CN108705045A - A kind of pilot valve casting and its casting technique - Google Patents
A kind of pilot valve casting and its casting technique Download PDFInfo
- Publication number
- CN108705045A CN108705045A CN201810632276.XA CN201810632276A CN108705045A CN 108705045 A CN108705045 A CN 108705045A CN 201810632276 A CN201810632276 A CN 201810632276A CN 108705045 A CN108705045 A CN 108705045A
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- Prior art keywords
- runner
- mouth
- runner mouth
- iii
- pilot valve
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Classifications
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- 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
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a kind of pilot valve casting, including valve body and valve base, the valve body is cylinder, the valve base is in square, the valve body is internally provided with runner, the runner includes upper runner and lower flow channel, the upper runner and the lower flow channel unicom, the upper runner includes runner I, runner II, runner III, runner IV and runner V, the runner I respectively with V unicom of the runner II, runner IV and runner, the runner II and V unicom of the runner III, runner IV and runner.The invention also discloses a kind of casting techniques of pilot valve casting.The present invention the runner of pilot valve casting, the structure of runner mouth and runner mouth diameter design it is reasonable, the casting has the advantages that integrated level is high, highly reliable, with long service life, the casting technique of the pilot valve casting of the present invention reduces stomata, bubble in casting process, and casting qualified rate greatly improves.
Description
Technical field
The present invention relates to a kind of valve body moulding more particularly to a kind of pilot valve casting and its casting techniques.
Background technology
With the development of industrial technology, purposes of the hydraulic control system on Mechanical course and industrial valve is more and more wider
It is general.Automatic foundamental element of the pilot valve casting as control flow direction, has high, highly reliable, long lifespan of integrated level etc.
Advantage, performance and service life largely decide the stationarity and ability to work of entire hydraulic system.
Existing pilot valve casting has the following disadvantages：Sand core gas forming amount in preparation process is big among casting die, sand
Core cannot be vented in time causes the stomata on pilot valve casting more, and rate of wasted casting product is caused to be up to 70%；On the other hand, because of elder generation
Pilot valve casting runner is too small and complicated, and the gas exclusion in casting process in sand core is unsmooth, makees in molten iron casting and high temperature
It is easily broken with lower smaller sand core.
Therefore, it is necessary to be improved the need that could meet hydraulic control system to pilot valve casting in the prior art
It asks.
Invention content
That in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of stability is good, service life is long, casting is qualified
The high pilot valve casting of rate and its casting technique.
The present invention is achieved by the following technical solutions：
A kind of pilot valve casting, including valve body and valve base, the valve body is cylinder, and the valve base is in four directions
Shape, the valve body are internally provided with runner, and the runner includes upper runner and lower flow channel, the upper runner and the lower flow channel
Unicom, the upper runner include runner I, runner II, runner III, runner IV and runner V, the runner I respectively with the runner
II, V unicom of runner IV and runner, the runner II and V unicom of the runner III, runner IV and runner.
Further, the runner I, runner II, runner III and lower flow channel are vertical runner, the runner IV and the stream
Road V is curved channel.
Further, the runner mouth includes runner mouth I, runner mouth II, runner mouth III, runner mouth IV, V and of runner mouth
Flow down road junction, and the runner mouth I is set to the top center of the valve body, the runner mouth II, runner mouth III, runner
Mouth IV and runner mouth V are arranged in the outside of the runner mouth I, and the dirty road junction is set to the bottom of the valve body.
Further, the runner I, runner II, runner III, runner IV, runner V and lower flow channel respectively with runner mouth I,
Runner mouth II, runner mouth III, runner mouth IV, runner mouth V and dirty road junction are corresponding.
Preferably, the runner mouth I, runner mouth IV and runner mouth V are one, the runner mouth II, III and of runner mouth
Dirty road junction is four.
Preferably, four runner mouths III are distributed in quadrangle around the runner mouth I, the runner mouth I
Diameter is more than the diameter of the runner mouth III.
Further, the diameter of the runner mouth II is less than the diameter of the runner mouth III, and four runner mouths II are in
Quadrangle is evenly distributed on around the runner mouth I.
Preferably, the runner mouth IV and the runner mouth V are symmetrically disposed on I both sides of runner mouth, the runner mouth
The diameter of IV diameter and the runner mouth V is equal.
Further, the diameter of the diameter of the runner mouth IV and the runner mouth III is equal, the runner mouth III, runner
Mouthful IV and runner mouth V is hexagonal is evenly distributed on around the runner mouth I.
