CN114082899A - Casting process of sheet type multi-way valve - Google Patents
Casting process of sheet type multi-way valve Download PDFInfo
- Publication number
- CN114082899A CN114082899A CN202111333798.8A CN202111333798A CN114082899A CN 114082899 A CN114082899 A CN 114082899A CN 202111333798 A CN202111333798 A CN 202111333798A CN 114082899 A CN114082899 A CN 114082899A
- Authority
- CN
- China
- Prior art keywords
- sand
- casting
- mold
- clay
- way valve
- 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
Links
- 238000005266 casting Methods 0.000 title claims abstract description 132
- 239000004576 sand Substances 0.000 claims abstract description 163
- 239000004927 clay Substances 0.000 claims abstract description 93
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000000465 moulding Methods 0.000 claims abstract description 31
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 238000007528 sand casting Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims description 4
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000010112 shell-mould casting Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing
-
- 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
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
-
- 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)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a casting process of a chip type multi-way valve, and aims to improve the casting qualification rate and efficiency of the chip type multi-way valve. Therefore, the casting process of the plate type multi-way valve provided by the embodiment of the invention comprises the following steps: respectively finishing the manufacture of an upper clay sand casting mold and a lower clay sand casting mold by an automatic molding machine; completing the manufacture of a film-coated sand core through a core shooter, and filling the film-coated sand core into a clay sand lower casting mold; and (3) reversely buckling the clay sand upper casting mold on the clay sand lower casting mold to complete mold assembling of the casting mold, so that a casting cavity and a pouring system communicated with the casting cavity are formed between the clay sand upper casting mold and the clay sand lower casting mold, injecting molten iron into the casting cavity by using the pouring system, and opening the mold after the molten iron is condensed to obtain the multi-way valve casting.
Description
Technical Field
The invention belongs to the technical field of valve body casting, and particularly relates to a casting process of a sheet type multi-way valve.
Background
The plate type multi-way valve is used as a key part of an excavator, and because the complexity of an internal oil passage is high and the internal oil passage bears high oil pressure, a valve body casting is required to have high mechanical performance, tissue compactness and strict dimensional precision. In the casting process, because the internal flow passage of the valve body is complex, in order to ensure the strength, the traditional casting process divides the middle oil duct sand core into a plurality of sand cores and adopts a hot core box for production, the external mold adopts precoated sand, and a local hot section is provided with a riser, so that the problems of poor surface quality, high rejection rate and the like are easily caused, and the defects of shrinkage porosity, core breakage, size super-difference and the like are easily caused in the production.
Therefore, how to improve the casting yield of the plate type multi-way valve is a technical problem which needs to be solved by the technical personnel in the field at present.
Disclosure of Invention
The invention mainly aims to provide a casting process of a chip multi-way valve, and aims to improve the casting qualification rate of the chip multi-way valve.
Therefore, the casting process of the plate type multi-way valve provided by the embodiment of the invention comprises the following steps:
respectively finishing the manufacture of an upper clay sand casting mold and a lower clay sand casting mold by an automatic molding machine;
completing the manufacture of a film-coated sand core through a core shooter, and filling the film-coated sand core into a clay sand lower casting mold;
the clay sand upper casting mold is reversely buckled on the clay sand lower casting mold to complete mold closing of the casting mold, so that a casting cavity and a pouring system communicated with the casting cavity are formed between the clay sand upper casting mold and the clay sand lower casting mold;
and injecting molten iron into the casting cavity by using a pouring system, and opening the box after the molten iron is condensed to obtain the multi-way valve casting.
