CN107061831B - Novel valve body foundry goods is allied oneself with in work - Google Patents
Novel valve body foundry goods is allied oneself with in work Download PDFInfo
- Publication number
- CN107061831B CN107061831B CN201710438627.9A CN201710438627A CN107061831B CN 107061831 B CN107061831 B CN 107061831B CN 201710438627 A CN201710438627 A CN 201710438627A CN 107061831 B CN107061831 B CN 107061831B
- Authority
- CN
- China
- Prior art keywords
- annular oil
- oil groove
- valve body
- flow passage
- runner
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- 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
-
- 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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses a novel working joint valve body casting, which is internally provided with a valve core through hole, an annular oil groove, a straight flow channel, an inclined flow channel and auxiliary flow channels, wherein the surface of the valve body is provided with a flow channel opening, the valve body is internally provided with a valve core through hole, a plurality of auxiliary flow channels are provided with eight annular oil grooves, the auxiliary flow channels are used for connecting the valve core through hole, the annular oil groove, the straight flow channel and the inclined flow channel in the valve body so as to be communicated, and the surface of the valve body is provided with the flow channel opening which corresponds to and is communicated with all flow channels in the valve body. The valve body has the advantages of small volume, reliable action, multiple functions and long service life.
Description
Technical Field
The utility model relates to the field of mechanical engineering, in particular to a hydraulic valve body casting for controlling the direction of fluid.
Background
At present, although the production of engineering machinery is large in China, the industry is large and not strong, the productivity of middle-low grade products is excessive, high-grade hydraulic components almost depend on import, the development of the hydraulic industry is seriously delayed from that of the host industry, and the development of the hydraulic industry becomes a main bottleneck for restricting the development of equipment manufacturing industry. At present, the whole manufacturing technology level of the hydraulic part industry in China still has a larger gap compared with the international advanced country.
The working joint valve body casting is an automatic basic element for controlling the direction of fluid, has the functions of stopping, adjusting, guiding, stabilizing pressure, shunting or overflow pressure relief, and the like, is high in integration level, small in size, multiple in function and long in service life along with the development and progress of equipment, and has the problems of bending a valve core hole, shrinking inside, trace of chill on the surface of the casting and low yield in the casting process of the valve body casting.
In view of the above, the novel working joint valve body casting which is small in size, reliable in action, multiple in function, long in service life, good in quality and high in yield is provided, and the novel working joint valve body casting is a problem to be solved by a person skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a novel working joint valve body casting which is high in integration level, reliable in action, multiple in function and long in service life.
In order to achieve the aim of the utility model, the utility model provides a novel working joint valve body casting, which comprises a valve body (1), wherein the valve body (1) is in a flat square shape, a valve core through hole (2), an annular oil groove, a straight flow channel, an inclined flow channel and an auxiliary flow channel are arranged in the valve body (1), a plurality of flow channel openings are formed in the surface of the valve body (1), eight annular oil grooves are sequentially formed in the valve core through hole (2) from left to right, and the eight annular oil grooves, namely a first annular oil groove, a second annular oil groove, a third annular oil groove, a fourth annular oil groove, a fifth annular oil groove, a sixth annular oil groove, a seventh annular oil groove and an eighth annular oil groove are formed in the valve body (1), and the plurality of auxiliary flow channels are used for connecting the valve core through hole (2), the annular oil groove, the straight flow channel and the inclined flow channel and the plurality of flow channel openings are formed in each surface of the valve body (1) and correspond to and are communicated with the valve core through hole (2), the annular oil groove, the straight flow channel, the inclined flow channel and the auxiliary flow channel are communicated with the auxiliary flow channel.
Further, a third flow passage opening (3) and a fourth flow passage opening (4) are respectively formed in the upper ends of the second annular oil groove and the seventh annular oil groove on the valve core through hole (2), the second annular oil groove and the third flow passage opening (3) of the valve core through hole (2) are communicated through a first inclined flow passage (5), and the seventh annular oil groove and the fourth flow passage opening (4) of the valve core through hole (2) are communicated through a second inclined flow passage (6).
