CN208341636U - A kind of hollow evaporative pattern - Google Patents
A kind of hollow evaporative pattern Download PDFInfo
- Publication number
- CN208341636U CN208341636U CN201820784620.2U CN201820784620U CN208341636U CN 208341636 U CN208341636 U CN 208341636U CN 201820784620 U CN201820784620 U CN 201820784620U CN 208341636 U CN208341636 U CN 208341636U
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- Prior art keywords
- hollow
- evaporative pattern
- cuboid
- cylindrical body
- model
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- 238000009826 distribution Methods 0.000 description 4
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- 235000012211 aluminium silicate Nutrition 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 3
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- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
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- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 description 1
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- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The utility model provides a kind of hollow evaporative pattern.Hollow structure of the utility model in mould inside setting specific shape and layout, reduce the usage amount and gas permeability of foamed material, under the premise of not influencing its use, obtained cast(ing) surface carburetting is remarkably reduced, the mechanical performance and surface property for improving casting, improve casting yield.By embodiment result it is found that compared with solid evaporative pattern, it is substantially reduced with the heart carburization amount of the casting of hollow evaporative pattern preparation provided by the utility model and surface layer carbon increasing amount.
Description
Technical field
The utility model relates to Metallic Casting Die & Mold technical field more particularly to a kind of hollow evaporative patterns.
Background technique
Lost foam casting be foam mould use bindless dry sand combination vacuum pumping technology cavityless casting, be by with
The similar bubbles model bonding of casting dimension shape is combined into model cluster, after brushing fireproof coating and drying, is embedded in drystone sand
Middle vibration molding, is poured under negative pressure, and model is made to gasify, and liquid metals occupies modal position, forms casting after solidification is cooling
Novel casting method.
Expanded polystyrene (EPS) production model is generallyd use in the prior art, is then directly embedded to vibration ramming in dry sand and is taken out
Negative pressure forms EPS solid mold.When the pour steel into this solid mold, polystyrene pyrolytic gasification, molten steel is full of poly-
Space occupied by styrene forms casting identical with model after cooling.However, the free carbon generated after polystyrene pyrolysis
Richness product forms carbon distribution on cast-internal or cast(ing) surface, and finished surface is caused to be scrapped because of carbon distribution defect.
Utility model content
The purpose of this utility model is to provide the hollow evaporative patterns that one kind can significantly reduce carbon deposition quantity.
In order to realize above-mentioned purpose of utility model, the utility model the following technical schemes are provided:
The utility model provides a kind of hollow evaporative pattern, and for the foamed material mould of flame-retardant coating layer package, feature exists
In side mode, side form and the intermediate die being sequentially arranged from outside to inside comprising contact, the side mode and side form connecting portion are provided with one
Hollow to cylindrical body, it is hollow that the side form and intermediate die connecting portion are provided with a pair of of cuboid；
The cylindrical body is hollow and cuboid is hollow symmetrical respectively about the same plane of symmetry, the axis of the hollow evaporative pattern
On the plane of symmetry；
The axis of the hollow axis of the cylindrical body and hollow evaporative pattern is vertical；
The hollow minimum perpendicular distance with the plane of symmetry of the cylindrical body is greater than the hollow maximum perpendicular with the plane of symmetry of cuboid
Distance；
The symmetrical cuboid hollow edge line is without coincidence, and adjacent cylindrical body is hollow and cuboid hollow edge
Line is without coincidence.
Preferably, the cylindrical body is hollow and the hollow minimum thickness between hollow evaporative pattern outer surface of cuboid is independent
Ground >=10mm；
The cylindrical body is hollow and cuboid it is hollow between minimum thickness >=10mm；
Minimum thickness >=20mm between the symmetrical cuboid is hollow.
Preferably, the corner of the hollow evaporative pattern exterior surface dimension variation is provided with multiple gas vents, the exhaust
Hole is cylindrical, diameter≤1mm, linear distance >=20mm between two neighboring gas vent.
Preferably, the foamed material is polymethyl methacrylate, polyurethane, polyolefin, phenolic resin and asphalt mixtures modified by epoxy resin
One or more of rouge.