The method specifically comprises the following steps:
step 1: designing a set of clay sand mold molds with the same shape as the sheet type multi-way valve, and designing a set of precoated sand core molds with the same shape as the inner shape of the flow passage inside the sheet type multi-way valve;
step 2: installing the film-coated sand core mold on a core shooting machine, closing the mold, injecting film-coated sand, heating and curing, taking out the sand core, correcting, coating, and baking to obtain a film-coated sand core;
and step 3: placing a clay sand mold between an upper sand frame and a lower sand frame of an automatic molding line upper molding machine, and driving the three to be closed by using a mold opening and closing mechanism, so that an upper sand shooting cavity is formed between the clay sand mold and the upper sand frame, and a lower sand shooting cavity is formed between the clay sand mold and the lower sand frame;
and 4, step 4: clay sand is injected into the upper sand injection cavity and the lower sand injection cavity, and after the clay sand in the lower sand injection cavity is compressed by using the pressing plate, the lower sand frame and the clay sand mold are driven to integrally move upwards by using the mold opening and closing mechanism, so that the clay sand in the upper sand injection cavity is compressed;
and 5: driving the upper sand frame, the lower sand frame and the clay sand mold to open the mold by using the mold opening and closing mechanism, so as to form a clay sand upper casting mold in the upper sand frame and a clay sand lower casting mold in the lower sand frame;
step 6: the clay sand mold is moved away from the position between the upper sand frame and the lower sand frame by using a mold opening and closing mechanism, and the clay sand lower casting mold is ejected out of the lower sand frame by using a pressing plate;
and 7: loading the film-coated sand core into a clay sand lower casting mold, placing a filter disc in a pouring system, driving the clay sand lower casting mold to move upwards by using a mold opening and closing mechanism, and reversely buckling the clay sand lower casting mold on the clay sand lower casting mold;
and 8: driving the upper sand frame to move upwards by using the mold opening and closing mechanism, and separating the clay sand lower casting mold from the upper sand frame to complete mold assembling of the casting mold;
and step 9: and pushing the casting mold into an automatic casting line by using a push plate on the automatic molding line for casting, and cooling to obtain the multi-way valve casting.
Specifically, the pouring temperature of the molten iron is 1400-1430 ℃, and the heat preservation time is 2-2.5 hours.
Specifically, the sand shooting pressure of the core shooting machine is 0.35-0.55MPa, the time is 5-9s, the heating and curing temperature is 200-220 ℃, and the heating and curing time is 120-180 s.
Specifically, the sand shooting pressure of the molding machine is 0.50-0.65MPa, the sand shooting time is 2-4s, the compaction time is 1.6-2.22s, and the surface strength of the casting mold is 80-95 ℃.
Specifically, the gating system comprises a sprue, a cross gate, a riser and an ingate which are connected in sequence, and the ingate is communicated with the casting cavity.
Specifically, the lower bottom surface of the sprue is lower than the lower surface of the runner.
Specifically, the sprue is connected with the middle part of the cross gate, two ends of the cross gate are respectively connected with one riser, two ingates are symmetrically arranged on two sides of the cross gate on each riser, and each ingate is connected with one casting cavity.
Specifically, filter screens are arranged on two sides of the sprue in the cross gate.
Specifically, the molten iron is QT500-7 nodular cast iron.
Compared with the prior art, the invention has the following beneficial effects:
1. the casting mold is compacted by an automatic molding machine, the surface hardness of the casting mold reaches 80-95, the strength and the rigidity of the casting mold are greatly improved, the deformation and the shrinkage porosity caused by molten iron shrinkage and graphite expansion in the solidification process can be well avoided, and compared with resin sand molding, the casting mold has the advantages of low cost, capability of reducing the discharge of resin, and safety and environmental protection.
2. By adopting the precoated sand core, the good collapsibility of the precoated sand can be utilized, and the sand cleaning of the internal flow passage of the casting is easy while the precision and the surface finish of the flow passage of the valve body are ensured.
3. Using an automatic molding line: the efficiency is greatly improved: traditional hand modeling: 12 cases/hour; and the automatic molding line is 80-120 boxes/hour; the efficiency is improved: 13 times. The traditional casting process comprises the following steps: 15000 pieces/year (5 persons); moulding line: greater than 640000 pieces/year (3 people).