Further, a fifth runner port (7) communicated with the first inclined runner (5) is formed in the left side face of the valve body (1), the first inclined runner (5) and the fifth runner port (7) are communicated through a third straight runner (8), a sixth runner port (9) communicated with the second inclined runner (6) is formed in the right side face of the valve body (1), the second inclined runner (6) and the sixth runner port (9) are communicated through a fourth straight runner (10), and the third straight runner (8) and the fourth straight runner (10) are parallel to the valve core through hole (2) and are in the same plane.
Further, an annular oil groove I (11) is arranged on the third straight flow channel (8), an annular oil groove II (12) is arranged on the fourth straight flow channel (10), the annular oil groove I (11) is communicated with a first annular oil groove on the valve core through hole (2) through a first auxiliary flow channel (13), an eighth annular oil groove on the annular oil groove (12) and the valve core through hole (2) is communicated with a second auxiliary flow channel (14), and the first auxiliary flow channel (13) and the second auxiliary flow channel (14) are linear flow channels.
Further, the valve core through hole (2) is communicated with the sixth annular oil groove through a first C-shaped auxiliary flow passage (15), a first flow passage opening (16) is formed in the upper portion of the middle of the first C-shaped auxiliary flow passage (15), the first flow passage opening (16) is formed in the upper surface of the valve body (1), and the first flow passage opening (16) is communicated with the first C-shaped auxiliary flow passage (15) through a first straight flow passage.
Further, a second runner port (17) is formed in the lower end of the fourth annular oil groove on the valve core through hole (2), the second runner port (17) is formed in the lower surface of the valve body (1), and the fourth annular oil groove is communicated with the second runner port (17) through a second straight runner (18).
Further, the second straight flow channel (18) is provided with two annular oil grooves from top to bottom, the first annular oil groove and the second annular oil groove of the second straight flow channel (18) are arranged in sequence, and the second annular oil groove on the second straight flow channel (18) and the sixth annular oil groove on the valve core through hole (2) are communicated through a second C-shaped auxiliary flow channel (19).
Specifically, the valve body is cast and integrally formed.
The novel working joint valve body casting has the advantages of small volume, reliable action, multiple functions and long service life.
The utility model is realized by the following technical scheme: the novel casting process for the valve body casting of the working coupler comprises core making, shell making, modeling and pouring, and is characterized in that:
1) When the core is manufactured, the artificial sand is adopted, the phi 3mm cold-drawn polished round is added to serve as a core bar, the artificial sand is high in strength, the strength of the easily-deformed runner sand core is guaranteed, the strength of a main hole of the sand core is guaranteed by adding the polished round to serve as the core bar, the sand core cannot deform after molten iron enters a cavity, and the straightness of the runner and the internal dimensional accuracy of a casting are effectively guaranteed.
2) The side chill is removed during casting, and the casting process is changed into a side gate top dead head casting process, and the dead head adopts a dead head with phi 90mm heating and heat insulating dead head, so that the feeding effect can be well achieved, and the problem of chill marks on the surface of a casting is solved, so that the yield of the casting reaches more than 93%.
3) The core making process parameters are as follows: the sand shell adopts common precoated sand, and the heating temperature is 280-310 ℃; the sand shooting pressure is more than or equal to 0.5MPa, and the sand shooting time is 3-6 seconds; curing time is 40-60 seconds; the sand core adopts HACER80, and the heating temperature is 250-280 ℃; sand shooting pressure is more than or equal to 0.5MPa; sand shooting time is 2-5 seconds; curing time is 30-50 seconds; the paint on the sand core adopts graphite powder paint, adopts a dipping mode, the paint concentration is Baume 9-11, the paint drying temperature is 180-220 ℃, and the heat preservation time is 30-50min;
drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of a working manifold valve body casting provided by the utility model.
