CN113864505B - Lower shell of electric valve, mold and production process thereof - Google Patents
Lower shell of electric valve, mold and production process thereof Download PDFInfo
- Publication number
- CN113864505B CN113864505B CN202111148611.7A CN202111148611A CN113864505B CN 113864505 B CN113864505 B CN 113864505B CN 202111148611 A CN202111148611 A CN 202111148611A CN 113864505 B CN113864505 B CN 113864505B
- Authority
- CN
- China
- Prior art keywords
- electric valve
- core
- lower shell
- sand core
- die base
- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to a lower shell of an electric valve, a die and a production process thereof, which comprise a body and a copper sleeve, wherein the copper sleeve is embedded on the body and is integrated with the body, continuous and discontinuous bulges are circumferentially arranged on the outer side of the copper sleeve, a connecting part is arranged at the connecting part of the body and the copper sleeve, the connecting part is annular, trapezoidal grooves are uniformly arranged on the connecting part along the circumferential direction, and an air outlet is arranged between two adjacent trapezoidal grooves. The lower shell of the electric valve for the high-end field is manufactured by adopting an aluminum-clad copper process, the aluminum-clad copper has stronger conductivity, is beneficial to electric transmission, has better conductive property, effectively reduces environmental pollution and energy consumption, has a more stable and reliable integral casting structure, adopts a low-pressure process during casting, and can produce the lower shell with good internal compactness and better mechanical performance due to certain heat treatment.
Description
Technical Field
The invention relates to the technical field of valve casting, in particular to a lower shell of an electric valve, a die and a production process thereof.
Background
Traditional electric valve shell generally adopts independent material and through high-pressure casting, especially the electric valve in nuclear power field requires highly, need integral type structure, electric valve shell among the prior art adopts the ferrous metal casting mostly, the environmental pollution big energy consumption is high, and it is great to go up the weight of iron from the performance of product, be corroded easily, electric conductive property is poor, traditional aluminium system casing generally adopts high-pressure casting, the inside compactness of the product of producing is poor, also can't carry out heat treatment, this mechanical properties that just leads to the product is very poor, can't reach the operation requirement of nuclear power product, and short service life, single aluminium system product also can't reach corresponding electric conductive requirement simultaneously.
Disclosure of Invention
In view of the above problems, the present invention provides a lower shell of an electric valve, a mold and a production process thereof.
In order to solve the above technical problems, a first technical solution adopted by the present invention is as follows: the utility model provides a casing under motorised valve, includes body and copper sheathing, the copper sheathing inlays the dress on the body, and as an organic whole each other with the body, the outside circumference of copper sheathing is equipped with continuous arch of being interrupted, the body with the junction of copper sheathing is equipped with connecting portion, connecting portion are the annular, connecting portion evenly are provided with the dovetail groove along circumference, and are equipped with the venthole between two adjacent dovetail grooves.
The invention has the second technical scheme that the die of the lower shell of the electric valve comprises an upper die base, a lower die base and a sand core, wherein a gland is arranged on the upper die, a boss corresponding to the trapezoidal groove and the air outlet hole is arranged on the gland, and a limiting step corresponding to the copper sleeve is arranged on the sand core.
In the technical scheme, two cavities are arranged between the upper die base and the lower die base, the upper die base is provided with a casting hole, and the casting hole is respectively communicated with the two cavities through a flow passage.
In the above technical scheme, be equipped with the slider of loosing core on the upper die base, the slider of loosing core inlays to be installed in the spout of upper die base, is equipped with two sliders of loosing core on every die cavity, and the slider mutually perpendicular setting of loosing core.
In the technical scheme, the sand core is provided with an exhaust groove.
The third technical scheme of the invention provides a manufacturing process of a lower shell of an electric valve, which comprises the following steps:
s1, manufacturing a sand core in the lower shell, spraying a black metal type HP coating on the surface of the sand core, and baking;
s2, smelting the aluminum ingot to obtain an aluminum liquid at 650-780 ℃;
s3, installing a die on a die casting machine, sleeving a copper core on a sand core and placing the sand core in a position corresponding to the die, and heating the die to 330-400 ℃ after die assembly;
s4, injecting aluminum liquid into a cavity formed by combining the upper die base and the lower die base, starting to pressurize the aluminum liquid in a three-stage manner,
the first-stage pressure is 300mbar, the pressure is increased for 30-40 s,
the pressure of the second section is 400mbar, the pressure is increased by 10s,
the three-stage pressure is 500mbar, the pressure is increased for 10 to 15s,
after pressurization, the mold is left for 100-150 s;
s5, starting the machine after casting is finished and taking out the product;
s6, removing the sand core;
s7, heat treatment.
