarantee dynamic model
21 20 bottom of groove, which will not be pressed onto venting plug g1, makes its deformation, and the depth of groove 20 is 4.8mm, is slightly larger than venting plug g1
The half 4.35mm of height can guarantee that upper shell core 2 is made later venting plug g1 and has the height of about half to be exposed at shell core 2 in this way
Outside in order to subsequent exhaust.
As shown in figure 4, quiet mould 3 is both provided with positioning pin, i.e. positioning pin a4, positioning pin in the place for needing to install venting plug
B5, positioning pin c6, positioning pin d7, positioning pin e8, positioning pin f9, positioning pin g10, positioning pin h11；As shown in figure 5, each positioning
One venting plug of corresponding installation on pin, i.e. venting plug a12, venting plug b13, venting plug c14, venting plug d15, venting plug e16, row
Vent plug f17, venting plug g1, venting plug h19；After installing venting plug, sand is penetrated in molding, when die sinking takes shell core 2 after the completion, as
State shown in Fig. 6, all venting plugs are all embedded in the inside of shell core 2, form an entirety with upper shell core 2.
A kind of casting of the present invention installation method of venting plug, process flow is as shown in Figure 1, be first turned on
Then shell core die for making core is attached to venting plug on the venting plug positioning pin of quiet mould, then the quiet mould and dynamic model of die for making core
It shares, penetrates sand coremaking, upper shell core is taken out in finally die sinking, and such venting plug just becomes an entirety with upper shell core；Due to production
The fineness of sand of core sand used in upper shell core is between 70~140 mesh, and the fineness of sand of venting plug is 200 mesh or so, is poured in molten iron
The medium-sized intracavitary gas of note process will pass through venting plug discharge type chamber.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of installation method of core-making by casting venting plug, it is characterised in that: step is to open the coremaking mould of upper shell core (2)
Tool, is attached to multiple venting plugs on multiple positioning pins of quiet mould (3), and then the quiet mould (3) of die for making core and dynamic model (21) are closed
Firmly, sand coremaking is penetrated, finally die sinking is taken out upper shell core (2), and venting plug is embedded in shell core (2) to be become with upper shell core (2)
One.
2. a kind of installation method of core-making by casting venting plug according to claim 1, it is characterised in that: the exhaust
Plug is made of casting model powder.
3. a kind of installation method of core-making by casting venting plug according to claim 2, it is characterised in that: the exhaust
The fineness of sand of plug is 200 mesh.
4. a kind of installation method of core-making by casting venting plug according to claim 1, it is characterised in that: the quiet mould
(3) multiple positioning pins for installing venting plug are provided on.
5. a kind of installation method of core-making by casting venting plug according to claim 1, it is characterised in that: the dynamic model
(21) multiple grooves for protecting venting plug are provided on.
6. a kind of installation method of core-making by casting venting plug according to claim 1, it is characterised in that: the upper casing
Core sand fineness of sand used in core (2) is within the scope of 70~140 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399862.4A CN110405157A (en) | 2018-04-28 | 2018-04-28 | A kind of casting installation method of venting plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399862.4A CN110405157A (en) | 2018-04-28 | 2018-04-28 | A kind of casting installation method of venting plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110405157A true CN110405157A (en) | 2019-11-05 |
Family
ID=68356947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810399862.4A Pending CN110405157A (en) | 2018-04-28 | 2018-04-28 | A kind of casting installation method of venting plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110405157A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009255155A (en) * | 2008-04-21 | 2009-11-05 | Toyota Motor Corp | Die structure for molding core and method for positioning vent plug |
| CN203526473U (en) * | 2013-10-29 | 2014-04-09 | 江苏中联铝业有限公司 | Exhaust device for wheel mold threaded plug |
| CN105921695A (en) * | 2016-05-18 | 2016-09-07 | 上海皮尔博格有色零部件有限公司 | Exhaust plug and casting process |
| CN205927001U (en) * | 2016-07-21 | 2017-02-08 | 济南圣泉倍进陶瓷过滤器有限公司 | Air exhausting device for casting |
-
2018
- 2018-04-28 CN CN201810399862.4A patent/CN110405157A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009255155A (en) * | 2008-04-21 | 2009-11-05 | Toyota Motor Corp | Die structure for molding core and method for positioning vent plug |
| CN203526473U (en) * | 2013-10-29 | 2014-04-09 | 江苏中联铝业有限公司 | Exhaust device for wheel mold threaded plug |
| CN105921695A (en) * | 2016-05-18 | 2016-09-07 | 上海皮尔博格有色零部件有限公司 | Exhaust plug and casting process |
| CN205927001U (en) * | 2016-07-21 | 2017-02-08 | 济南圣泉倍进陶瓷过滤器有限公司 | Air exhausting device for casting |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191105 |