Fig. 2 is a left side view of the working manifold valve body casting provided by the utility model.
Fig. 3 is a top view of the working manifold valve body casting provided by the utility model.
FIG. 4 is a cross-sectional view in the A-A direction of the working manifold valve body casting provided by the utility model.
FIG. 5 is a B-B cross-sectional view of the working manifold valve body casting provided by the utility model.
FIG. 6 is a C-C cross-sectional view of the working manifold valve body casting provided by the utility model.
FIG. 7 is a D-D sectional view of the working manifold valve body casting provided by the utility model.
FIG. 8 is an E-E directional cross-sectional view of a working manifold valve body casting provided by the utility model.
Wherein, the reference numerals in the figures correspond to: the valve comprises a valve body, a 2-valve core through hole, a 3-third runner port, a 4-fourth runner port, a 5-first inclined runner, a 6-second inclined runner, a 7-fifth runner port, an 8-third straight runner, a 9-sixth runner port, a 10-fourth straight runner, a 11-annular oil groove I, a 12-annular oil groove II, a 13-first auxiliary runner, a 14-second auxiliary runner, a 15-first C-shaped auxiliary runner, a 16-first runner port, a 17-second runner port, a 18-second straight runner and a 19-second C-shaped auxiliary runner.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the embodiments of the present utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of embodiments of the utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise, and furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
Examples:
referring to the drawings, in the description of the specific embodiment of the utility model, as shown in fig. 1, the working joint valve body casting comprises a valve body 1, wherein the valve body 1 is in a flat tetragonal shape, a valve core through hole 2, an annular oil groove, a straight flow channel, an inclined flow channel, a flow channel opening and an auxiliary flow channel are arranged in the valve body 1, the valve core through hole 2 is a main flow channel of the valve body 1, the straight flow channel and the inclined flow channel are flow channels of which the interior is communicated with the valve body surface flow channel opening, a plurality of auxiliary flow channels are used for connecting the valve core through hole 2, the annular oil groove, the straight flow channel and the inclined flow channel in the valve body 1 so as to be communicated, and a plurality of flow channel openings are positioned on each surface of the valve body 1 and correspond to and are communicated with the valve core through hole 2, the annular oil groove, the straight flow channel, the inclined flow channel and the auxiliary flow channel in the valve body 1.
Specifically, eight annular oil grooves are formed in the valve core through hole 2 from left to right, and are a first annular oil groove, a second annular oil groove, a third annular oil groove, a fourth annular oil groove, a fifth annular oil groove, a sixth annular oil groove, a seventh annular oil groove and an eighth annular oil groove of the valve core through hole 2 respectively, and each annular oil groove is communicated with the valve core through hole 2.
Further, a first flow passage opening (3) and a second flow passage opening (4) are formed in the upper ends of the second annular oil groove and the seventh annular oil groove on the valve core through hole (2), the second annular oil groove and the first flow passage opening (3) of the valve core through hole (2) are communicated through a first inclined flow passage (5), and the seventh annular oil groove and the fourth flow passage opening (4) of the valve core through hole (2) are communicated through a second inclined flow passage (6).
Further, a fifth runner port (7) communicated with the first inclined runner (5) is formed in the left side face of the valve body (1), the first inclined runner (5) and the fifth runner port (7) are communicated through a third straight runner (8), a sixth runner port (9) communicated with the second inclined runner (6) is formed in the right side face of the valve body (1), the second inclined runner (6) and the sixth runner port (9) are communicated through a fourth straight runner (10), and the third straight runner (8) and the fourth straight runner (10) are parallel to the valve core through hole (2) and are in the same plane.
