CN108580809A - A kind of three valve body of monoblock type and its casting technique - Google Patents
A kind of three valve body of monoblock type and its casting technique Download PDFInfo
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- CN108580809A CN108580809A CN201810631532.3A CN201810631532A CN108580809A CN 108580809 A CN108580809 A CN 108580809A CN 201810631532 A CN201810631532 A CN 201810631532A CN 108580809 A CN108580809 A CN 108580809A
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- hole
- oil groove
- annulus
- valve body
- core
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Classifications
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- 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
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- 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
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Valve Housings (AREA)
Abstract
The present invention relates to metal valve body, more particularly to a kind of three valve body of monoblock type and its casting technique.A kind of three valve body moulding, including valve body ontology, the valve inner is equipped with valve core through hole, sprue, through-hole, auxiliary flow, annulus oil groove and roundlet endless-oil groove, the auxiliary flow and internal sprue are for connecting the valve core through hole and through-hole, the annulus oil groove and roundlet endless-oil groove are set on valve core through hole, through-hole and auxiliary flow, the opening of the through-hole is connected positioned at each surface of valve body with valve body auxiliary flow.Its casting technique includes that shell mould makes, loam core makes, loam core assembling, loam core is covered with paint, lacquer, colour wash, etc., loam core and shell mould assembly, molding operation, smelting operation, pouring operation and casting cleaning are examined.Three valve body of monoblock type of the present invention has the advantages that integrated level is high, and space structure is small, inner flow passage accurate size, long lifespan, inner surface cleanliness factor is high, and the scope of application is wider.
Description
Technical field
The present invention relates to metal valve body, more particularly to a kind of three valve body of monoblock type and its casting technique.
Background technology
This valve body is farm machinery hydraulic system key components and parts, and former valve body is mostly the assembling of multichannel chip valve body, but is assembled
Valve body is there are assembly type valve space structure is big, the defects of easy to leak.Monolithic construction valve body substitutes chip valve, monoblock type valve body
Cast-internal is complicated, and castings production is big.Meanwhile miscarriage is complicated inside triplet, the sand core of making be easily deformed and
Fracture, it is difficult to ensure that channel size precision.
The cleanliness factor of casting inner surface directly affects liquid in valve body and flows, to influence the efficiency of complete machine.General blank
It needs to eat by blasting treatment and cleaning, cost is caused to increase, and still it cannot be guaranteed that quality, there are local sandblastings not to do
Only, increase the difficulty of inspection.There is excellent surface smoothness and few than the casting do not coated using the casting after coating
Clearance time.The prior art in loam core surface dip-coating alcohol radical graphite paint, but dope layer it is relatively thin in molten iron cavity filling process because of temperature
Du Taigaoyi scaling loss and lose the protective effect to loam core surface, it is still desirable to blasting treatment.
Invention content
The technical problem to be solved by the present invention is to prevent cast-internal from deforming, ensure table in the dimensional accuracy and casting of casting
The cleanliness factor in face ensures the problem of casting is without shrinkage cavity and the defects of stomata.
In order to solve the above technical problems, the invention discloses a kind of three valve body of monoblock type and its casting techniques.
A kind of three valve body moulding, including valve body, the valve inner are equipped with valve core through hole, sprue, through-hole, auxiliary
It includes the first valve core through hole, the second valve core through hole and third valve to help runner, annulus oil groove and roundlet endless-oil groove, the valve core through hole
Core through-hole, first valve core through hole, the second valve core through hole and the setting of third valve core through hole parallel equidistant and the center of circle are located at same
On straight line, the auxiliary flow and internal sprue are for connecting the valve core through hole and through-hole, the annulus oil groove and small
Annulus oil groove is set on valve core through hole, through-hole and auxiliary flow, and the opening of the through-hole is located at each surface of valve body, and and valve
Body auxiliary flow is connected.
Further, the first valve core through hole, the second valve core through hole and third valve core through hole run through the front and rear surfaces of valve body,
And the section radius phase of the section radius of first valve core through hole, the section radius of the second valve core through hole and third valve core through hole
Together.