4. The clay sand automatic molding line is adopted, manual box opening, box turning, positioning and box closing are reduced, parting fash polishing is less, labor intensity is greatly reduced, and manual labor intensity of 27min per piece is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a mold according to an embodiment of the present invention after it is molded;
FIG. 2 is a schematic top view of a mold according to an embodiment of the present invention after it is closed;
wherein: 1. casting clay sand on a mold; 2. lower casting mould of clay sand; 3. laminating a sand core; 4. a casting cavity; 5. a pouring system; 501. a sprue; 502. a cross gate; 503. a riser; 504. an inner pouring channel; 6. and (4) a filter screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 and 2, a chip type multi-way valve casting process comprises the steps of respectively completing the manufacture of an upper clay sand casting mold 1 and a lower clay sand casting mold 2 through an automatic molding machine, completing the manufacture of a film-coated sand core 3 through a core shooting machine, filling the film-coated sand core 3 into the lower clay sand casting mold 2, inversely buckling the upper clay sand casting mold 1 on the lower clay sand casting mold 2 to complete mold assembly, forming a casting cavity 4 and a pouring system 5 communicated with the casting cavity 4 between the upper clay sand casting mold 1 and the lower clay sand casting mold 2, injecting molten iron into the casting cavity 4 through the pouring system 5, and opening the mold after the molten iron is condensed to obtain a multi-way valve casting.
In the embodiment, the clay sand compaction casting mold is adopted, so that the strength and the rigidity of the casting mold are greatly improved, the deformation and shrinkage porosity caused by molten iron shrinkage and graphite expansion in the solidification process can be well avoided, and compared with a resin sand molding, the clay sand compaction casting mold has the advantages of low cost, safety and environmental friendliness; by adopting the precoated sand core 3, the good collapsibility of the precoated sand can be utilized, and the sand cleaning of the internal flow passage of the casting is easy while the precision and the surface finish of the flow passage of the valve body are ensured.
Referring to fig. 1 and 2, in some embodiments, the gating system 5 includes a sprue 501, a runner 502, a riser 503, and an ingate 504 connected in series, the ingate 504 communicating with the casting cavity 4. By the design, according to the principle of sequential solidification, liquid metal flows into the casting cavity 4 from the sprue 501 and the cross runner 502 through the sprue 504 via the riser 503, molten iron enters the cavity stably, the sand core and the cavity are slightly washed, turbulence is not generated, and gas and slag are prevented from being involved.
Referring to fig. 1, in some embodiments, the lower bottom surface of the sprue 501 is lower than the lower surface of the runner 502, and this arrangement enables the liquid metal to flow into the ingate 504 through the runner 502 after filling, so as to avoid the liquid metal from flowing into the runner 502 directly, thereby improving the casting quality of the casting.
Referring to fig. 1, in other embodiments, the sprue 501 is connected with the middle of the runner 502, two ends of the runner 502 are respectively connected with a riser 503, two ingates 504 are symmetrically arranged on two sides of the runner 502 on each riser 503, each ingate 504 is connected with a casting cavity 4, and the ingates 504 are arranged in the central symmetrical position of the valve body. By the design mode, four castings can be produced by one die, and the production efficiency is high.
Referring to fig. 1, in other embodiments, to prevent impurities from flowing into the cavity, filter screens 6 are arranged in the horizontal runner 502 on both sides of the sprue 501, and a sprue cup can be additionally arranged at the top of the sprue 501.
The casting process specifically comprises the following steps:
step 1: a set of clay sand mold dies (upper die and lower die) which are consistent with the shape of the plate-type multi-way valve are designed, and a set of precoated sand core dies (containing machining allowance and coating allowance) which are consistent with the inner shape of the internal runner of the plate-type multi-way valve are designed.
Step 2: installing the film-coated sand core mold on a core shooting machine, closing the mold, injecting film-coated sand, heating and curing, taking out the sand core, correcting, coating, and baking to obtain a film-coated sand core 3; wherein, the sand shooting pressure of the core shooter: 0.35-0.55MPa, time: 5-9s, heating and curing temperature: 200-220 ℃, heating and curing time: 120-.
And step 3: the clay sand mold is arranged between an upper sand frame and a lower sand frame of an automatic molding line upper molding machine, and the mold opening and closing mechanism is utilized to drive the upper sand frame and the lower sand frame to be closed, so that an upper sand shooting cavity is formed between the clay sand mold and the upper sand frame, and a lower sand shooting cavity is formed between the clay sand mold and the lower sand frame.