Further, an annular oil groove I (11) is arranged on the third straight flow channel (8), an annular oil groove II (12) is arranged on the straight flow channel (10), the annular oil groove I (11) is communicated with a first annular oil groove on the valve core through hole (2) through a first auxiliary flow channel (13), an eighth annular oil groove on the annular oil groove II (12) and the valve core through hole (2) is communicated with a second auxiliary flow channel (14), and the first auxiliary flow channel (13) and the second auxiliary flow channel (14) are linear flow channels.
Further, the valve core through hole (2) is communicated with the sixth annular oil groove through a first C-shaped auxiliary flow passage (15), a first flow passage opening (16) is formed in the upper portion of the middle of the first C-shaped auxiliary flow passage (15), the first flow passage opening (16) is formed in the upper surface of the valve body (1), and the first flow passage opening (16) is communicated with the first C-shaped auxiliary flow passage (15) through a first straight flow passage.
Further, a second runner port (17) is formed in the lower end of the fourth annular oil groove on the valve core through hole (2), the second runner port (17) is formed in the lower surface of the valve body (1), and the fourth annular oil groove is communicated with the second runner port (17) through a second straight runner (18).
Further, the second straight flow channel (18) is provided with two annular oil grooves from top to bottom, the first annular oil groove and the second annular oil groove of the second straight flow channel (18) are arranged in sequence, and the second annular oil groove on the second straight flow channel (18) and the sixth annular oil groove on the valve core through hole (2) are communicated through a second C-shaped auxiliary flow channel (19).
Specifically, the valve body is cast and integrally formed.
The novel working joint valve body casting has the advantages of small volume, reliable action, multiple functions and long service life.
The key technology of the novel working joint valve body casting is as follows: including core making, shell making, molding, pouring, its characterized in that:
1) The shell adopts a precoated sand shell type process, the main sand core adopts Jin Ying B590US artificial sand to prepare the core, a phi 3mm cold-drawn polished round is added to serve as a core bar, the artificial sand is high in strength, the strength of the easily-deformed runner sand core is ensured, the strength of a main hole of the sand core is ensured by adding the polished round to serve as the core bar, the sand core cannot deform after molten iron enters a cavity, and the straightness of the runner and the dimensional accuracy of the inside of a casting are effectively ensured.
2) The side chill is removed during casting, and the casting process is changed into a side gate top dead head casting process, and the dead head adopts a dead head with phi 90mm heating and heat insulating dead head, so that the feeding effect can be well achieved, and the problem of chill marks on the surface of a casting is solved, so that the yield of the casting reaches more than 93%.
3) The core making process parameters are as follows: the sand shell adopts common precoated sand, and the heating temperature is 280-310 ℃; the sand shooting pressure is more than or equal to 0.5MPa, and the sand shooting time is 3-6 seconds; curing time is 40-60 seconds; the sand core adopts HACER80, and the heating temperature is 250-280 ℃; sand shooting pressure is more than or equal to 0.5MPa; sand shooting time is 2-5 seconds; curing time is 30-50 seconds; the paint on the sand core adopts graphite powder paint, adopts a dipping mode, the paint concentration is Baume 9-11, the paint drying temperature is 180-220 ℃, and the heat preservation time is 30-50min;
main technical parameters of the novel working combined valve casting valve body are as follows:
1) Material quality: QT450-10
2) Tensile strength: not less than 450Mpa
3) Hardness: HBW160-210
4) Meets the design and size requirements
5) No casting defects such as sand inclusion, air holes, shrinkage cavities, shrinkage porosity and the like, and no defects such as sand sticking, cloak and the like in the inner cavity
6) Casting single-weight: 10.2kg
The novel working joint valve body casting has the following beneficial effects: reasonable structure, small volume, reliable action and multiple functions, and greatly improves the casting qualification rate.
The foregoing disclosure is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the claims herein, as equivalent changes to the claims herein will fall within the scope of the utility model.
