CN104985110A - Preparation method for coating for aluminium alloy squeeze casting - Google Patents
Preparation method for coating for aluminium alloy squeeze casting Download PDFInfo
- Publication number
- CN104985110A CN104985110A CN201510433584.6A CN201510433584A CN104985110A CN 104985110 A CN104985110 A CN 104985110A CN 201510433584 A CN201510433584 A CN 201510433584A CN 104985110 A CN104985110 A CN 104985110A
- Authority
- CN
- China
- Prior art keywords
- mixed
- preparation
- aluminium alloy
- coating
- slurries
- 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.)
- Pending
Links
Abstract
The invention relates to a preparation method for a coating for aluminium alloy squeeze casting. According to the preparation method, talcum powder and diatomite are taken as refractory aggregate, aluminium phosphate is taken as a binding agent, xanthan gum and bentonite are taken as suspending agents, deionized water is taken as a carrier liquid solvent, and the coating for aluminium alloy squeeze casting is prepared through solution preparation, slurry mixing, stirring, rolling compaction and aging. The coating is viscous liquid, has high binding power, a high uniformity degree and a high fixation degree, and reaches the gas-forming property of 6.12mL/g, the heat conduction coefficient of 0.4,096W*m<-1>*K<-1> and the suspension rate of 99%. The preparation method is technologically advanced, has a short technological process, is high in speed, full and accurate in data and reasonable in material matching, and is an ideal preparation method for the coating for aluminium alloy squeeze casting.
Description
Technical field
The present invention relates to a kind of preparation method of aluminium alloy extrusion casting coating, belong to the technical field of the preparations and applicatio of non-ferrous metals casting auxiliary material.
Background technology
Extrusion casint is the casting technique of a kind of advanced person, and especially the extrusion casint of non-ferrous metal aluminium alloy is most widely used, and in machine-building, auto industry, aerospace industry, the shaping of special-shaped part mostly uses extrusion casint.
Metal mold in the extrusion casint of non-ferrous metal aluminium alloy must use coating, to ensure the smooth and easy demoulding after die cast in extrusion process, better to ensure the shape of foundry goods, metal uniformity and product quality.
At present, the coating used in non-ferrous metal aluminium alloy extrusion casting is the gluey graphite paint of aqueous colloidal graphite paint and oil base, these coating have certain lubricity, can meet requirement to demolding performace in casting, but in the heat insulating ability of material, gas-forming property, thixotropic property existing defects; The height of mold temperature in extrusion process, by the service life of the performance and casting mold that directly affect foundry goods, this just requires that coating has good intensity and adhesive property at a suitable temperature, also requires that the heat-insulating property of coating can control the cooling velocity of molten metal simultaneously; The coating of current use is difficult to meet these technical requirements.
Summary of the invention
Goal of the invention
The object of the invention is the not enough situation for background technology, with talcum powder, diatomite for refractory aggregate, aluminum phosphate is binding agent, xanthans and bentonite is suspending agent, deionized water is carrier fluid solvent, be configured mixed to starch, stir, roll, ageing, make thick coating, to increase substantially the performance of non-ferrous metal aluminium alloy extrusion casting coating.
