CN110526616A - One kind is based on the certainly hard molding casting mold processing method of gypsum sand - Google Patents
One kind is based on the certainly hard molding casting mold processing method of gypsum sand Download PDFInfo
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- CN110526616A CN110526616A CN201910721283.1A CN201910721283A CN110526616A CN 110526616 A CN110526616 A CN 110526616A CN 201910721283 A CN201910721283 A CN 201910721283A CN 110526616 A CN110526616 A CN 110526616A
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- Prior art keywords
- sand
- casting mold
- material mixture
- gypsum
- processing method
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- 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
-
- 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
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to one kind based on the certainly hard molding casting mold processing method of gypsum sand, comprising the following steps: S1: preparing gypsum sand, passes through the gypsum sand that extrusion granulation forms -140 mesh granularity of 30 mesh using the land plaster that high-temperature calcination obtains；S2: auxiliary material sand, resin, curing agent, molding retarder and the powder surface active material of preset ratio are sequentially added, in the gypsum sand to obtain sand material mixture；S3: the sand material mixture is carried out mixing is sufficiently stirred, and the sand material mixture stirred and evenly mixed is delivered in sandbox and carries out moulding and consolidation；S4: the sand material mixture completes molding after self-hardening in the sandbox, to obtain casting mold blank；S5: post-processing is carried out to the casting mold blank, to obtain casting mold.The processing method has the feature of high strength gypsum high intensity, ensure that casting dimension stability is good, precision is high.
Description
Technical field
The present invention relates to casting mould molding technology thereofs, more particularly to a kind of gypsum sand that is based on to add from hard molding casting mold
Work method.
Background technique
Current casting and molding method includes that sand casting, silica solution model casting, waterglass model casting, precoated sand add
The techniques such as heat cure, cold core box process, plaster casting.
Plaster casting is a kind of hot investment casting new technology that 1970s grow up.It is to assemble fusible pattern,
And be fixed on the sandbox plate for specializing in grouting, gypsum slurry is poured under vacuum, through drying after slurry condensation
Fusible pattern is removed, then drying, roasting become gypsum mould, casting obtains casting under vacuum.Gypsum sand uses semi-hydrated gypsum for base
Material, high molecular polymer are cementitious material, and inorganic filler is dry blended to be formed.
Using traditional refractory material sand casting, in traditional handicraft, the regenerating useds such as water-glass sand and alkali phenol resin sand
Difficult, energy consumption height, overall cost are high, and solid waste discharge is big, the feature of environmental protection is poor.
Summary of the invention
In order at least partly solve the problems, such as present in existing molding production process it is above-mentioned at least one, the present invention propose
Following technical solution:
One kind is based on the certainly hard molding casting mold processing method of gypsum sand, comprising the following steps:
S1: preparing gypsum sand, forms -140 mesh granularity of 30 mesh by extrusion granulation using the land plaster that high-temperature calcination obtains
Gypsum sand；
S2: sequentially added in the gypsum sand auxiliary material sand of preset ratio, resin, curing agent, molding retarder and
Powder surface active material, to obtain sand material mixture；
S3: the sand material mixture is carried out mixing is sufficiently stirred, and the sand material mixture stirred and evenly mixed is delivered in sandbox
Carry out moulding and consolidation；
S4: the sand material mixture completes molding after self-hardening in the sandbox, to obtain casting mold blank；
S5: post-processing is carried out to the casting mold blank, to obtain casting mold.
Further, in step s 2, the auxiliary material sand include nice foundry sand, mullite sand, silica sand, in ceramic sand at least
One kind, and the additional amount of the auxiliary material sand accounts for the 0-50% of the sand material mixture total weight.
Further, in step s 2, the resin is organic resin or inorganic adhesive, and the additional amount of the resin accounts for
The 1-10% of the sand material mixture total weight.
Further, in step s 2, the powder surface modification material includes high purity silane coupling agent or silicon powder, described
The additional amount of powder surface modification material accounts for the 0-10% of the sand material mixture total weight.
Further, in step s 2, the molding retarder includes phosphate, alkali borate, borax, boron
Acid, citric acid and its salt, sodium succinate, ethylhexyldithiophosphoric acid sodium, methyl acid sodium, oxalic acid, protein adhesive, hide glue, silica solution, in spent pulping liquor
One kind, the additional amount of molding retarder accounts for the 0-5% of the sand material mixture total weight.
Further, in step s 4, curing time needed for the sand material mixture completes self-hardening in the sandbox
It is 0-120 minutes.
Further, in step s 5, the post-processing successively includes: repairing type, swabbing, mould assembling, hot-air seasoning, pours
Note, knockout, regeneration.
