CN107774887A - A kind of Antistatic resin sand preparation technology - Google Patents
A kind of Antistatic resin sand preparation technology Download PDFInfo
- Publication number
- CN107774887A CN107774887A CN201610729008.0A CN201610729008A CN107774887A CN 107774887 A CN107774887 A CN 107774887A CN 201610729008 A CN201610729008 A CN 201610729008A CN 107774887 A CN107774887 A CN 107774887A
- Authority
- CN
- China
- Prior art keywords
- parts
- lauxite
- antistatic
- grain
- resin sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a kind of Antistatic resin sand preparation technology, including synthesis Lauxite, kneading process, drying process, pulverizing process, ball milling and sieve powder, granulating working procedure and whole grain process, mixing, packaging and other steps.Anlistatig resin sand provided by the present invention and preparation method thereof, there is antistatic effect, and reached the requirements of airframe surface treatment, particularly need not spray antistatic liquid to resin sand in use.
Description
Technical field
The invention belongs to casting technology field, and in particular to a kind of Antistatic resin sand preparation technology.
Background technology
Airframe surface is due to its particularity, it is necessary to there is the function of antistatic, and the method generally used in the world is
Antistatic liquid is sprayed in resin sand, causes sand surface that there is antistatic effect, reaching body surface has anlistatig work(
Energy；But a trouble is also brought, i.e., need to repeat to spray antistatic liquid when resin sand is reused, not only each use will increase
Add material and cost of labor, and to increase readiness time.
The content of the invention
In order to overcome above mentioned problem existing for prior art, it is an object of the present invention to provide a kind of antistatic tree
Fat sand preparation technology, there is antistatic effect in the resin sand that can make finally to be processed into, and reached at airframe surface
The requirements of reason, particularly antistatic liquid need not be sprayed to resin sand in use.
A kind of Antistatic resin sand preparation technology provided by the invention, comprises the following steps：
1) Lauxite is synthesized：Prepare urea 250-290 parts, formaldehyde 470-530 by the weight proportion of recipe requirements
Part, methenamine 17-28 parts.First disposably put into formaldehyde 340-530 parts of recipe requirements amount and start stirring, then
Methenamine 17-25 parts are put into, until methenamine is completely dissolved, PH values are surveyed, in PH>Disposably put into after 7.5
The urea of 250-270 parts continues stirring until dissolving, reacts 55-65min, synthesis Lauxite at 59 DEG C -65 DEG C；
2) kneading process：By 1）The Lauxite of middle synthesis is progressively banished into kneader by pipeline, and disposable add is matched somebody with somebody
Filler, color masterbatch, curing agent, titanium dioxide, releasing agent, antistatic additive and the plasticizer of square required amount, single direction stirring 15-
30min, make Lauxite, filler and various auxiliary materials and after antistatic additive is sufficiently mixed and disperses, opposite direction is again stirring for above-mentioned
It has been sufficiently mixed and each material for disperseing and has been dehydrated 35-50min at 66-77 DEG C simultaneously；
3) drying process：Material after dehydration is 55-70 DEG C in temperature, and 25- is pre-processed under conditions of thickness of feed layer≤5cm
29 minutes, the bed of material, which is realized, to be turned over, and temperature gradually rises to 91-95 DEG C of progress dry materials 77-87 minute, and the bed of material is realized second
Turn over, be progressively segmented through 35-50 minutes under the conditions of 67-85 DEG C and be cooled to normal temperature；
4) pulverizing process：Material after drying process crushes under 3600 revs/min of crushing speed is less than 1mm for diameter
Irregular coarse powder material；
5) ball milling and screening：Coarse powder material is 29-35 revs/min in rotational speed of ball-mill and material ball ratio is 1:Ball milling 6-8 under conditions of 2
Hour, ball milling is diameter<The spherical fine powder of 76 purposes；
6) granulating working procedure and whole grain process：Step 5）In spherical fine powder by mechanical means roughing be irregular piece,
Bar or grain, piece, bar or grain after roughing are further through crushing with whole grain into the material containing certain powder ratio；
7) mix, pack：The thing grain identical to model, performance is consistent mixed, it is dispersed 2 hours after pack.
Embodiment
With reference to embodiment, to a kind of Antistatic resin sand preparation technology provided by the invention, it is described in detail.
Embodiment
A kind of Antistatic resin sand preparation technology of the present embodiment, comprises the following steps：
1) Lauxite is synthesized：Prepare 280 parts of urea, 490 parts of formaldehyde, 27 parts of methenamine by the weight proportion of recipe requirements.