A kind of casting technique of pilot valve casting, includes the following steps：
S1, prepare die for making core, check mold and the impurity such as dust on mold are cleaned out；
S2, sand core is made using high-strength low precoated sand of getting angry, reinforcing bar conduct is placed in the main aperture of main core in manufacturing process
Arbor, and vent wire is placed in mold, it penetrates sand and after the completion rotates vent wire, after main core sizing, taken off using releasing agent
Mould；
S3, small core is made, using the exhaust hole tool drilling of aluminium profiles twist drill, is bored using the core location control of drilling guide sleeve
The length of the up rightness and control drilling in hole,
S4, to main core and small core prebake conditions, and repair except the burr on main core, small core, remove transition nozzle in main core,
S5, it is sticked with tooling fixation main core by sand core, small core is assembled into main core respectively,
S6, prepare arenaceous shell, assembled sand core be installed in arenaceous shell,
S7, it is poured into a mould simultaneously using the thin cast gate both sides in side, places special chill in arenaceous shell bottom, protected in sandbox after cast
Temperature.
After S8, valve body molding, the main core and small core in valve body are defeated and dispersed under high temperature action, to form body cavity stream
Road.
The pilot valve casting and its casting technique of the present invention, has the advantages that：
(1) runner of pilot valve casting of the invention, the structure of runner mouth and runner mouth diameter design are reasonable, meet elder generation
The use demand of pilot valve casting；
(2) pilot valve casting tensile strength of the invention is not less than 300MPa, hardness 190-230HBW, which has
High, highly reliable, the with long service life advantage of integrated level；
(3) casting technique of pilot valve casting of the invention bores exhaust hole tool using the design of aluminium profiles plate, and drill guide sleeve
Core location control drilling up rightness and control drilling length, effectively raise sand core drilling success rate, reduce
Stomata, bubble in casting process, casting qualified rate greatly improve.
Description of the drawings
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical scheme of the present invention
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only the embodiment of the present invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the vertical view of the pilot valve casting of the present invention；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is the B-B sectional views of Fig. 1；
Fig. 4 is the C-C sectional views of Fig. 1；
Fig. 5 is the D-D sectional views of Fig. 1；
Fig. 6 is the E-E sectional views of Fig. 1；
Fig. 7 is the side view of the pilot valve casting of the present invention；
Fig. 8 is the rearview of the pilot valve casting of the present invention.
Wherein, reference numeral corresponds in figure：1- valve bodies, 2- valve bases, 3- runners, 4- runner mouths, 31- runners I,
32- runners II, 33- runners III, 34- runners IV, 35- runners V, 36- lower flow channels, 41- runners mouth I, 42- runners mouth II, 43-
Runner mouth III, 44- runners mouth IV, 45- runners mouth V, 46- flow down road junction.
Specific implementation mode
Below in conjunction with the attached drawing in the present invention, the technical solution in example is applied to the present invention and is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work,
It shall fall within the protection scope of the present invention.
Please refer to Fig.1-8.As shown in figures 1-8, the invention discloses a kind of pilot valve casting, including valve body 1 and valve bottom
Seat 2, the valve body 1 is cylinder, and the valve base 2 is in square, and the valve body 1 is internally provided with runner 3, the stream
Road 3 includes upper runner and lower flow channel 36,36 unicom of the upper runner and the lower flow channel, which is characterized in that the upper runner packet
Include runner I 31, runner II 32, runner III 33, runner IV 34 and runner V 35, the runner I 31 respectively with the runner II 32,
V 35 unicom of runner IV 34 and runner, the runner II 32 and V 35 unicom of the runner III 33, runner IV 34 and runner.
The runner I 31, runner II 32, runner III 33 and lower flow channel 36 are vertical runner, the runner IV 34 and described
Runner V 35 is curved channel.
The runner mouth 4 includes runner mouth I 41, runner mouth II 42, runner mouth III 43, runner mouth IV 44, runner mouth V 45
With dirty road junction 46, the runner mouth I 41 is set to the top center of the valve body 1, the runner mouth II 42, runner
Mouth III 43, runner mouth IV 44 and runner mouth V 45 are arranged in the outside of the runner mouth I 41, and the dirty road junction 46 is set to institute
State the bottom of valve body 1.
