CN108453218A - The mold and nut lost foam casting process of the foamed model of nut, the foamed model of system - Google Patents
The mold and nut lost foam casting process of the foamed model of nut, the foamed model of system Download PDFInfo
- Publication number
- CN108453218A CN108453218A CN201810460644.7A CN201810460644A CN108453218A CN 108453218 A CN108453218 A CN 108453218A CN 201810460644 A CN201810460644 A CN 201810460644A CN 108453218 A CN108453218 A CN 108453218A
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- China
- Prior art keywords
- nut
- gate
- foamed model
- foamed
- cavity
- 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.)
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- 238000010114 lost-foam casting Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 20
- 241000221696 Sclerotinia sclerotiorum Species 0.000 claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 claims abstract description 53
- 238000000465 moulding Methods 0.000 claims description 37
- 239000011324 bead Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 14
- 238000005187 foaming Methods 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000007607 die coating method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000003618 dip coating Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008034 disappearance Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 2
- 244000035744 Hura crepitans Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010113 evaporative-pattern casting Methods 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
-
- 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
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
-
- 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
- B22C9/22—Moulds for peculiarly-shaped castings
Abstract
The invention discloses a kind of foamed models of nut, including the foamed model unit body of multiple nuts and sprue gate, the foamed model unit body of nut includes the white mould of nut, main gate and is arranged the secondary gate in main gate both sides, sprue gate is connected to main gate, main gate is connected to secondary gate, and secondary gate is connect with the white mould of nut；The white mould of nut is equipped with integrally formed threaded hole.The invention also discloses a kind of molds for manufacturing the foamed model of nut, including upper die holder and lower die holder, the cavity for making the foamed model unit body of nut is equipped on upper die holder and lower die holder, which includes the nut cavity for making the white mould of nut, makes the main gate cavity of main gate and make the secondary gate cavity of pair gate.The invention also discloses a kind of lost foam casting process based on the foamed model manufacturing nut of nut, there is the advantage of abundant degree of freedom using disappearance module mold, and smallclothes nut bunchiness is moulded, improve product yield.
Description
Technical field
The invention belongs to Technology of EPC fields, and in particular to a kind of foamed mould for lost foam casting nut
Type, the mold and nut lost foam casting process for manufacturing the foamed model of the nut, the foamed model of the nut are to use evaporative pattern
Casting technique manufactures intermediate mold when nut, which connects for anchor bar steel.
Background technology
When usually manufacturing anchor bar steel nut, nut blank first is cast with clay-bonded sand, is then machined.Existing system
The mode of making causes such standard component processing cost high, and is easy casting flaw occur in machined surface.Another system at present
The mode for making nut is using hot investment casting disposal molding, and the nut produced in this way, internal whorl is easy out
Existing webs, finning, influence normal use.
Invention content
It, can hoisting nut internal threaded surface rugosity the purpose of the present invention is to provide a kind of simple in structure, easy to use
And dimensioning accuracy, the foamed model for lost foam casting nut of nut production efficiency is improved, the foamed model of the nut exists
It is used as intermediate mold when manufacturing nut using lost foam casting process.It is foamed for manufacturing nut that the present invention provides one kind
The mold of model, the mold can be such that the threaded hole of nut is integrally formed with nut, avoid again realizing nut thread mill drilling
Exempt to process in hole.The present invention also provides a kind of nut lost foam casting process using the foamed model manufacturing nut of above-mentioned nut.
To achieve the above object, the technical scheme is that：A kind of foamed model of nut, including the foamed mould of multiple nuts
Type cell cube and sprue gate, the foamed model unit body of nut include that the white mould of nut, main gate and setting are poured in the master
The secondary gate of road both sides is noted, the sprue gate is connected to the main gate, and the main gate connects with the secondary gate
Logical, the pair gate is connect with the white mould of the nut.
Further, the white mould of the nut is equipped with threaded hole, and the threaded hole is integrally formed with the white mould of the nut.
Further, the main gate is equipped with multiple secondary gates, and the secondary gate is symmetricly set on master and pours
The both sides in road are noted, the junction of the pair gate and the main gate forms reinforcement structure for arc-shaped transition.
Further, the foamed model of the nut includes the foamed model unit body of multiple nuts, and the nut is foamed
Model unit body is in upper and lower arranged, and the main gate of the two neighboring foamed model unit body of nut is mutually bonded connection, institute
Sprue gate is stated to be arranged in one end of the foamed model of the nut.
The invention further relates to a kind of molds of the above-mentioned foamed model of nut of manufacture, including upper die holder and lower die holder, described
The cavity for making the foamed model unit body of nut, the foamed mould of the making nut are equipped on upper die holder and the lower die holder
The cavity of type cell cube includes the nut cavity for making the white mould of nut, make the main gate cavity of the main gate and
The secondary gate cavity of the secondary gate is made, the main gate cavity is connected to the secondary gate cavity, the pair
Gate cavity is connected to the nut cavity；The mold further includes the stud that threaded hole is formed on the white mould of the nut.
Further, the stud is arranged in the centre position of the nut cavity, and one end of the stud is connected to branch
On frame, the holder is connected on upper die holder, and the other end of the stud is free end and passes through the nut cavity.
Further, the mold is equipped with multiple secondary gate cavities, and the pair gate cavity is symmetricly set on
The both sides of the main gate cavity, each pair gate cavity are connected to a nut cavity.
The invention further relates to a kind of lost foam casting process using the foamed model manufacturing nut of above-mentioned nut, technique steps
Suddenly include the white mould molds of a., the prefoam of b.EPS beads, c. moldings molding, the white moulds of d. are dried, the white modules of e. are filled and bonded, f. is white
Die coating material, g. vannings moulding, h. cast, l. cooling polishings, the white mould mold concrete operations of step a. are：Described in selection manufacture
The white mould mold at sprue gate selects the foamed model unit body of nut described in the Mold Making of the manufacture foamed model of nut；Institute
It includes making the sprue gate and the foamed model unit body of the nut to state step c. moldings molding；The white module dresses of step e.
And it is bonded as carrying out multiple foamed model unit bodies of nut and the sprue gate to form the nut bubble after assembling bonds
Moulding model.
Further, the white modules of the step e. fill and the concrete operations of bonding are：The foamed model of nut includes more
The foamed model unit body of multiple nuts is in first upper and lower arranged by a foamed model unit body of the nut, then by adjacent two
The main gate of the foamed model unit body of nut is mutually bonded connection, then sprue gate is bonded in the spiral shell being bonded to each other
One end of female foamed model unit body forms the foamed model of the nut.
Further, the step b.EPS beads prefoam concrete operations are：It will first with intermittent pre-foaming machine
EPS beads carry out prefoam, then are put into bead and are stored and cured with feed bin, are then sent to full-automatic molding by pipeline
Machine carries out step c. moldings molding；The step c. moldings are molded concrete operations：First with compressed air by the step b.EPS
It has foamed in bead prefoam and bead after curing is sent into the cavity for the white mould mold for manufacturing the sprue gate and the system
It makes and carries out second time of foaming in the cavity of the mold of the foamed model of nut, the foamed model unit body of the nut and institute are obtained after cooling
The EPS modules at sprue gate are stated, module warehouse is sent into after then toasting EPS modules and carries out timeliness, is entered after white mould timeliness described
The white module dresses of step e. and bonding；The white die coating material of step f. are to be soaked on the surface of the foamed model of the nut of assembled formation
It applies fireproof coating and dries, finally carry out the step g. vannings moulding, step h. cast and step l. cooling polishings.
The advantages of using technical solution of the present invention for：
1. the foamed model of nut of the present invention, which includes multilayer, to be arranged above and below the white mould of nut of arrangement, each layer sets that there are two nuts
Bai Mo, that is, two pieces nut can be made simultaneously by carrying out an each layer of charge, and entire foamed model can produce multiple nuts, carry
The high production efficiency of nut；In addition the white mould of multilayer nut is arranged in the foamed model of the nut, and the white mould of nut is at upper between layers
Lower arranged forms an entirety, whole dip-coating, bunchiness moulding is facilitated to pour in lost foam casting in the both sides of main gate
Note, not only ensure that the accuracy of manufacture but also had improved the production efficiency of smallclothes.
2. using the nut that goes out of the foamed model casting of nut of the present invention from threaded hole, and without being carried out to threaded hole
Processing can meet requirement again, ensure that the position of threaded hole, geomery be accurate and surface accuracy, change tradition
Nut manufacture need the mode of production of thread mill drilling again, realize that hole exempts to process, it is cost-effective not only to save manufacturing process,
Also improve nut interior thread surface rugosity and dimensioning accuracy.
3. the foamed model of nut of the present invention uses EPS and particular manufacturing craft integrated foam molding, nut inner thread ensure that
Accurate size and internal thread surface accuracy；In addition, the foamed model of nut based on the present invention utilizes lost foam casting process
The nut of manufacture, shape is complete, molding is good；The present invention casts nut using lost foam process, has using disappearance module mold
The advantage of sufficient degree of freedom, smallclothes nut bunchiness is moulded, improve product yield.
4. the non-perpendicular connection between pair gate of the invention and main gate, space, whole whole is not only rationally utilized
Clean beauty, and also add the intensity of secondary gate and main gate junction.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments：
Fig. 1 is the overall structure diagram of the foamed model of nut of the present invention.
Fig. 2 is the overall structure diagram of the mold of the present invention manufacture foamed model of nut.
Fig. 3 is the front view of the mold of the present invention manufacture foamed model of nut.
Fig. 4 is the schematic diagram that the foamed model unit body of nut is produced on mold.
Label in above-mentioned figure is respectively：1, sprue gate；2, the foamed model unit body of nut；21, the white mould of nut；22, main
Gate；23, secondary gate；31, nut cavity；32, main gate cavity；33, secondary gate cavity；4, stud；5, holder.
Specific implementation mode
In the present invention, it is to be understood that term " length ", " width ", "upper", "lower", "front", "rear", " left side ",
" right side ", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction "
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of the description present invention and
Simplify description, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration
And operation, therefore be not considered as limiting the invention.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the foamed model of a kind of nut, including foamed 2 He of model unit body of multiple nuts
Sprue gate 1, the foamed model unit body 2 of nut include the white mould 21 of nut, main gate 22 and are arranged in 22 both sides of main gate
Secondary gate 23, sprue gate 21 are connected to main gate 22, and main gate 22 is connected to secondary gate 23, secondary gate 23 and spiral shell
One end of the connections of female Bai Mo 21, i.e. pair gate 23 is connected on main gate 22, the other end attaching nut of secondary gate 23
White mould 21.The foamed model of the nut includes the foamed model unit body 2 of multiple nuts, and the foamed model unit body 2 of nut is in row up and down
The main gate 22 of row arrangement, the foamed model unit body of two neighboring nut 2 is mutually bonded connection, and the setting of sprue gate 1 is in nut
One end of foamed model；Constitute the foamed model of nut the foamed model unit body of multiple nuts 2 bond together after, share one
A sprue gate 1, will be on the main gate 22 of the bonding of sprue gate 1 at one end.
When manufacturing nut using lost foam casting process, molten iron is injected by sprue gate 1, is entered by main gate 22 each
A pair gate 23, molten iron are flowed to through secondary gate 23 at the white mould of nut 21.As the foamed model of the injection nut of molten iron gasifies,
Liquid metal occupies the position of the foamed model of nut, and casting is formed after solidification is cooling.The foamed model of the nut includes multiple nuts
Foamed model unit body 2, each foamed model unit body 2 of nut include the white mould 21 of multiple nuts, i.e. once-cast can be processed more
A white mould 21 of nut, improves production efficiency.
The above-mentioned white mould 21 of nut is equipped with threaded hole, and threaded hole is integrally formed with the white mould 21 of nut.Specifically in manufacture spiral shell
The stud 4 for making threaded hole is equipped in the mold of female Bai Mo 21, in mould 21 white using the mold manufacturing nut, in the white mould of nut
Threaded hole is formed while 21 molding, in this way when carrying out lost foam casting using the white mould 21 of the nut for being threaded hole, casting
The nut gone out can meet requirement from threaded hole, and without carrying out processing again to threaded hole, ensure that threaded hole
Position, geomery is accurate and surface accuracy, realizes that hole exempts to process, it is cost-effective not only to save manufacturing process, also improves
Nut interior thread surface rugosity and dimensioning accuracy.
The above-mentioned foamed model unit body 2 of nut includes a main gate 22, and a main gate 22 is equipped with multiple pairs
Gate 23, secondary gate 23 are symmetricly set on the both sides of main gate 22, i.e. every side of main gate 22 is designed with multiple
Secondary gate 23, the foamed model of nut are made of the foamed model unit body of multiple nuts 2.Come from the entirety of the foamed model of nut
It sees, is arranged above and below the white mould 21 of nut of arrangement it is also contemplated that the foamed model of the nut includes multilayer, each layer sets that there are two nuts
White mould 21, and the white mould of each layer of two nuts 21 is arranged symmetrically, that is, two pieces can be made simultaneously by carrying out an each layer of charge
Nut.Since the white mould 21 of multilayer nut is arranged in the foamed model of the nut, the white mould 21 of nut is in upper and lower arranged between layers
In the both sides of main gate 22, an entirety is formed, facilitates whole dip-coating, bunchiness moulding cast in lost foam casting, both protected
The production efficiency that the accuracy of manufacture improves smallclothes again is demonstrate,proved.
In order to rationally utilize space and increase the intensity of secondary gate 23 and 22 junction of main gate, secondary gate 23 and
Main gate 22 is non-perpendicular connection, i.e., two angles formed between secondary gate 23 and main gate 22, one is acute angle
One is obtuse angle, but in order to clean and tidy and easy to use, it shall be guaranteed that all pair 23 relatively main gates 22 of gate are inclined
Direction is consistent, is to tilt upward or diagonally downward, at least should be guaranteed that two masters relatively of secondary gate 23 in same layer pour
It is consistent to note 22 inclined direction of road.In the preferred embodiment of the present invention, the junction of secondary gate 23 and main gate 22 is circle
On the one hand arc-shaped transition forms reinforcement structure, play the role of the foamed mold strength of stiffnut, on the other hand arc-shaped transition
The phenomenon that facilitating the smooth circulation of molten iron, wedge angle transition avoided to be easily damaged.
One main gate 22 is equipped with multiple secondary gates 23, and a white mould of nut is connected on each pair gate 23
21, the number of the white mould of nut 1 is identical as the number of secondary gate 23 in the foamed model of entire nut.In the preferred side of the present invention
In case, the foamed model unit body 2 of a nut includes a main gate 22 and four pairs being arranged in 22 both sides of main gate
Gate 23, the white mould of four nuts of connection 21；That is 21 groups of the secondary gate 23 of a main gate 22, four and the white mould of four nuts
At a junior unit of the foamed model of nut, the foamed model unit body of multiple nuts 2 is bonded in one according to actual production demand
It rises, specially the main gate 22 of the foamed model unit body of each nut 2, which is docked and connected, bonds together, and shares a cast
Mouth 1 forms the foamed model of nut and is used for lost foam casting nut.Certain foamed model of nut is not limited only to this form, uses
Person can convert the bonding way of the foamed model of nut according to actual production, as long as foamed but be applied to composition nut
The foamed model unit body of the nut of model 2 all should be within protection scope of the present invention.
As shown in Figure 2, Figure 3, Figure 4, a kind of mold for manufacturing the foamed model of above-mentioned nut, exactly, the manufacture
For manufacturing the foamed model unit body 2 of nut, the foamed model unit body of multiple nuts 2 is bonded in the mold of the foamed model of the nut
The foamed model of nut is formed together.The mold of the foamed model of manufacture nut includes upper die holder and lower die holder, is steeped with above-mentioned nut
Moulding model cell cube 2 corresponds to, and the cavity for making the foamed model unit body of nut 2 is equipped on upper die holder and lower die holder, makes
The master that the cavity of the foamed model unit body of nut 2 includes the nut cavity 31 for making the white mould of nut 21, makes main gate 22 pours
It notes road cavity 32 and makes the secondary gate cavity 33 of secondary gate 23, main gate cavity 32 connects with secondary gate cavity 33
Logical, secondary gate cavity 33 is connected to nut cavity 31, i.e. one end of pair gate cavity 33 is connected to main gate cavity 32
On, the other end of secondary gate cavity 33 is connect with nut cavity 31.The mold is equipped with multiple secondary gate cavities 33, pair cast
Road cavity 33 is symmetricly set on the both sides of main gate cavity 32, and each pair gate cavity 33 is connected to a nut cavity 31.
The mold further includes the stud 4 of the formation threaded hole on the white mould 21 of nut, and stud 4 is arranged in nut cavity 31
Between position, i.e., in the threaded hole that is centrally formed of the white mould of nut 21, the length of stud 4 is according to the length of the white mould of nut 21 and required
Threaded hole depth determine.In lost foam casting, the EPS beads that foaming is completed are filled in the mold, are formed after cooling
The foamed model unit body of multiple nuts 2 (is bonded together into spiral shell by the foamed model unit body of nut 2 according to actual production demand
Female foamed model), the foamed model unit body 2 of nut formed after cooling down at this time, the white mould of stud 4 and nut 21 is structure as a whole,
By rotating stud 4, the white mould of stud 4 and nut 21 is made to separate, i.e., unloaded stud 4 from the white mould of nut 1, the spiral shell formed in this way
Female Bai Mo 21 comes with threaded hole, so the nut cast out using the white mould of the nut 21 is from threaded hole, nut and threaded hole
It is integrally formed, can meet requirement without carrying out processing again to threaded hole, avoid the position processed again to threaded hole
Set, geomery is accurate and surface accuracy causes inevitable error, improves the overall precision and quality of nut, realize hole
Exempt to process.
In model foamed using the mold manufacturing nut, the position to ensure stud 4 is accurate, ensures the threaded hole to be formed
Location consistency is good, and one end of stud 4 is connected on holder 5, and holder 5 is connected on upper die holder, between stud 4 and holder 5
To be detachably connected, such as it is threadedly coupled, snaps connection；The other end of stud 4 is free end and passes through nut cavity 31, stud
The design of 4 free ends and be provided to after the foamed model forming of nut for the design that is detachably connected between holder 5 it is convenient
Stud 4 is screwed out from the white mould of nut 21.
The technological process for being manufactured nut using lost foam casting process based on the foamed model of above-mentioned nut is included the following steps：
A. white mould mold, the prefoam of b.EPS beads, c. moldings molding, the drying of d. white moulds, the white module dresses of e. and bonding, the white die coating material of f.,
G. vanning moulding, h. cast, l. cooling polishings；Wherein, the white mould mold concrete operations of step a. are：Selection manufacture sprue gate 1
White mould mold, the foamed model unit body of the Mold Making nut of the selection manufacture foamed model of nut 2；Step c. moldings are molded
Make sprue gate 1 and the foamed model unit body of nut 2；The white modules of step e. are filled and are bonded as the foamed model unit of multiple nuts
Body 2 and sprue gate 1 carry out forming the foamed model of nut after assembling bonds, to provide intermediate mold for follow-up lost foam casting.
The white mould molds of step a.：It is poured according to the design feature of the foamed model of the nut to be made and lost foam casting process
Injection forming requirement, the white mould mold at selection manufacture sprue gate 1, selects the Mold Making of the above-mentioned foamed model of manufacture nut to form spiral shell
The cell cube 2 of female foamed model；It is equipped on the mold of the manufacture foamed model of nut for forming screw thread on the white mould of nut 21
The stud 4 in hole, stud 4 are arranged in the centre position of nut cavity 31, and one end of stud 4 is connected on holder 5, and holder 5 connects
It is to be detachably connected, such as be threadedly coupled, snap connection on upper die holder, between stud 4 and holder 5；The other end of stud 4 is
Free end and pass through nut cavity 31, the design of 4 free end of stud and between holder 5 for the design that is detachably connected all be for
Stud 4 is facilitated after the foamed model forming of nut to be screwed out from the white mould of nut 21.
Step b.EPS bead prefoam：EPS beads are subjected to prefoam first with intermittent pre-foaming machine, then are put into
Bead is stored and is cured with feed bin, and being then sent to fully automatic forming machine by pipeline carries out step c. moldings molding.Its
In, EPS material bead storage temperatures have to be lower than 25 DEG C, and cylinder steam pressure is 0.015-0.06Mpa, foams when EPS foams
Temperature is 90-110 DEG C, and prefoam density domination is within 14-19g/L.
Step c. moldings are molded：It will first have been foamed in b.EPS bead prefoam with compressed air and bead after curing sent
Enter to manufacture in the cavity of the white mould mold at sprue gate 1 and carry out second time of foaming in the cavity of the mold of the manufacture foamed model of nut,
The EPS modules of nut foamed model unit body 2 and sprue gate 1 are obtained after cooling, then by the foamed model unit body of nut 2 and are poured
It is sent into module warehouse after the EPS modules baking of geat 1 and carries out timeliness, finally to obtain density stabilized, any surface finish, accurate size
The foamed model unit body 2EPS modules of nut and sprue gate 1EPS modules；The white module dresses of e. are entered step after white mould timeliness and are glued
Knot.It is preferred that compressed air pressure is >=0.4Mpa.
The white module dresses of step e. and bonding：The foamed model of nut includes the foamed model unit body 2 of multiple nuts, first will be multiple
The foamed model unit body 2 of nut is in upper and lower arranged, then by 22 phase of main gate of the foamed model unit body of adjacent two nut 2
Mutually bonding connection, then one end that sprue gate 1 is bonded in the foamed model unit body of the nut being bonded to each other 2 form spiral shell
Female foamed model, intermediate mold is provided for follow-up lost foam casting, realizes the efficient of nut, high quality, low cost production.
The white die coating material of step f.：The foamed model of the nut of assembled formation surface dip-coating fireproof coating and dry, so as to
One layer of refractory matter coating with some strength and gas permeability is established in the foamed model surface of nut, the enhancing foamed model of nut
Intensity.
Step g. vanning moulding：Dip-coating fireproof coating and dry after the foamed model of nut, first pass through stretched wire be transported into
It after case station, then is put into the sandbox for having added bed load by manipulator, then passes through raining-type sand filling and jolt moulding.
Step h. cast and l. cooling polishings：Sandbox enters cast station after jolt moulding, turn on automatically vacuum system,
Poured into a mould by pouring truck, molten iron the foamed model of nut is gasified and occupy the foamed model of nut spatial position, complete
Vacuum-assist pouring process.Enter step l. cooling polishings：Go out manufacture parts after solidification is cooling, is transferred to the postprocessing working procedures such as ball blast polishing
Carry out subsequent processing.
The present invention is exemplarily described above in association with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as use technical solution of the present invention progress various unsubstantialities improvement, or it is not improved by the present invention
Design and technical solution directly apply to other occasions, within protection scope of the present invention.
Claims (10)
1. a kind of foamed model of nut, it is characterised in that：Including the foamed model unit body (2) of multiple nuts and sprue gate (1), institute
The foamed model unit body (2) of nut is stated to include the white mould of nut (21), main gate (22) and be arranged in the main gate (22)
The secondary gate (23) of both sides, the sprue gate (21) are connected to the main gate (22), the main gate (22) and institute
Secondary gate (23) connection is stated, the pair gate (23) connect with the white mould of the nut (21).
2. a kind of foamed model of nut as described in claim 1, it is characterised in that：The white mould of nut (21) is equipped with screw thread
Hole, the threaded hole are integrally formed with the white mould of the nut (21).
3. a kind of foamed model of nut as described in claim 1, it is characterised in that：The main gate (22) is equipped with multiple
Secondary gate (23), and the secondary gate (23) is symmetricly set on the both sides of main gate (22), the pair gate (23)
Junction with the main gate (22) is that arc-shaped transition forms reinforcement structure.
4. the foamed model of a kind of nut as described in claims 1 to 3 any one, it is characterised in that：The foamed mould of nut
Type includes the foamed model unit body (2) of multiple nuts, and the foamed model unit body (2) of nut is in upper and lower arranged,
The main gate (22) of the two neighboring foamed model unit body (2) of nut is mutually bonded connection, and the sprue gate (1) is arranged in institute
State one end of the foamed model of nut.
5. a kind of mold of nut foamed model of manufacture as described in Claims 1-4 any one, including upper die holder and lower die
Seat, it is characterised in that：The type for making the foamed model unit body of the nut 2 is equipped on the upper die holder and the lower die holder
Chamber, the cavity for making the foamed model unit body of nut 2 include the nut cavity (31) for making the white mould of nut (21), system
Make the main gate cavity (32) of the main gate (22) and make the secondary gate cavity (33) of the secondary gate (23),
The main gate cavity (32) is connected to the secondary gate cavity (33), the pair gate cavity (33) and the nut
Cavity (31) is connected to；The mold further includes the stud (4) that threaded hole is formed on the white mould of the nut (21).
6. a kind of mold of manufacture foamed model of nut as claimed in claim 5, it is characterised in that：Stud (4) setting
It is connected on holder (5) in the one end in the centre position of the nut cavity (31), the stud (4), holder (5) connection
On upper die holder, the other end of the stud (4) is free end and passes through the nut cavity (31).
7. a kind of mold of manufacture foamed model of nut as claimed in claim 5, it is characterised in that：The mold is equipped with multiple
The pair gate cavity (33), the pair gate cavity (33) are symmetricly set on the two of the main gate cavity (32)
Side, each pair gate cavity (33) are connected to a nut cavity (31).
8. a kind of lost foam casting work using the foamed model manufacturing nut of nut as described in claim 1 to 7 any one
Skill, the processing step include the white mould molds of a., the prefoam of b.EPS beads, c. moldings molding, the white mould drying of d., the white module dresses of e.
And bonding, the white die coating material of f., g. vanning moulding, h. cast, l. cooling polishings, it is characterised in that：The white mould molds of step a.
Concrete operations are：Selection manufactures the white mould mold of the sprue gate (1), selects the Mold Making of the manufacture foamed model of nut
The foamed model unit body (2) of nut；The step c. moldings molding includes making the sprue gate (1) and nut bubble
Moulding model cell cube (2)；It the white module dress of the step e. and is bonded as the foamed model unit body (2) of multiple nuts and institute
Sprue gate (1) is stated to carry out forming the foamed model of the nut after assembling bonds.
9. a kind of nut lost foam casting process as claimed in claim 8, it is characterised in that：The white module dress of the step e. and
Cohesive concrete operations are：The foamed model of nut includes the foamed model unit body (2) of multiple nuts, first by multiple spiral shells
Female foamed model unit body (2) is in upper and lower arranged, then by the main gate of the foamed model unit body (2) of adjacent two nut
(22) it is mutually bonded connection, sprue gate (1) is then bonded in the foamed model unit body (2) of nut being bonded to each other
One end forms the foamed model of the nut.
10. a kind of nut lost foam casting process as claimed in claim 9, it is characterised in that：The step b.EPS beads are pre-
Foaming concrete operations be：EPS beads are subjected to prefoam first with intermittent pre-foaming machine, then is put into bead and is deposited with feed bin
It stores up and is cured, being then sent to fully automatic forming machine by pipeline carries out step c. moldings molding；The step c. moldings at
Type concrete operations are：It will first have been foamed in the step b.EPS bead prefoam with compressed air and bead after curing be sent into
It manufactures in the cavity of the white mould mold at the sprue gate (1) and carries out two in the cavity of the mold of the manufacture foamed model of nut
Secondary foaming obtains the EPS modules of the nut foamed model unit body (2) and the sprue gate (1), then by EPS after cooling
It is sent into module warehouse after module baking and carries out timeliness, the white module dresses of the step e. are entered after white mould timeliness and bonds；The step
The white die coating material of rapid f. are the surface dip-coating fireproof coating in the foamed model of the nut of assembled formation and dry, and finally carry out institute
State step g. vannings moulding, step h. cast and step l. cooling polishings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460644.7A CN108453218B (en) | 2018-05-15 | 2018-05-15 | Nut foam molding model, mold for manufacturing foam molding model and nut lost foam casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460644.7A CN108453218B (en) | 2018-05-15 | 2018-05-15 | Nut foam molding model, mold for manufacturing foam molding model and nut lost foam casting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108453218A true CN108453218A (en) | 2018-08-28 |
| CN108453218B CN108453218B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810460644.7A Active CN108453218B (en) | 2018-05-15 | 2018-05-15 | Nut foam molding model, mold for manufacturing foam molding model and nut lost foam casting process |
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| CN (1) | CN108453218B (en) |
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| CN110252949A (en) * | 2019-07-11 | 2019-09-20 | 蓬莱万寿机械有限公司 | A kind of lost-foam casting method |
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| Publication number | Publication date |
|---|---|
| CN108453218B (en) | 2024-04-30 |
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