Technical scheme
The chemical substance material that the present invention uses is: talcum powder, diatomite, aluminum phosphate, xanthans, bentonite, deionized water, and it is as follows that its combination prepares consumption: with gram, milliliter for measurement unit
Talcum powder: Mg
3[Si
4o
10] (OH)
2200g ± 1g
Diatomite: SiO
2800g ± 1g
Aluminum phosphate: AlPO
450g ± 1g
Xanthans: C
35h
49o
293g ± 0.1g
Bentonite: Na
0.33(Al, Mg, Fe)
2[(Si, Al)
4o
10] (OH)
24H
2o 10g ± 0.1g
Deionized water: H
2o 3000mL ± 50mL
Preparation method is as follows
(1) selected chemical substance material
To carry out selected to the chemical substance material that preparation uses, and carry out quality purity control:
Talcum powder: solid powder 95%
Diatomite: solid powder 92.3%
Aluminum phosphate: solid powder 97%
Xanthans: solid powder 98%
Bentonite: solid powder 90%
Deionized water: liquid liquid, 99.9%
(2) xanthan gum solution is configured
Take xanthans 3g ± 0.1g, measure deionized water 300mL ± 10mL, add in beaker, mix and blend 30min, become the xanthan gum solution of 0.0107mol/L;
(3) bentonite solution is configured
Take bentonite 10g ± 0.1g, measure deionized water 300mL ± 10mL, add in beaker, mix and blend 30min, become the bentonite solution of 0.0471mol/L;
(4) mixed slurry
Take talcum powder 200g ± 1g, diatomite 800g ± 1g, aluminum phosphate 50g ± 1g; Measure xanthan gum solution 300mL, bentonite solution 300mL; Measure deionized water 400mL; Join in mixing hollander; Open mixing hollander, mixing hollander revolution is 60r/min, and the chemical substance in mixing hollander is mixed, and becomes mixed slurries;
(5) mixed slurries are rolled
Roll mixed slurries to carry out on roller, complete rolling, in the process that adds water;
1. mixed slurries are placed in the slurry tank of roller;
2. the inlet of slurry tank is opened, the mixed slurries of input in roller; Mixed slurries input speed 4mL/min;
3. open roller, roll, roll revolution 36r/min, roll pressure 1.6Mpa;
4. carry out rolling circulation in roller compaction process, rolling cycle-index is 8 times, rolls the thick slurries of rear one-tenth;
(6) still aging
Be collected in rustless steel container by the thick slurries after rolling, still aging 24h at 25 DEG C, is aluminium alloy extrusion casting coating after ageing;
(7) detect, analyze, characterize
The pattern of aluminium alloy extrusion casting coating of preparation, color and luster, composition, Chemical Physics performance are detected, analyze, characterized;
The gas-forming property analysis of coating is carried out with GET-3 intelligence gas-forming property analyzer;
The heat-insulating property analysis of coating is carried out with heat-insulating property analyzer;
Suspensibility analysis is carried out with the tool plug graduated cylinder of Φ 25mm × 100mL;
Conclusion: aluminium alloy extrusion casting coating is thick white shape slurries, and gas-forming property is 6.12mL/g, and thermal conductivity factor is 0.4096Wm
-1k
-1, suspensibility is 99%;
(8) slurry storage
Preparation thick slurry storage in metal drum ladle, sealed storage, prevent fires, sun-proof, moistureproof, anti-acid-alkali salt erosion, be stored in shady and cool clean environment, storage temperature 25 DEG C, relative humidity≤20%.
Beneficial effect
The present invention has obvious advance compared with background technology, for refractory aggregate with talcum powder, diatomite, aluminum phosphate is binding agent, and xanthans, bentonite are suspending agent, and deionized water is carrier fluid solvent, be configured solution, mixed starch, stir, roll, ageing, make aluminium alloy extrusion casting coating, coating is viscous liquid, and cohesive force is strong, good evenness, degree of fixation are good, gas-forming property is 6.12mL/g, and thermal conductivity factor is 0.4096Wm
-1k
-1, suspensibility is 99%, and this preparation method's technique is advanced, and technological process is short, and speed is fast, and data are accurately full and accurate, and material mixture ratio is reasonable, is the preparation method of very good aluminium alloy extrusion casting coating.
Accompanying drawing explanation
Fig. 1 aluminium alloy extrusion casting coating roll state diagram
Fig. 2 aluminium alloy extrusion casting coating microscopic appearance figure
Shown in figure, list of numerals is as follows:
1, console, 2, display screen, 3, indicator lamp, 4, power switch, 5, motor modulator is rolled, 6, lower mill disc, 7, upper mill disc, 8, motor is rolled, 9, mixed stock tank, 10, mixed stock tank lid, 11, tank, 12, sink cover, 13, feeding cylinder, 14, control slurry valve, 15, water control valve, 16, drain pipe, 17, product case, 18, mixed slurries, 19, deionized water.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
Shown in Fig. 1, roll state diagram for aluminium alloy extrusion casting coating, each position wants correct, and proportioning according to quantity, operates according to the order of sequence.