The runner I 31, runner II 32, runner III 33, runner IV 34, runner V 35 and lower flow channel 36 respectively with runner mouth
I 41, runner mouth II 42, runner mouth III 43, runner mouth IV 44, runner mouth V 45 and dirty road junction 46 are corresponding.
The runner mouth I 41, runner mouth IV 44 and runner mouth V 45 are one, the runner mouth II 42, runner mouth III
43 and dirty road junction 46 be four.
Four runner mouths III 43 are distributed in quadrangle around the runner mouth I 41, the runner mouth I 41 it is straight
Diameter is more than the diameter of the runner mouth III 43.
The diameter of the runner mouth II 42 is less than the diameter of the runner mouth III 43, and four runner mouths II 42 are in four sides
Shape is evenly distributed on around the runner mouth I 41.
The runner mouth IV 44 and the runner mouth V 45 are symmetrically disposed on I 41 both sides of runner mouth, the runner mouth
The diameter of IV 44 diameter and the runner mouth V 45 is equal.
The diameter of the diameter of the runner mouth IV 44 and the runner mouth III 43 is equal, the runner mouth III 43, runner mouth
IV 44 and runner mouth V 45 is hexagonal is evenly distributed on around the runner mouth I 41.
The important technological parameters of the pilot valve casting of the present invention are as follows：
(1) material：Grey cast-iron；
(2) ontology tensile strength：≥300MPa；
(3) hardness：190-230HBW；
(4) without casting flaws such as slag inclusion, stomata, shrinkage porosite, shrinkage cavity, spallings；
(5) weight：4.1Kg.
The invention also discloses a kind of casting techniques of pilot valve casting, include the following steps：
S1, prepare die for making core, check mold and the impurity such as dust on mold are cleaned out；
S2, sand core is made using high-strength low precoated sand of getting angry, reinforcing bar conduct is placed in the main aperture of main core in manufacturing process
Arbor, and vent wire is placed in mold, it penetrates sand and after the completion rotates vent wire, after main core sizing, taken off using releasing agent
Mould；
S3, small core is made, using the exhaust hole tool drilling of aluminium profiles twist drill, is bored using the core location control of drilling guide sleeve
The length of the up rightness and control drilling in hole,
S4, to main core and small core prebake conditions, and repair except the burr on main core, small core, remove transition nozzle in main core,
S5, it is sticked with tooling fixation main core by sand core, small core is assembled into main core respectively,
S6, prepare arenaceous shell, assembled sand core be installed in arenaceous shell,
S7, it is poured into a mould simultaneously using the thin cast gate both sides in side, places special chill in arenaceous shell bottom, protected in sandbox after cast
Temperature.
After S8, valve body molding, the main core and small core in valve body are defeated and dispersed under high temperature action, to form body cavity stream
Road.
The pilot valve casting and its casting technique of the present invention, has the advantages that：
(1) runner of pilot valve casting of the invention, the structure of runner mouth and runner mouth diameter design are reasonable, meet elder generation
The use demand of pilot valve casting；
(2) pilot valve casting tensile strength of the invention is not less than 300MPa, hardness 190-230HBW, which has
High, highly reliable, the with long service life advantage of integrated level；
(3) casting technique of pilot valve casting of the invention bores exhaust hole tool using the design of aluminium profiles plate, and drill guide sleeve
Core location control drilling up rightness and control drilling length, effectively raise sand core drilling success rate, reduce
Stomata, bubble in casting process, casting qualified rate greatly improve.
Claims (10)
1. a kind of pilot valve casting, including valve body (1) and valve base (2), the valve body (1) is cylinder, the valve bottom
Seat (2) is in square, and the valve body (1) is internally provided with runner (3), and the runner (3) includes upper runner and lower flow channel
(36), the upper runner and the lower flow channel (36) unicom, which is characterized in that the upper runner includes runner I (31), runner II
(32), runner III (33), runner IV (34) and runner V (35), the runner I (31) respectively with the runner II (32), runner
IV (34) and runner V (35) unicom, the runner II (32) and the runner III (33), runner IV (34) and runner V (35)
Unicom.
2. a kind of pilot valve casting according to claim 1, which is characterized in that the runner I (31), runner II (32),
Runner III (33) and lower flow channel (36) are vertical runner, and the runner IV (34) and the runner V (35) are curved channel.