Preferably, the flame-retardant coating layer with a thickness of 2~4mm.
Preferably, the group of the flame-retardant coating layer becomes zirconium English powder, white alundum powder, brown alundum powder, forsterite powder, magnesia
One or more of powder, sintered bauxite, ripe kaolin, silica flour, crystalline flake graphite, amorphous graphite, talcum powder and whiting.
Preferably, the mode of the contact setting is joggle, is bonded or ties up.
The utility model provides a kind of hollow evaporative pattern, is the foamed material mould of flame-retardant coating layer package, from outside to inside
It is empty that side mode, side form and intermediate die sequentially comprising contact setting, the side mode and side form connecting portion are provided with a pair of of cylindrical body
It is hollow that the heart, the side form and intermediate die connecting portion are provided with a pair of of cuboid；The cylindrical body is hollow and hollow point of cuboid
Not symmetrical about the same plane of symmetry, the axis of the hollow evaporative pattern is on the plane of symmetry；The cylindrical body hollow axis and sky
The axis of heart evaporative pattern is vertical；The hollow minimum perpendicular distance with the plane of symmetry of the cylindrical body is greater than that cuboid is hollow and the plane of symmetry
Maximum normal distance；The symmetrical cuboid hollow edge line is without coincidence, and adjacent cylindrical body is hollow and cuboid
Hollow edge line is without coincidence.The utility model reduces foaming in the hollow structure of mould inside setting specific shape and layout
The usage amount and gas permeability of material, under the premise of not influencing its use, obtained cast(ing) surface carburetting is remarkably reduced,
The mechanical performance and surface property for improving casting, improve casting yield.By embodiment result it is found that with solid evaporative pattern
It compares, is obviously dropped with the heart carburization amount of the casting of hollow evaporative pattern preparation provided by the utility model and surface layer carbon increasing amount
It is low.
Detailed description of the invention
Fig. 1 is the partial sectional view of the hollow evaporative pattern construction distribution of the utility model；
Fig. 2 is the top view of the hollow evaporative pattern construction distribution of the utility model；
Fig. 3 is the partial sectional view of the hollow evaporative pattern thickness limit of the utility model；
Fig. 4 is the top view of the hollow evaporative pattern thickness limit of the utility model；
Fig. 5 is the enlarged drawing of gas vent；
Fig. 6 is the partial sectional view of the solid evaporative pattern of comparative example；
Fig. 7 is the top view of the solid evaporative pattern of comparative example；
In figure: 1- side mode, 2- side form, 3- intermediate die, 4- cylindrical body is hollow, and 5- cuboid is hollow, 6- gas vent.
Specific embodiment
The utility model provides a kind of hollow evaporative pattern, is the foamed material mould of flame-retardant coating layer package, from outside to inside
It is empty that side mode, side form and intermediate die sequentially comprising contact setting, the side mode and side form connecting portion are provided with a pair of of cylindrical body
It is hollow that the heart, the side form and intermediate die connecting portion are provided with a pair of of cuboid；
The cylindrical body is hollow and cuboid is hollow symmetrical respectively about the same plane of symmetry, the axis of the hollow evaporative pattern
On the plane of symmetry；
The axis of the hollow axis of the cylindrical body and hollow evaporative pattern is vertical；
The hollow minimum perpendicular distance with the plane of symmetry of the cylindrical body is greater than the hollow maximum perpendicular with the plane of symmetry of cuboid
Distance；
The symmetrical cuboid hollow edge line is without coincidence, and adjacent cylindrical body is hollow and cuboid hollow edge
Line is without coincidence.
Hollow evaporative pattern described in the utility model is the foamed material mould of flame-retardant coating layer package.In the present invention,
The foamed material be preferably one of polymethyl methacrylate, polyurethane, polyolefin, phenolic resin and epoxy resin or
Several, the polyolefin is preferably polyvinyl chloride and/or polystyrene.In the present invention, when the foamed material includes
When various ingredients, each component can be matched according to arbitrary quality.In the utility model specific embodiment, the foaming
Material is preferably polymethyl methacrylate material, and with low-density, high intensity, vaporization rate is fast, gas forming amount is low and can be most
Limits reduce the advantages that carbon deposition quantity.