In the technical scheme, the heat treatment is to place the product in a solid melting furnace, and keep the temperature for 4-7 hours in an environment with a fixed temperature of 520-530 ℃; putting the product into a water tank for cooling, and fishing out after complete cooling; putting the product into an aging furnace, and preserving heat for 7-10 hours at 170-180 ℃; and taking out the product to carry out cloth type hardness test.
In summary, compared with the conventional technical means, the technical scheme of the invention has the following beneficial effects:
1. the lower shell of the electric valve is integrally cast and formed by adopting an aluminum-clad copper process, has better mechanical performance than welding, has irregular effect in the middle by using the sand core, is beneficial to the installation of a subsequent motor, and can reduce the machining cost;
2. the iron material that replaces with the aluminium material has reduced the weight of whole product, and the outward appearance is novel bright more than traditional iron, and is more pleasing to the eye, and the casing is difficult to be corroded, has better life cycle, adds effectual reduction environmental pollution and reduces the energy consumption man-hour.
3. The structure of wrapping copper in aluminum is adopted, and the middle copper sleeve ensures that the copper sleeve has better conductivity and is beneficial to electric transmission;
4. the lower shell cast by low pressure has good internal compactness and can be subjected to heat treatment, so that the mechanical property of the lower shell is better, the service life is longer, and the temperature and the time are specially controlled during the heat treatment because the melting points of copper and aluminum are different, thereby preventing the generation of necking defects and connection problems.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic perspective view of a lower housing of an electrically operated valve according to the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic perspective view of a mold for a lower housing of an electrically operated valve according to the present invention;
FIG. 4 is a schematic cross-sectional view of a mold for a lower housing of an electrically operated valve in accordance with the present invention;
FIG. 5 is a schematic perspective view of a mold of a lower housing of an electrically operated valve with an upper mold base removed in accordance with the present invention;
FIG. 6 is a top view of FIG. 4;
FIG. 7 is a schematic perspective view of an upper mold base according to the present invention;
FIG. 8 is a schematic bottom view of the upper die base of the present invention;
FIG. 9 is a schematic perspective view of the gland of the present invention;
FIG. 10 is a schematic perspective view of a copper sleeve according to the present invention;
the reference numbers are as follows: a body 100; a connecting portion 110; a trapezoidal groove 111; an air outlet 112; a copper bush 200; a protrusion 210; an upper die holder 300; a gland 310; a boss 311; a casting hole 320; a flow passage 330; a lower die holder 400; a sand core 500; a limiting step 510; a core pulling slider 600.
Detailed Description
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made herein without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
The invention is further illustrated with reference to the following figures:
as shown in fig. 1, 2 and 10, a lower shell of an electric valve comprises a body 100 and a copper sleeve 200, wherein the copper sleeve 200 is embedded on the body 100 and integrated with the body 100, a continuous and discontinuous bulge 210 is arranged on the outer circumference of the copper sleeve 200, a connecting part 110 is arranged at the joint of the body 100 and the copper sleeve 200, the connecting part 110 is annular, trapezoidal grooves 111 are uniformly arranged on the connecting part 110 along the circumference, an air outlet 112 is arranged between two adjacent trapezoidal grooves 111, the bulge 210 on the outer side can increase friction force, so that the copper sleeve 200 and the body 100 are combined more tightly and can also conveniently exhaust, the trapezoidal grooves 111 reduce the local thickness, ensure smooth circulation of aluminum liquid, and reduce shrinkage during molding, thereby being beneficial to exhaust.
As shown in fig. 3 to 9, the mold for the lower shell of the electric valve comprises an upper mold base 300, a lower mold base 400 and a sand core 500, wherein the upper mold base 300 is provided with a pressing cover 310, the pressing cover 310 is provided with a boss 311 corresponding to the trapezoidal groove 111 and the air outlet 112, and the sand core 500 is provided with a limiting step 510 corresponding to the copper sleeve 200.
As shown in fig. 7 and 8, two cavities are disposed between the upper die holder 300 and the lower die holder 400, a casting hole 320 is disposed on the upper die holder 300, and the casting hole 320 is respectively communicated with the two cavities through a flow channel 330.
As shown in fig. 4, 5, and 6, the upper die holder 300 is provided with the core-pulling slider 600, the core-pulling slider 600 is embedded in the sliding groove of the upper die holder 300, two core-pulling sliders 600 are provided in each cavity, and the core-pulling sliders 600 are perpendicular to each other, so that material taking can be performed after casting is completed.
The sand core 500 is provided with an exhaust slot, so that air is conveniently exhausted.