The value of the chemical substance that preparation uses determines by the scope pre-set, with gram, milliliter for measurement unit.
Aluminium alloy extrusion casting coating mixes rolling of slurries to carry out on roller, completes rolling, in the process that adds water;
Roller is vertical, the bottom of roller is console 1, be lower mill disc 6 on the top of console 1, mill disc 7 on the top of lower mill disc 6 is, the top of upper mill disc 7 connects rolls motor 8, mixed stock tank 9 is provided with on the top of rolling motor 8, mixed stock tank 9 top is mixed stock tank lid 10, and the top of mixed stock tank lid 10 is tank 11, and tank 11 top is sink cover 12, being mixed slurries 18 in mixed stock tank 9, is deionized water 19 in tank 11; Centre position in upper mill disc 7, mixed stock tank 9, tank 11 is provided with feeding cylinder 13, and feeding cylinder 13 is through the centre position of rolling motor 8; Feeding cylinder 13 is provided with water control valve 15, control slurry valve 14, and water control valve 15 regulates and controls the flow of deionized water 19, and control slurry valve 14 regulates and controls the flow of mixed slurries 18; Be provided with drain pipe 16 at the right lower quadrant of lower mill disc 6, drain pipe 16 connects product case 17; Console 1 is provided with display screen 2, indicator lamp 3, power switch 4, rolls motor modulator 5.
Shown in Fig. 2, be aluminium alloy extrusion casting coating microscopic appearance figure, shown in figure, bentonite, aluminum phosphate are evenly distributed on diatomite and talcum powder surface, and the composition of coating each several part is uniform and stable.
Claims (2)
1. the preparation method of an aluminium alloy extrusion casting coating, it is characterized in that: the chemical substance material of use is: talcum powder, diatomite, aluminum phosphate, xanthans, bentonite, deionized water, it is as follows that its combination prepares consumption: with gram, milliliter for measurement unit
Talcum powder: Mg
3[Si
4o
10] (OH)
2200g ± 1g
Diatomite: SiO
2800g ± 1g
Aluminum phosphate: AlPO
450g ± 1g
Xanthans: C
35h
49o
293g ± 0.1g
Bentonite: Na
0.33(Al, Mg, Fe)
2[(Si, Al)
4o
10] (OH)
24H
2o 10g ± 0.1g
Deionized water: H
2o 3000mL ± 50mL
Preparation method is as follows
(1) selected chemical substance material
To carry out selected to the chemical substance material that preparation uses, and carry out quality purity control:
Talcum powder: solid powder 95%
Diatomite: solid powder 92.3%
Aluminum phosphate: solid powder 97%
Xanthans: solid powder 98%
Bentonite: solid powder 90%
Deionized water: liquid liquid, 99.9%
(2) xanthan gum solution is configured
Take xanthans 3g ± 0.1g, measure deionized water 300mL ± 10mL, add in beaker, mix and blend 30min, become the xanthan gum solution of 0.0107mol/L;
(3) bentonite solution is configured
Take bentonite 10g ± 0.1g, measure deionized water 300mL ± 10mL, add in beaker, mix and blend 30min, become the bentonite solution of 0.0471mol/L;
(4) mixed slurry
Take talcum powder 200g ± 1g, diatomite 800g ± 1g, aluminum phosphate 50g ± 1g; Measure xanthan gum solution 300mL, bentonite solution 300mL; Measure deionized water 400mL; Join in mixing hollander; Open mixing hollander, mixing hollander revolution is 60r/min, and the chemical substance in mixing hollander is mixed, and becomes mixed slurries;
(5) mixed slurries are rolled
Roll mixed slurries to carry out on roller, complete rolling, in the process that adds water;
1. mixed slurries are placed in the slurry tank of roller;
2. the inlet of slurry tank is opened, the mixed slurries of input in roller; Mixed slurries input speed 4mL/min;
3. open roller, roll, roll revolution 36r/min, roll pressure 1.6Mpa;
4. carry out rolling circulation in roller compaction process, rolling cycle-index is 8 times, rolls the thick slurries of rear one-tenth;
(6) still aging
Be collected in rustless steel container by the thick slurries after rolling, still aging 24h at 25 DEG C, is aluminium alloy extrusion casting coating after ageing;
(7) detect, analyze, characterize
The pattern of aluminium alloy extrusion casting coating of preparation, color and luster, composition, Chemical Physics performance are detected, analyze, characterized;
The gas-forming property analysis of coating is carried out with GET-3 intelligence gas-forming property analyzer;
The heat-insulating property analysis of coating is carried out with heat-insulating property analyzer;
Suspensibility analysis is carried out with the tool plug graduated cylinder of Φ 25mm × 100mL;
Conclusion: aluminium alloy extrusion casting coating is thick white shape slurries, and gas-forming property is 6.12mL/g, and thermal conductivity factor is 0.4096Wm
-1k
-1, suspensibility is 99%;
(8) slurry storage
The thick slurry storage of preparation is in metal drum ladle, and sealed storage, prevent fires, the erosion such as sun-proof, moistureproof, anti-hydrochlorate, is stored in shady and cool clean environment, storage temperature 25 DEG C, relative humidity≤20%.