3. a kind of pilot valve casting according to claim 1 or 2, which is characterized in that the runner mouth (4) includes runner mouth
I (41), runner mouth II (42), runner mouth III (43), runner mouth IV (44), runner mouth V (45) and dirty road junction (46), it is described
Runner mouth I (41) is set to the top center of the valve body (1), the runner mouth II (42), runner mouth III (43), stream
Road junction IV (44) and runner mouth V (45) are arranged in the outside of the runner mouth I (41), and the dirty road junction (46) is set to institute
State the bottom of valve body (1).
4. a kind of pilot valve casting according to claim 3, which is characterized in that the runner I (31), runner II (32),
Runner III (33), runner IV (34), runner V (35) and lower flow channel (36) respectively with runner mouth I (41), runner mouth II (42), stream
Road junction III (43), runner mouth IV (44), runner mouth V (45) and dirty road junction (46) it is corresponding.
5. a kind of pilot valve casting according to claim 4, which is characterized in that the runner mouth I (41), runner mouth IV
(44) and runner mouth V (45) is one, and the runner mouth II (42), runner mouth III (43) and dirty road junction (46) are four
It is a.
6. a kind of pilot valve casting according to claim 5, which is characterized in that four runner mouths III (43) are in four sides
Shape is distributed in around the runner mouth I (41), and the diameter of the runner mouth I (41) is more than the straight of the runner mouth III (43)
Diameter.
7. a kind of pilot valve casting according to claim 1 or 6, which is characterized in that the diameter of the runner mouth II (42)
Less than the diameter of the runner mouth III (43), four runner mouths II (42) are evenly distributed on the runner mouth I in quadrangle
(41) around.
8. a kind of pilot valve casting according to claim 7, which is characterized in that the runner mouth IV (44) and the runner
V (45) of mouth are symmetrically disposed on I (41) both sides of the runner mouth, the diameter and the runner mouth V of the runner mouth IV (44)
(45) diameter is equal.
9. a kind of pilot valve casting according to claim 8, which is characterized in that the diameter of the runner mouth IV (44) and institute
The diameter for stating runner mouth III (43) is equal, and the runner mouth III (43), runner mouth IV (44) and runner mouth V (45) are hexagonal
It is evenly distributed on around the runner mouth I (41).
10. a kind of casting technique of pilot valve casting, which is characterized in that include the following steps：
S1, prepare die for making core, check mold and the impurity such as dust on mold are cleaned out；
S2, sand core is made using high-strength low precoated sand of getting angry, reinforcing bar is placed in the main aperture of main core in manufacturing process as arbor,
And vent wire is placed in mold, it penetrates sand and after the completion rotates vent wire, after main core sizing, demoulded using releasing agent；
S3, small core is made, using the exhaust hole tool drilling of aluminium profiles twist drill, is drilled using the core location control of drilling guide sleeve
The length of up rightness and control drilling；
S4, to main core and small core prebake conditions, and repair except the burr on main core, small core, remove transition nozzle in main core；
S5, it is sticked with tooling fixation main core by sand core, small core is assembled into main core respectively；
S6, prepare arenaceous shell, assembled sand core is installed in arenaceous shell；
S7, it is poured into a mould simultaneously using the thin cast gate both sides in side, special chill is placed in arenaceous shell bottom, in sandbox inside holding after cast；
After S8, valve body molding, the main core and small core in valve body are defeated and dispersed under high temperature action, to form body cavity runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632276.XA CN108705045A (en) | 2018-06-19 | 2018-06-19 | A kind of pilot valve casting and its casting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632276.XA CN108705045A (en) | 2018-06-19 | 2018-06-19 | A kind of pilot valve casting and its casting technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108705045A true CN108705045A (en) | 2018-10-26 |
Family
ID=63871862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810632276.XA Withdrawn CN108705045A (en) | 2018-06-19 | 2018-06-19 | A kind of pilot valve casting and its casting technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108705045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479966A (en) * | 2019-09-10 | 2019-11-22 | 南通华东油压科技有限公司 | Multiple flow passages revolving body casting, multiple flow passages revolving body and the casting mold for being poured multiple flow passages revolving body casting |
-
2018
- 2018-06-19 CN CN201810632276.XA patent/CN108705045A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479966A (en) * | 2019-09-10 | 2019-11-22 | 南通华东油压科技有限公司 | Multiple flow passages revolving body casting, multiple flow passages revolving body and the casting mold for being poured multiple flow passages revolving body casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181026 |
|
| WW01 | Invention patent application withdrawn after publication |