CN109926551A - The painting hanging method of evaporative pattern - Google Patents
The painting hanging method of evaporative pattern Download PDFInfo
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- CN109926551A CN109926551A CN201910306290.5A CN201910306290A CN109926551A CN 109926551 A CN109926551 A CN 109926551A CN 201910306290 A CN201910306290 A CN 201910306290A CN 109926551 A CN109926551 A CN 109926551A
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Abstract
The present invention discloses a kind of painting hanging method of evaporative pattern, comprising the following steps: multi-disc foam mold adhering components are combined into casting monomer, and paste the first adhesive tape in the first bonding plane of casting monomer；The second adhesive tape is pasted in the second bonding plane of the ingate；The runner components of casting monomer, step 2 are carried out submergence to be coated with；Casting monomer, runner components after being coated with take out, are dry；It tears the first adhesive tape, the second adhesive tape, the first bonding plane, the second bonding plane is glued, complete the assembling of casting monomer and runner components；Benefit swabbing is carried out after dry to the region not being bonded in the first bonding plane, the second bonding plane and obtains product.The present invention has the advantages that cost of labor is low, energy consumption is small, time loss is short compared to the painting hanging method of existing evaporative pattern.
Description
Technical field
The present invention relates to evaporative pattern technical field more particularly to the painting hanging methods of evaporative pattern.
Background technique
The energy of control product quality, has been focused primarily on black area by the lost foam casting factory of 95% or more the country.But it is past
Toward getting half the result with twice the effort, produce little effect.According to the statistics of foreign countries colleague, the power to make decision of 95% or more the quality of product quality in white area and
Yellow area.And in white area and yellow area, yellow area accounts for 40% specific gravity again.If yellow area is in refinement, technique for sticking accounts for 10%,
It is coated with technique and accounts for 45%, baking process accounts for 45%.Therefore it is coated with and baking process in Huang Qu is very important technique.Here I
Mainly to say the influence for being coated with technique.
White area refers to that the production area of bubbles model, yellow area refer to that coating area, black area refer at moulding, casting and sand
Manage area.Currently, domestic lost foam casting factory is coated with the generally existing following deficiency of technique:
One, the white mould of casting monomer reduce mould development difficulty in forming process, in order to reduce core pulling and loose piece.Generally
Casting monomer can be split into several widgets and then pass through bonding way again from Combination nova at a casting monomer.Old painting
Hanging technique is to paste the reserved face adhesive tape for needing to be bonded between widget, again tears adhesive tape off after being coated with and is bonded reserved face weight
Newly reveal through gluing technique for sticking from Combination nova into casting monomer.Cause to be coated with so often, applies thickness, variety of moduli weight
Amount is easy to appear greatly fracture.The widget reserved bonding plane that needs to tape is more, and hang apply after the completion of this goes adhesive tape combination viscous
The benefit swabbing difficulty of bonding plane is big after the completion of connecing, and working efficiency is low.
Secondly, due to being that widgets formula is coated with, it is directly proportional to the quantity being coated with for being coated with the size in circulation region.It is coated with
It needs to dry into drying chamber after the completion.Due to being coated with more than quantity so matching drying chamber quantity is also more.
Summary of the invention
Technical problem to be solved by the present invention lies in how to reduce people caused by the painting hanging method complexity of existing evaporative pattern
Work is at high cost, energy consumption is big, time loss is long.
The present invention is realized by following technological means solves a kind of above-mentioned technical problem: painting hanging method of evaporative pattern, packet
Include following steps:
Step 1: multi-disc foam mold adhering components are combined into casting monomer, and reserve in the casting monomer with it is interior
First bonding plane of running channel gluing, and the first adhesive tape is pasted on first bonding plane；
Step 2: sprue, cross gate, ingate three bonding are combined into runner components, and in the ingate
Reserved the second bonding plane with casting monomer gluing in surface, and the second adhesive tape is pasted on second bonding plane；
Step 3: by pouring for the second adhesive tape is pasted in the casting monomer for being pasted with the first adhesive tape in step 1, step 2
Road component carries out submergence respectively and is coated with；
Step 4: the casting monomer, runner components after step 3 is coated with take out, extra coating is removed；
Step 5: casting monomer, the runner components of step 4 are dried；
Step 6: the first adhesive tape of tearing, the second adhesive tape, glued by the first bonding plane, the second bonding plane, casting monomer is completed
With the assembling of runner components；
Step 7 carries out benefit swabbing after dry to the region not being bonded in the first bonding plane, the second bonding plane and obtains
Product.