2. the preparation method of a kind of aluminium alloy extrusion casting coating according to claim 1, is characterized in that: aluminium alloy extrusion casting coating mixes rolling of slurries to carry out on roller, completes rolling, in the process that adds water;
Roller is vertical, the bottom of roller is console (1), be lower mill disc (6) on the top of console (1), upper mill disc (7) on the top of lower mill disc (6), the top of upper mill disc (7) connects rolls motor (8), mixed stock tank (9) is provided with on the top of rolling motor (8), mixed stock tank (9) top is mixed stock tank lid (10), the top of mixed stock tank lid (10) is tank (11), tank (11) top is sink cover (12), be mixed slurries (18) in mixed stock tank (9), be deionized water (19) in tank (11), centre position in upper mill disc (7), mixed stock tank (9), tank (11) is provided with feeding cylinder (13), and feeding cylinder (13) is through the centre position of rolling motor (8), feeding cylinder (13) is provided with water control valve (15), control slurry valve (14), the flow of water control valve (15) regulation and control deionized water (19), the flow of the mixed slurries (18) of control slurry valve (14) regulation and control, be provided with drain pipe (16) at the right lower quadrant of lower mill disc (6), drain pipe (16) connects product case (17), console (1) is provided with display screen (2), indicator lamp (3), power switch (4), rolls motor modulator (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510433584.6A CN104985110A (en) | 2015-07-22 | 2015-07-22 | Preparation method for coating for aluminium alloy squeeze casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510433584.6A CN104985110A (en) | 2015-07-22 | 2015-07-22 | Preparation method for coating for aluminium alloy squeeze casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104985110A true CN104985110A (en) | 2015-10-21 |
Family
ID=54297070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510433584.6A Pending CN104985110A (en) | 2015-07-22 | 2015-07-22 | Preparation method for coating for aluminium alloy squeeze casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104985110A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458162A (en) * | 2015-11-30 | 2016-04-06 | 中北大学 | Rapid preparing method for coating for gray iron metal mold casting |
| CN105583356A (en) * | 2016-01-19 | 2016-05-18 | 中北大学 | Preparation method of coating for casting magnesium alloy lost foam |
| CN108907072A (en) * | 2018-05-22 | 2018-11-30 | 六安市叶集区鑫瑞金属制品有限责任公司 | A kind of refractory metal casting mold-releasing agent and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773980A (en) * | 2010-02-19 | 2010-07-14 | 南通爱尔思轻合金精密成型有限公司 | Alcohol group mold wash used for low-pressure casting of aluminum alloy sand mold and coating process thereof |
| CN102886488A (en) * | 2012-07-20 | 2013-01-23 | 中北大学 | Method for quickly preparing metal centrifugal casting coating |
| JP2014073504A (en) * | 2012-10-02 | 2014-04-24 | Okazaki Huttenes-Albertus Chemicals Co Ltd | Mold wash for casting |
| CN103752763A (en) * | 2011-12-05 | 2014-04-30 | 陈琼花 | Magnesium alloy metal casting coating and preparation method thereof |
| CN104550677A (en) * | 2014-12-16 | 2015-04-29 | 世林（漯河）冶金设备有限公司 | Cast iron evanescent mode paint and preparation method thereof |
-
2015
- 2015-07-22 CN CN201510433584.6A patent/CN104985110A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773980A (en) * | 2010-02-19 | 2010-07-14 | 南通爱尔思轻合金精密成型有限公司 | Alcohol group mold wash used for low-pressure casting of aluminum alloy sand mold and coating process thereof |
| CN103752763A (en) * | 2011-12-05 | 2014-04-30 | 陈琼花 | Magnesium alloy metal casting coating and preparation method thereof |
| CN102886488A (en) * | 2012-07-20 | 2013-01-23 | 中北大学 | Method for quickly preparing metal centrifugal casting coating |
| JP2014073504A (en) * | 2012-10-02 | 2014-04-24 | Okazaki Huttenes-Albertus Chemicals Co Ltd | Mold wash for casting |
| CN104550677A (en) * | 2014-12-16 | 2015-04-29 | 世林（漯河）冶金设备有限公司 | Cast iron evanescent mode paint and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王广太，郭广思: "铝合金消失模铸造涂料的研究", 《特种铸造及有色合金》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458162A (en) * | 2015-11-30 | 2016-04-06 | 中北大学 | Rapid preparing method for coating for gray iron metal mold casting |
| CN105583356A (en) * | 2016-01-19 | 2016-05-18 | 中北大学 | Preparation method of coating for casting magnesium alloy lost foam |
| CN108907072A (en) * | 2018-05-22 | 2018-11-30 | 六安市叶集区鑫瑞金属制品有限责任公司 | A kind of refractory metal casting mold-releasing agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108060321B (en) | A kind of preparation method of graphene reinforced aluminum matrix composites | |
| CN109402442A (en) | A kind of die casting preparation method of graphene reinforced aluminum matrix composites | |
| CN104985110A (en) | Preparation method for coating for aluminium alloy squeeze casting | |
| CN102145372B (en) | Coating for metal mold casting of aluminum alloy thin-walled piece and preparation method and coating method thereof | |
| CN103898351A (en) | High-efficiency continuous casting method of structure-controllable closed cell foam aluminum ingot | |
| CN1994622A (en) | Slurrying-forming separated aluminium alloy rheological forming method | |
| CN102886488B (en) | Method for quickly preparing metal centrifugal casting coating | |
| CN103014387A (en) | Preparation method of magnesium base composite doped with SiC grains | |
| CN105583356A (en) | Preparation method of coating for casting magnesium alloy lost foam | |
| CN101147968B (en) | Low-temperature shearing rheological die casting technology | |
| CN105458162A (en) | Rapid preparing method for coating for gray iron metal mold casting | |
| CN108067600A (en) | A kind of reho-forming method of high efficiency, low cost manufacture semisolid Al-Si line aluminium alloy casting | |
| CN102266914B (en) | Method for preparing semisolid alloy slurry | |
| CN102873262B (en) | Lost foam coating and preparation method thereof | |
| CN106391996A (en) | Preparation method of coating for aluminum alloy lost-foam casting | |
| CN107138708A (en) | Integrated die forging process | |
| CN204621035U (en) | Electromagnetism crystallization agitating device | |
| CN201625773U (en) | Device for preparing semi-solid alloy rheological slurries or blanks | |
| CN103100659B (en) | Metal mold release agent and preparation method thereof | |
| CN109371273A (en) | A kind of die casting preparation method of graphene enhancing magnesium-based composite material | |
| CN103952598B (en) | A kind of service life length aluminium alloy car sheet material | |
| CN202779647U (en) | Semisolid nonferrous metal continuous casting device | |
| CN203124674U (en) | Automobile wheel semisolid rheoforming slurrying equipment | |
| CN103170606B (en) | Dual pressure homogenising is prepared the device of metal paste and shapes method | |
| CN2745672Y (en) | Device for continuously preparing semisolid state metal slurry by compound electromagnetic stirring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151021 |
|
| RJ01 | Rejection of invention patent application after publication |