CN205834179U - A kind of casting system of high performance spheroidal graphite cast-iron reel - Google Patents
A kind of casting system of high performance spheroidal graphite cast-iron reel Download PDFInfo
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- CN205834179U CN205834179U CN201620488635.5U CN201620488635U CN205834179U CN 205834179 U CN205834179 U CN 205834179U CN 201620488635 U CN201620488635 U CN 201620488635U CN 205834179 U CN205834179 U CN 205834179U
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Abstract
The utility model discloses the casting system of a kind of high performance spheroidal graphite cast-iron reel, including reel apperance, casting system apperance, shell, atactic copolymerized polypropene plastic hoop, the first casing that can be airtight, upper stalk, vaccum suction tube, back-up sand, can be airtight the second casing, for containing the open containers of molten iron；The spheroidal graphite cast-iron reel of this casting system output has higher combination property, the highest intensity and higher toughness, and can be applicable to large-scale or ultra-large type crane gear, churning driven and hoisting speed reducer.
Description
Technical field
This utility model relates to engineering equipment technical field, especially relates to the casting of a kind of high performance spheroidal graphite cast-iron reel
Manufacturing system.
Background technology
Reel is one of key components and parts of large lifting equipment, churning driven and hoisting speed reducer, due to the steel wire of load-bearing
Rope is directly wound on reel, and reel directly bears sling load, and crane gear, churning driven and elevator are slowed down by its quality good or not
The safe operation of machine has vital impact.Along with the developing trend of modern project is maximized, construction machinery industry is large-scale
Or the application of ultra-large type crane gear, rig and hoisting speed reducer is more and more extensive, the weight of lifting and lift are the most significantly
Degree increases.Such as: the hoisting weight of ultra-large type crane gear has reached a few kiloton；The lift of ultra-large type hoist engine has reached hundreds of
Rice.Therefore, material of reel and preparation method thereof is had higher requirement.
At present, use the reel that common spheroidal graphite cast-iron manufactures, compared with structural steel welding processing reel, tensile strength, prolong
Stretch a series of mechanical performance indexs such as rate on the low side, when therefore using reel under the bad working environments such as high load capacity, HI high impact, easily occur
Brittle crack, grooving abrasion etc. were lost efficacy, and caused potential safety hazard, seriously constrained reel at large-scale or ultra-large type construction machinery industry
Popularization and application.
In order to improve serviceability and the security performance that reel uses, recent year begins one's study high-performance nodular cast iron
Reel.The Chinese patent of Patent No. CN1900340 discloses a kind of as cast condition high strength high extensibility ductile cast iron material, and this is special
Profit each component and percentage by weight be: C 3.5～3.8%, Si 2.6～3.1%, Mn≤0.3%, S≤0.03%, P≤
0.05%, surplus is Fe.The mechanical property of its foundry goods is tensile strength sigmab>=480MPa, yield strength σ0.2>=310MPa, extends
Rate δ >=20%, cloth hardness HB is ferrite >=85% at 150-200, the metallographic structure matrix of foundry goods, cementite≤3%, phosphorus
Eutectic≤1%；The spheroidal graphite cast-iron intensity of this patent disclosure is lower slightly, it is impossible to meet the application technology index of high-performance reel.Patent
Number disclosing a kind of high-intensity high-tenacity ductile cast iron casting and preparation method thereof for the Chinese patent of CN101603142, this is special
Profit each component and percentage by weight be: C 3.6～3.8%, Si 2.4～2.8%, Mn 0.8～0.9%, Cu 0.5～
0.6%, Cr 0.1～0.2%, S≤0.02%, P≤0.07%, surplus is Fe.The mechanical property of its foundry goods is tensile strength
>=590MPa, yield strength >=380MPa, elongation percentage >=8%；The manganese of this foundry goods, copper content are higher, cause based on elongation percentage
Mechanical performance index is on the low side.The Chinese patent of Patent No. CN102747268B discloses a kind of high intensity, the casting of high-ductility spheroidal graphite
Ferrum and manufacture method thereof, each component of this patent and percentage by weight thereof be: C 3.4～3.8%, Si 2.3～2.7%, Mn 0.3
～0.5%, Cu 0.3～0.5%, Cr 0.02～0.10%, S≤0.03%, P≤0.04%, Sb 0.001～0.005%,
Mg 0.03～0.06%, Re 0.001～0.003%, surplus is Fe；The matrix of its foundry goods is by the ferrum of certain proportion content
Ferritic and pearlite composition, have higher-strength and higher percentage elongation, can meet heavy-duty truck Drive axle housing, prop up
The use requirement of frame class foundry goods.The matrix of this foundry goods contains carbide and generates element Cr, simultaneously containing substantial amounts of pearly-lustre in matrix
Soma, therefore the elongation percentage of foundry goods is on the low side.
Therefore, how to provide one to have high performance, especially high-intensity high-tenacity, and be applicable to large-scale or super large
The spheroidal graphite cast-iron reel of heavy-duty hoisting equipment, churning driven and hoisting speed reducer is the skill that current those skilled in the art need solution badly
Art problem.
Utility model content
The purpose of this utility model is to provide the casting system of a kind of high performance spheroidal graphite cast-iron reel, and this casting system produces
The spheroidal graphite cast-iron reel gone out has higher combination property, the highest intensity and higher toughness, and can be applicable to
Large-scale or ultra-large type crane gear, churning driven and hoisting speed reducer.
For solving above-mentioned technical problem, the technical scheme that this utility model provides is:
A kind of casting system of high performance spheroidal graphite cast-iron reel, described reel include hollow tubular spool body, on
Block plate, lower block plate and be positioned at the chock hole portion inside spool body one end, including reel apperance, runner system apperance, shell,
Atactic copolymerized polypropene plastic hoop, the first casing that can be airtight, upper stalk, vaccum suction tube, back-up sand, can be airtight
Two casings, for containing the open containers of molten iron；
Described reel apperance includes apperance and lower apperance, and described upper apperance overlaps with the bonding Mosaic face of described lower apperance
Radial section in described spool body and the inferolateral surface through described chock hole portion；
Described upper apperance, lower apperance and the atactic copolymerized polypropene plastic material that runner system apperance is injection mo(u)lding；
Described shell is the shell of described upper apperance, and the lower annular end face of described shell is for making what molten iron flowed into open
Mouthful；
The upper annular end face of described lower apperance and the lower annular end face bonding connection of described atactic copolymerized polypropene plastic hoop,
And the upper annular end face of described atactic copolymerized polypropene plastic hoop inserts in the circular opening of described shell, and make described lower mold
The seamless splicing of lower annular end face of the upper annular end face of sample and described shell is to be spliced into described lower apperance with described shell
Integral piece is used for casting reel；
Described lower apperance and described runner system apperance are integral by bonding connection, and described runner system apperance is bonded in
On the bottom surface of described lower apperance, to obtain including the apperance integral piece of described lower apperance, shell and runner system apperance；
Described apperance integral piece is positioned in described first casing with vertical；
Described upper stalk passes and is fixed in the lower bottom of described first casing, the freedom of described runner system apperance
End lower surface is docked with the upper end open of described upper stalk, and the free end lower surface of described runner system apperance is completely covered by
The upper end open of described upper stalk, described upper stalk and the junction of bottom under described first casing are for being tightly connected；
Described vaccum suction tube passes and is fixed on the side box wall of described first casing, one end of described vaccum suction tube
Keep at a certain distance away with described apperance integral piece, the other end of described vaccum suction tube be exposed at described first casing outside and with
Vacuum system connects, and the junction of described vaccum suction tube and described first case-side tank wall is for being tightly connected；
Described back-up sand compresses enriches the remaining space in described first casing to obtain sand mold；
Described open containers is placed in a second airtight casing, and the lower end of described upper stalk is through described the
The top case lid of two casings immerses in the molten iron in described open containers, and described upper stalk with the junction of described second casing is
It is tightly connected；
Compressed gas entrance, described compressed gas entrance and compressed gas source of the gas it is provided with on the tank wall of described second casing
Connection.
Preferably, also include the periphery being arranged at described apperance integral piece by the way of described apperance integral piece from upper
To multiple cooling coils of lower laying, each described cooling coil has the most independent import and outlet, each described cooling
Coil pipe can regulate to control the process of setting of molten iron with the spacing size of described apperance integral piece outer wall.
Preferably, also include being arranged at the multiple cooler pans laid from top to bottom at the boring of described apperance integral piece
Pipe, each cooling coil has the most independent import and outlet, each described cooling coil and described apperance integral piece inwall
Spacing size can regulate to control the process of setting of molten iron.
This utility model provides the casting system of a kind of high performance spheroidal graphite cast-iron reel, with tradition sand casting system
Based on, and carrying out many places improvement on this basis, this utility model has a following useful technique effect:
1), in sand casting originally, reel apperance many employings wooden model, after making sand mold, wooden model to be taken out, in order to take out
Wooden model, needs to do some special designs, such as: sand mold at least two-layer is beneficial to later stage taking-up wooden model, and wooden model needs to make
Pattern draft to facilitate the later stage to take out wooden model, etc., after casting, also to machine the pattern draft removed on foundry goods, take
Time laborious, add production cost, reduce production efficiency, to this end, this utility model uses plastics apperance, due to plastics apperance
Touching the molten iron of high temperature when, it is easy to gasification, becomes gas and taken away by vacuum system, leave behind one and tie with reel
The sand mold die cavity that structure profile is similar, therefore, in this utility model, sand mold need not arrange die joint, whole sandbox be one complete
Sandbox, without arranging pattern draft, without arrange corresponding to core at the hollow cavity of spool body etc., by above-mentioned
Apperance integral piece be directly embedded in back-up sand the most permissible, time saving and energy saving, cost-effective, improve efficiency.
2) this utility model uses injection mo(u)lding, emphasizes to use non-foam moulding process, and the apperance obtained after molding is than bubble
Foam plastics have higher density and intensity, compaction force bigger during can bearing compacting back-up sand below, and are unlikely to
Make apperance, lower apperance and runner system apperance that deformation occur, and foam plastics is easily deformed under this compaction force.
3), in sand casting originally, need to place a core at the hollow cavity in chock hole portion and cast out this hollow cavity to water,
Owing to this hollow cavity wall thickness is bigger but hollow internal diameter is less so that the making of this core, location are laid very inconvenient, it is easy to just
This hollow cavity is cast unsuccessfully, even if using above-mentioned plastics apperance, being also required to place a core herein, still existing above-mentioned
Problem, to this end, this utility model is further, whole reel apperance is divided into two pieces at chock hole and is fabricated separately, under
Apperance is exactly above-mentioned being produced by injection molding forming method by atactic copolymerized polypropene plastics, and upper apperance is first random copolymerization to be gathered
Acrylic plastic is produced by injection molding forming method, and shell is produced on the whole surface in upper apperance the most again, and this shell is individual hollow
Shell, is stitched together lower apperance with this shell by above-mentioned atactic copolymerized polypropene plastic hoop, the when of casting, molten iron from
Under up fill type, first lower mold sample gas, subsequently in the hollow cavity in this shell, final solidification obtains reel, so sets
Put, core just need not be set again, just there is not above-mentioned problem.
4) in original sand casting, liquation fills type from top to bottom, and the gas in sand mold moves from the bottom up so that gas
It is melt hydraulic pressure, is difficult to the problem from sand mold effusion, cause volume gas serious in sand casting and pore problem, to this end, this
In utility model, it is placed in vertical for apperance integral piece in sand mold, and described runner system apperance is bonded in described lower apperance
On bottom surface so that molten iron is to fill type from the bottom up, and apperance integral piece is to gasify from the bottom up, the gas after gasification is also from lower past
Upper motion, the direction of three is consistent, thus avoids above-mentioned volume gas and pore problem.
5) sand casting now, foundry goods is all natural cooling, and the cast structure obtained after solidification is what is exactly
What, entirely without there being purpose control, be a kind of cooled and solidified entirely without control, the many existence of solidified structure obtained
The defects such as segregation, shrinkage cavity and porosity, cold shut, coarse grains, have had a strong impact on the mechanical property of foundry goods, to this end, this utility model,
Cooling coil is imbedded in advance, by controlling the spacing size control of multiple cooling coils and described reel apperance outer wall in sand mold
The process of setting of molten iron, by controlling the solidification of multiple cooling coils and the spacing size control molten iron of described reel apperance inwall
Process, and select suitably to be initially supplied the opportunity of cooling medium, and control multiple cooling coil is initially supplied cooling medium
Before and after order, and control corresponding cooling medium consumption and pressure in each cooling coil, with realization to spheroidal graphite cast-iron reel
Carry out forcing cooled and solidified, improve cooling and hasten, with inhibiting grain growth, obtain crystal grain thinning, by refined crystalline strengthening significantly
Improve the mechanical property such as intensity and toughness of foundry goods, and realize consecutive solidification from top to bottom, the top of foundry goods first cools down,
Solidifying the most gradually downward, then the bottom solidification of foundry goods, is finally casting system solidification, significantly reduces original sand casting
In shrinkage cavity and porosity and cold shut problem, improve casting quality.Owing in the first casing, sand mold has bigger breathability,
In gas after plastics gasification and cavity filling process, the extraneous air entered in the first airtight casing can flow in the first casing
Dynamic, as a kind of heat transfer medium, by the cooling medium that the heat filling sections water is passed in cooling coil that flows, it is achieved on
State the pressure cooling effect of cooling coil, improve the structure property of foundry goods.
6), in tradition sand casting, liquation is entirely the gravity by self and flows and fill type, it is easy to misrun, cold occur
Every problems such as, shrinkage cavity and porosities, to this end, this utility model, the pressure of compressed gas and the suction force of vacuum is used jointly to act on
Molten iron is filled whole sand mold die cavity, and before solidification completely, keeps blowing gas and evacuation so that molten iron is all the time with one
Pressure fills sand mold die cavity, and cools down therewith, significantly reduces the quality problems such as misrun, cold shut, shrinkage cavity and porosity.
Accompanying drawing explanation
The front view of the reel that Fig. 1 provides for this utility model embodiment；
Fig. 2 is the rearview of Fig. 1；
Fig. 3 is the centre section topology view of Fig. 1；
Fig. 4 is the A-A face cross section view in Fig. 3；
Fig. 5 is the B-B face cross section view in Fig. 3；
Fig. 6 is the lower apperance and the splicing line position view of upper apperance that in this utility model, reel apperance includes；
Fig. 7 is the cross-sectional view of upper apperance in this utility model；
Fig. 8 is the cross-sectional view of lower apperance in this utility model.
In figure: 1 reel, 101 spool body, block plate on 102,103 times block plates, 104 chock hole portions, apperance on 2,3 lower molds
Sample, 4 splicing lines.
Detailed description of the invention
In order to be further appreciated by this utility model, below in conjunction with embodiment, this utility model preferred embodiment is retouched
State, but it is to be understood that these describe and simply further illustrate feature of the present utility model and advantage rather than to this practicality newly
The restriction of type claim.
Now, spheroidal graphite cast-iron reel many employings sand mould casting method molding, but there are some problems more, to this end, this practicality
The novel casting system providing a kind of high performance spheroidal graphite cast-iron reel, described reel 1 includes the spool body of hollow tubular
101, upper block plate 102, lower block plate 103 and be positioned at the chock hole portion 104 inside spool body 101 one end, including reel apperance,
Runner system apperance, shell, atactic copolymerized polypropene plastic hoop, the first casing that can be airtight, upper stalk, vacuum draw
Pipe, back-up sand, can be airtight the second casing, for containing the open containers of molten iron；
Described reel apperance includes apperance 2 and lower apperance 3, described upper apperance 2 and the bonding Mosaic face of described lower apperance 3
Coincide with the radial section of described spool body 101 and pass the inferolateral surface in described chock hole portion 104；
Described upper apperance 2, lower apperance 3 and the atactic copolymerized polypropene plastics material that runner system apperance is injection mo(u)lding
Matter；
Described shell is the shell of described upper apperance 2, and the lower annular end face of described shell is for making molten iron flow into
Opening；
The upper annular end face of described lower apperance 3 connects with the lower annular end face bonding of described atactic copolymerized polypropene plastic hoop
Connect, and in the circular opening of the upper annular end face described shell of insertion of described atactic copolymerized polypropene plastic hoop, and make described
The upper annular end face of lower apperance 3 and the seamless splicing of lower annular end face of described shell are with by described lower apperance 3 and described shell
It is spliced into integral piece for casting reel；
Described lower apperance 3 and described runner system apperance are integral by bonding connection, and described runner system apperance bonds
On the bottom surface of described lower apperance 3, to obtain including the apperance integral piece of described lower apperance 3, shell and runner system apperance；
Described apperance integral piece is positioned in described first casing with vertical；
Described upper stalk passes and is fixed in the lower bottom of described first casing, the freedom of described runner system apperance
End lower surface is docked with the upper end open of described upper stalk, and the free end lower surface of described runner system apperance is completely covered by
The upper end open of described upper stalk, described upper stalk and the junction of bottom under described first casing are for being tightly connected；
Described vaccum suction tube passes and is fixed on the side box wall of described first casing, one end of described vaccum suction tube
Keep at a certain distance away with described apperance integral piece, the other end of described vaccum suction tube be exposed at described first casing outside and with
Vacuum system connects, and the junction of described vaccum suction tube and described first case-side tank wall is for being tightly connected；
Described back-up sand compresses enriches the remaining space in described first casing to obtain sand mold；
Described open containers is placed in a second airtight casing, and the lower end of described upper stalk is through described the
The top case lid of two casings immerses in the molten iron in described open containers, and described upper stalk with the junction of described second casing is
It is tightly connected；
Compressed gas entrance, described compressed gas entrance and compressed gas source of the gas it is provided with on the tank wall of described second casing
Connection.
In an embodiment of the present utility model, above-mentioned casting system also includes being arranged at outside described apperance integral piece
Enclosing the multiple cooling coils to lay from top to bottom in the way of described apperance integral piece, each described cooling coil has respectively
From independent import and outlet, each described cooling coil can regulate with the spacing size of described apperance integral piece outer wall with control
The process of setting of molten iron processed.
In an embodiment of the present utility model, above-mentioned casting system also includes being arranged at the interior of described apperance integral piece
Multiple cooling coils that portion's hollow position is laid from top to bottom, each cooling coil has the most independent import and outlet, each
Described cooling coil can regulate to control the process of setting of molten iron with the spacing size of described apperance integral piece inwall.
The method of operation of the casting system of the spheroidal graphite cast-iron reel that this utility model provides, comprises the following steps:
1) reel apperance is produced:
As shown in figure Fig. 1 Fig. 5, described reel 1 includes the spool body 101 of hollow tubular, upper block plate 102, lower block plate
103 and be positioned at the chock hole portion 104 inside spool body 101 one end；Chock hole portion 104 includes that a wall thickness is bigger but hollow
The hollow cavity that internal diameter is less；
Described reel apperance includes apperance 2 and lower apperance 3, described upper apperance 2 and the bonding connection face of described lower apperance 3
Coincide with the radial section of described spool body 101 and pass the inferolateral surface in described chock hole portion 104；As shown in Figure 6, in figure
Dotted line is the splicing line 4 of apperance 2 and the bonding of lower apperance 3；Above-mentioned lower apperance 3 and upper apperance 2 thing true with it
Contour structures is similar, simply exists and compensates the magnification ratio of shrinkage factor in casting solidification process, and there is not tradition sand casting
In pattern draft；
Atactic copolymerized polypropene plastics are produced described lower apperance 3 by injection molding forming method；
Atactic copolymerized polypropene plastics are produced described upper apperance 2 by injection molding forming method, then by described upper apperance 2
The surface impregnation coating in addition to lower annular end face, then stucco, then sinter, sintering during described on apperance
Mould is lost in 2 gasifications, obtains the shell of described upper apperance 2, and the lower annular end face of described shell is the opening for making molten iron flow into；
Atactic copolymerized polypropene plastics are produced runner system apperance by injection molding forming method；Preferably, runner system
Apperance is solid vertical column；
Take an atactic copolymerized polypropene plastic hoop, the upper annular end face of described lower apperance 3 is gathered with described random copolymerization
The lower annular end face bonding connection of Acrylic plastic ring, and the upper annular end face of atactic copolymerized polypropene plastic hoop is inserted described type
In the circular opening of shell, and make the upper annular end face of described lower apperance 3 and the seamless splicing of lower annular end face of described shell
Integrally it is used for casting reel described lower apperance 3 to be spliced into described shell；
Described lower apperance 3 is integral by bonding connection with described runner system apperance, and described runner system apperance is glued
Knot, on the bottom surface of described lower apperance 3, obtains including the apperance one of described lower apperance 3, shell and runner system apperance
Part；Preferably, by PUR bonding connection；
Above-mentioned atactic copolymerized polypropene plastics, for based on atactic copolymerized polypropene, add stabilizer, lubricant, plasticising
The plastics that agent etc. are made.The formula of above-mentioned atactic copolymerized polypropene plastics is not particularly limited by this utility model, uses this skill
Conventional formulation in art field；
This utility model uses injection mo(u)lding, emphasizes to use non-foam moulding process, and the apperance obtained after molding compares foam
Plastics have higher density and intensity, compaction force bigger during can bearing compacting back-up sand below, and are unlikely to make
Apperance 2, lower apperance 3 and runner system apperance must be gone up deformation occurs, and foam plastics is easily deformed under this compaction force；
Originally, in sand casting, reel apperance many employings wooden model, after making sand mold, wooden model to be taken out, in order to take out wood
Mould, needs to do some special designs, such as: sand mold at least two-layer is beneficial to later stage taking-up wooden model, and wooden model needs to make
Mould gradient to facilitate the later stage to take out wooden model, etc., after casting, also to machine the pattern draft removed on foundry goods, time-consuming
Arduously, add production cost, reduce production efficiency, to this end, this utility model uses plastics apperance, owing to plastics apperance exists
It is easy to gasification when of touching the molten iron of high temperature, becomes gas and taken away by vacuum system, leave behind one and reel structure
The sand mold die cavity that profile is similar, therefore, in this utility model, sand mold need not arrange die joint, whole sandbox be one complete
Sandbox, without arranging pattern draft, without arranging corresponding to core at the hollow cavity of spool body 101 etc., by upper
The apperance integral piece stated directly is embedded in back-up sand the most permissible, time saving and energy saving, cost-effective, improves efficiency；
Originally, in sand casting, need to place a core at the hollow cavity in chock hole portion 104 and cast out this hollow cavity to water,
Owing to this hollow cavity wall thickness is bigger but hollow internal diameter is less so that the making of this core, location are laid very inconvenient, it is easy to just
This hollow cavity is cast unsuccessfully, even if using above-mentioned plastics apperance, being also required to place a core herein, still existing above-mentioned
Problem, to this end, this utility model is further, whole reel apperance is divided into two pieces at chock hole and is fabricated separately, under
Apperance 3 is exactly above-mentioned being produced by injection molding forming method by atactic copolymerized polypropene plastics, and upper apperance 2 is first by random copolymerization
Polypropylene plastics is produced by injection molding forming method, and shell is produced on the whole surface in upper apperance 2 the most again, and this shell is a sky
Heart shell, is stitched together lower apperance 3 with this shell by above-mentioned atactic copolymerized polypropene plastic hoop, the when of casting, and ferrum
Water fills type from the bottom up, first lower apperance 3 is gasified, and subsequently in the hollow cavity in this shell, final solidification obtains reel, as
This is arranged, and just need not arrange core again, just there is not above-mentioned problem.Above-mentioned shell is prepared raw material by this utility model
And preparation method is not particularly limited, use the convenient source in this area and method；
2) take first casing, by step 1) in apperance integral piece be positioned in described first casing with vertical；
In original sand casting, liquation fills type from top to bottom, and the gas in sand mold moves from the bottom up so that gas quilt
Liquation is pushed down, and is difficult to the problem from sand mold effusion, causes volume gas serious in sand casting and pore problem, to this end, this reality
In novel, it is placed in vertical for apperance integral piece in sand mold, and described runner system apperance is bonded in the end of described lower apperance 3
On face so that molten iron is to fill type from the bottom up, and apperance integral piece is to gasify from the bottom up, and the gas after gasification is also from the bottom up
Motion, the direction of three is consistent, thus avoids above-mentioned volume gas and pore problem；
Then multiple to lay from top to bottom in the way of described apperance integral piece in the periphery of described apperance integral piece
Cooling coil, each cooling coil has the most independent import and outlet, by controlling multiple cooling coils and described apperance
The spacing size of integral piece outer wall controls the process of setting of molten iron；
Then at the boring of described apperance integral piece, lay multiple cooling coil, each cooling coil from top to bottom
There is the most independent import and outlet, by controlling the spacing size control of multiple cooling coils and described apperance integral piece inwall
The process of setting of molten iron processed；
Sand casting now, foundry goods is all natural cooling, the cast structure obtained after solidification be what be exactly assorted
Appearance, entirely without there being purpose control, is a kind of cooled and solidified entirely without control, and the many existence of solidified structure obtained are inclined
The defects such as analysis, shrinkage cavity and porosity, cold shut, coarse grains, have had a strong impact on the mechanical property of foundry goods, to this end, this utility model,
Sand mold is imbedded cooling coil in advance, by controlling the spacing size control of multiple cooling coils and described apperance integral piece outer wall
The process of setting of molten iron, controls the solidifying of molten iron by controlling multiple cooling coils with the spacing size of described apperance integral piece inwall
Gu process, and select suitably to be initially supplied the opportunity of cooling medium, and control multiple cooling coil is initially supplied cooling Jie
Order before and after matter, and control corresponding cooling medium consumption and pressure in each cooling coil, to realize spheroidal graphite cast-iron is rolled up
Cylinder carries out forcing cooled and solidified, improves cooling and hastens, with inhibiting grain growth, obtains crystal grain thinning, notable by refined crystalline strengthening
Improve the mechanical property such as intensity and toughness of foundry goods, and realize consecutive solidification from top to bottom, the top of foundry goods is the coldest
But, solidifying the most gradually downward, then the bottom solidification of foundry goods, is finally casting system solidification, significantly reduces original sand mold
Shrinkage cavity and porosity in casting and cold shut problem, improve casting quality；Owing in the first casing, sand mold has bigger breathing freely
Property, in gas after plastics gasification and cavity filling process, the extraneous air entered in the first airtight casing can be in the first casing
Flowing, as a kind of heat transfer medium, by the cooling medium passing in cooling coil by the heat filling sections water that flows, it is achieved
The pressure cooling effect of above-mentioned cooling coil, improves the structure property of foundry goods；
Then arranging stalk, described upper stalk passes and is fixed in the lower bottom of described first casing, described
The free end lower surface of runner system apperance is docked with the upper end open of described upper stalk, and described runner system apperance from
It is completely covered by the upper end open of described upper stalk by end lower surface, seals described upper stalk and bottom under described first casing
Junction；
Then arranging vaccum suction tube, described vaccum suction tube passes and is fixed on the side box wall of described first casing,
One end of described vaccum suction tube keeps at a certain distance away with described apperance integral piece, and the other end of described vaccum suction tube is exposed at institute
State the outside of the first casing and connect with vacuum system, sealing the connection of described vaccum suction tube and described first case-side tank wall
Place；
Then back-up sand in described first casing, is then compacted, obtains sand mold；In this sand mold and tradition sand casting process
Sand mold with sand kind, manufacture method etc. identical, it is not specifically limited to this for this utility model, uses of the prior art
?；
Then whole described first casing is sealed to coordinate above-mentioned vacuum system extracting vacuum；Vacuum herein means whole
Being all negative-pressure vacuum in individual first casing, owing to this utility model uses the sand mold in tradition sand casting, this sand mold has relatively
High breathability, so that above-mentioned plastics gas and the circulation of air originally, and eventually through vaccum suction tube by very
Do-nothing system is taken away；
3) smelting molten iron, then sequentially passes through molten iron spheroidising, an inoculation and late inoculation and processes,
To above-mentioned molten iron, then molten iron open containers is contained；
4) by step 3) in open containers be placed in a second airtight casing, and make described upper stalk
Lower end is immersed in the molten iron in described open containers through the top case lid of described second casing, seals described upper stalk and institute
State the junction of the second casing；
5) in described second casing, blow compressed gas, meanwhile, open vacuum system and produce vacuum, in open containers
Molten iron is under the effect of the pressure of compressed gas and the suction force of vacuum, along the die cavity rising liquid pipe and flowing into sand mold,
Molten iron fills type from the bottom up, first runner system apperance is gasified with lower apperance 3, subsequently in the hollow cavity in shell, until
Liquid level in open containers no longer declines and shows that molten iron fills whole sand mold die cavity, and the gas after gasification passes through vaccum suction tube quilt
Vacuum system is taken away, then keeps blowing gas and evacuation, until the molten steel solidification in sand mold die cavity；
In tradition sand casting, liquation is entirely the gravity by self and flows and fill type, it is easy to misrun, cold occur
Every problems such as, shrinkage cavity and porosities, to this end, this utility model, the pressure of compressed gas and the suction force of vacuum is used jointly to act on
Molten iron is filled whole sand mold die cavity, and before solidification completely, keeps blowing gas and evacuation so that molten iron is all the time with one
Pressure fills sand mold die cavity, and cools down therewith, significantly reduces the quality problems such as misrun, cold shut, shrinkage cavity and porosity；
After the liquid level in open containers no longer declines, in each cooling coil, supply cooling medium the most successively
Spheroidal graphite cast-iron reel is carried out cooled and solidified and realizes consecutive solidification from top to bottom, it is preferred that cooling medium is water；
6) after the import department of cooling coil of bottom is less than 3 DEG C with the temperature difference of the cooling medium in exit, stop blowing
Send compressed gas and evacuation, then described upper stalk is extracted out from described second casing, then take described first apart
Casing, then abolishes sand mold, knocks out described shell, obtains spheroidal graphite cast-iron reel；Then proceed to follow-up process, the hottest place
Reason；
When in traditional sand casting, unpack complete with personal experience, easily determine error, and this utility model with
The temperature difference of the import department of the cooling coil of bottom and the cooling medium in exit is as unpacking criterion, when this temperature difference is less than
After 3 DEG C, show that the temperature of the bottom of foundry goods is reduced to relatively low, can unpack, it is provided that be a kind of that grow out of nothing and the most directly perceived
Determination methods easily.
The explanation of above example is only intended to help to understand method of the present utility model and core concept thereof.Should refer to
Go out, for those skilled in the art, on the premise of without departing from this utility model principle, it is also possible to this
Utility model carries out some improvement and modification, and these improve and modification also falls into this utility model scope of the claims
In.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this practicality new
Type.Multiple amendment for these embodiments is apparent from for those skilled in the art, defined herein
General Principle can realize in other embodiments in the case of without departing from spirit or scope of the present utility model.Therefore,
This utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and new
The widest range that grain husk feature is consistent.
Claims (3)
1. a casting system for high performance spheroidal graphite cast-iron reel, described reel includes the spool body of hollow tubular, upper gear
Dish, lower block plate and be positioned at the chock hole portion inside spool body one end, it is characterised in that include reel apperance, runner system
Apperance, shell, atactic copolymerized polypropene plastic hoop, the first casing that can be airtight, upper stalk, vaccum suction tube, back-up sand, energy
Enough the second the most airtight casings, for containing the open containers of molten iron；
Described reel apperance includes that apperance and lower apperance, described upper apperance coincide with institute with the bonding Mosaic face of described lower apperance
State the radial section of spool body and pass the inferolateral surface in described chock hole portion；
Described upper apperance, lower apperance and the atactic copolymerized polypropene plastic material that runner system apperance is injection mo(u)lding；
Described shell is the shell of described upper apperance, and the lower annular end face of described shell is the opening for making molten iron flow into；
The upper annular end face of described lower apperance and the lower annular end face bonding connection of described atactic copolymerized polypropene plastic hoop, and institute
State in the circular opening of the upper annular end face described shell of insertion of atactic copolymerized polypropene plastic hoop, and make described lower apperance
The seamless splicing of lower annular end face of upper annular end face and described shell is to be spliced into one by described lower apperance and described shell
Part is used for casting reel；
Described lower apperance and described runner system apperance are integral by bonding connection, and described runner system apperance is bonded in described
On the bottom surface of lower apperance, to obtain including the apperance integral piece of described lower apperance, shell and runner system apperance；
Described apperance integral piece is positioned in described first casing with vertical；
Described upper stalk passes and is fixed in the lower bottom of described first casing, under the free end of described runner system apperance
End face docks with the upper end open of described upper stalk, and the free end lower surface of described runner system apperance is completely covered by described
The upper end open of upper stalk, described upper stalk and the junction of bottom under described first casing are for being tightly connected；
Described vaccum suction tube passes and is fixed on the side box wall of described first casing, one end of described vaccum suction tube and institute
Stating apperance integral piece to keep at a certain distance away, the other end of described vaccum suction tube is exposed at outside and and the vacuum of described first casing
System connectivity, the junction of described vaccum suction tube and described first case-side tank wall is for being tightly connected；
Described back-up sand compresses enriches the remaining space in described first casing to obtain sand mold；
Described open containers is placed in a second airtight casing, and the lower end of described upper stalk is through described second case
The top case lid of body immerses in the molten iron in described open containers, and described upper stalk is sealing with the junction of described second casing
Connect；
Being provided with compressed gas entrance on the tank wall of described second casing, described compressed gas entrance is with compressed gas source of the gas even
Logical.
Casting system the most according to claim 1, it is characterised in that also include the periphery being arranged at described apperance integral piece
By the multiple cooling coils laid from top to bottom in the way of described apperance integral piece, each described cooling coil has respectively
From independent import and outlet, each described cooling coil can regulate with the spacing size of described apperance integral piece outer wall with control
The process of setting of molten iron processed.
Casting system the most according to claim 1, it is characterised in that also include the inside being arranged at described apperance integral piece
Multiple cooling coils that hollow position is laid from top to bottom, each cooling coil has the most independent import and outlet, Mei Gesuo
The spacing size stating cooling coil and described apperance integral piece inwall can regulate to control the process of setting of molten iron.
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| CN201620488635.5U CN205834179U (en) | 2016-05-26 | 2016-05-26 | A kind of casting system of high performance spheroidal graphite cast-iron reel |
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| CN201620488635.5U CN205834179U (en) | 2016-05-26 | 2016-05-26 | A kind of casting system of high performance spheroidal graphite cast-iron reel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904483A (en) * | 2017-10-30 | 2018-04-13 | 山东汇丰铸造科技股份有限公司 | A kind of Al2O3Particle enhancing spheroidal graphite cast-iron reel and preparation method thereof |
| CN107904484A (en) * | 2017-10-30 | 2018-04-13 | 山东汇丰铸造科技股份有限公司 | A kind of situ Particles enhancing spheroidal graphite cast-iron reel and preparation method thereof |
| CN107974609A (en) * | 2017-10-30 | 2018-05-01 | 山东汇丰铸造科技股份有限公司 | A kind of situ Particles enhancing spheroidal graphite cast-iron and preparation method thereof |
| CN107974610A (en) * | 2017-10-30 | 2018-05-01 | 山东汇丰铸造科技股份有限公司 | A kind of Al2O3Particle enhancing spheroidal graphite cast-iron and preparation method thereof |
-
2016
- 2016-05-26 CN CN201620488635.5U patent/CN205834179U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904483A (en) * | 2017-10-30 | 2018-04-13 | 山东汇丰铸造科技股份有限公司 | A kind of Al2O3Particle enhancing spheroidal graphite cast-iron reel and preparation method thereof |
| CN107904484A (en) * | 2017-10-30 | 2018-04-13 | 山东汇丰铸造科技股份有限公司 | A kind of situ Particles enhancing spheroidal graphite cast-iron reel and preparation method thereof |
| CN107974609A (en) * | 2017-10-30 | 2018-05-01 | 山东汇丰铸造科技股份有限公司 | A kind of situ Particles enhancing spheroidal graphite cast-iron and preparation method thereof |
| CN107974610A (en) * | 2017-10-30 | 2018-05-01 | 山东汇丰铸造科技股份有限公司 | A kind of Al2O3Particle enhancing spheroidal graphite cast-iron and preparation method thereof |
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