CN109175258A - A kind of manufacturing method of novel directional control valve casting - Google Patents
A kind of manufacturing method of novel directional control valve casting Download PDFInfo
- Publication number
- CN109175258A CN109175258A CN201811066057.6A CN201811066057A CN109175258A CN 109175258 A CN109175258 A CN 109175258A CN 201811066057 A CN201811066057 A CN 201811066057A CN 109175258 A CN109175258 A CN 109175258A
- Authority
- CN
- China
- Prior art keywords
- small core
- core
- crab
- control valve
- directional control
- 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
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- 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
- B22C9/10—Cores; Manufacture or installation of cores
Abstract
The invention discloses a kind of manufacturing methods of novel directional control valve casting, including the following steps are included: S1: production novel directional control valve casting die；S2: installation clip；S3: after mold is installed, by cope shell, drag sheel insertion sandbox, the cavity between cope shell, drag sheel outer surface and sandbox inside is covered with layer of sand, is equipped with the pouring and riser systems being connected to shell mould in layer of sand；S4: pouring molten iron molding.The advantage of the invention is that the size of casting runner accurately can be controlled, and the deformation extent of runner folder gear is controlled, improve the qualification rate of casting finished products, it is ensured that equipment hydraulic control system has longer service life.
Description
Technical field
The present invention relates to valve body casting technology field, the manufacturing method of specifically a kind of novel directional control valve casting.
Background technique
Mechanical-hydraulic valve body is the general of domestic high-end hydraulic valve user as construction machinery hydraulic system key components and parts
All over demand, though China is at present machine-building big country, industry is greatly without strong, low-and-medium-grade products excess capacity, high-grade hydraulic member
Part almost all relies on import, and the development of Hydraulic Industry seriously lags behind the development of host industry, and becoming restriction is equipment manufacturing
The main bottleneck of industry development.Directional control valve is agriculture project machinery hydraulic system key components and parts, integrated level height, space
Structure is complicated, and country's almost all relies on import at present, and product price is high, and maintenance is inconvenient, how to obtain a kind of manufacture essence
Degree is high, and the small method of the deformation of casting, is the important topic to be solved instantly when manufacture.
Summary of the invention
It is high that the purpose of the present invention is to provide a kind of accuracies of manufacture, casting deformation small novel directional control valve when manufacture
The manufacturing method of body casting, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of manufacturing method of novel directional control valve casting, comprising the following steps:
S1: production novel directional control valve casting die, the mold is by upper die and lower die, sand core and pouring and riser systems group
At；The sand core includes lateral crab, the small core of first longitudinal direction, the small core of N-shaped, twoThe small core of type and the small core of auxiliary；It is described auxiliary
Small core is helped to be made into integration by laterally small core and three small cores in longitudinal direction；The transverse direction crab is horizontally placed in the lower die, described
The top of the small core of first longitudinal direction is connect with the middle position of the lateral crab, forms T font, the small core of N-shaped is set
It sets the two sides in the small core of the first longitudinal direction and is located at the top of the lateral crab, be connected with the lateral crab, institute
State twoThe small core of type is symmetricly set on the two sides of the small core of the N-shaped, and connect with the lateral crab；The auxiliary is small
Core is set to the front of the lateral crab, and three small cores in longitudinal direction of the small core of auxiliary are respectively arranged at described first
Longitudinal small core, twoThe front of the lower section of the small core of type, and by link block respectively with the small core of the first longitudinal direction, twoThe lower section of the small core of type connects；The cavity of novel directional control valve body is formed after the upper die and lower die molding with sand core；
S2: installation clip, it will be described two by clipThe upper section of the small core of type is fixed, for keeping in casting
Section is parallel to each other indeformable；
S3: after mold is installed, cope shell, drag sheel are embedded in sandbox, cope shell, drag sheel outer surface and sand
Cavity between on the inside of case is covered with layer of sand, is equipped with the pouring and riser systems being connected to shell mould in layer of sand；
S4: pouring molten iron, pouring temperature are 1380 DEG C -1420 DEG C, duration of pouring 25s-28s, 1520 DEG C of tapping temperature -
1540 DEG C, molding.
Further, in the step S1, the transverse direction crab, the small core of first longitudinal direction, the small core of N-shaped, twoType is small
Core is in the same plane.