Preferably, it is 2min that the Immersion time being coated with is submerged in the step 3.
Preferably, it is identical that the coating for mending in the coating and step 7 for be coated with use and brushing and using is submerged in the step 3,
The coating includes that the raw material of following mass fraction is prepared: 45~55 parts of mullite, 15~25 parts of diatomite, attapulgite
15~25 parts, 3~7 parts of polyvinyl acetate, 3~7 parts of carboxymethyl cellulose, 48~71 parts of water.
Preferably, it falls to remove extra coating in the step 4, it, will after specially taking out casting monomer, runner components
Hole, cavity in casting monomer and the hole in runner components, coating extra in cavity are poured out and are shaken 2~3 times.
Preferably, it is fallen in step 4 except carrying out casting monomer after extra coating and before step 5 is dry
Coating wet film thickness, running channel group coating wet film Thickness sensitivity, control casting monomer coating wet film thickness, running channel group coating wet film are thick
Identical and wet-film thickness is spent in 0.45~0.8mm, is measured by the wet coating thickness metric of the prior art.
Preferably, after mending swabbing in the step 7, the coating wet film thickness in benefit brush region applies after being coated with step 3
The thickness of layer wet film is identical.
Preferably, described Step 5: the drying in step 7 drying temperature≤35 DEG C.
The present invention has the advantages that glue is first uniformly applied to by the present invention by several widgets with automatic glue spreading machine
Bonding plane, then bonding is combined into casting monomer.Reduce in this way and reserved face paste is bonded to above and below the widget or face of left and right two
The processing of adhesive tape, and consistency is secure.Then only need for ingate to be bonded reserved face paste adhesive tape can, simplify
Process reduces bonding difficulty.Casting monomer is taken out after being integrally submerged into paint can after the completion of bonding, and extra coating is fallen
2~3 detection qualifications are trembled out and gently foam mold can be suspended to be coated on drying chamber loop chain hook in automatic flow to drying chamber.Due to
It does not need repeatedly to be coated with, coating layer thickness is thin, variety of moduli is light-weight.Reserved bonding plane of taping is few.Therefore subsequent benefit swabbing is simple
Labor intensity is low, and work efficiency is high.In addition, due to being first to combine bonding to be coated with again at casting monomer.Therefore it is coated with circulation
Region is small due to being not required to repeatedly be coated with, and matching drying chamber quantity also saves energy consumption less.
Further, lost foam paint of the invention increases aeration and adsorptivity while guaranteeing refractoriness, and has
Higher low temperature intensity and elevated temperature strength, resistance to erosion be not easy to crack.Using Inorganic suspending agent, suspendability is good, there is higher touching
Denaturation, azymic are safe from harm to human body without adding any preservative.It is good to be coated with performance, need to only be coated with one time, coating is thin heavy
Measuring light (general 0.45~0.8mm of coating layer thickness) can integrally be coated with.Therefore the turnaround time is short, and drying chamber quantity is few, and low energy consumption.Mitigate
The work load of bonding process, reduces adhesive reinforcement requirement.Cost performance is high, and with traditional lost foam paint ratio, price is to pass
2.5 times of system coating, but 1/3 of dosage less than traditional coating.And production efficiency is significantly improved, a large amount of people is saved
Work and place, the use for reducing drying chamber reduce energy consumption.
The present invention with the refractory aggregate mullite through stomata and controls mullite particle diameter distribution area by control addition
Between control gas permeability.If gas permeability is excessively high, the defects of will lead to aluminum liquid filling type excessive velocities, cause volume gas slag.If
The defects of gas permeability is too low, and it is excessively slow to will lead to aluminum liquid filling type speed, causes misrun, cold shut, stomata.
The present invention controls adsorptivity by adding the diatomite with more penetrability stomatas.Since aluminium alloy is poured temperature
Low about 750~760 DEG C are spent, polystyrene foam plastics can largely liquefy, a part gasification.Therefore coating needs to have good
Adsorptivity, liquefied substance is adsorbed to the gas hole defect for avoiding that liquefied substance wrapped folder into molten aluminum, is formed to disperse in time.
Mullite and diatomite in the present invention have the stomata of perforation, therefore thermal insulation property is all very good.So logical
Both materials are crossed to solve the problems, such as heat preservation.Since aluminium alloy pouring temperature is low, the small-sized casting of heavy wall is unobvious, especially in
Heavy castings or thin wall type casting when thermal-insulation coating performance is bad, are easy to appear cold shut and misrun defect.
The thixotropy of coating of the present invention be by attapulgite in stirring the cotton-shaped variation that generates realize and with carboxylic first
The suspendability of base cellulose combines the phenomenon that layering occur.For being poured thin-wall complicated aluminium alloy castings,
The especially casting thinnest part casting that there was only 3.5~4mm only has the gap 10mm at interlayer minimum.Also, a casting has more
A interlayer and functional areas, cavity structure are complicated, and by the oil duct of cast-internal, water channel, air flue and some fabrication holes plus
Strengthening tendons etc. pass through pouring one-step forming.Therefore it needs coating to have and good is coated with performance.Measure the quality master that coating is coated with performance
If thixotropy.In order to obtain with the lubricious of high-quality appearance, in coating use or in the mistake of coating dried/cured
Cheng Zhong needs to keep its sufficient horizontality, to avoid flowing down problems while reducing the generation of coating irregular surface
Occur, should make coating that there is thixotropy.Thixotropy is in coating composition in loosely bound structure its structure quilt after by shearing force
It caused by destruction, after static and restores to the original state, shows on coating, i.e., by stirring or shaking viscosity/dilute, stopping stirring
Or shake viscosity get higher/it is thick, be conducive to foam mold immersion in this way and be coated with operation, simplify technique, reduce labor intensity, improve certainly
Dynamic rate.
Lost foam paint of the invention has refractory aggregate mullite and diatomite through stomata by control addition,
To increase gas permeability.For diatomite due to more through stomata, its adsorptivity and thermal insulation property is very good.The thixotroping of coating
Property be that in stirring, the cotton-shaped variation that generates and carboxymethyl cellulose are cooperatively formed by attapulgite.And concave convex rod
Soil can make coating have good elevated temperature strength, and carboxymethyl cellulose makes coating have better suspendability, prevent coating point
Layer.Polyvinyl acetate can make coating have good low temperature intensity.Meeting lost foam paint, coating is not easy to crack at normal temperature, attached
The good not easily to fall off ash of performance；At a high temperature of attapulgite is met in casting, coating is not equally easy to crack, and has foot
Enough refractoriness and abrasion resistance.
Since coating of the invention uses natural mineral matter as raw material completely, wherein polyvinyl acetate is to be with water
Decentralized medium carry out emulsion polymerization and obtain, be a kind of aqueous, environmental protective glue, be widely used printing, weaving, leather, papermaking,
The industries such as cigarette；Carboxymethyl cellulose is mainly used in food service industry.Therefore the evaporative pattern aluminium alloy coating of my company will not be right
Personnel cause to bear with environment.
Detailed description of the invention
Fig. 1 is three cylinder body evaporative pattern its casting monomer in the embodiment of the present invention 2 in the case where bonding is combined into integrality
Structural schematic diagram.
Fig. 2 is that the first bonding plane is pasting first in three cylinder body evaporative pattern its casting monomer in the embodiment of the present invention 2
Structural schematic diagram under adhesive tape state.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
And attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
Embodiment 1
The present embodiment discloses a kind of painting hanging method of evaporative pattern, comprising the following steps:
Step 1: multi-disc foam mold adhering components are combined into casting monomer, and reserve in the casting monomer with it is interior
First bonding plane of running channel gluing, and the first adhesive tape is pasted on first bonding plane；
Step 2: sprue, cross gate, ingate three bonding are combined into runner components, and in the ingate
Reserved the second bonding plane with casting monomer gluing in surface, and the second adhesive tape is pasted on second bonding plane；
Step 3: by pouring for the second adhesive tape is pasted in the casting monomer for being pasted with the first adhesive tape in step 1, step 2
Road component carries out submergence respectively and is coated with；
Step 4: the casting monomer, runner components after step 3 is coated with take out, extra coating is removed；
Step 5: casting monomer, the runner components of step 4 are dried；
Step 6: the first adhesive tape of tearing, the second adhesive tape, glued by the first bonding plane, the second bonding plane, casting list is completed
The assembling of body, runner components；
Step 7 carries out benefit swabbing after dry to the region not being bonded in the first bonding plane, the second bonding plane and obtains
Product.
Glue is first uniformly applied to bonding plane with automatic glue spreading machine by several widgets by the present invention, then bonding group
Synthesize casting monomer.Reduce in this way and the processing of reserved face paste adhesive tape, and one are bonded to above and below the widget or face of left and right two
Cause property is secure.Then only need for ingate to be bonded reserved face (the first bonding plane) tape can, simplify process
Reduce bonding difficulty.Casting monomer is taken out after being integrally submerged into paint can after the completion of bonding, and extra coating is poured out simultaneously
It gently trembles 2~3 detection qualifications and foam mold can be suspended to and be coated on drying chamber loop chain hook in automatic flow to drying chamber.Due to being not required to
It to be repeatedly coated with, coating layer thickness is thin, variety of moduli is light-weight.Reserved bonding plane of taping is few.Therefore subsequent benefit swabbing simple work
Intensity is low, and work efficiency is high.In addition, due to being first to combine bonding be coated at casting monomer.Therefore it is coated with circulation region
It is small due to being not required to repeatedly be coated with, matching drying chamber quantity also saves energy consumption less.
In certain embodiments, it is 2min that the Immersion time being coated with is submerged in the step 3.
In certain embodiments, submergence is coated with and mends the painting that brush uses in the coating and step 7 of use in the step 3
Expect identical, the coating includes that the raw material of following mass fraction is prepared: 45~55 parts of mullite, 15~25 parts of diatomite,
15~25 parts of attapulgite, 3~7 parts of polyvinyl acetate, 3~7 parts of carboxymethyl cellulose, 48~71 parts of water.
In certain embodiments, it falls to remove extra coating in the step 4, specially takes casting monomer, runner components
After out, the hole in hole, cavity and the runner components in casting monomer, coating extra in cavity are poured out and shake 2~3
It is secondary.
In certain embodiments, it removes after extra coating and before step 5 is dry, is cast in step 4
Part monomer coating wet film thickness, running channel group coating wet film Thickness sensitivity control casting monomer coating wet film thickness, running channel group coating
Wet-film thickness is identical and wet-film thickness is in 0.45~0.8mm.
In certain embodiments, after mending swabbing in the step 7, the coating wet film thickness and step 3 in brush region are mended
The thickness for being coated with rear coating wet film is identical.
In certain embodiments, described Step 5: the drying in step 7 drying temperature≤35 DEG C.
Embodiment 2
As shown in Figure 1, 2, the present embodiment discloses a kind of painting hanging method of three cylinder body evaporative patterns, comprising the following steps:
Step 1: multi-disc foam mold adhering components are combined into casting monomer 1, and reserve in the casting monomer with it is interior
First bonding plane 11 of running channel gluing, and the first adhesive tape is pasted on first bonding plane 11；
Step 2: sprue, cross gate, ingate three bonding are combined into runner components, and in the ingate
Reserved the second bonding plane with casting monomer gluing in surface, and the second adhesive tape is pasted on second bonding plane；
Step 3: by pouring for the second adhesive tape is pasted in the casting monomer 1 for being pasted with the first adhesive tape in step 1, step 2
Road component carries out submergence respectively and is coated with, Immersion time 2min；
Step 4: the casting monomer 1, runner components after step 3 is coated with take out, extra coating is removed；
Step 5: casting monomer, the runner components of step 4 are dried, drying temperature is 33 DEG C；
Step 6: the first adhesive tape of tearing, the second adhesive tape, glued by the first bonding plane 11, the second bonding plane, casting list is completed
The assembling of body and runner components；
Step 7 carries out benefit swabbing, 33 DEG C of dryings to the region not being bonded in the first bonding plane 11, the second bonding plane
Afterwards, product is obtained.
It is identical that the coating for mending in the coating and step 7 for be coated with use and brushing and using is submerged in the step 3, the coating
Raw material including following mass fraction is prepared: 50 parts of mullite, 20 parts of diatomite, 20 parts of attapulgite, polyvinyl acetate 5
Part, 5 parts of carboxymethyl cellulose, 60 parts of water.Invention additionally discloses the preparation methods of coating: each dry powder raw material being added to the water, is stirred
It mixes 60min, impregnate 15h, obtain product.The agitator that stirring uses is preferably water-drop-shaped agitator.
It falls to remove extra coating in the step 4, after specially taking out casting monomer, runner components, by casting monomer
In hole, cavity and hole in runner components, coating extra in cavity pours out and shakes 3 times.
It is removed in step 4 after extra coating and before step 5 is dry, it is thick to carry out casting monomer coating wet film
Degree, running channel group coating wet film Thickness sensitivity, control casting monomer coating wet film thickness, running channel group coating wet film thickness are identical and wet
Film thickness is in 0.6mm.
After mending swabbing in the step 7, the coating wet film thickness and step 3 for mending brush region are coated with rear coating wet film
Thickness is identical.
Table 1 is the parameter lookup table that three cylinder cylinder bodies are coated with using the method for embodiment 2 and the method for the prior art.
Table 1
Identical product as can be seen from Table 1, likewise entering drying chamber baking time is 3 day time.Difference is coated with technique
Gap is obviously.First in drying chamber input quantity, since foam mold cannot be superimposed baking, superposition baking is easy to cause
Foam mold deformation.Therefore the technique that is coated with of the prior art using the quantity of drying chamber is that the present invention is coated with 5 times of technique.Personnel depaly
The technique that is coated with of the upper prior art is 4 times that the present invention is coated with technique, and the technique that is coated with of the production cycle prior art is the present invention
It is coated with 1.56 times of technique.Therefore the present invention, which is coated with technique, can reduce artificial, the energy, time cost for company, improve whole
Production efficiency and qualification rate.
The prior art is coated with technique when being coated with three cylinder bodies, needs to be bonded reserved face for 10 of five foam components
With type Continuous pressing device for stereo-pattern.It is difficult due to being pasted with type.For guaranteed efficiency, this process needs to be arranged 4 people with 2 day time to paste
Adhesive tape.Then it is coated with and needs to be arranged 2 people and be successively coated with five foam components, it is also necessary to which 2 people, which are arranged, will apply the component hung up properly
It is toasted 3 days in putting to 5 drying chambers.Bonding plane is finally reserved adhesive tape removing again and assembled by drying completion.This 4 are needed again
People expends 2 day time jointly, time-consuming and laborious to be difficult to mend swabbing there are also some bonding planes.After coating benefit brush place not in place is
The defects of continuing the scab occurred in casting process, burnt-in sand, crush, which hides some dangers for, leads to decrease in yield.
The present invention is coated with technique, first by five foam components of three cylinder bodies in white mould state disposably by be bonded workshop
It is assembled into casting unibody piece of foam and only in reserved place's (the first bonding plane 11) Continuous pressing device for stereo-pattern of ingate bonding of casting monomer.Only
Need the 1 day time of 1 people.Then after the whole immersion of 1 people of casting unibody piece of foam progress is coated with, when being toasted 3 days in feeding drying chamber
Between.Ingate is bonded reserved face adhesive tape again and tears assembling running gate system needs 0.5 day time of 1 people, simple laborsaving benefit swabbing off
It is simple and fast high-efficient.
It should be noted that, in this document, such as first and second or the like relational terms are used merely to one if it exists
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of painting hanging method of evaporative pattern, which comprises the following steps:
Step 1: multi-disc foam mold adhering components are combined into casting monomer, and the reserved and ingate in the casting monomer
The first glued bonding plane, and the first adhesive tape is pasted on first bonding plane；
Step 2: sprue, cross gate, ingate three bonding are combined into runner components, and on the surface of the ingate
Reserved the second bonding plane with casting monomer gluing, and the second adhesive tape is pasted on second bonding plane；
Step 3: the running channel group that the second adhesive tape will be pasted in the casting monomer for being pasted with the first adhesive tape in step 1, step 2
Part carries out submergence respectively and is coated with；
Step 4: the casting monomer, runner components after step 3 is coated with take out, extra coating is removed；
Step 5: casting monomer, the runner components of step 4 are dried；
Step 6: the first adhesive tape of tearing, the second adhesive tape, glued by the first bonding plane, the second bonding plane, complete casting monomer and pour
The assembling of road component；
Step 7 carries out benefit swabbing after dry to the region not being bonded in the first bonding plane, the second bonding plane and obtains product.
2. the painting hanging method of evaporative pattern according to claim 1, which is characterized in that submerge the leaching being coated in the step 3
It has no time as 2min.
3. the painting hanging method of evaporative pattern according to claim 1, which is characterized in that submergence is coated with use in the step 3
Coating and step 7 in mend brush use coating it is identical.
4. the painting hanging method of evaporative pattern according to claim 3, which is characterized in that the coating includes following mass fraction
Raw material be prepared: 45~55 parts of mullite, 15~25 parts of diatomite, 15~25 parts of attapulgite, polyvinyl acetate 3~7
Part, 3~7 parts of carboxymethyl cellulose, 48~71 parts of water.
5. the painting hanging method of evaporative pattern according to claim 1, which is characterized in that fall to remove extra painting in the step 4
Material, specially by casting monomer, runner components take out after, by hole, cavity and the runner components in casting monomer hole,
Extra coating is poured out and is shaken 2~3 times in cavity.
6. the painting hanging method of evaporative pattern according to claim 1, which is characterized in that step 4 remove extra coating it
Afterwards and before step 5 is dry, casting monomer coating wet film thickness, running channel group coating wet film Thickness sensitivity are carried out.
7. the painting hanging method of evaporative pattern according to claim 6, which is characterized in that control casting monomer coating wet film is thick
Degree, running channel group coating wet film thickness is identical and wet-film thickness is in 0.45~0.8mm.
8. the painting hanging method of evaporative pattern according to claim 6, which is characterized in that after mending swabbing in the step 7,
The coating wet film thickness for mending brush region is identical as the thickness that step 3 is coated with rear coating wet film.
9. the painting hanging method of evaporative pattern according to claim 1, which is characterized in that the dry drying temperature of the step 5
It is≤35 DEG C.
10. the painting hanging method of evaporative pattern according to claim 1, which is characterized in that the dry dry temperature of the step 7
Degree is≤35 DEG C.
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| CN201910306290.5A CN109926551A (en) | 2019-04-17 | 2019-04-17 | The painting hanging method of evaporative pattern |
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| JP2005046856A (en) * | 2003-07-30 | 2005-02-24 | Kimura Chuzosho:Kk | Full mold casting method |
| CN101497105A (en) * | 2009-03-12 | 2009-08-05 | 深圳市景鼎现代科技有限公司 | Cast form water borne coating and technique for preparing the same |
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