Further, the first valve core through hole, which passes through, sets there are six annulus oil groove and two roundlet endless-oil grooves,
It is followed successively by the first annulus oil groove to the 6th annulus oil groove and the first roundlet endless-oil groove, the second roundlet endless-oil groove；Second spool
Through-hole, which passes through, to be set there are six annulus oil groove and two roundlet endless-oil grooves, is followed successively by the 7th annulus oil groove to the
12 annulus oil grooves and third roundlet endless-oil groove, the 4th roundlet endless-oil groove；The third valve core through hole, which passes through, to be set
There are six annulus oil groove and two roundlet endless-oil grooves, are followed successively by the 13rd annulus oil groove to the 18th annulus oil groove and the 5th roundlet
Endless-oil groove, the 6th roundlet endless-oil groove.
Further, third annulus oil groove and the connection of the tenth annulus oil groove, the 9th annulus oil groove and the 16th annulus oil groove
It is connected, the 15th annulus oil groove is connected with sprue by the second auxiliary oil channel.
Further, sprue passes through the first annulus oil groove, the 7th annulus oil groove, the 13rd annulus oil groove, the 18th circle
Endless-oil groove, the 12nd annulus oil groove and the 6th annulus oil groove form a big closure runner.
The through-hole includes the first to the 12nd through-hole, and the auxiliary flow includes the first to 19 auxiliary flow and N-shaped
Auxiliary flow.
Further, third roundlet endless-oil groove and the 4th roundlet endless-oil groove are connected by N-shaped auxiliary flow.
Further, the 6th through-hole is connected with the 11st annulus oil groove by the 4th auxiliary oil channel, the 7th through-hole
It is connected across N-shaped auxiliary flow with the first auxiliary oil channel, the 8th through-hole and the 8th annulus oil groove assist oil by third
Road is connected.
Further, the second through-hole, fourth hole, the 7th through-hole and the tenth through-hole is vertical with the first auxiliary flow respectively connects
It is logical, fourth hole, the 7th through-hole and the tenth through-hole bottom position be respectively equipped with the 7th roundlet endless-oil groove, the 8th roundlet endless-oil groove and
9th roundlet endless-oil groove.
Further, the first auxiliary flow and sprue vertical connection, the 4th auxiliary oil channel, the 5th auxiliary flow, the 6th
Auxiliary oil channel, the 7th auxiliary flow and the tenth auxiliary flow and sprue are interconnected.
Further, the 12nd through-hole and the first through hole and the second through-hole bottom end vertical connection, and the 12nd through-hole
Centre position is equipped with the 19th annulus oil groove；12nd through-hole is connected with sprue by the 9th auxiliary flow, and the
Nine auxiliary flows and the 12nd through-hole, sprue are perpendicular.
A kind of three valve body casting technique of monoblock type, the technique include the following steps：
S1, shell mould make, and using precoated sand material shell, ensure the surface accuracy of casting；
S2, loam core make, and using the coremaking of chromite sand material and place arbor, prevent loam core deformation and fracture；
Loam core placement is carried out bonding assembling, ensures loam core assembling accurate positioning by S3, loam core assembling inside the shell；
S4, loam core are covered with paint, lacquer, colour wash, etc., and after the adhesive solidification completely of loam core assembling, are dried after being covered with paint, lacquer, colour wash, etc. using zircon flour coating, table
One layer of graphite powder alcohol-based coating of face re-finishing, the defects of avoiding generating scab sintering；
S5, loam core and shell mould assemble, and stud is placed between loam core and shell, solve sand core breakage problem；It is described
Stud is set at main aperture；
S6, molding operation are buried shell mould arenaceous shell and loam core gas vent whole steel wire using resin sand and are exported, wait for die bed make and
After resin sand is fully hardened, steel wire is extracted, ensures that venthole is unobstructed, improving exhaust capacity prevents the generation of stomata；
S7, smelting operation refer to preparing potting syrup by castings desire, and carry out late inoculation processing to potting syrup before pouring into a mould,
And each chemical component weight percentage is detected by stokehold thermal analyzer；
S8, pouring operation refer to that molten iron is passed through pouring and riser systems injection type intracavitary；
S9, casting cleaning are examined, and cast(ing) surface ball blast operates and carries out strength sandblasting to runner after demoulding, ensures casting table
Face must not have the defects of stomata sand hole, and must not have the defects of fleshiness, misrun, scab inside runner.
Further, the Baume degrees of coating is controlled in é -11 ° of B é of 8 ° of B.
Preferably, the column structure and surface that stud is section 8.5mm × 2.26mm are zinc-plated.
Further, on the inside of its shell mould outer surface of molding operation and sandbox between cover layer of sand, be equipped in layer of sand and shell mould
The pouring and riser systems of connection, pouring and riser systems include running channel and the riser of quantity equity；Sprue channel open between the shell mould and layer of sand
It is covered with one layer of barrier paper, prevents the sand when covering layer of sand from falling into cavity, influences the qualification rate of product.
Preferably, the chemical component weight percentage of potting syrup is as follows:C:3.10%-3.25%, Si:1.20%-
1.50%, Mn:0.90%-1.30%, P≤0.12%, S≤0.02% are Fe with amount.
Further, the late inoculation processing refers to going in molten iron that silicon barium powder progress inoculation is added in cast,
The whole silicon amount for adjusting molten iron, controls the hardness of casting.
Further, the stokehold thermal analyzer detection is used for controlling carbon and silicon weight percent, and C mass fractions are
3.10%-3.25%, Si mass fraction are 1.2%-1.5%.
Preferably, the stokehold thermal analyzer detection molten iron sampling must be below molten iron level 100mm.
Preferably, the pouring operation refers to that molten iron is passed through pouring and riser systems injection type intracavitary, pouring temperature 1390-
1420 DEG C, the duration of pouring is 8-20 seconds, then carries out heat preservation operation, and soaking time is 40-80 minutes.
Further, the valve body passes through casting integrated molding.
It is of the present invention to have the advantages that using above-mentioned technical proposal：
1) three valve body of monoblock type of the present invention, integrated level is high, and space structure is small, inner flow passage accurate size, and long lifespan is interior
Surface cleanliness is high, applied widely；
2) present invention is cast in process of setting and fixes and supports with stud is arranged between loam core and shell in shell operation
Loam core ensures the shape and precision of valve flowing channel；
3) assembling of loam core of the present invention carries out inside the shell, ensures loam core assembling accurate positioning, and apply to loam core
Decorations, are dried, one layer of graphite powder alcohol-based coating of surface re-finishing after being covered with paint, lacquer, colour wash, etc. using zircon flour coating, avoid generating scab sintering etc.
Defect；
4) late inoculation processing is carried out to potting syrup before present invention cast, adjusts the whole silicon amount of molten iron, controls the hard of casting
Degree.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is three valve body front views；
Fig. 2 is three valve body vertical views；
Fig. 3 is valve A-A sectional views；
Fig. 4 is valve B-B sectional views；
Fig. 5 is valve body C-C sectional views；
Fig. 6 is valve body D-D sectional views；
Fig. 7 is valve body E-E sectional views；
Fig. 8 is valve body F-F sectional views.
It remarks additionally below to attached drawing：
1- valve bodies；The first valve core through hole of 21-；The second valve core through hole of 22-；23- third valve core through hole；The 4th spools of 24- are logical
Hole；3- sprues；401- first through hole；The second through-holes of 402-；403- third through-holes；404- fourth holes；405- fifth holes；
The 6th through-holes of 406-；The 7th through-holes of 407-；The 8th through-holes of 408-；The 9th through-holes of 409-；The tenth through-holes of 410-；411- the 11st is logical
Hole；The 12nd through-holes of 412-；The first auxiliary flows of 501-；The second auxiliary flows of 502-, 503- third auxiliary flows；504- the 4th
Auxiliary flow；The 5th auxiliary flows of 505-；The 6th auxiliary flows of 506-；The 7th auxiliary flows of 507-；The 8th auxiliary flows of 508-；
The 9th auxiliary flows of 509-；The tenth auxiliary flows of 510-；511-n type auxiliary flows；601- the first annulus oil grooves；602- second justifies
Endless-oil groove；603- third annulus oil grooves；The 4th annulus oil grooves of 604-；The 5th annulus oil grooves of 605-；The 6th annulus oil grooves of 606-；
The 7th annulus oil grooves of 607-；The 8th annulus oil grooves of 608-；The 9th annulus oil grooves of 609-；The tenth annulus oil grooves of 610-；611- the tenth
One annulus oil groove；The 12nd annulus oil grooves of 612-；The 13rd annulus oil grooves of 613-；The 14th annulus oil grooves of 614-；615- the tenth
Five annulus oil grooves；The 16th annulus oil grooves of 616-；The 17th annulus oil grooves of 617-；The 18th annulus oil grooves of 618-；619- the tenth
Nine annulus oil grooves；701- the first roundlet endless-oil grooves；702- the second roundlet endless-oil grooves；703- third roundlet endless-oil grooves；704- the 4th
Roundlet endless-oil groove；The 5th roundlet endless-oil grooves of 705-；The 6th roundlet endless-oil grooves of 706-；The 7th roundlet endless-oil grooves of 707-；708- the 8th
Roundlet endless-oil groove；The 9th roundlet endless-oil grooves of 709-.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of not making creative work it is all its
His embodiment, shall fall within the protection scope of the present invention.
Specific embodiment：
The present invention relates to metal valve body, more particularly to a kind of three valve body of monoblock type and its casting technique.
As shown in Figures 2 and 3, a kind of three valve body moulding, including valve body 1, it is logical that the valve body 1 is internally provided with spool
Hole, sprue 3, through-hole, auxiliary flow, annulus oil groove and roundlet endless-oil groove, the valve core through hole include the first valve core through hole 21,
Second valve core through hole 22 and third valve core through hole 23, first valve core through hole 21, the second valve core through hole 22 and third spool are logical
23 parallel equidistant of hole is arranged and the center of circle is located on the same line, and the auxiliary flow and internal sprue are for connecting the valve
Core through-hole and through-hole, the annulus oil groove and roundlet endless-oil groove are set on valve core through hole, through-hole and auxiliary flow, the through-hole
Opening is connected positioned at each surface of valve body 1 with valve body auxiliary flow.
First valve core through hole 21, the second valve core through hole 22 and third valve core through hole 23 run through the front and back table of valve body 1
Face, and the section radius of first valve core through hole 21, the section radius of the second valve core through hole 22 and third valve core through hole 23
Section radius is identical.
It is set there are six annulus oil groove and two roundlets as shown in Fig. 2, first valve core through hole 21 passes through
Endless-oil groove is followed successively by 601 to the 6th annulus oil groove 606 of the first annulus oil groove and the first roundlet endless-oil groove 701, the second small circle ring oil
Slot 702；Second valve core through hole 22, which passes through, to be set there are six annulus oil groove and two roundlet endless-oil grooves, according to
Secondary is 607 to the 12nd annulus oil groove 612 of the 7th annulus oil groove and third roundlet endless-oil groove 703, the 4th roundlet endless-oil groove 704；
The third valve core through hole 23, which passes through, to be set there are six annulus oil groove and two roundlet endless-oil grooves, is followed successively by the 13rd
613 to the 18th annulus oil groove 618 of annulus oil groove and the 5th roundlet endless-oil groove 705, the 6th roundlet endless-oil groove 706.
The third annulus oil groove 603 is connected to the tenth annulus oil groove 610, the 9th annulus oil groove 609 and the 16th annulus
Oil groove 616 is connected, and the 15th annulus oil groove 615 is connected with sprue 3 by the second auxiliary oil channel.
The sprue 3 passes through the first annulus oil groove 601, the 7th annulus oil groove 607, the 13rd annulus oil groove the 613, the tenth
Eight annulus oil grooves 618, the 12nd annulus oil groove 612 and the 6th annulus oil groove 606 form a big closure runner.
As shown in Figures 1 to 8, the through-hole includes the first to the 12nd through-hole, and the auxiliary flow includes the first to ten
Nine auxiliary flows and N-shaped auxiliary flow.
As shown in fig. 6, the third roundlet endless-oil groove 703 and the 4th roundlet endless-oil groove 704 pass through N-shaped auxiliary flow 511
It is connected.
6th through-hole 406 is connected with the 11st annulus oil groove 611 by the 4th auxiliary oil channel 504, and the described 7th
Through-hole 407 is connected with the first auxiliary oil channel 501 across N-shaped auxiliary flow 511, the 8th through-hole 408 and the 8th annulus oil
Slot 608 is connected by third auxiliary oil channel 503.
Second through-hole 402, fourth hole 404, the 7th through-hole 407 and the tenth through-hole 410 respectively with the first auxiliary flow
501 vertical connection of road, fourth hole 404, the 7th through-hole 407 and 410 bottom position of the tenth through-hole are respectively equipped with the 7th small circle ring
Oil groove 707, the 8th roundlet endless-oil groove 708 and the 9th roundlet endless-oil groove 709.
As shown in figure 4, first auxiliary flow 501 and 3 vertical connection of sprue, the 4th auxiliary oil channel the 504, the 5th are auxiliary
Runner 505, the 6th auxiliary oil channel 506, the 7th auxiliary flow 507 and the tenth auxiliary flow 510 is helped to be interconnected with sprue 3.
As shown in Fig. 5, Fig. 7 and Fig. 8, the 12nd through-hole 412 and 402 bottom of the first through hole 401 and the second through-hole
Vertical connection is held, and 412 centre position of the 12nd through-hole is equipped with the 19th annulus oil groove 619；12nd through-hole 412 and master
Runner 3 is connected by the 9th auxiliary flow 509, and the 9th auxiliary flow 509 hangs down with the 12nd through-hole 412,3 phase of sprue
Directly.
A kind of three valve body casting technique of monoblock type, the technique include the following steps：
S1, shell mould make, and using precoated sand material shell, ensure the surface accuracy of casting；
S2, loam core make, and using the coremaking of chromite sand material and place arbor, prevent loam core deformation and fracture；
Loam core placement is carried out bonding assembling, ensures loam core assembling accurate positioning by S3, loam core assembling inside the shell；
S4, loam core are covered with paint, lacquer, colour wash, etc., and after the adhesive solidification completely of loam core assembling, are dried after being covered with paint, lacquer, colour wash, etc. using zircon flour coating, table
One layer of graphite powder alcohol-based coating of face re-finishing, the defects of avoiding generating scab sintering；
S5, loam core and shell mould assemble, and stud is placed between loam core and shell, solve sand core breakage problem；It is described
Stud is set at main aperture；
S6, molding operation are buried shell mould arenaceous shell and loam core gas vent whole steel wire using resin sand and are exported, wait for die bed make and
After resin sand is fully hardened, steel wire is extracted, ensures that venthole is unobstructed, improving exhaust capacity prevents the generation of stomata；
S7, smelting operation refer to preparing potting syrup by castings desire, and carry out late inoculation processing to potting syrup before pouring into a mould,
And each chemical component weight percentage is detected by stokehold thermal analyzer；
S8, pouring operation refer to that molten iron is passed through pouring and riser systems injection type intracavitary；
S9, casting cleaning are examined, and cast(ing) surface ball blast operates and carries out strength sandblasting to runner after demoulding, ensures casting table
Face must not have the defects of stomata sand hole, and must not have the defects of fleshiness, misrun, scab inside runner.
The Baume degrees of the coating is controlled in é -11 ° of B é of 8 ° of B.
The stud is the column structure of section 8.5mm × 2.26mm and surface is zinc-plated.
It covers layer of sand between on the inside of its shell mould outer surface of the molding operation and sandbox, is equipped in layer of sand and is connected to shell mould
Pouring and riser systems, pouring and riser systems include running channel and the riser of quantity equity；Sprue channel open between the shell mould and layer of sand is covered with
One layer of barrier paper prevents the sand when covering layer of sand from falling into cavity, influences the qualification rate of product.
The chemical component weight percentage of the potting syrup is as follows:C:3.10%-3.25%, Si:1.20%-1.50%,
Mn:0.90%-1.30%, P≤0.12%, S≤0.02% are Fe with amount.
The late inoculation processing refers to going in molten iron that silicon barium powder progress inoculation is added in cast, adjusts molten iron
Whole silicon amount, controls the hardness of casting.
The stokehold thermal analyzer detection is used for controlling carbon and silicon weight percent, and C mass fractions are 3.10%-
3.25%, Si mass fraction are 1.2%-1.5%.
The stokehold thermal analyzer detection molten iron sampling must be below molten iron level 100mm.
The pouring operation refers to by molten iron by pouring and riser systems injection type intracavitary, and pouring temperature is 1390-1420 DEG C, is poured
It is 8-20 seconds to note the time, then carries out heat preservation operation, and soaking time is 40-80 minutes.
The three valve important technological parameters of monoblock type of the present invention are as follows:
(1) material：HT300
(2) tensile strength：≥300Mpa
(3) hardness：190—230HBW
(4) meet design size requirement
(5) without casting flaws such as burning into sand, stomata, shrinkage cavity and porosities, inner cavity without scab, without fash the defects of
(6) casting list amount：13.70kg
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of casting technique of three valve body mouldings, including shell mould makes, loam core makes, loam core assembles, loam core is covered with paint, lacquer, colour wash, etc.,
Loam core and shell mould assembly, molding operation, smelting operation, pouring operation and casting cleaning checking procedure, it is characterised in that：
The loam core makes, and using the coremaking of chromite sand material and places arbor；
Loam core placement is carried out bonding assembling, ensures loam core assembling accurate positioning by the loam core assembling inside the shell；
The loam core is covered with paint, lacquer, colour wash, etc., and after the adhesive solidification completely of loam core assembling, is dried after being covered with paint, lacquer, colour wash, etc. using zircon flour coating, surface is again
The defects of covering with paint, lacquer, colour wash, etc. one layer of graphite powder alcohol-based coating, avoiding generating scab sintering；
The molding operation buries shell mould arenaceous shell using resin sand and loam core gas vent whole steel wire exports, waits for that die bed is made and set
After fat sand is fully hardened, steel wire is extracted, ensures that venthole is unobstructed, improving exhaust capacity prevents the generation of stomata；
The smelting operation refer to by castings desire prepare potting syrup, and pour into a mould before to potting syrup carry out late inoculation processing, and
Each chemical component weight percentage is detected by stokehold thermal analyzer.
2. a kind of casting technique of three valve body moulding according to claim 1, which is characterized in that the molding operation its
Layer of sand is covered between on the inside of shell mould outer surface and sandbox, is equipped with the pouring and riser systems being connected to shell mould in layer of sand, pouring and riser systems include
The riser of running channel and quantity equity；Sprue channel open between the shell mould and layer of sand is covered with one layer of barrier paper, prevents from covering
Sand is fallen into cavity when layer of sand, influences the qualification rate of product.
3. a kind of casting technique of three valve body moulding according to claim 1, the late inoculation processing refers to pouring
Note, which is gone in molten iron, is added silicon barium powder progress inoculation, adjusts the whole silicon amount of molten iron, controls the hardness of casting.
4. a kind of three valve bodies prepared according to claim 1-3 any one of them casting techniques, it is characterised in that：Including valve
Body (1) ontology, the valve body (1) are internally provided with valve core through hole, sprue (3), through-hole, auxiliary flow, annulus oil groove and roundlet
Endless-oil groove, the valve core through hole include the first valve core through hole (21), the second valve core through hole (22) and third valve core through hole (23), institute
It states the first valve core through hole (21), the second valve core through hole (22) and the setting of third valve core through hole (23) parallel equidistant and the center of circle is located at together
On straight line, the auxiliary flow and internal sprue for connecting the valve core through hole and through-hole, the annulus oil groove and
Roundlet endless-oil groove is set on valve core through hole, through-hole and auxiliary flow, and the opening of the through-hole is located at each table of valve body (1)
Face, and be connected with valve body auxiliary flow.
5. a kind of three valve body according to claim 4, it is characterised in that：First valve core through hole (21), the second valve
Core through-hole (22) and third valve core through hole (23) run through the front and rear surfaces of valve body (1), and first valve core through hole (21)
Section radius, the section radius of the second valve core through hole (22) are identical with the section radius of third valve core through hole (23).
6. a kind of three valve body according to claim 4, it is characterised in that：First valve core through hole (21) from one end to
The other end is set there are six annulus oil groove and two roundlet endless-oil grooves, is followed successively by the first annulus oil groove (601) to the 6th annulus oil groove
(606) and the first roundlet endless-oil groove (701), the second roundlet endless-oil groove (702)；Second valve core through hole (22) is from one end to another
One end is set there are six annulus oil groove and two roundlet endless-oil grooves, is followed successively by the 7th annulus oil groove (607) to the 12nd annulus
Oil groove (612) and third roundlet endless-oil groove (703), the 4th roundlet endless-oil groove (704)；The third valve core through hole (23) is from one end
It is set to the other end there are six annulus oil groove and two roundlet endless-oil grooves, is followed successively by 613 to the 18th annulus of the 13rd annulus oil groove
Oil groove (618) and the 5th roundlet endless-oil groove (705), the 6th roundlet endless-oil groove (706).
7. a kind of three valve body according to claim 6, it is characterised in that：The third annulus oil groove (603) and the tenth
Annulus oil groove (610) is connected to, and the 9th annulus oil groove (609) is connected with the 16th annulus oil groove (616), the 15th annulus
Oil groove (615) is connected with sprue (3) by the second auxiliary oil channel (502).
8. a kind of three valve body according to claim 4, it is characterised in that：The sprue (3) passes through the first annulus oil
Slot (601), the 7th annulus oil groove (607), the 13rd annulus oil groove (613), the 18th annulus oil groove (618), the 12nd annulus
Oil groove (612) and the 6th annulus oil groove (606) form a big closure runner.
9. a kind of three valve body according to claim 4, it is characterised in that：The through-hole includes the first to the tenth two-way
Hole, the auxiliary flow include the first to 19 auxiliary flow and N-shaped auxiliary flow (511)；The third roundlet endless-oil groove
(703) it is connected by N-shaped auxiliary flow (511) with the 4th roundlet endless-oil groove (704)；First auxiliary flow (501) with
Sprue (3) vertical connection, the 4th auxiliary oil channel (504), the 5th auxiliary flow (505), the 6th auxiliary oil channel (506), the 7th
Auxiliary flow (507) and the tenth auxiliary flow (510) are interconnected with sprue (3).
10. a kind of three valve body according to claim 6, it is characterised in that：
6th through-hole (406) is connected with the 11st annulus oil groove (611) by the 4th auxiliary oil channel (504), and described
Seven through-holes (407) are connected with the first auxiliary oil channel (501) across N-shaped auxiliary flow (511), the 8th through-hole (408) with
8th annulus oil groove (608) is connected by third auxiliary oil channel (503)；
Second through-hole (402), fourth hole (404), the 7th through-hole (407) and the tenth through-hole (410) are auxiliary with first respectively
Runner (501) vertical connection, fourth hole (404), the 7th through-hole (407) and the tenth through-hole (410) bottom position is helped to set respectively
There are the 7th roundlet endless-oil groove (707), the 8th roundlet endless-oil groove (708) and the 9th roundlet endless-oil groove (709)；
12nd through-hole (412) and the first through hole (401) and the second through-hole (402) bottom end vertical connection, and the tenth
Two through-holes (412) centre position is equipped with the 19th annulus oil groove (619)；12nd through-hole (412) passes through with sprue (3)
9th auxiliary flow (509) is connected, and the 9th auxiliary flow (509) and the 12nd through-hole (412), sprue (3) are perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631532.3A CN108580809A (en) | 2018-06-19 | 2018-06-19 | A kind of three valve body of monoblock type and its casting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631532.3A CN108580809A (en) | 2018-06-19 | 2018-06-19 | A kind of three valve body of monoblock type and its casting technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108580809A true CN108580809A (en) | 2018-09-28 |
Family
ID=63628695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810631532.3A Withdrawn CN108580809A (en) | 2018-06-19 | 2018-06-19 | A kind of three valve body of monoblock type and its casting technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108580809A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110576154A (en) * | 2019-09-10 | 2019-12-17 | 南通华东油压科技有限公司 | Cushion valve casting and casting die thereof |
| CN110576155A (en) * | 2019-09-10 | 2019-12-17 | 南通华东油压科技有限公司 | Multi-way valve casting and casting method thereof |
-
2018
- 2018-06-19 CN CN201810631532.3A patent/CN108580809A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110576154A (en) * | 2019-09-10 | 2019-12-17 | 南通华东油压科技有限公司 | Cushion valve casting and casting die thereof |
| CN110576155A (en) * | 2019-09-10 | 2019-12-17 | 南通华东油压科技有限公司 | Multi-way valve casting and casting method thereof |
| CN110576154B (en) * | 2019-09-10 | 2024-04-05 | 南通华东油压科技有限公司 | Cushion valve casting |
| CN110576155B (en) * | 2019-09-10 | 2024-04-05 | 南通华东油压科技有限公司 | Multiway valve casting and casting method thereof |
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