Claims (5)
1. The novel working joint valve body casting comprises a valve body (1), and is characterized in that a valve core through hole (2), an annular oil groove, a straight flow channel, an inclined flow channel and an auxiliary flow channel are arranged in the valve body (1), a plurality of flow channel openings are formed in the surface of the valve body (1), the valve core through hole (2) is a main flow channel of the valve body (1), a first annular oil groove, a second annular oil groove, a third annular oil groove, a fourth annular oil groove, a fifth annular oil groove, a sixth annular oil groove, a seventh annular oil groove and an eighth annular oil groove are sequentially formed in the valve core through hole (2) from left to right, the auxiliary flow channel is a plurality of auxiliary flow channels and used for connecting the valve core through hole (2), the annular oil groove, the straight flow channel and the inclined flow channel in the valve body (1), and the plurality of flow channel openings are located on the surfaces of the valve body (1) and correspond to and are communicated with the valve core through hole (2), the annular oil groove, the straight flow channel and the auxiliary flow channel;
the valve core through hole (2) is communicated with the third annular oil groove and the sixth annular oil groove through a first C-shaped auxiliary flow passage (15), a first flow passage opening (16) is formed in the upper part of the middle of the first C-shaped auxiliary flow passage (15), the first flow passage opening (16) is formed in the upper surface of the valve body (1), and the first flow passage opening (16) is communicated with the first C-shaped auxiliary flow passage (15) through a first straight flow passage;
the lower end of a fourth annular oil groove on the valve core through hole (2) is provided with a second flow passage opening (17), the second flow passage opening (17) is arranged on the lower surface of the valve body (1), and the fourth annular oil groove is communicated with the second flow passage opening (17) through a second straight flow passage (18);
the second straight flow passage (18) is provided with two annular oil grooves from top to bottom, namely a first annular oil groove and a second annular oil groove of the second straight flow passage (18) in sequence, and the second annular oil groove on the second straight flow passage (18) is communicated with a sixth annular oil groove on the valve core through hole (2) through a second C-shaped auxiliary flow passage (19);
the novel processing technology of the working valve body casting comprises core making, modeling, pouring and cleaning, wherein:
1) During core making, artificial sand is adopted to make a core, and a phi 3mm cold-drawn polished round is placed in the core to serve as a core bar for ensuring the straightness of a flow passage in the valve body;
2) During casting, a side gate top riser casting process is adopted, and a phi 90mm heating and heat-preserving riser is adopted as the riser to solve the internal shrinkage problem of the casting and the chill mark problem on the surface of the casting.
2. The novel working coupling valve body casting according to claim 1, wherein a third flow passage opening (3) and a fourth flow passage opening (4) are respectively formed in the upper ends of the second annular oil groove and the seventh annular oil groove on the valve core through hole (2), the second annular oil groove and the third flow passage opening (3) of the valve core through hole (2) are communicated through a first oblique flow passage (5), and the seventh annular oil groove and the fourth flow passage opening (4) of the valve core through hole (2) are communicated through a second oblique flow passage (6).
3. The novel working valve body casting according to claim 2, wherein a fifth runner port (7) communicated with the first inclined runner (5) is formed in the left side surface of the valve body (1), the first inclined runner (5) and the fifth runner port (7) are communicated through a third straight runner (8), a sixth runner port (9) communicated with the second inclined runner (6) is formed in the right side surface of the valve body (1), the second inclined runner (6) and the sixth runner port (9) are communicated through a fourth straight runner (10), and the third straight runner (8) and the fourth straight runner (10) are parallel to the valve core through hole (2) and are in the same plane.
4. The novel working valve body casting according to claim 3, wherein the third straight runner (8) is provided with an annular oil groove I (11), the fourth straight runner (10) is provided with an annular oil groove II (12), the annular oil groove I (11) is communicated with a first annular oil groove on the valve core through hole (2) through a first auxiliary runner (13), the annular oil groove II (12) is communicated with an eighth annular oil groove on the valve core through hole (2) through a second auxiliary runner (14), and the first auxiliary runner (13) and the second auxiliary runner (14) are linear runners.