And 4, step 4: clay sand is injected into the upper sand injection cavity and the lower sand injection cavity, and after the clay sand in the lower sand injection cavity is compressed by using the pressing plate, the lower sand frame and the clay sand mold are driven to integrally move upwards by using the mold opening and closing mechanism, so that the clay sand in the upper sand injection cavity is compressed; wherein, the molding machine sand shooting pressure: 0.50-0.65MPa, sand shooting time: 2-4s, compacting: 1.6-2.22s, mold surface strength: 80-95 degrees.
And 5: driving the upper sand frame, the lower sand frame and the clay sand mold to open the mold by using the mold opening and closing mechanism, so as to form a clay sand upper casting mold 1 in the upper sand frame and a clay sand lower casting mold 2 in the lower sand frame;
step 6: the clay sand mold die is moved away from the position between the upper sand frame and the lower sand frame by using a die opening and closing mechanism, and the clay sand lower casting mold 2 is ejected out of the lower sand frame by using a pressing plate;
and 7: loading the film-coated sand core 3 into the clay sand lower casting mold 2, placing a filter plate in the pouring system 5, driving the clay sand lower casting mold 2 to move upwards by using a mold opening and closing mechanism, and inversely buckling the clay sand lower casting mold 2 on the clay sand lower casting mold 2;
and 8: driving the upper sand frame to move upwards by using the mold opening and closing mechanism, and separating the clay sand lower casting mold 2 from the upper sand frame to complete mold assembling of the casting mold;
and step 9: pushing the casting mold into an automatic casting line by utilizing a push plate on the automatic molding line for casting, wherein molten iron is QT500-7, and the tapping temperature of the molten iron is as follows: 1550 + 1580 ℃, pouring temperature: 1400 ℃ and 1430 ℃ and keeping the temperature inside the mold for 2-2.5 hours to obtain the multi-way valve casting.
Compared with the traditional process technology, the casting process provided by the embodiment of the invention has the following beneficial effects:
1. using an automatic molding line: the efficiency is greatly improved: traditional hand modeling: 12 cases/hour; and the automatic molding line is 80-120 boxes/hour; the efficiency is improved: 13 times, and the traditional casting process is as follows: 15000 pieces/year (5 persons); moulding line: greater than 640000 pieces/year (3 people).
2. The casting and the runner obtained by utilizing the clay sand molding machine to compact and film-coated sand core have high precision and the surface quality Ra is less than or equal to 6.3.
3. By adopting an automatic molding machine to compact the casting mold, the surface hardness of the casting mold reaches 80-95, the strength and rigidity of the casting mold are greatly improved, and the following steps are well avoided: the molten iron shrinkage and graphite expansion deformation and shrinkage porosity in the solidification process are improved by 5% compared with the original shell mold casting process.
4. Adopt clay sand automatic molding line, cost greatly reduced: the clay sand is adopted, and the cost is reduced compared with the precoated sand: 2.37 elements/piece, annual savings: 152 ten thousand yuan.
5. Adopt automatic molding line of clay sand, be more favorable to the environmental protection: compared with the traditional resin sand, the clay sand is adopted to reduce the discharge of resin, and is concentrated on a casting line for casting, so that the collection efficiency of chemical gases such as phenolic resin and the like is higher.
6. The clay sand automatic molding line is adopted, manual box opening, box turning, positioning and box closing are reduced, parting fash polishing is less, labor intensity is greatly reduced, and manual labor intensity of 27min per piece is saved.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated. Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
The above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. A casting process of a chip type multi-way valve is characterized by comprising the following steps:
respectively finishing the manufacture of an upper clay sand casting mold (1) and a lower clay sand casting mold (2) by an automatic molding machine;
completing the manufacture of the film-coated sand core (3) through a core shooter, and filling the film-coated sand core (3) into a clay sand lower casting mold (2);
reversely buckling the clay sand upper casting mold (1) on the clay sand lower casting mold (2) to complete mold assembly, thereby forming a casting cavity (4) and a pouring system (5) communicated with the casting cavity (4) between the clay sand upper casting mold (1) and the clay sand lower casting mold (2);
and injecting molten iron into the casting cavity (4) by using a pouring system (5), and opening the box after the molten iron is condensed to obtain the multi-way valve casting.
2. The chip type multi-way valve casting process according to claim 1, which comprises the following steps:
step 1: designing a set of clay sand mold molds with the same shape as the sheet type multi-way valve, and designing a set of precoated sand core molds with the same shape as the inner shape of the flow passage inside the sheet type multi-way valve;
step 2: installing the film-coated sand core mold on a core shooting machine, closing the mold, injecting film-coated sand, heating and curing, taking out the sand core, correcting, coating, and baking to obtain a film-coated sand core (3);
and step 3: placing a clay sand mold between an upper sand frame and a lower sand frame of an automatic molding line upper molding machine, and driving the three to be closed by using a mold opening and closing mechanism, so that an upper sand shooting cavity is formed between the clay sand mold and the upper sand frame, and a lower sand shooting cavity is formed between the clay sand mold and the lower sand frame;
and 4, step 4: clay sand is injected into the upper sand injection cavity and the lower sand injection cavity, and after the clay sand in the lower sand injection cavity is compressed by using the pressing plate, the lower sand frame and the clay sand mold are driven to integrally move upwards by using the mold opening and closing mechanism, so that the clay sand in the upper sand injection cavity is compressed;
and 5: driving the upper sand frame, the lower sand frame and the clay sand mold to open the mold by using the mold opening and closing mechanism, so as to form a clay sand upper casting mold (1) in the upper sand frame and a clay sand lower casting mold (2) in the lower sand frame;
step 6: the clay sand mold die is moved away from the position between the upper sand frame and the lower sand frame by using a die opening and closing mechanism, and the clay sand lower casting mold (2) is ejected out of the lower sand frame by using a pressing plate;
and 7: the coated sand core (3) is placed into the clay sand lower casting mold (2), a filter disc is placed in a pouring system (5), the clay sand lower casting mold (2) is driven to move upwards by a mold opening and closing mechanism, and the clay sand lower casting mold (2) is reversely buckled on the clay sand lower casting mold (2);
and 8: driving the upper sand frame to move upwards by using the mold opening and closing mechanism, and separating the clay sand lower casting mold (2) from the upper sand frame to complete mold assembling of the casting mold;
and step 9: and pushing the casting mold into an automatic casting line by using a push plate on the automatic molding line for casting, and cooling to obtain the multi-way valve casting.
3. The casting process of the chip multi-way valve as claimed in claim 2, wherein the molten iron pouring temperature is 1400-1430 ℃ and the heat preservation time is 2-2.5 hours.
4. The chip type multi-way valve casting process according to claim 2, wherein: the sand shooting pressure of the core shooting machine is 0.35-0.55MPa, the time is 5-9s, the heating curing temperature is 200-220 ℃, and the curing time is 120-180 s.
5. The chip type multi-way valve casting process according to claim 2, wherein: the sand shooting pressure of the molding machine is 0.50-0.65MPa, the sand shooting time is 2-4s, the compaction time is 1.6-2.22s, and the surface strength of the casting mold is 80-95 ℃.
6. The process for casting the plate type multiway valve according to any of claims 1-5, wherein: the pouring system (5) comprises a sprue (501), a cross runner (502), a riser (503) and an ingate (504) which are connected in sequence, and the ingate (504) is communicated with the casting cavity (4).
7. The chip type multi-way valve casting process according to claim 6, wherein: the lower bottom surface of the sprue (501) is lower than the lower surface of the runner (502).
8. The chip type multi-way valve casting process according to claim 6, wherein: the sprue (501) is connected with the middle part of the cross gate (502), two ends of the cross gate (502) are respectively connected with one riser (503), two ingates (504) are symmetrically arranged on two sides of each riser (503) on the cross gate (502), and each ingate (504) is connected with one casting cavity (4).
9. The chip type multi-way valve casting process according to claim 8, wherein: and filter screens (6) are arranged on two sides of the sprue (501) in the horizontal runner (502).
10. The chip type multi-way valve casting process according to claim 6, wherein: the molten iron is QT500-7 nodular cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111333798.8A CN114082899A (en) | 2021-11-11 | 2021-11-11 | Casting process of sheet type multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111333798.8A CN114082899A (en) | 2021-11-11 | 2021-11-11 | Casting process of sheet type multi-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114082899A true CN114082899A (en) | 2022-02-25 |
Family
ID=80299895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111333798.8A Pending CN114082899A (en) | 2021-11-11 | 2021-11-11 | Casting process of sheet type multi-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114082899A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114632913A (en) * | 2022-03-23 | 2022-06-17 | 山河智能装备股份有限公司 | Casting method |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468384A (en) * | 2007-12-25 | 2009-07-01 | 南通华东液压铸业有限公司 | Multi-layer multiplex hydraulic valve mold and casting technique thereof |
| CN101695744A (en) * | 2009-11-13 | 2010-04-21 | 南通华东液压铸业有限公司 | Modeling device for double proportion control valve body |
| CN102430716A (en) * | 2010-11-02 | 2012-05-02 | 江苏力源金河铸造有限公司 | Sand core manufacturing process for main body of valve body of multi-path valve |
| CN202398787U (en) * | 2012-03-25 | 2012-08-29 | 山西方盛液压机电设备有限公司 | Hydraulic servo controlled full-automatic clay sand molding machine |
| CN202683941U (en) * | 2012-08-08 | 2013-01-23 | 海安县万力铸造有限公司 | Iron mould sand covering crank throw tool |
| CN203371007U (en) * | 2013-06-01 | 2014-01-01 | 长葛市同生机械有限公司 | Full-automatic double-station, vertical molding, horizontal parting and flask-striped shooting-squeezing molding machine |
| CN103862001A (en) * | 2012-12-18 | 2014-06-18 | 潍坊爱莱达真空科技有限公司 | Rotor processing and separator plate casting technologies of oil-free claw-shaped vertical pump |
| CN103962504A (en) * | 2014-05-23 | 2014-08-06 | 山东常林机械集团股份有限公司 | Casting process for hydraulic main control valve blank |
| CN105033190A (en) * | 2015-07-15 | 2015-11-11 | 瑞龙液压（徐州）有限公司 | Method for producing high-precision hydraulic valve casting |
| CN205464183U (en) * | 2016-02-24 | 2016-08-17 | 河南省汤阴县华兴机械制造有限公司 | Brake tile holds in palm casting sand mo(u)ld |
| CN109622885A (en) * | 2019-01-18 | 2019-04-16 | 山东鸿源新材料有限公司 | The production technology of aluminium alloy condenser boiler piece |
| CN111531131A (en) * | 2020-05-29 | 2020-08-14 | 江苏恒立液压股份有限公司 | Casting sand core of plate valve and casting process of plate valve |
| CN212945281U (en) * | 2020-08-06 | 2021-04-13 | 常州钜苓铸造有限公司 | Flange shell casting die |
| CN112958746A (en) * | 2021-05-17 | 2021-06-15 | 宁波全力机械模具有限公司 | Core set for casting hydraulic multi-way valve, manufacturing method thereof and casting method of multi-way valve |
| CN113441681A (en) * | 2021-06-29 | 2021-09-28 | 山河智能装备股份有限公司 | Sand-coated sand casting mold for multi-way valve |
-
2021
- 2021-11-11 CN CN202111333798.8A patent/CN114082899A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468384A (en) * | 2007-12-25 | 2009-07-01 | 南通华东液压铸业有限公司 | Multi-layer multiplex hydraulic valve mold and casting technique thereof |
| CN101695744A (en) * | 2009-11-13 | 2010-04-21 | 南通华东液压铸业有限公司 | Modeling device for double proportion control valve body |
| CN102430716A (en) * | 2010-11-02 | 2012-05-02 | 江苏力源金河铸造有限公司 | Sand core manufacturing process for main body of valve body of multi-path valve |
| CN202398787U (en) * | 2012-03-25 | 2012-08-29 | 山西方盛液压机电设备有限公司 | Hydraulic servo controlled full-automatic clay sand molding machine |
| CN202683941U (en) * | 2012-08-08 | 2013-01-23 | 海安县万力铸造有限公司 | Iron mould sand covering crank throw tool |
| CN103862001A (en) * | 2012-12-18 | 2014-06-18 | 潍坊爱莱达真空科技有限公司 | Rotor processing and separator plate casting technologies of oil-free claw-shaped vertical pump |