In the present invention, the thickness of the flame-retardant coating layer is preferably 2~4mm, more preferably 3mm；Fireproof coating
The composition of layer is preferably zirconium English powder, white alundum powder, brown alundum powder, forsterite powder, magnesia powder, sintered bauxite, ripe kaolin, stone
One or more of Ying Fen, crystalline flake graphite, amorphous graphite, talcum powder and whiting.
In the present invention, in the hollow evaporative pattern source of all raw materials be all made of those skilled in the art institute it is ripe
The commercial product known, without any particular/special requirement.
Hollow evaporative pattern described in the utility model, side mode, side form and the intermediate die being sequentially arranged from outside to inside comprising contact.
In the present invention, the mode of the contact setting is preferably joggle, is bonded or ties up, and is more preferably bonded.This is practical new
Type does not have any particular/special requirement to the embodiment of the bonding, can bond bubble using well-known to those skilled in the art
The hot melt adhesive of foam material is bonded, it is described bonding formed adhesive layer thickness on the basis of guaranteeing bond effect,
More Bao Yuehao does not do specific requirement.
In hollow evaporative pattern described in the utility model, the side mode and side form connecting portion are provided with a pair of of cylindrical body sky
It is hollow that the heart, the side form and intermediate die connecting portion are provided with a pair of of cuboid.As depicted in figs. 1 and 2, the cylindrical body is hollow
Hollow symmetrical about the same plane of symmetry with cuboid, for the axis of the hollow evaporative pattern on the plane of symmetry, the cylindrical body is hollow
It is greater than the hollow maximum normal distance with the plane of symmetry of cuboid with the minimum perpendicular distance of the plane of symmetry；It is described symmetrical rectangular
Body hollow edge line is without coincidence, and adjacent cylindrical body is hollow and cuboid hollow edge line is without coincidence.
As shown in Figure 3 and Figure 4, the cylindrical body is hollow and the hollow minimum between hollow evaporative pattern outer surface of cuboid
Thickness preferably independently >=10mm, more preferably >=20mm；The cylindrical body is hollow and cuboid it is hollow between minimum thickness it is excellent
Choosing >=10mm, more preferably >=20mm；Minimum thickness between the symmetrical cuboid is hollow preferably >=20mm, more preferably
≥40mm.In the present invention, the cylindrical body is hollow and the hollow minimum between hollow evaporative pattern outer surface of cuboid
Thickness specifically refers to the minimum thickness of the entity part between hollow edge and hollow evaporative pattern edge；The cylindrical body it is hollow and
Minimum thickness between minimum thickness and the symmetrical cuboid between cuboid is hollow are hollow specifically refers to hollow
The minimum thickness of entity part between edge.
The utility model can guarantee the control of above-mentioned thickness voltage endurance capability >=0.1MPa of hollow evaporative pattern, keep away
Exempt from not enough mold to be caused to collapse due to compressive resistance.The utility model is hollow to the upper limit and cylindrical body of above-mentioned thickness
There is no specific requirement with itself hollow size of cuboid, on the basis of meeting above-mentioned thickness and intensity requirement, with identical external form
Solid evaporative pattern compare, cylindrical body is hollow and the hollow total hollow volume of cuboid is preferably no greater than solid evaporative pattern total volume
60%.Under the requirement for meeting the thickness, intensity and hollow volume at the same time, it is preferred to use thickness minimum, intensity highest, sky
The maximum hollow evaporative pattern scheme of heart volume.
As depicted in figs. 1 and 2, the corner of the hollow evaporative pattern exterior surface dimension variation is preferably provided with multiple exhausts
Hole.As shown in figure 5, the gas vent is preferably cylindrical, diameter preferably≤1mm, more preferably≤0.5mm；Two neighboring exhaust
Linear distance between hole preferably >=20mm；It is minimum thick that the depth of the gas vent is preferably not more than corresponding position foamed material
The 1/3 of degree.In the present invention, the setting of the gas vent increases saturating under the premise of not reducing hollow evaporative pattern intensity
Gas.In the present invention, the quantity of the gas vent preferably passes through the circumference at hollow evaporative pattern exterior surface dimension variation
Linear distance between length and two neighboring gas vent determines；It can specifically be grasped in conjunction with those skilled in the art
Routine techniques knowledge, be configured according to the intensity requirement of hollow evaporative pattern and gas permeability requirements；It again specifically, such as can basis
Circumferential length at hollow evaporative pattern exterior surface dimension variation, circumferentially 2,4,6 or 8 gas vents are arranged in equal part.
The preparation method of hollow evaporative pattern described in the utility model, comprises the following steps:
(1) the structure design that hollow evaporative pattern is carried out using simulation analysis software, is obtained by side mode, side form and intermediate die structure
At hollow lost foam pattern；
(2) according to the design scheme in step (1), made respectively of foamed material side mode component, side mould parts and in
Between mold part；
(3) connection assembling is carried out to the side mode component, side mould parts and intermediate mold part, it is young obtains hollow evaporative pattern
Shape；
(4) in the outer surface coating refractory dope layer of the hollow evaporative pattern blank, hollow evaporative pattern fire resisting blank is obtained；
(5) by hollow evaporative pattern fire resisting blank vibration moulding in dry sand, hollow evaporative pattern is obtained.
The utility model using simulation analysis software carry out hollow evaporative pattern structure design, obtain by side mode, side form and
The hollow lost foam pattern that intermediate die is constituted.The utility model is emulated using mold design well-known to those skilled in the art
Analysis software is designed, and design principle is while meeting the above-mentioned requirement about thickness, intensity and hollow volume.
After obtaining design scheme, the utility model is made respectively according to the design scheme in step (1), using foamed material
Make side mode component, side mould parts and intermediate mold part.The utility model is to the side mode component, side mould parts and intermediate mold part
Production method there is no particular/special requirement, prepared according to conventional method well-known to those skilled in the art.
The utility model carries out connection assembling to the side mode component, side mould parts and intermediate mold part, obtains hollow disappear
Lose mould blank.In the present invention, the requirement of the connection assembling is no longer repeated herein with contact setting above.
After obtaining hollow evaporative pattern blank, the utility model is applied in the outer surface coating refractory of the hollow evaporative pattern blank
The bed of material obtains hollow evaporative pattern fire resisting blank.Preferably the flame-retardant coating layer, institute is arranged by the way of brushing in the utility model
It states brushing to carry out according to conventional method well-known to those skilled in the art, without any particular/special requirement.The utility model
It is preferred that coat one layer of fireproof coating liquid in the outer surface of the hollow evaporative pattern blank, the fireproof coating liquid by refractory aggregate and
Carrier fluid composition, is dried fireproof coating liquid, obtains flame-retardant coating layer after removing carrier fluid.In the present invention, described
It is dry to be carried out according to paint-drying process commonly used by those skilled in the art, no particular/special requirement.
In the present invention, the refractory aggregate be preferably zirconium English powder, white alundum powder, brown alundum powder, forsterite powder,
One of magnesia powder, sintered bauxite, ripe kaolin, silica flour, crystalline graphite powder, amorphous graphite powder, talcum powder and whiting
Or it is several；The carrier fluid is preferably water and/or alcohol, and the alcohol is preferably methanol and/or ethyl alcohol.In the present invention, institute
The mass ratio for stating refractory aggregate and carrier fluid is preferably 2:(0.5~1.5), more preferably 2:(0.8~1.2), most preferably 2:(1
~1.1).
In the utility model specific embodiment, the fireproof coating liquid be preferably water base zirconium English powder, water base white alundum powder,
One or more of water base magnesia powder, water base sintered bauxite, water base crystalline graphite powder and water base amorphous graphite powder have price
Cheap, nontoxic advantage.The utility model does not have particular/special requirement to the granularity of the refractory aggregate, using art technology
The refractory aggregate of personnel institute Commonly Used Size.
After obtaining hollow evaporative pattern fire resisting blank, the utility model shakes the hollow evaporative pattern fire resisting blank in dry sand
Dynamic molding, obtains hollow evaporative pattern.In the present invention, the dry sand is preferably in quartz sand, jewelry sand and magnesium olive sand
One or more.The utility model does not have particular/special requirement to the source of the dry sand and partial size, is not had using those skilled in the art
Well known vibration moulding dry sand.
The utility model does not have particular/special requirement to the embodiment of the vibration moulding, ripe using those skilled in the art institute
The vibration formation method known.In the present invention, the vibration frequency of the vibration moulding is preferably 30~100Hz, more
Preferably 50~80Hz, most preferably 60~70Hz；Time of vibration is preferably 1~15 minute, with greater need for being 3~10 minutes, most
Preferably 5~8 minutes；Negative pressure of vacuum is preferably -0.09~-0.03MPa, more preferably -0.07~-0.05MPa.
Hollow evaporative pattern described in the utility model when in use, is directly poured from open riser, and it is straight that no setting is required
Running channel, cross gate and ingate improve the utilization rate of pour steel, reduce cutting polishing operation.Have in the utility model
In body embodiment, the utility model is poured using ZG230-450 and ZG270-500, and the poring rate of the casting is preferred
For 300~900kg/min, more preferably 400~800kg/min, most preferably 500~600kg/min；The temperature of the casting
Preferably 1460~1680 DEG C, more preferably 1500~1600 DEG C, most preferably 1530~1560 DEG C.The casting end
Afterwards, the utility model preferably cools down casting in sandbox, casting temperature is down to 600 DEG C and hereinafter, then by casting
It is taken out from sandbox, carries out Temperature fall in air, lead to casting deformation too early to prevent from unpacking.
Hollow evaporative pattern provided by the utility model is described in detail below with reference to embodiment, but cannot be it
Be interpreted as restriction to scope of protection of the utility model.
Embodiment 1
The structure design of hollow mould is carried out using simulation analysis software, the principle of structure design is to ensure hollow mould
Under the premise of voltage endurance capability is greater than 0.1MPa, foamed material dosage is reduced compared with the solid evaporative pattern of identical size and construction
20%.
By design scheme using polymethyl methacrylate foamed material production side mode component, side mould parts and intermediate die portion
Part.
Each parts bonding is assembled to the hollow mould to form casting.
Water base zirconium English powder fireproof coating is brushed in hollow mould outer surface and is dried, and the flame-retardant coating layer of 3mm thickness is obtained.
The hollow mould of brushing fireproof coating is embedded to vibration moulding in dry nice foundry sand, vibration frequency 50HZ, when vibration
Between be 3 minutes, negative pressure of vacuum be -0.05MPa.
It is poured using no running gate system, i.e., white mould, poring rate 500kg/ are replaced in pour steel directly from open riser
Min, pouring temperature are controlled at 1580 DEG C.
Cooling treatment, casting are cooled to 600 DEG C in sandbox and are air-cooled to room temperature hereinafter, unpacking.
Embodiment 2
The structure design of hollow mould is carried out using simulation analysis software, the principle of structure design is to ensure hollow mould
Under the premise of voltage endurance capability is greater than 0.1MPa, foamed material dosage is reduced compared with the solid evaporative pattern of identical size and construction
25%.
By design scheme using polymethyl methacrylate foamed material production side mode component, side mould parts and intermediate die portion
Part.
Each parts bonding is assembled to the hollow mould to form casting.
Water base zirconium English powder fireproof coating is brushed in hollow mould outer surface and is dried, and the flame-retardant coating layer of 3mm thickness is obtained.
The hollow mould of brushing fireproof coating is embedded to vibration moulding in dry nice foundry sand, vibration frequency 40HZ, when vibration
Between be 4 minutes, negative pressure of vacuum be -0.04MPa.
It is poured using no running gate system, i.e., white mould, poring rate 400kg/ are replaced in pour steel directly from open riser
Min, pouring temperature are controlled at 1570 DEG C.
Cooling treatment, casting are cooled to 600 DEG C in sandbox and are air-cooled to room temperature hereinafter, unpacking.
Embodiment 3
The structure design of hollow mould is carried out using simulation analysis software, the principle of structure design is to ensure hollow mould
Under the premise of voltage endurance capability is greater than 0.1MPa, foamed material dosage is reduced compared with the solid evaporative pattern of identical size and construction
30%.
By design scheme using polymethyl methacrylate foamed material production side mode component, side mould parts and intermediate die portion
Part.
Each parts bonding is assembled to the hollow mould to form casting.
Water base zirconium English powder fireproof coating is brushed in hollow mould outer surface and is dried, and the flame-retardant coating layer of 3mm thickness is obtained.
The hollow mould of brushing fireproof coating is embedded to vibration moulding in dry nice foundry sand, vibration frequency 30HZ, when vibration
Between be 5 minutes, negative pressure of vacuum be -0.03MPa.
It is poured using no running gate system, i.e., white mould, poring rate 300kg/ are replaced in pour steel directly from open riser
Min, pouring temperature are controlled at 1560 DEG C.
Cooling treatment, casting are cooled to 600 DEG C in sandbox and are air-cooled to room temperature hereinafter, unpacking.
Embodiment 4
The structure design of hollow mould is carried out using simulation analysis software, the principle of structure design is to ensure hollow mould
Under the premise of voltage endurance capability is greater than 0.1MPa, foamed material dosage is reduced compared with the solid evaporative pattern of identical size and construction
60%.
By design scheme using polymethyl methacrylate foamed material production side mode component, side mould parts and intermediate die portion
Part.
Each parts bonding is assembled to the hollow mould to form casting.
Water base zirconium English powder fireproof coating is brushed in hollow mould outer surface and is dried, and the flame-retardant coating layer of 3mm thickness is obtained.
The hollow mould of brushing fireproof coating is embedded to vibration moulding in dry nice foundry sand, vibration frequency 30HZ, when vibration
Between be 5 minutes, negative pressure of vacuum be -0.03MPa.
It is poured using no running gate system, i.e., white mould, poring rate 200kg/ are replaced in pour steel directly from open riser
Min, pouring temperature are controlled at 1550 DEG C.
Cooling treatment, casting are cooled to 600 DEG C in sandbox and are air-cooled to room temperature hereinafter, unpacking.
Comparative example
Solid evaporative pattern is made using polymethyl methacrylate foamed material, the structural schematic diagram of evaporative pattern such as Fig. 6 and
Shown in Fig. 7.
Water base zirconium English powder fireproof coating is brushed in solid model outer surface and is dried, and the flame-retardant coating layer of 3mm thickness is obtained.
The solid model of brushing fireproof coating is embedded to vibration moulding in dry nice foundry sand, vibration frequency 50HZ, when vibration
Between be 3 minutes, negative pressure of vacuum be -0.05MPa.
It is poured using no running gate system, i.e., white mould, poring rate 500kg/ are replaced in pour steel directly from open riser
Min, pouring temperature are controlled at 1580 DEG C.
Cooling treatment, casting are cooled to 600 DEG C in sandbox and are air-cooled to room temperature hereinafter, unpacking.
The solid evaporative pattern carbon increasing amount comparative analysis such as table that the hollow evaporative pattern and comparative example that the utility model obtains obtain
1:
The hollow evaporative pattern of table 1 and solid evaporative pattern carbon increasing amount comparative analysis
Note: Examples 1 to 3 is consistent with the overall dimensions of evaporative pattern obtained by comparative example；Every kind of trade mark is respectively same Baogang
Water casting, default molten steel initial carbonaceous amount are identical；The experiment bulk sample that sample is that identical structural casting same area intercepts,
Sample center portion and case case carbon are detected respectively.
As can be seen from Table 1: using the steel-casting of hollow lost foam casting production provided by the utility model, substantially reducing
The carbon increasing amount of steel-casting, especially surface layer carbon increasing amount, improve the mechanical performance of steel-casting, improve yield rate.
As seen from the above embodiment, the utility model provides the utility model and provides a kind of hollow evaporative pattern.This reality
With the novel hollow structure in mould inside setting specific shape and layout, reduces the usage amount of foamed material and breathe freely
Property, under the premise of not influencing its use, obtained cast(ing) surface carburetting is remarkably reduced, and improves the mechanical performance of casting
And surface property, improve casting yield.By embodiment result it is found that compared with solid evaporative pattern, mentioned with the utility model
The heart carburization amount and surface layer carbon increasing amount of the casting of the hollow evaporative pattern preparation supplied are substantially reduced.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (5)
1. a kind of hollow evaporative pattern, for the foamed material mould of flame-retardant coating layer package, which is characterized in that sequentially include from outside to inside
Contact side mode, side form and the intermediate die of setting, it is hollow that the side mode and side form connecting portion are provided with a pair of of cylindrical body, the side
It is hollow that mould and intermediate die connecting portion are provided with a pair of of cuboid；
The cylindrical body is hollow and cuboid is hollow symmetrical respectively about the same plane of symmetry, and the axis of the hollow evaporative pattern is right
On title face；
The axis of the hollow axis of the cylindrical body and hollow evaporative pattern is vertical；
The hollow minimum perpendicular distance with the plane of symmetry of the cylindrical body is greater than the hollow maximum normal distance with the plane of symmetry of cuboid；
The symmetrical cuboid hollow edge line without coincidence, adjacent cylindrical body is hollow and cuboid hollow edge line without
It is overlapped.
2. hollow evaporative pattern according to claim 1, which is characterized in that the cylindrical body is hollow and cuboid it is hollow with it is empty
Minimum thickness between heart evaporative pattern outer surface independently >=10mm；
The cylindrical body is hollow and cuboid it is hollow between minimum thickness >=10mm；
Minimum thickness >=20mm between the symmetrical cuboid is hollow.
3. hollow evaporative pattern according to claim 1 or 2, which is characterized in that the hollow evaporative pattern exterior surface dimension becomes
The corner of change is provided with multiple gas vents, and the gas vent is cylindrical, diameter≤1mm, between two neighboring gas vent
Linear distance >=20mm.
4. hollow evaporative pattern according to claim 1 or 2, which is characterized in that the flame-retardant coating layer with a thickness of 2~
4mm。
5. hollow evaporative pattern according to claim 1 or 2, which is characterized in that the mode of the contact setting is joggle, glues
It connects or ties up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820784620.2U CN208341636U (en) | 2018-05-24 | 2018-05-24 | A kind of hollow evaporative pattern |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820784620.2U CN208341636U (en) | 2018-05-24 | 2018-05-24 | A kind of hollow evaporative pattern |
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|---|---|
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ID=64890896
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436032A (en) * | 2018-05-24 | 2018-08-24 | 河北省同创交通工程配套产品产业技术研究院 | A kind of hollow evaporative pattern and preparation method thereof |
-
2018
- 2018-05-24 CN CN201820784620.2U patent/CN208341636U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436032A (en) * | 2018-05-24 | 2018-08-24 | 河北省同创交通工程配套产品产业技术研究院 | A kind of hollow evaporative pattern and preparation method thereof |
| CN108436032B (en) * | 2018-05-24 | 2023-12-19 | 河北省同创交通工程配套产品产业技术研究院 | Hollow lost foam and preparation method thereof |
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Address after: 053000 Hengshui city of Hebei Province North Taocheng District industrial base rubber road No. 1 Patentee after: HEBEI TONGCHUANG TRAFFIC ENGINEERING MATCHING PRODUCT INDUSTRY TECHNOLOGY Co.,Ltd. Patentee after: Hengshui Zhongyu Tiexin equipment Engineering Co.,Ltd. Address before: 053000 Hengshui city of Hebei Province North Taocheng District industrial base rubber road No. 1 Patentee before: HEBEI TONGCHUANG TRAFFIC ENGINEERING MATCHING PRODUCT INDUSTRY TECHNOLOGY Co.,Ltd. Patentee before: HENGSHUI YUCHANG CASTING Co.,Ltd. |
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