5. A new working manifold valve body casting according to any of claims 1-4, characterized in that the valve body (1) is cast and integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438627.9A CN107061831B (en) | 2017-06-12 | 2017-06-12 | Novel valve body foundry goods is allied oneself with in work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438627.9A CN107061831B (en) | 2017-06-12 | 2017-06-12 | Novel valve body foundry goods is allied oneself with in work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061831A CN107061831A (en) | 2017-08-18 |
| CN107061831B true CN107061831B (en) | 2023-05-02 |
Family
ID=59594875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710438627.9A Active CN107061831B (en) | 2017-06-12 | 2017-06-12 | Novel valve body foundry goods is allied oneself with in work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107061831B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261905A (en) * | 2018-09-13 | 2019-01-25 | 南通华东油压科技有限公司 | A kind of type core manufacturing valve body |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10184968A (en) * | 1996-12-26 | 1998-07-14 | Hitachi Constr Mach Co Ltd | Valve housing structure and its manufacture |
| CN101373027B (en) * | 2008-08-08 | 2010-08-25 | 锦州市力特缸泵阀液压制造有限公司 | Multi-way change valve |
| CN105772643A (en) * | 2016-05-12 | 2016-07-20 | 南通华东油压科技有限公司 | Casting technology of directional control valve |
| CN106001460B (en) * | 2016-07-22 | 2018-07-13 | 南通华东油压科技有限公司 | A kind of high pressure valve body moulding |
| CN206000797U (en) * | 2016-08-31 | 2017-03-08 | 山东泰丰液压股份有限公司 | Total power self-adaptation type load-sensitive multiple directional control valve |
| CN207213275U (en) * | 2017-06-12 | 2018-04-10 | 南通华东油压科技有限公司 | A kind of Novel work joins valve body moulding |
-
2017
- 2017-06-12 CN CN201710438627.9A patent/CN107061831B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107061831A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105772632A (en) | Quadruple valve body casting and mold thereof | |
| CN105757308A (en) | Hydraulic pilot valve body casting and die thereof | |
| CN104776258A (en) | Multi-passage valve body casting | |
| CN107061831B (en) | Novel valve body foundry goods is allied oneself with in work | |
| CN108405803B (en) | Valve body and processing technology thereof | |
| CN103240390A (en) | Iron-typed cast ball die | |
| CN100500330C (en) | Method for casting piston | |
| CN203316675U (en) | Iron casting ball template | |
| CN204220934U (en) | A kind of many valve gated molds | |
| CN206519535U (en) | It is a kind of to save the container angle casting shell rising head setting structure of chill | |
| CN203448615U (en) | Iron cast ball mould | |
| CN205715888U (en) | A kind of hydraulic pilot valve body foundry goods | |
| CN212760987U (en) | Investment casting structure for ice squeezer casting | |
| CN204784922U (en) | Multiple unit valve valve body foundry goods | |
| CN107013723B (en) | Hydraulic valve body casting of excavator | |
| CN208232018U (en) | A kind of abrasive material molding die with rapid cooling function | |
| CN204724828U (en) | A kind of water-cooled core-pulling slide block being applied to die casting | |
| CN202894273U (en) | Novel air cylinder die-casting die | |
| CN220049945U (en) | Wear-resisting ball casting mould | |
| CN202291279U (en) | Horizontal parting type mould for casting ball and casting section | |
| CN206229983U (en) | A kind of water-jacket typ exhaust manifold casting sand mold | |
| CN209792544U (en) | Sand casting mold core with cooling function | |
| CN211564412U (en) | Mold for preparing ductile iron crankshaft double-sided shell mold of refrigerator compressor | |
| CN220901827U (en) | Pulp pump body casting pouring system | |
| CN218775610U (en) | Cold box core shooting mould |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |