CN101921097A - Formula for large size gypsum core model forming suitable for gypsum layer with larger thickness - Google Patents
Formula for large size gypsum core model forming suitable for gypsum layer with larger thickness Download PDFInfo
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- CN101921097A CN101921097A CN201010238189XA CN201010238189A CN101921097A CN 101921097 A CN101921097 A CN 101921097A CN 201010238189X A CN201010238189X A CN 201010238189XA CN 201010238189 A CN201010238189 A CN 201010238189A CN 101921097 A CN101921097 A CN 101921097A
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- China
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- component
- gypsum
- core model
- formula
- large size
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a formula for large size gypsum core model forming suitable for a gypsum layer with larger thickness. The formula is prepared from gypsum cement powder, component A, component B and water in the weight ratio of 100 to 20 to 2 to 1 to X, wherein X is selected in a range of between 4 and 10; the component A is one or combination of more than one of glass fiber yarns, hemp ropes and lace cords; and the component B is one or combination of more than one of ethanol, acetone and ethyl acetate. The formula can prepare the large size gypsum core model which can fulfill the product required strength and has excellent integral performance, good manufacture process and good detachment, wherein the core model has high smoothness and little cracking, and the machined core model has excellent performance, so the formula solves the problems that, in the large gypsum core models, in particular revolution gypsum core models with large diameters and thicker gypsum layers, the core model forming is failed due to the fact that the slurry is thrown out or is separated from the core model surface under the dead weight influence in the forming process.
Description
Technical field
The present invention relates to produce winding motor body and various matrix material storage tank, the used gypsum core prescription of special container, particularly relate to a kind of bigger large size gypsum core mold forming of gypsic horizon thickness that is applicable to filling a prescription.
Background technology
The winding motor body of Aeronautics and Astronautics, military affairs and civil area, various large-scale composite material storage tank and special container etc. all will be used the gypsum core in the process of making.The gypsum core comprises the composite core formwork of gypsum surface layer-metallic framework, guarantees that therefore, it is good to have dimensional stability because its profile is a scraper by special use, the dimensional precision height, and advantage such as good manufacturability and cost are lower obtains application more and more widely.And during preparation gypsum core, the ratio difference that starting material such as gypsum, cement are shared, the performance of the gypsum core of preparing is also just different, especially to some solid of revolution, major diameter, gypsum core that gypsic horizon thickness is bigger, existing prescription can't be prepared this complex structure, the large size gypsum core that gypsic horizon thickness is bigger.If used various starting material and ratio thereof are improper, be easy to cause core in the process of rotoforming during because of the preparation core, slip is thrown out of or slip separates from the skeleton surface under the influence of deadweight, thereby causes the mandrel molding failure.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of above-mentioned background technology, provide a kind of bigger large size gypsum core mold forming of gypsic horizon thickness that is applicable to prescription, it is good and tear the large size gypsum core of good unloading open to prepare the intensity, overall performance excellence, the anufacturability that satisfy product requirement by this prescription.
The bigger large size gypsum core mold forming of gypsic horizon thickness that is applicable to provided by the invention is with filling a prescription, by terra alba, cement flour, A component, B component and water is 100: 20: 2 by weight: 1: the ratio of X is formulated, the X value is between 4～10, described A component is one or more the combination in glass fiber yarn, the rope made of hemp, the lace cord, and the B component is one or more the combination in ethanol, acetone, the ethyl acetate.
Further, described X value is between 6～8.
Be cut into the fragment of 1mm～5mm when further, described A component is prepared.
Prescription of the present invention is applicable to preparation winding motor body, matrix material storage tank and the used gypsum core of special container, and this prescription is formulated by a certain percentage by terra alba, cement flour, A component, B component and water.Concrete preparation program is: terra alba, cement flour are sieved (100 order), reject wherein impurity and big caking, standby; The A component is cut into the fragment of 1mm～5mm, standby; Be terra alba by weight: cement flour: A component: B component: (the X value is between 4～10 for water=100: 20: 2: 1: X, be decided according to the actual requirements) ratio take by weighing an amount of starting material, then terra alba, cement flour are mixed in the rubber bucket of packing into, standby; The B component is poured in the water in proportion, mixed standby.Before the gypsum core mold forming, various starting material to be mixed into slip earlier, on specific equipment, slip be molded into needed gypsum core shape then by the special tooling utensil.During mixed slurry, successively the mixed solution of A component, B component and water is poured in proportion in the gypsum that mixed, the barrel of cement, after 2～5min stirred in the time, used rapidly.The consumption X of water can adjust according to practical situation (comprising environment temperature, humidity, mandrel molding early stage, mid-term, later stage etc.) in the prescription, and the X value is preferably between 6～8.
Compare with existing prescription, the invention has the advantages that:
Use prescription of the present invention, it is good and tear the large size gypsum core of good unloading open to prepare the intensity, overall performance excellence, the anufacturability that satisfy product requirement, adopt the gypsum core of this formulation owing to added special component, increased the surface bonding power between the slip, then can be good at solving the problem that slip comes off, and the gypsum core surface smoothness height of preparing does not almost have crackle, and to add performance good for machine behind the core.This prescription has solved large-scale gypsum core, especially to some solid of revolution, major diameter, gypsum core that gypsic horizon thickness is bigger, in the process of moulding, be thrown out of or slip separates a difficult problem that causes the mandrel molding failure from mandrel surface under the influence of deadweight owing to slip.
Embodiment
Is that example is described further this prescription below by certain product of preparation with the gypsum core.
This core is the composite core formwork of gypsum surface layer-metallic framework, and product structure is: this product is an end φ 1200mm, an end φ 1400mm, and shell portion is about the truncated cone structure of 1000mm, simultaneously the two ends ring flange (end frame) of 50mm of respectively having an appointment.At first assemble the core metallic framework, guarantee dimensional requirement.Its enforcement can be undertaken by following operation:
Embodiment 1:X=6, the A component is a glass fiber yarn, and the B component is an ethanol, and the A component is cut into the fragment of 2mm.
Preparation work: terra alba, cement flour after will sieve (100 order) take by weighing 200kg, 40kg respectively, and be in 12 the rubber buckets of on average packing into after mixing, standby; Take by weighing the glass fiber yarn of 4kg, then glass fiber yarn is cut into the fragment about 2mm, on average pour in 12 rubber buckets that gypsum, cement flour be housed; Take by weighing 12kg water again, average mark is contained in 12 plastic tanks, takes by weighing the ethanol of 2kg then, on average pours in 12 plastic tanks that water is housed, and is standby.
Mandrel molding: open gypsum core mold forming machine, adjust rotating speed to 2r/min, in terra alba: cement flour: glass fiber yarn: ethanol: water=100: 20: 2: 1: 6 ratio, the aqueous solution in the plastic tank is poured in the rubber bucket successively, with gypsum, the cement admixture thorough mixing in the rubber bucket, and constantly stir, in the time slip is stirred into starchiness at about 3min, on gypsum core mold forming machine, slip is molded into the needed core shape of product then by special scraper.After treating core oven dry or drying naturally, promptly become metallic framework-gypsum surface layer core.
Can work the combination that strengthens bonding force between the gypsum slip and do not influence one or more materials that follow-up gypsum core machine adds because the A component can be glass fiber yarn, the rope made of hemp, lace cord etc., and the A component to be cut into the fragment of 1mm～5mm.The B component can be ethanol, acetone, ethyl acetate etc. can rise promote moisture evaporation, quicken that the gypsum slip solidifies and material soluble in water in one or more combination.The value of X is between 4～10, and best value is between 6～8, and practical situation mainly comprises situations such as environment temperature, humidity condition, gypsum core mold forming early stage, mid-term, later stage.Therefore other embodiment is different with embodiment 1 except the length of the composition of the composition of the value of X, A component, B component, fragment that the A component is cut into, and all the other operations are basic identical.Only enumerate other embodiment and embodiment 1 distinct portions below, same section repeats no more.
Embodiment 2:X=7, the A component is the rope made of hemp, and the B component is an acetone, and the A component is cut into the fragment of 3mm.
Embodiment 3:X=8, the A component is a lace cord, and the B component is an ethyl acetate, and the A component is cut into the fragment of 4mm.
Embodiment 4:X=4, the A component is the mixture of the glass fiber yarn and the rope made of hemp, and the B component is the mixture of ethanol and acetone, and the A component is cut into the fragment of 1mm.
Embodiment 5:X=10, the A component is the mixture of glass fiber yarn and lace cord, and the B component is the mixture of ethanol and ethyl acetate, and the A component is cut into the fragment of 5mm.
Embodiment 6:X=9, the A component is the mixture of the lace cord and the rope made of hemp, and the B component is the mixture of ethanol and acetone, and the A component is cut into the fragment of 1mm.
Embodiment 7:X=5, the A component is the rope made of hemp, and the B component is the mixture of ethanol and ethyl acetate, and the A component is cut into the fragment of 2mm.
Embodiment 8:X=6, the A component is the mixture of glass fiber yarn and lace cord, and the B component is the mixture of acetoneand ethyl acetate, and the A component is cut into the fragment of 3mm.
Embodiment 9:X=7, the A component is the mixture of glass fiber yarn, the rope made of hemp and lace cord, and the B component is an ethanol, and the A component is cut into the fragment of 4mm.
Embodiment 10:X=8, the A component is the mixture of glass fiber yarn and lace cord, and the B component is the mixture of ethanol, acetoneand ethyl acetate, and the A component is cut into the fragment of 5mm.
Because this product core is a flange truncated cone structure, simultaneously, also to pass through special processing after the core oven dry, therefore, actual gypsic horizon thickness is greater than 30mm, and the consumption of gypsum slip reaches more than the 200kg.More than 2 determined used slip not only each other bonding force to get well, avoided core in the process of rotoforming, slip is thrown out of or slip separates and cause the mandrel molding failure from mandrel surface under conducting oneself with dignity, and gypsic horizon will have certain intensity, to satisfy the requirement that the back machine adds.But intensity again can not be excessive, and because of the intensity of gypsic horizon is directly proportional with the consumption of cement, intensity is excessive, cement consumption is too much, and slip deadweight increase may cause slip to separate and cause the mandrel molding failure from mandrel surface, intensity is excessive in addition, also is unfavorable for the dismounting of follow-up core.
By the successful Application on the said products, show that the gypsum core surface quality of using this formulation is good, the dimensional precision height, it is good that machine adds performance, (15MPa＜ultimate compression strength＜30MPa), overall performance excellence and cost are lower, can be good at satisfying the moulding requirement of some solid of revolution, major diameter, core that gypsic horizon thickness is bigger for intensity.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
The content that is not described in detail in this specification sheets belongs to this area professional and technical personnel's known prior art.
Claims (3)
1. one kind is applicable to that the bigger large size gypsum core mold forming of gypsic horizon thickness is with filling a prescription, it is characterized in that: this prescription is 100: 20: 2 by terra alba, cement flour, A component, B component and water by weight: 1: the ratio of X is formulated, the X value is between 4～10, described A component is one or more the combination in glass fiber yarn, the rope made of hemp, the lace cord, and the B component is one or more the combination in ethanol, acetone, the ethyl acetate.
2. the bigger large size gypsum core mold forming of gypsic horizon thickness that is applicable to as claimed in claim 1 is with filling a prescription, and it is characterized in that: described X value is between 6～8.
3. the bigger large size gypsum core mold forming of gypsic horizon thickness that is applicable to as claimed in claim 1 or 2 is with filling a prescription, and it is characterized in that: described A component is cut into the fragment of 1mm～5mm when preparing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010238189XA CN101921097A (en) | 2010-07-28 | 2010-07-28 | Formula for large size gypsum core model forming suitable for gypsum layer with larger thickness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010238189XA CN101921097A (en) | 2010-07-28 | 2010-07-28 | Formula for large size gypsum core model forming suitable for gypsum layer with larger thickness |
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| CN101921097A true CN101921097A (en) | 2010-12-22 |
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| CN201010238189XA Pending CN101921097A (en) | 2010-07-28 | 2010-07-28 | Formula for large size gypsum core model forming suitable for gypsum layer with larger thickness |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010914A (en) * | 2017-04-01 | 2017-08-04 | 东风精密铸造安徽有限公司 | A kind of water-soluble plaster core formula of moltening mold castings |
| CN107673485A (en) * | 2017-11-08 | 2018-02-09 | 钟华 | Mixed bacteria, strain carrier and the method for excrement colibacillus group in sustainable processing creek black and odorous water |
| CN114274346A (en) * | 2021-11-23 | 2022-04-05 | 湖北三江航天江北机械工程有限公司 | Method for forming net-size gypsum core model of fiber-wound engine shell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071654A (en) * | 1992-10-19 | 1993-05-05 | 刘光辉 | The preparation of multi-function plaster composite board and technology |
| CN1115309A (en) * | 1994-07-18 | 1996-01-24 | 朱宏兴 | Gypsum composite and its production technique |
| CN201525132U (en) * | 2009-09-08 | 2010-07-14 | 国营江北机械厂 | Detachable core die |
-
2010
- 2010-07-28 CN CN201010238189XA patent/CN101921097A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071654A (en) * | 1992-10-19 | 1993-05-05 | 刘光辉 | The preparation of multi-function plaster composite board and technology |
| CN1115309A (en) * | 1994-07-18 | 1996-01-24 | 朱宏兴 | Gypsum composite and its production technique |
| CN201525132U (en) * | 2009-09-08 | 2010-07-14 | 国营江北机械厂 | Detachable core die |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010914A (en) * | 2017-04-01 | 2017-08-04 | 东风精密铸造安徽有限公司 | A kind of water-soluble plaster core formula of moltening mold castings |
| CN107673485A (en) * | 2017-11-08 | 2018-02-09 | 钟华 | Mixed bacteria, strain carrier and the method for excrement colibacillus group in sustainable processing creek black and odorous water |
| CN114274346A (en) * | 2021-11-23 | 2022-04-05 | 湖北三江航天江北机械工程有限公司 | Method for forming net-size gypsum core model of fiber-wound engine shell |
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Application publication date: 20101222 |