| CN203371007U (en) * | 2013-06-01 | 2014-01-01 | 长葛市同生机械有限公司 | Full-automatic double-station, vertical molding, horizontal parting and flask-striped shooting-squeezing molding machine |
| CN103962504A (en) * | 2014-05-23 | 2014-08-06 | 山东常林机械集团股份有限公司 | Casting process for hydraulic main control valve blank |
| CN105033190A (en) * | 2015-07-15 | 2015-11-11 | 瑞龙液压（徐州）有限公司 | Method for producing high-precision hydraulic valve casting |
| CN205464183U (en) * | 2016-02-24 | 2016-08-17 | 河南省汤阴县华兴机械制造有限公司 | Brake tile holds in palm casting sand mo(u)ld |
| CN109622885A (en) * | 2019-01-18 | 2019-04-16 | 山东鸿源新材料有限公司 | The production technology of aluminium alloy condenser boiler piece |
| CN111531131A (en) * | 2020-05-29 | 2020-08-14 | 江苏恒立液压股份有限公司 | Casting sand core of plate valve and casting process of plate valve |
| CN212945281U (en) * | 2020-08-06 | 2021-04-13 | 常州钜苓铸造有限公司 | Flange shell casting die |
| CN112958746A (en) * | 2021-05-17 | 2021-06-15 | 宁波全力机械模具有限公司 | Core set for casting hydraulic multi-way valve, manufacturing method thereof and casting method of multi-way valve |
| CN113441681A (en) * | 2021-06-29 | 2021-09-28 | 山河智能装备股份有限公司 | Sand-coated sand casting mold for multi-way valve |
Non-Patent Citations (2)
| Title |
|---|
| 侯华 等: "《液态成型工艺及CAD》", vol. 1, 国防工业出版社, pages: 70 - 71 * |
| 王守仁;刘延利;朱艳华;郭培全;王敏;: "液压多路阀蠕铁阀体铸造工艺与微观组织分析", 热加工工艺, no. 01, pages 85 - 87 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114632913A (en) * | 2022-03-23 | 2022-06-17 | 山河智能装备股份有限公司 | Casting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104707939A (en) | Cast sand core for cylinder cover of diesel engine | |
| CN204486722U (en) | The casting sand core of diesel engine cylinder cover | |
| CN101376163B (en) | Technique for forming class form of flange bolt hole casting parts | |
| CN113441681B (en) | Sand-coated sand casting die for multi-way valve sand mold | |
| CN110385404B (en) | Casting process design method for preparing complex oil line pipe casting by 3D printing sand mold | |
| CN111774537A (en) | Thin-wall complex cylinder body type iron casting shell mold pouring system and casting process | |
| CN113579165A (en) | Casting structure and method for vertical casting process sand core combination of diesel engine cylinder cover core assembly | |
| CN114082899A (en) | Casting process of sheet type multi-way valve | |
| CN109332585B (en) | Sprocket sand mold and method for casting sprocket by using sprocket sand mold | |
| CN109465403B (en) | Casting process of low-flow casting of submersible pump | |
| CN218926149U (en) | Casting die of gear box shell | |
| CN208245748U (en) | A kind of bear-sleeve casting mold | |
| CN116037861A (en) | Casting process of central rotary joint | |
| CN212857629U (en) | Module containing hollow wax mold gate | |
| CN102107258A (en) | Valve body wax mold of tri-eccentric butt-clamped metal sealing butterfly valve | |
| KR101340890B1 (en) | Casting molds and casting method using the same | |
| CN216680093U (en) | Sheet type multi-way valve casting mold | |
| CN114632913A (en) | Casting method | |
| CN212577448U (en) | Bearing seat die | |
| CN210702350U (en) | Mould for casting flywheel by shell mould core process | |
| CN114247864A (en) | High-strength high-heat-conductivity composite brake drum sand mold shell, shell mold and shell product | |
| CN210387469U (en) | Sand mold structure of differential mechanism shell of electric automobile driving system | |
| CN209255762U (en) | A kind of sprocket wheel sand mold | |
| CN219151507U (en) | Casting die for steel feeding plate | |
| CN102886495A (en) | General combined iron mold for iron mold sand-coating and casting production |
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 |