It is provided by the present invention raw by compatible traditional self-hardening sand from hard molding casting mold processing method based on gypsum sand
Producing line and equipment carry out mulling moulding production.The major advantage of the technology is in following several respects:
1, have the feature of high strength gypsum high intensity, ensure that casting dimension stability is good, precision is high；
2, existing main several self-hardening sand processing lines can be compatible with completely to be produced；
3, moulding production process is simple, flexible, controllable；
4, collapsibility is splendid, especially can solve the problem of sodium silicate sand collapsing hardly possible；
5, solid waste is close to zero-emission, and broken waste material can enter the industries such as cement and make full use of, environmental protection.
Detailed description of the invention
Fig. 1 is provided by the present invention based on a kind of certainly hard molding specific embodiment of casting mold processing method of gypsum sand
Structural schematic diagram.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Referring to FIG. 1, Fig. 1 is provided by the present invention a kind of specific from hard molding casting mold processing method based on gypsum sand
The structural schematic diagram of embodiment.
In a specific embodiment, the art of this patent refers to high strength gypsum powder (the half water stone of type containing α of high-temperature calcination
Cream or beta-type semi-hydrated gypsum) by the professional extrusion granulation formation varigrained high strength gypsum sand of -140 mesh of 30 mesh, according to casting
Material and requirement the other foundry sands, resin, curing agent, retarder and the powder surface activity material that centainly match is added
Material is sequentially added into self-hardening sand sand blender and carries out that mixing is sufficiently stirred, and is shaked out by sand mixer sand export to being carried out in sandbox
Moulding and consolidation, by certain time carry out self-hardening molding, carry out repairing type after molding, using with traditional self-hardening sand molding work
The swabbing of skill, mould assembling, hot-air seasoning, casting, knockout, regeneration production process.
It is provided by the invention based on the certainly hard molding casting mold processing method of gypsum sand in order to improve the performance of casting mold, including
Following steps:
S1: preparing gypsum sand, forms -140 mesh granularity of 30 mesh by extrusion granulation using the land plaster that high-temperature calcination obtains
Gypsum sand；The high-strength hemihydrate gypsum powder of high-temperature calcination dehydration is such as: α, β two and half water (ripe) gypsum CaSO41/2H2O, I,
II, III type, three kinds of anhydrous gypsums are granulated the gypsum sand to form 20-140 mesh gradation by professional abrasive material；Additional amount accounts for the 0- of gross weight
90%.
S2: sequentially added in the gypsum sand auxiliary material sand of preset ratio, resin, curing agent, molding retarder and
Powder surface active material, to obtain sand material mixture；Wherein, the auxiliary material sand includes nice foundry sand, mullite sand, silica sand, ceramics
At least one of sand, and the additional amount of the auxiliary material sand accounts for the 0-50% of the sand material mixture total weight.The resin is to have
Machine resin or inorganic adhesive, the additional amount of the resin account for the 1-10% of the sand material mixture total weight.The powder surface
Modified material includes high purity silane coupling agent or silicon powder, and it is total that the additional amount of the powder surface modification material accounts for the sand material mixture
The 0-10% of weight.The molding retarder include phosphate, alkali borate, borax, boric acid, citric acid and its salt,
One of sodium succinate, ethylhexyldithiophosphoric acid sodium, methyl acid sodium, oxalic acid, protein adhesive, hide glue, silica solution, spent pulping liquor, the molding
The 0-5% of the sand material mixture total weight is accounted for the additional amount of retarder.
S3: the sand material mixture is carried out mixing is sufficiently stirred, and the sand material mixture stirred and evenly mixed is delivered in sandbox
Carry out moulding and consolidation.
S4: the sand material mixture completes molding after self-hardening in the sandbox, to obtain casting mold blank, the mixed sand
Curing time needed for material completes self-hardening in the sandbox is 0-120 minutes.
S5: carrying out post-processing to the casting mold blank, and to obtain casting mold, the post-processing successively includes: repairing type, brush
Coating, mould assembling, hot-air seasoning, casting, knockout, regeneration.
It is provided by the present invention logical from hard molding casting mold processing method based on gypsum sand in above-mentioned specific embodiment
It crosses and is compatible with traditional self-hardening sand production line and equipment progress mulling moulding production.The major advantage of the technology is in following several respects:
1, have the feature of high strength gypsum high intensity, ensure that casting dimension stability is good, precision is high；
2, existing main several self-hardening sand processing lines can be compatible with completely to be produced；
3, moulding production process is simple, flexible, controllable；
4, collapsibility is splendid, especially can solve the problem of sodium silicate sand collapsing hardly possible；
5, solid waste is close to zero-emission, and broken waste material can enter the industries such as cement and make full use of, environmental protection.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. one kind is based on the certainly hard molding casting mold processing method of gypsum sand, which comprises the following steps:
S1: preparing gypsum sand, and the land plaster obtained using high-temperature calcination forms the stone of -140 mesh granularity of 30 mesh by extrusion granulation
Cream sand；
S2: auxiliary material sand, resin, curing agent, molding retarder and the powder of preset ratio are sequentially added in the gypsum sand
Surface active material, to obtain sand material mixture；
S3: the sand material mixture is carried out mixing is sufficiently stirred, and the sand material mixture stirred and evenly mixed is delivered in sandbox and is carried out
Moulding and consolidation；
S4: the sand material mixture completes molding after self-hardening in the sandbox, to obtain casting mold blank；
S5: post-processing is carried out to the casting mold blank, to obtain casting mold.
2. casting mold processing method according to claim 1, which is characterized in that in step s 2, the auxiliary material sand includes treasured
At least one of pearl sand, mullite sand, silica sand, ceramic sand, and the additional amount of the auxiliary material sand accounts for the sand material mixture gross weight
The 0-50% of amount.
3. casting mold processing method according to claim 1, which is characterized in that in step s 2, the resin is organic tree
Rouge or inorganic adhesive, the additional amount of the resin account for the 1-10% of the sand material mixture total weight.
4. casting mold processing method according to claim 1, which is characterized in that in step s 2, the powder surface modification
Material includes high purity silane coupling agent or silicon powder, and the additional amount of the powder surface modification material accounts for the sand material mixture total weight
0-10%.
5. casting mold processing method according to claim 1, which is characterized in that in step s 2, retarder is used in the molding
Including phosphate, alkali borate, borax, boric acid, citric acid and its salt, sodium succinate, ethylhexyldithiophosphoric acid sodium, methyl acid sodium, grass
The additional amount of one of acid, protein adhesive, hide glue, silica solution, spent pulping liquor, molding retarder accounts for the sand material mixture
The 0-5% of total weight.
6. casting mold processing method according to claim 1, which is characterized in that in step s 4, the sand material mixture is in institute
Stating curing time needed for completing self-hardening in sandbox is 0-120 minutes.
7. casting mold processing method according to claim 1, which is characterized in that in step s 5, the post-processing is successively
It include: repairing type, swabbing, mould assembling, hot-air seasoning, casting, knockout, regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721283.1A CN110526616A (en) | 2019-08-06 | 2019-08-06 | One kind is based on the certainly hard molding casting mold processing method of gypsum sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721283.1A CN110526616A (en) | 2019-08-06 | 2019-08-06 | One kind is based on the certainly hard molding casting mold processing method of gypsum sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110526616A true CN110526616A (en) | 2019-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910721283.1A Pending CN110526616A (en) | 2019-08-06 | 2019-08-06 | One kind is based on the certainly hard molding casting mold processing method of gypsum sand |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB816961A (en) * | 1955-08-19 | 1959-07-22 | Morris Bean & Company | Casting method and apparatus |
| CN102531513A (en) * | 2011-12-28 | 2012-07-04 | 刘立文 | Ceramic-reinforced tyre casting gypsum powder and preparation process thereof |
| CN105110751A (en) * | 2015-08-29 | 2015-12-02 | 湖北凯浩鹿宝石膏科技有限公司 | Gypsum used for modified jewelry casting and preparation method of gypsum |
| CN105834351A (en) * | 2016-04-15 | 2016-08-10 | 厦门三维天空信息科技有限公司 | High-temperature resistant casting mold material |
| CN106040962A (en) * | 2016-07-29 | 2016-10-26 | 无锡市三峰仪器设备有限公司 | Instrument casting resin sand enhanced by alkali free glass fibers |
-
2019
- 2019-08-06 CN CN201910721283.1A patent/CN110526616A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB816961A (en) * | 1955-08-19 | 1959-07-22 | Morris Bean & Company | Casting method and apparatus |
| CN102531513A (en) * | 2011-12-28 | 2012-07-04 | 刘立文 | Ceramic-reinforced tyre casting gypsum powder and preparation process thereof |
| CN105110751A (en) * | 2015-08-29 | 2015-12-02 | 湖北凯浩鹿宝石膏科技有限公司 | Gypsum used for modified jewelry casting and preparation method of gypsum |
| CN105834351A (en) * | 2016-04-15 | 2016-08-10 | 厦门三维天空信息科技有限公司 | High-temperature resistant casting mold material |
| CN106040962A (en) * | 2016-07-29 | 2016-10-26 | 无锡市三峰仪器设备有限公司 | Instrument casting resin sand enhanced by alkali free glass fibers |
Non-Patent Citations (1)
| Title |
|---|
| 于占玮: "石膏模型的制作方法", 《模具制造技术》 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191203 |
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| RJ01 | Rejection of invention patent application after publication |