A manufacturing process of a lower shell of an electric valve comprises the following steps:
s1, manufacturing a sand core 500 in the lower shell, spraying a black metal type HP coating on the surface of the sand core, and baking;
s2, smelting the aluminum ingot to obtain an aluminum liquid at 650-780 ℃;
s3, installing a die on a die casting machine, sleeving a copper core on a sand core and placing the sand core in a position corresponding to the die, and heating the die to 330-400 ℃ after die assembly;
s4, injecting aluminum liquid into a cavity formed by combining the upper die base and the lower die base, starting to pressurize the aluminum liquid in a three-stage manner,
the first-stage pressure is 300mbar, the pressure is increased for 30-40 s,
the pressure of the second section is 400mbar, the pressure is increased by 10s,
the three-stage pressure is 500mbar, the pressure is increased for 10 to 15s,
after pressurization, the mold is left for 100-150 s;
s5, starting the machine after casting is finished and taking out the product;
s6, removing the sand core;
s7, heat treatment;
the heat treatment comprises the following steps:
placing the product into a solid melting furnace, and keeping the temperature for 4-7 hours, preferably 5 hours, in an environment with a fixed temperature of 520-530 ℃;
putting the product into a water tank for cooling, and completely cooling, namely fishing out the product after no bubbles are generated in the water;
putting the product into an aging furnace, and preserving heat for 7-10 hours, preferably 8 hours, at 170-180 ℃;
and taking out the product to carry out cloth type hardness test.
The lower shell, the copper sleeve 200 and the aluminum body 100 which are cast through the process are integrally formed, so that the lower shell has low current passing loss, namely good conductive performance, and meanwhile, the power transmission efficiency can be effectively improved, and the power transmission and transformation loss is reduced. The aluminum material replaces the iron material, thereby effectively reducing the environmental pollution and the energy consumption, and simultaneously meeting the relevant national standard. Compared with the conventional all-aluminum housing, the copper sleeve 200 made of copper has higher strength and wear resistance than the aluminum body 100, thereby having longer electric life and service life.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A lower shell of an electric valve is characterized in that: draw together body and copper sheathing, the copper sheathing inlays the dress on the body, and mutually as an organic whole with the body, the outside circumference of copper sheathing is equipped with the arch of continuous discontinuity, the body with the junction of copper sheathing is equipped with connecting portion, connecting portion are the annular, connecting portion evenly are provided with the dovetail groove along circumference, and are equipped with the venthole between two adjacent dovetail grooves.
2. The utility model provides a mould of casing under motorised valve which characterized in that: the lower shell of the electric valve used for producing the electric valve as claimed in claim 1 comprises an upper die base, a lower die base and a sand core, wherein a gland is arranged on the upper die, a boss corresponding to the trapezoidal groove and the air outlet hole is arranged on the gland, and a limiting step corresponding to the copper sleeve is arranged on the sand core.
3. The mold for electric valve lower case according to claim 2, wherein:
two cavities are arranged between the upper die base and the lower die base, a casting hole is arranged on the upper die base, and the casting hole is respectively communicated with the two cavities through a flow passage.
4. The mold for electric valve lower case according to claim 3, wherein: the core-pulling mechanism is characterized in that a core-pulling sliding block is arranged on the upper die base, the core-pulling sliding block is embedded in a sliding groove of the upper die base, two core-pulling sliding blocks are arranged on each cavity, and the core-pulling sliding blocks are perpendicular to each other.
5. The mold for lower case of electric valve according to claim 2, wherein: and an exhaust duct is arranged on the sand core.
6. The manufacturing process of the lower shell of the electric valve is characterized in that: for producing the lower housing of an electric valve according to claim 1, the steps are as follows:
s1, manufacturing a sand core in the lower shell, spraying a black metal type HP coating on the surface of the sand core, and baking;
s2, smelting the aluminum ingot to obtain an aluminum liquid at 650-780 ℃;
s3, installing a die on a die casting machine, sleeving a copper core on the sand core, placing the sand core at a position corresponding to the die, and heating the die to 330-400 ℃ after die assembly;
s4, injecting aluminum liquid into a cavity formed by combining an upper die base and a lower die base, starting to pressurize the aluminum liquid in a three-stage manner, wherein the pressure at one stage is 300mbar and is 30-40 s,
the pressure of the second stage is 400mbar, the pressure is 10s,
the three-stage pressure is 500mbar, the pressure is increased for 10 to 15s,
after pressurization, the mold is left for 100-150 s;
s5, starting the machine after casting is finished and taking out the product;
s6, removing the sand core;
and S7, heat treatment.