Further, in the step S1, plane where the small core of auxiliary and the lateral crab, first longitudinal direction
The small core of small core, N-shaped, twoPlane where the small core of type is parallel to each other.
Further, it is characterised in that: in the step S1, the transverse direction crab is made of reinforcing bar.
Further, in the step S1, the error of the straightness of the sand core is less than ± 0.5mm.
Further, in the step S2, the size of the clip are as follows: overall length 43 ± 0.5mm, wide 10 ± 0.5mm.
The beneficial effects of the present invention are: twoGround after type runner is extracted from across primary jet road, just without any support
Side, and this section of runner is long, complex-shaped, the ruler because molten steel pouring temperature is different when pouring, between folder gear i.e. two runner
Very little amplitude of variation and the straightness amplitude of variation of runner are larger, and the straightness that conventional method not can guarantee runner reaches +/-
The precision of 0.5mm, the present invention fix two using the stud of clip etc by using special auxiliary materialType runner
Between folder shelves, so that its opening is not become larger because of deformation when pouring, by this technique, the cooling meat of molten iron is not
Loam core folder shelves are served again too big, casting is after a series of old process are cleared up in moulding casting, inspection appearance and ruler after dissection
It is very little to meet the requirements, improve the qualification rate of casting finished products, it is ensured that equipment hydraulic control system has longer service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of inventive die；
Fig. 2 is the structural schematic diagram of clip of the present invention；
Wherein: 1- transverse direction crab, the small core of 2- first longitudinal direction, the small core of 3-n type, 5-The small core of type, the lateral small core of 4-, 6-
Longitudinal small core, 7- clip.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
A kind of manufacturing method of novel directional control valve casting referring to FIG. 1-2, comprising the following steps:
S1: production novel directional control valve casting die, the mold is by upper die and lower die, sand core and pouring and riser systems group
At；The sand core includes lateral crab 1, the small core 2 of first longitudinal direction, 3, two, the small core of N-shapedThe small core 5 of type and the small core of auxiliary, institute
State 3, two, the small core of the small core 2 of lateral crab 1, first longitudinal direction, N-shapedThe small core 5 of type is in the same plane, described laterally main
Arbor 1 is made of reinforcing bar；The small core of auxiliary is made into integration by laterally small core 4 and the small core 6 in three longitudinal directions；The transverse direction main core
Bone 1 is horizontally placed in the lower die, the interposition on the top of the small core 2 of first longitudinal direction and the lateral crab 1
Connection is set, T font is formed, the small core 3 of N-shaped is arranged in the two sides of the small core 2 of the first longitudinal direction and is located at the lateral main core
The top of bone 1 is connected with the lateral crab 1, described twoThe small core 5 of type is symmetricly set on the two of the small core 3 of the N-shaped
Side, and connect with the lateral crab 1；The small core of auxiliary is set to the front of the lateral crab 1, described auxiliary
The small core 6 in three longitudinal directions of small core is helped to be respectively arranged at 2, two, the small core of the first longitudinal directionThe lower section of the small core 5 of type just before
Side, and by link block respectively with 2, two, the small core of the first longitudinal directionThe lower section of the small core 5 of type connects；The small core of auxiliary
Place plane and the lateral crab 1, the small core 2 of first longitudinal direction, 3, two, the small core of N-shapedPlane where the small core 5 of type is mutual
In parallel；The cavity of novel directional control valve body is formed after the upper die and lower die molding with sand core；The straightness of the sand core
Error is less than ± 0.5mm.
S2: installation clip 7, it will be described two by clip 7The upper section of the small core 5 of type is fixed, for keeping in casting
Upper section is parallel to each other indeformable, the size of the clip 7 are as follows: overall length 43 ± 0.5mm, wide 10 ± 0.5mm；
S3: after mold is installed, cope shell, drag sheel are embedded in sandbox, cope shell, drag sheel outer surface and sand
Cavity between on the inside of case is covered with layer of sand, is equipped with the pouring and riser systems being connected to shell mould in layer of sand；
S4: pouring molten iron, pouring temperature are 1380 DEG C -1420 DEG C, duration of pouring 25s-28s, 1520 DEG C of tapping temperature -
1540 DEG C, molding.
The beneficial effects of the present invention are: twoGround after type runner is extracted from across primary jet road, just without any support
Side, and this section of runner is long, complex-shaped, the ruler because molten steel pouring temperature is different when pouring, between folder gear i.e. two runner
Very little amplitude of variation and the straightness amplitude of variation of runner are larger, and the straightness that conventional method not can guarantee runner reaches +/-
The precision of 0.5mm, the present invention fix two using the stud of clip etc by using special auxiliary materialType runner
Between folder shelves, so that its opening is not become larger because of deformation when pouring, by this technique, the cooling meat of molten iron is not
Loam core folder shelves are served again too big, casting is after a series of old process are cleared up in moulding casting, inspection appearance and ruler after dissection
It is very little to meet the requirements, improve the qualification rate of casting finished products, it is ensured that equipment hydraulic control system has longer service life.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of manufacturing method of novel directional control valve casting, it is characterised in that: the following steps are included:
S1: production novel directional control valve casting die, the mold are made of upper die and lower die, sand core and pouring and riser systems；It is described
Sand core includes lateral crab, the small core of first longitudinal direction, the small core of N-shaped, twoThe small core of type and the small core of auxiliary；The small core of the auxiliary by
Laterally small core and three small cores in longitudinal direction are made into integration；The transverse direction crab is horizontally placed in the lower die, the first longitudinal direction
The top of small core is connect with the middle position of the lateral crab, forms T font, and the small core of N-shaped is arranged described
The two sides of the small core of first longitudinal direction and the top for being located at the lateral crab, are connected with the lateral crab, described two
The small core of type is symmetricly set on the two sides of the small core of the N-shaped, and connect with the lateral crab；The small core of auxiliary is set to institute
The front of lateral crab is stated, three small cores in longitudinal direction of the small core of auxiliary are respectively arranged at the small core of the first longitudinal direction, two
It is aThe front of the lower section of the small core of type, and by link block respectively with the small core of the first longitudinal direction, twoUnder the small core of type
Section connection；The cavity of novel directional control valve body is formed after the upper die and lower die molding with sand core；
S2: installation clip, it will be described two by clipThe upper section of the small core of type is fixed, for keeping upper section mutual in casting
It is parallel indeformable；
S3: after mold is installed, cope shell, drag sheel are embedded in sandbox, on the inside of cope shell, drag sheel outer surface and sandbox
Between cavity be covered with layer of sand, the pouring and riser systems being connected to shell mould are equipped in layer of sand；
S4: pouring molten iron, pouring temperature are 1380 DEG C -1420 DEG C, duration of pouring 25s-28s, 1520 DEG C -1540 of tapping temperature
DEG C, molding.
2. a kind of manufacturing method of novel directional control valve casting according to claim 1, it is characterised in that: the step
In S1, the transverse direction crab, the small core of first longitudinal direction, the small core of N-shaped, twoThe small core of type is in the same plane.
3. a kind of manufacturing method of novel directional control valve casting according to claim 2, it is characterised in that: the step
In S1, plane where the small core of auxiliary and the lateral crab, the small core of first longitudinal direction, the small core of N-shaped, twoThe small core institute of type
Plane be parallel to each other.
4. a kind of manufacturing method of novel directional control valve casting described in -3 any one claims according to claim 1,
It is characterized by: the transverse direction crab is made of reinforcing bar in the step S1.
5. a kind of manufacturing method of novel directional control valve casting according to claim 4, it is characterised in that: the step
In S1, the error of the straightness of the sand core is less than ± 0.5mm.
6. a kind of manufacturing method of novel directional control valve casting according to claim 1, it is characterised in that: the step
In S2, the size of the clip are as follows: overall length 43 ± 0.5mm, wide 10 ± 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811066057.6A CN109175258A (en) | 2018-09-13 | 2018-09-13 | A kind of manufacturing method of novel directional control valve casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811066057.6A CN109175258A (en) | 2018-09-13 | 2018-09-13 | A kind of manufacturing method of novel directional control valve casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109175258A true CN109175258A (en) | 2019-01-11 |
Family
ID=64910463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811066057.6A Pending CN109175258A (en) | 2018-09-13 | 2018-09-13 | A kind of manufacturing method of novel directional control valve casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109175258A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US818413A (en) * | 1904-03-03 | 1906-04-24 | Arthur B Underhill | Combined metal core vent and support. |
| CN103357820A (en) * | 2013-05-02 | 2013-10-23 | 江苏泰普电力设备有限公司 | 25T high-pressure multi-path valve body casting core assembling structure |
| CN104999040A (en) * | 2015-06-25 | 2015-10-28 | 南通华东油压科技有限公司 | Manufacturing technology of oil inflow valve casting |
| CN204817934U (en) * | 2015-06-25 | 2015-12-02 | 南通华东油压科技有限公司 | Filling valve foundry goods mould |
| CN204817917U (en) * | 2015-06-25 | 2015-12-02 | 南通华东油压科技有限公司 | Mole valve gap foundry goods special mould |
| CN105772646A (en) * | 2016-04-22 | 2016-07-20 | 南通华东油压科技有限公司 | Large-duty loader hydraulic valve body casting mold and manufacturing method |
| CN106001460A (en) * | 2016-07-22 | 2016-10-12 | 南通华东油压科技有限公司 | High-pressure valve body casting |
| CN205816750U (en) * | 2016-07-22 | 2016-12-21 | 南通华东油压科技有限公司 | A kind of high pressure valve body moulding |
| CN107081408A (en) * | 2017-06-12 | 2017-08-22 | 南通华东油压科技有限公司 | A kind of monoblock type valve body moulding and its technique |
-
2018
- 2018-09-13 CN CN201811066057.6A patent/CN109175258A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US818413A (en) * | 1904-03-03 | 1906-04-24 | Arthur B Underhill | Combined metal core vent and support. |
| CN103357820A (en) * | 2013-05-02 | 2013-10-23 | 江苏泰普电力设备有限公司 | 25T high-pressure multi-path valve body casting core assembling structure |
| CN104999040A (en) * | 2015-06-25 | 2015-10-28 | 南通华东油压科技有限公司 | Manufacturing technology of oil inflow valve casting |
| CN204817934U (en) * | 2015-06-25 | 2015-12-02 | 南通华东油压科技有限公司 | Filling valve foundry goods mould |
| CN204817917U (en) * | 2015-06-25 | 2015-12-02 | 南通华东油压科技有限公司 | Mole valve gap foundry goods special mould |
| CN105772646A (en) * | 2016-04-22 | 2016-07-20 | 南通华东油压科技有限公司 | Large-duty loader hydraulic valve body casting mold and manufacturing method |
| CN106001460A (en) * | 2016-07-22 | 2016-10-12 | 南通华东油压科技有限公司 | High-pressure valve body casting |
| CN205816750U (en) * | 2016-07-22 | 2016-12-21 | 南通华东油压科技有限公司 | A kind of high pressure valve body moulding |
| CN107081408A (en) * | 2017-06-12 | 2017-08-22 | 南通华东油压科技有限公司 | A kind of monoblock type valve body moulding and its technique |
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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 |
Application publication date: 20190111 |
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| RJ01 | Rejection of invention patent application after publication |