CN105522113B - A kind of airtight formwork precision stainless steel casting method of medium temperature - Google Patents
A kind of airtight formwork precision stainless steel casting method of medium temperature Download PDFInfo
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- CN105522113B CN105522113B CN201610090029.2A CN201610090029A CN105522113B CN 105522113 B CN105522113 B CN 105522113B CN 201610090029 A CN201610090029 A CN 201610090029A CN 105522113 B CN105522113 B CN 105522113B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- 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
- B22C7/026—Patterns made from expanded plastic materials by assembling preformed parts
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Abstract
The present invention relates to a kind of airtight formwork precision stainless steel casting method of medium temperature, comprise the following steps：Make formwork；Roasting mold shell, the pour steel into the formwork after roasting；After moulding by casting, cast product is cooled down to obtain.Beneficial effects of the present invention are：Save the power consumption of formwork roasting, it is 1050 DEG C that the formwork of conventional cast technique, which pours into a mould minimum critical-temperature, and method formwork pouring temperature of the present invention is 600 800 DEG C, this temperature for largely saving the energy and reducing workshop, improve work situation, the job enthusiasm of worker is improved, and then improves productivity ratio.The exhausting problem for considering formwork is not had to by the way of vertical arrangement, and when using horizontally arranged mode, oxidation reaction occurs with molten steel surface because air discharge is not thorough in formwork, form cast(ing) surface age spot, the serious quality that have impact on product, and when using vertical arrangement, then it can avoid the generation of these problems.
Description
Technical field
The present invention relates to a kind of casting method of stainless steel, and in particular to a kind of airtight formwork precision stainless steel casting of medium temperature
Make method.
Background technology
The weak corrosive mediums such as the resistance to air of stainless steel, steam, water or the steel grade with rustless property are referred to as stainless steel.Because of stainless steel
Burn into corrosion or abrasion are not likely to produce, it is one of intensity highest material in metal material for building, and it can make structure member
For good and all keep the integrality of engineering design.
At present, some problems of generally existing in the casting technique of stainless steel, such as：Power consumption is high, stainless steel material smelting furnace
Power consumption is molten steel power consumption, and stainless steel material, which will reach 1600 DEG C, can just be molten into liquid.In addition, temperature in roasting mold shell stove burner hearth
When reaching 1050 DEG C to 1250 DEG C, could be poured into a mould, and after burner hearth Temperature fall, from it is new be heated to 1050 DEG C just can be with
Cast, in view of this this power consumption is bigger.
In the wax-pattern component generally used, casting wax mould use level and the arrangement mode evacuated, the design of central aperture,
The design concept of wax-pattern component is to by thermal balance, conveniently discharge air, reduce the flow distance of molten steel.But due to traditional
Arrangement mode is all using horizontally arranged, and molten steel trickling lacks pressure, in the corner of casting wax mould place, often due to molten steel without
Method cast is full, and forms waste product, and percent defective usually reaches 11% or so.It is simultaneously horizontally arranged to be unfavorable for air in casting wax mould
Discharge, often result in that air discharge is not thorough, and the temperature of formwork is higher, and high temperature can decompose the crystallization water of die casing material
Oxygen is generated, oxidation reaction occurs with the surface of molten steel, cast(ing) surface is produced age spot, serious generation honeycomb, serious shadow
Ring the quality of product.
In addition, in stainless steel production, because requirement of the formwork to refractory material is higher, which results in raw materials for production
Cost is high, in order to meet framework calcinatory fire box temperature height, the technological requirement of formwork good permeability, the refractory material that formwork uses
It is required that energy high temperature resistant, good permeability, commonly used material is zircon sand (powder) at present, but its price is costly.Expensive
Raw material substantially increases the cost of casting, reduces the interests of businessman.
And foundry's indoor temperature is mainly by smelting furnace and the joint effect of framework calcinatory, and framework calcinatory body of heater
Greatly, exposed time length in operating process, it is the main source of workshop high temperature, the temperature of workshop is too high, and the work of worker is strong
Spend bigger, operating efficiency is low.
The content of the invention
In order to avoid shortcoming present in prior art, can reduce energy consumption the invention provides one kind, improve productivity ratio and
Product quality, save the airtight formwork precision stainless steel casting method of medium temperature of formwork refractory material cost.
The technical solution adopted in the present invention is：
A kind of airtight formwork precision stainless steel casting method of medium temperature, comprises the following steps：
(1) formwork is made；
(2) roasting mold shell, the pour steel into the formwork after roasting；
(3) casting stainless steel product is cooled down to obtain after moulding by casting in step (2).
Further, formwork is made in step (1) to comprise the following steps,
(1) casting cavity plate and die head cavity plate are made；
(2) wax is penetrated into casting cavity plate and die head cavity plate and obtains casting wax mould and die head wax-pattern respectively；
(3) casting wax mould is welded on die head wax-pattern and forms waxy component；
(4) waxy component is subjected to bag slurry, obtains waxy assembly mould；
(5) the waxy assembly mould after bag is starched is dewaxed, obtains formwork.
Further, in step (2) when the roaster fire box temperature of roasting mold shell reaches 600-800 DEG C, into formwork
Pour steel.The minimum critical-temperature of cast of common process roasting mold shell is 1050 DEG C, and is used in method of the present invention
Pouring temperature be 600-800 DEG C, when roaster fire box temperature reaches 600-800 DEG C, formwork is come out of the stove and poured into a mould, at this
During individual, roaster burner hearth can cool automatically, when next group formwork then being entered into stove, be heated to 600-800 DEG C, this
The temperature of roasting mold shell is reduced on the whole, is effectively saved, and does not influence the quality of casting.
Further, casting wax mould is welded perpendicular to die head wax-pattern in step (3).Common casting wax mould uses
Horizontally arranged mode, and due to stay exhaust clearance between adjacent casting wax mould formwork, arrange than more loose.It is of the present invention
Method be that formwork housing is air-locked, can not stay exhaust clearance with overlapping between casting wax mould formwork, be hung down using casting wax mould
Straight arrangement mode, make to arrange between casting wax mould it is compact, relative to common horizontally arranged mode, the wax-pattern group of same volume
Part, it can increase by 25% casting wax mould.It is when formwork is calcined, same roaster identical power consumption can increase by 25% can
For the casting type storehouse of cast, production efficiency is greatly improved, saves formwork roasting energy consumption 25%.Casting type storehouse is formed in formwork
Casting is product, and remaining is then die head, and the molten steel used in cast product accounts for the percentage of the total amount of whole formwork pour steel
Than being ratio defective product, water rate being in industry.Common horizontally arranged mode, is arranged than more loose, the ratio ratio shared by die head
It is higher, reduce ratio defective product.
Further, bag slurry comprises the following steps described in step (4)：White fused alumina and quartz sand mixing material feed powder are added into silicon
Colloidal sol is slurred uniform showering and starch adhesive, then uniformly one layer of white fused alumina of sprinkling and quartz sand mixing material sand is used as on waxy component
As floor sand, first layer bag slurry is formed；After first layer bag slurry is dried, it will not carry out emery dust and add Ludox to be slurred uniform showering to exist
On first layer bag slurry, then uniformly one layer of sprinkling does not carry out sand formation second layer bag slurry；After second layer bag slurry is dried, it will not carry out emery dust
Ludox is added to be slurred uniform showering on second layer bag slurry, then uniformly one layer of formwork reclaiming material sand of sprinkling forms third layer
Bag slurry；After third layer bag slurry is dried, it will not carry out emery dust and add Ludox to be slurred uniform showering on third layer bag slurry, then uniformly
One layer of formwork reclaiming material sand of sprinkling forms the 4th layer of bag slurry；After the 4th layer of bag slurry is dried, it will not carry out emery dust and add Ludox
Uniform showering is slurred on the 4th layer of bag slurry, realizes the bag slurry to waxy component.By starching the bag of waxy component, it is desirable to mould
Shell will reach certain intensity and bearing capacity, produce waxy assembly mould.Common process is when carrying out waxy component bag slurry, to bag
The requirement of pulp material is higher, it is necessary to which bag pulp material energy high temperature resistant and good permeability, the starch adhesive and floor sand of first layer are respectively adopted
Be zircon flour and zircon sand, and the price of zirconium English (powder) sand is costly.And method of the present invention, the face of first layer
What slurry and floor sand were respectively adopted is white fused alumina and quartz sand mixing material feed powder and white fused alumina and quartz sand mixing material sand, white fused alumina
With the price of the price of quartz sand mixing material well below zirconium English (powder) sand, the fire resisting temperature of white fused alumina and quartz sand mixing material
Though degree does not have, the refractory temperature of zirconium English (powder) sand is high, and in method of the present invention, its formwork sintering temperature is decreased,
So its using effect is not influenceed.Formwork of the present invention is air-locked simultaneously, and white fused alumina and quartz sand mixing material can just reach
To requiring.It directly will not carry out emery dust slurry showering on the 4th layer of bag slurry, and no longer spray floor sand, so doing can be by the floor sand of final layer
It is bonded together, prevents its drop.As than more preferably scheme, the ratio of white fused alumina and quartz sand is 80：20~60：40.
After casting formwork natural cooling after moulding by casting, shaken broken casting formwork using machinery, isolate stainless cast steel part
With formwork waste material, then cast product and casting die head are separated again, and casting die head and underproof cast product are then again
Melt down, the waste recovery processing of formwork is used as the floor sand of the 3rd, the 4th layer of bag slurry, not only cost-effective but also environmentally friendly.
Further, skeleton is provided with the die head wax-pattern, the casting wax mould is using the axis of skeleton as symmetry axis
The symmetrical both sides for being fixed on skeleton, being symmetricly set between the casting wax mould of skeleton both sides has angle.
Further, the length direction of the skeleton is provided with some groups of symmetrically arranged casting wax moulds, it is some
Group is symmetricly set on the angle all same between the casting wax mould of skeleton both sides.
Further, if the quantity of the skeleton is dried layer, some skeletons are located on same vertical plane, and by up to
Under be arranged in parallel.
Further, it is fixed on the ratio of the angle between the casting wax mould of skeleton described in upper strata and is fixed on bone described in lower floor
Angle between the casting wax mould of frame is big.Casting wax mould insertion i.e. on lower floor's skeleton is fixed thereon a layer skeleton
On the casting wax mould in.
Further, the top of the casting wax mould is connected with die head skeleton, and the top of the casting wax mould, which is provided with, pours
Geat, molten steel is from top to bottom during cast.The sprue gate of the casting wax mould of the horizontally arranged mode of common process is arranged on casting wax
The centre of mould, the trickling of such molten steel lack pressure, so that molten steel in the local or more sharp place in corner, all can not
Top full, and that sprue gate is arranged on to casting wax mould is poured into a mould, casting wax mould is vertical arrangement again, so because gravity is made
With adding the trickling pressure of molten steel, be advantageous to the air row in formwork is thorough, prevent it due to the air discharge in formwork
It is not thorough that oxidation reaction occurs with molten steel surface, cast(ing) surface age spot is formed, or even honeycomb is produced, influence the quality of product.
While vertical arrangement is advantageous to molten steel and quickly fills the every position in casting type storehouse, contributes to the raising of the qualification rate of cast product.
Beneficial effects of the present invention are：The power consumption of formwork roasting is saved, the formwork cast of conventional cast technique is minimum to face
Boundary's temperature is 1050 DEG C, and method formwork pouring temperature of the present invention is 600-800 DEG C, and this is largely saved
The energy.
Casting wax mould in present invention process wax-pattern component is by the way of compact vertical arrangement, common process wax-pattern component
In casting wax mould use loose horizontally arranged mode.Common process needs to consider the exhaust of formwork housing, casting wax mould formwork
Between to leave the gap of exhaust, therefore its arrangement mode is more loose dredges.And present invention process does not have to the exhaust for considering formwork, casting
Arrange compacter between part wax-pattern, 25% casting wax mould can be arranged more in the wax-pattern component of same volume, that is to say, that
The same power consumption of same roaster can increase by 25% casting type storehouse.The energy of formwork roasting has effectively been saved, has improved life
Produce efficiency.Simultaneously because common loose arrangement causes die head proportion larger.The compact arrangement die head of present invention process accounts for
Ratio reduces, and ratio defective product improves 7%.So production efficiency improves notable, and energy-saving effect is obvious, greatly reduces and is produced into
This.
In addition the horizontally arranged and sprue gate middle opening mode of common process, in cast, MOLTEN STEEL FLOW lacks pressure,
In local, the more sharp place in corner often due to molten steel can not be poured into a mould full and form waste product, this largely drops
The low qualification rate of product, improve the cost of product.Do not have to consider that the exhaust of formwork housing is asked by the way of vertical arrangement
Topic, molten steel is because Action of Gravity Field quickly fills type storehouse, and while making that air directly discharge from sprue gate in type storehouse, molten steel can be quickly
Each position in casting type storehouse is reached, product qualification rate is obviously improved.When common process uses horizontally arranged mode simultaneously, due to
Air discharge is not thorough in formwork, and oxidation reaction occurs with molten steel surface, forms cast(ing) surface age spot, serious meeting is in casting
Surface produces honeycomb, have impact on the quality of product.And the present invention can then avoid these problems when using vertical arrangement
Occur, cast product density is high, and finish is good, and product quality is excellent, and CSAT is high.
Because roasting mold shell is carried out under the high temperature conditions, the requirement to formwork refractory material is higher, and formwork uses resistance to
Fiery material requirements energy high temperature resistant, good permeability, so usually used waxy component bag pulp material, first layer bag slurry is respectively adopted
Zircon flour and zircon sand, and its price is costly, also increases production cost certainly.Because in method of the present invention
Formwork sintering temperature is dropped to 600-800 DEG C by common 1050 DEG C, when carrying out waxy component bag slurry, first layer uses respectively
Be white fused alumina and quartz sand mixing material feed powder and white fused alumina and quartz sand mixing material sand, white fused alumina and quartz sand mixing material
Price be only zircon sand material price half.The floor sand of its 3rd, the 4th layer bag slurry is then processed using recovery formwork waste material
Reworked material.Used material can meet the high temperature resistant requirement of formwork, reach formwork possessed intensity and support force.Simultaneously
Also comply with the air-locked purpose of formwork of the present invention.The cost of production is so reduced, improves the interests of businessman.
In addition, the temperature in cast product workshop is mainly by smelting furnace and the joint effect of framework calcinatory, and formwork is calcined
The body of heater of stove is bigger, and exposed time length in operating process, this is the main heating source for causing workshop high temperature, and the high increasing of workshop temperature
The labor intensity of people is processed, reduces the productivity ratio of work.And method of the present invention, the temperature of roaster is from 1050 DEG C
600-800 DEG C is dropped to, the temperature in workshop is effectively reduced, improves work situation, improves the job enthusiasm of worker, Jin Erti
High labor productivity.
Brief description of the drawings
Fig. 1 is the structural representation of the die head wax-pattern of cast stainless steel of the present invention；
Fig. 2 is the surveys view of the waxy component of cast stainless steel of the present invention；
Fig. 3 is the structural representation of the waxy component of cast stainless steel of the present invention.
In figure：1st, die head wax-pattern；2nd, skeleton；3rd, casting wax mould；4th, sprue gate.
Embodiment
With reference to embodiment, the invention will be further described.
A kind of airtight formwork precision stainless steel casting method of medium temperature, comprises the following steps：
Casting cavity plate and die head cavity plate are made according to casting sample, the paraffin heated after dissolving is noted into casting cavity plate and mould
In head cavity plate, that is, wax is penetrated described in industry, respectively obtain casting wax mould 3 and die head wax-pattern 1, use the side of heating welding
Method welds together casting wax mould 3 and die head wax-pattern 1, and this process is in industry called a group mould, is formed after connecting waxy
Component.
When casting wax mould 3 is welded on die head wax-pattern 1, using the mode of vertical arrangement, i.e., casting wax mould 3 is hung down
Directly welded in the skeleton 2 of die head wax-pattern 1.The mode of the common use level of casting wax mould 3 arrangement, is arranged than more loose.
Present invention process using the vertical arrangement mode of casting wax mould 3, make to arrange between casting wax mould 3 it is compact, relative to common water
Flat arrangement mode, the wax-pattern component of same volume, can increase by 25% casting wax mould 3.It is the same roasting when formwork is calcined
Burning the power consumption of stove identical can increase by the 25% casting type storehouse for being available for cast, greatly save formwork roasting energy consumption, improve production effect
Rate.The casting that casting type storehouse is formed in formwork is product, and remaining is then die head, and the molten steel used in cast product accounts for entirely
The percentage of the total amount of formwork pour steel, it is ratio defective product, water rate is in industry.Common horizontally arranged mode, arrangement
Than more loose, the ratio shared by die head is higher, reduces ratio defective product.Compact, die head phase is arranged between casting wax mould 3 of the present invention
To reducing, contribute to the raising of ratio defective product.
As shown in Figures 2 and 3：The specific fixed form of casting wax mould 3 and die head wax-pattern 1 is：On the die head wax-pattern 1
Skeleton 2 is provided with, the casting wax mould 3 is that symmetrical axial symmetry is fixed on the both sides of skeleton 2 with skeleton 2, is symmetricly set on 2 liang of skeleton
There is angle between the casting wax mould 3 of side.Because the shape of casting wax mould 3 is curved, so being symmetricly set on the both sides of skeleton 2
The casting wax mould 3 between can form angle.Along the length direction of the skeleton 2 be provided with some groups it is symmetrically arranged described
Casting wax mould 3, some groups of angle all sames being symmetricly set between the casting wax mould 3 of the both sides of skeleton 2.
As shown in figure 1, as preferred embodiment is compared, the quantity of the skeleton 2 is four layers.Four layers of skeleton 2
On same vertical plane, from top to bottom it be arranged in parallel.The folder being fixed between the casting wax mould 3 of skeleton 2 described in upper strata
Angle is more than the angle being fixed between the casting wax mould 3 of skeleton 2 described in lower floor.The casting being fixed on lower floor's skeleton 2
The insertion of part wax-pattern 3 is fixed thereon in the casting wax mould 3 on layer skeleton 2.
In order to increase the trickling pressure of molten steel, the top of the casting wax mould 3 is provided with sprue gate 4.Horizontally arranged mode
The sprue gate 4 of casting wax mould 3 be arranged on the centre of casting wax mould 3, the trickling of such molten steel lacks pressure, so that molten steel exists
The local or more sharp place in corner, top full, and that sprue gate 4 is arranged on to casting wax mould 3 can not be all poured into a mould, cast
Part wax-pattern 3 is vertical arrangement again, so adds the trickling pressure of molten steel, is advantageous to the air row in formwork type storehouse thoroughly,
Prevent it from oxidation reaction occurs with molten steel surface because the air discharge in formwork type storehouse is not thorough, form the small fiber crops of cast(ing) surface
Point, or even honeycomb is produced, influence the quality of product.
, it is necessary to carry out bag slurry to waxy component after waxy component is completed, method of the present invention using white fused alumina and
Quartz sand mixing material feed powder adds Ludox to be slurred uniform showering to be used as starch adhesive on waxy component, then uniformly one layer of sprinkling is white just
Beautiful and quartz sand mixing material sand forms first layer bag slurry as floor sand；After first layer bag slurry is dried, it will not carry out emery dust and add silicon
Colloidal sol is slurred uniform showering on first layer bag slurry, then uniformly one layer of sprinkling does not carry out sand formation second layer bag slurry；Treat the second layer
After bag slurry is dried, it will not carry out emery dust and add Ludox to be slurred uniform showering on second layer bag slurry, then uniformly one layer of formwork of sprinkling
Reclaiming material sand forms third layer bag slurry；After third layer bag slurry is dried, it will not carry out emery dust and add Ludox to be slurred uniformly drenching
It is coated on third layer bag slurry, then uniformly one layer of formwork reclaiming material sand of sprinkling forms the 4th layer of bag slurry；Treat that the 4th layer of bag slurry is dry
After dry, it will not carry out emery dust and add Ludox to be slurred uniform showering on the 4th layer of bag slurry, and by starching the bag of waxy component, make mould
Shell will reach certain intensity and bearing capacity, produce waxy assembly mould.Because formwork will reach certain intensity and bearing capacity, institute
During carrying out bag slurry to waxy component, the requirement to bag pulp material is higher, the common bag pulp material energy high temperature resistant and thoroughly of needing
Gas is good, and what the bag slurry of the waxy component of first layer used is zircon sand slurry and zircon sand respectively, and the price of zirconium English (powder) sand
Costly, method of the present invention, what first layer bag slurry used is white fused alumina and quartz sand mixing material slurry respectively
And sand, the price of white fused alumina and quartz sand mixing material is well below the price of zirconium English (powder) sand, white fused alumina and quartz sand mixing
Though the refractory temperature of material does not have, the refractory temperature of zirconium English (powder) sand is high, in method of the present invention, the roasting of its formwork
Temperature is decreased, so not influenceing its using effect.And it also is adapted for the air-locked technological requirement of formwork of the present invention.Carry out
During the 3rd, the 4th layer of bag slurry, its floor sand is then using the reworked material of recovery formwork waste material processing.It directly will not carry out emery dust slurry showering to exist
On 4th layer of bag slurry, floor sand is no longer sprayed, the floor sand of the 4th layer of sprinkling can be bonded together by so doing, and prevent its drop.
It is all in 25 DEG C of freeze-day with constant temperature that waxy component bag, which starches all processes, after the drying of waxy assembly mould, passes through heating
The method of pressurization, the paraffin dissolving in waxy assembly mould is excluded outside waxy assembly mould, dewaxing is called in industry, is obtained after dewaxing
Formwork.
Formwork is put into framework calcinatory burner hearth, formwork wants proper alignment when being put into, and interval appropriateness is grasped with facilitating
Make.After formwork is put well, heating roasting, when roaster fire box temperature reaches 600-800 DEG C, formwork is come out of the stove and carries out cast steel
Water, in this process, roaster burner hearth can cool automatically, when next group formwork then being entered into stove, be heated to 600-800 DEG C
, need to reach more than 1050 DEG C compared to roaster fire box temperature in the prior art, the present invention reduces on the whole
Roasting mold shell temperature, the energy is effectively saved, and does not influence the quality of casting.In addition, the temperature in cast product workshop mainly by
The joint effect of smelting furnace and framework calcinatory, and the body of heater of framework calcinatory is bigger, exposed time length in operating process, this
It is the main heating source for causing workshop high temperature, and workshop temperature height increases the labor intensity of workpeople, reduces the productivity ratio of work.
And method of the present invention, the temperature of roaster drop to 600-800 DEG C from 1050 DEG C, next group formwork is so put into roasting
When stove burner hearth is heated, the temperature of roaster burner hearth is increased to 600-800 DEG C of can, and common needs to be increased to 1050
DEG C, the temperature in workshop is so effectively reduced, improves work situation, improves the job enthusiasm of worker, and then improves life
Yield.
After casting formwork natural cooling after moulding by casting, shaken broken casting formwork using machinery, isolate stainless cast steel part
With formwork waste material, then cast product and casting die head are separated again, and casting die head and underproof cast product are then again
Melt down, and after the processing of formwork waste recovery, recycle in the 3rd, the 4th layer of floor sand of wax part component bag slurry, i.e. environmental protection again
Save raw material.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that other are various under the enlightenment of the present invention
The product of form, however, make any change in its details, it is every that there is technical scheme identical or similar to the present application,
It is within the scope of the present invention.
Claims (4)
- A kind of 1. airtight formwork precision stainless steel casting method of medium temperature, it is characterised in that：Comprise the following steps：(1) formwork is made, the making of the formwork comprises the following steps：1. casting cavity plate and die head cavity plate are made,2. wax is penetrated into casting cavity plate and die head cavity plate obtains casting wax mould and die head wax-pattern respectively,3. the casting wax mould is welded on the die head wax-pattern and forms waxy component, bone is provided with the die head wax-pattern Frame, the casting wax mould are fixed on the both sides of the skeleton using the axis of the skeleton as symmetrical axial symmetry, are symmetricly set on There is angle between the casting wax mould of skeleton both sides,4. waxy component is carried out into bag slurry, the bag slurry comprises the following steps：White fused alumina and quartz sand mixing material feed powder are added into silicon Colloidal sol is slurred uniform showering and starch adhesive is used as on waxy component, then uniformly one layer of white fused alumina of sprinkling and quartz sand compound sand are made For floor sand, first layer bag slurry is formed, after first layer bag slurry is dried, will not carry out emery dust and add Ludox to be slurred uniform showering the On one layer of bag slurry, then uniformly one layer of sprinkling does not carry out sand formation second layer bag slurry, after second layer bag slurry is dried, will not carry out emery dust and add Ludox is slurred uniform showering on second layer bag slurry, then uniformly one layer of formwork reclaiming material sand of sprinkling forms third layer bag Slurry, after third layer bag slurry is dried, it will not carry out emery dust and add Ludox to be slurred uniform showering on third layer bag slurry, then uniformly spray Spill one layer of formwork reclaiming material sand and form the 4th layer of bag slurry, after the 4th layer of bag slurry is dried, will not carry out emery dust and add Ludox to adjust Into uniform showering is starched on the 4th layer of bag slurry, the bag slurry to waxy component is realized, obtains waxy assembly mould,5. the waxy assembly mould after bag is starched is dewaxed, formwork is obtained；(2) roasting mold shell, when the roaster fire box temperature of roasting mold shell reaches 600-800 DEG C, the pour steel into formwork；(3) casting stainless steel product is cooled down to obtain after moulding by casting in step (2).
- 2. the casting method of the airtight formwork stainless steel of medium temperature according to claim 1, it is characterised in that：Described in The length direction of skeleton is provided with some groups of symmetrically arranged casting wax moulds.
- 3. the casting method of the airtight formwork stainless steel of medium temperature according to claim 2, it is characterised in that：The bone If the quantity of frame is dried layer, some skeletons are located on same vertical plane and from top to bottom be arranged in parallel.
- 4. the casting method of the airtight formwork stainless steel of medium temperature according to claim 3, it is characterised in that：It is fixed on Angle between the casting wax mould of skeleton described in upper strata is than being fixed between the casting wax mould of skeleton described in lower floor Angle is big.
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| CN203737927U (en) * | 2014-03-26 | 2014-07-30 | 重庆江增机械有限公司 | Turbine blade investment casting wax pattern assembled welding structure |
| CN104368748B (en) * | 2014-11-07 | 2017-03-22 | 贵州安吉航空精密铸造有限责任公司 | Investment casting shell molding process |
| CN204234669U (en) * | 2014-11-18 | 2015-04-01 | 连云港源钰金属制品有限公司 | Be convenient to the hot investment casting wax tree structure departed from |
| CN104874739B (en) * | 2015-06-19 | 2016-08-17 | 东方电气集团东方汽轮机有限公司 | CRDM machine parts'precise casting and molding method |
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| US7942189B1 (en) * | 2008-04-16 | 2011-05-17 | Mashallah Quraishi | Reusable wax tree sprue rod assembly for tree making in lost wax investment casting and method use |
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