7. The manufacturing process of the lower case of the electric valve according to claim 6, wherein: the heat treatment comprises the following steps:
placing the product into a solid melting furnace, and preserving heat for 4-7 hours at a fixed temperature of 520-530 ℃;
putting the product into a water tank for cooling, and fishing out after complete cooling;
putting the product into an aging furnace, and preserving heat for 7-10 hours at 170-180 ℃;
and taking out the product to carry out cloth type hardness test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111148611.7A CN113864505B (en) | 2021-09-28 | 2021-09-28 | Lower shell of electric valve, mold and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111148611.7A CN113864505B (en) | 2021-09-28 | 2021-09-28 | Lower shell of electric valve, mold and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113864505A CN113864505A (en) | 2021-12-31 |
| CN113864505B true CN113864505B (en) | 2022-07-12 |
Family
ID=78992325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111148611.7A Active CN113864505B (en) | 2021-09-28 | 2021-09-28 | Lower shell of electric valve, mold and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113864505B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50204493D1 (en) * | 2001-11-28 | 2006-02-16 | Buehler Druckguss Ag Uzwil | METHOD FOR PRODUCING PRESSURE GUN PARTS AND CASTING DEVICE |
| JP4626419B2 (en) * | 2005-06-27 | 2011-02-09 | トヨタ自動車株式会社 | Cylinder block casting method and cylinder block |
| CN103722154B (en) * | 2014-01-20 | 2016-03-30 | 滨州东海龙活塞有限公司 | By the method that copper sheathing becomes to be integrated with casting for piston |
| CN103878347B (en) * | 2014-04-14 | 2016-02-10 | 凤城市朋泰高压电器配套有限公司 | Aluminium copper-clad casting electric machine casing production technology |
| CN205841915U (en) * | 2016-07-04 | 2016-12-28 | 大唐七台河发电有限责任公司 | A kind of electric valve actuating mechanism integral type copper sheathing |
| WO2018039853A1 (en) * | 2016-08-29 | 2018-03-08 | 丁先华 | Hydraulic pilot valve body casting and mould therefor |
| CN106077507B (en) * | 2016-08-31 | 2018-12-25 | 山东泰开精密铸造有限公司 | A kind of casting die and casting technique of automobile water-cooling motor casing casting |
| CN209986248U (en) * | 2019-04-30 | 2020-01-24 | 孟庆欣 | Full steel body self-centering electric chuck shell |
| CN210754990U (en) * | 2019-06-20 | 2020-06-16 | 广东肇庆动力金属股份有限公司 | Casting mold for motor casing |
| CN110829657A (en) * | 2019-10-23 | 2020-02-21 | 江苏航远新材料科技有限公司 | Electromagnetic drive carbon fiber rotor |
-
2021
- 2021-09-28 CN CN202111148611.7A patent/CN113864505B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113864505A (en) | 2021-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8371828B2 (en) | Air compressor having a cast aluminum crankcase | |
| CN110385404B (en) | Casting process design method for preparing complex oil line pipe casting by 3D printing sand mold | |
| CN113441681B (en) | Sand-coated sand casting die for multi-way valve sand mold | |
| CN113864505B (en) | Lower shell of electric valve, mold and production process thereof | |
| CN103817288A (en) | Water-jacket type exhaust manifold casting sand mold and manufacturing method | |
| CN109047708A (en) | The casting technique of electric machine casing | |
| CN114799121B (en) | Fully-sealed vacuumizing mold | |
| CN206662239U (en) | Car engine cooling system thermosistor main body bank part die-casting forming die | |
| CN113560500A (en) | Diesel engine cylinder cover casting air inlet duct integral core and manufacturing process thereof | |
| CN115037088A (en) | Motor base structure and manufacturing method thereof | |
| CN202375873U (en) | Aluminum pot with composite bottom | |
| CN206869074U (en) | A kind of head being used in die casting | |
| CN104948332A (en) | Cylinder barrel of total-aluminum engine cylinder body and preparation method for ceramic protective layer | |
| CN211990871U (en) | Die mould lower die structure with drainage structures | |
| CN110252994A (en) | A kind of mold casting aluminium copper-clad contact and the technique with mold production contact | |
| CN201943795U (en) | Cooling water pump of automobile engine | |
| CN211239549U (en) | New energy automobile motor cooling waterway structure | |
| CN210548678U (en) | Copper pole butt fusion device | |
| CN210359200U (en) | Mould for casting aluminum-clad copper contact | |
| CN209969517U (en) | Die casting die water hole repairing structure that leaks | |
| CN206703429U (en) | A kind of waterproof Kato injection mold | |
| CN207592733U (en) | A kind of casting cylinder cap mold | |
| CN213860548U (en) | Mould for producing multi-specification stress cones | |
| CN215998657U (en) | Low-pressure casting die for motor end cover of new energy automobile | |
| CN105485373A (en) | Faucet |
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 |