First disposably put into 430 parts of the formaldehyde of recipe requirements amount and start stirring, then put into 19 parts of methenamine, until methenamine
It is completely dissolved, PH values is surveyed, in PH>The urea of disposable 270 parts of input continues stirring until dissolving, at 65 DEG C after 7.5
55min is reacted, synthesizes Lauxite；
2) kneading process：By 1）The Lauxite of middle synthesis is progressively banished into kneader by pipeline, and disposable add is matched somebody with somebody
Filler, color masterbatch, curing agent, titanium dioxide, releasing agent, antistatic additive and the plasticizer of square required amount, single direction stirring
19min, make Lauxite, filler and various auxiliary materials and after antistatic additive is sufficiently mixed and disperses, opposite direction is again stirring for above-mentioned
It has been sufficiently mixed and each material for disperseing and has been dehydrated 39min at 77 DEG C simultaneously；
3) drying process：Material after dehydration is 59 DEG C in temperature, is pre-processed 29 minutes under conditions of thickness of feed layer≤5cm,
The bed of material, which is realized, to be turned over, and temperature gradually rises to 91 DEG C and carries out dry materials 77 minutes, and the bed of material is realized second and turned over, 85 DEG C of conditions
Lower be progressively segmented through 35 minutes is cooled to normal temperature；
4) pulverizing process：Material after drying process crushes under 3600 revs/min of crushing speed is less than 1mm for diameter
Irregular coarse powder material；
5) ball milling and screening：Coarse powder material is 29 revs/min in rotational speed of ball-mill and material ball ratio is 1:Ball milling 8 hours, ball under conditions of 2
Grind as diameter<The spherical fine powder of 76 purposes；
6) granulating working procedure and whole grain process：Step 5）In spherical fine powder by mechanical means roughing be irregular piece, bar
Or grain, piece, bar or grain after roughing are further through crushing with whole grain into the material containing certain powder ratio；
7) mix, pack：The thing grain identical to model, performance is consistent mixed, it is dispersed 2 hours after pack.
Claims (1)
- A kind of 1. Antistatic resin sand preparation technology, it is characterised in that：Comprise the following steps：1) Lauxite is synthesized：Prepare urea 250-290 parts, formaldehyde 470-530 parts, Wu Luotuo by the weight proportion of recipe requirements Product 17-28 parts, first disposably put into formaldehyde 340-530 parts of recipe requirements amount and start stirring, then put into methenamine 17-25 parts, until methenamine is completely dissolved, PH values are surveyed, in PH>7.5 the urine of rear disposable input 250-270 parts Element continues stirring until dissolving, reacts 55-65min, synthesis Lauxite at 59 DEG C -65 DEG C；2) kneading process：By 1）The Lauxite of middle synthesis is progressively banished into kneader by pipeline, and disposable add is matched somebody with somebody Filler, color masterbatch, curing agent, titanium dioxide, releasing agent, antistatic additive and the plasticizer of square required amount, single direction stirring 15- 30min, make Lauxite, filler and various auxiliary materials and after antistatic additive is sufficiently mixed and disperses, opposite direction is again stirring for above-mentioned It has been sufficiently mixed and each material for disperseing and has been dehydrated 35-50min at 66-77 DEG C simultaneously；3) drying process：Material after dehydration is 55-70 DEG C in temperature, and 25- is pre-processed under conditions of thickness of feed layer≤5cm 29 minutes, the bed of material, which is realized, to be turned over, and temperature gradually rises to 91-95 DEG C of progress dry materials 77-87 minute, and the bed of material is realized second Turn over, be progressively segmented through 35-50 minutes under the conditions of 67-85 DEG C and be cooled to normal temperature；4) pulverizing process：Material after drying process crushes under 3600 revs/min of crushing speed is less than 1mm for diameter Irregular coarse powder material；5) ball milling and screening：Coarse powder material is 29-35 revs/min in rotational speed of ball-mill and material ball ratio is 1:Ball milling 6-8 is small under conditions of 2 When, ball milling is diameter<The spherical fine powder of 76 purposes；6) granulating working procedure and whole grain process：Step 5）In spherical fine powder by mechanical means roughing be irregular piece, Bar or grain, piece, bar or grain after roughing are further through crushing with whole grain into the material containing certain powder ratio；7) mix, pack：The thing grain identical to model, performance is consistent mixed, it is dispersed 2 hours after pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729008.0A CN107774887A (en) | 2016-08-26 | 2016-08-26 | A kind of Antistatic resin sand preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729008.0A CN107774887A (en) | 2016-08-26 | 2016-08-26 | A kind of Antistatic resin sand preparation technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107774887A true CN107774887A (en) | 2018-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610729008.0A Pending CN107774887A (en) | 2016-08-26 | 2016-08-26 | A kind of Antistatic resin sand preparation technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN107774887A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526385A (en) * | 2018-04-12 | 2018-09-14 | 盐城仁创砂业科技有限公司 | A kind of elimination electrostatic precoated sand and preparation method thereof |
-
2016
- 2016-08-26 CN CN201610729008.0A patent/CN107774887A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526385A (en) * | 2018-04-12 | 2018-09-14 | 盐城仁创砂业科技有限公司 | A kind of elimination electrostatic precoated sand and preparation method thereof |
| CN108526385B (en) * | 2018-04-12 | 2019-11-01 | 盐城仁创砂业科技有限公司 | A kind of elimination electrostatic precoated sand and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |