CN1093383A - Metal type coating series - Google Patents
Metal type coating series Download PDFInfo
- Publication number
- CN1093383A CN1093383A CN 94104236 CN94104236A CN1093383A CN 1093383 A CN1093383 A CN 1093383A CN 94104236 CN94104236 CN 94104236 CN 94104236 A CN94104236 A CN 94104236A CN 1093383 A CN1093383 A CN 1093383A
- Authority
- CN
- China
- Prior art keywords
- coating
- water
- raw materials
- particle size
- silica sol
- 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.)
- Granted
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- 238000000576 coating method Methods 0.000 title claims abstract description 86
- 239000011248 coating agent Substances 0.000 title claims abstract description 79
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010445 mica Substances 0.000 claims abstract description 11
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 229910001919 chlorite Inorganic materials 0.000 claims abstract description 6
- 229910052619 chlorite group Inorganic materials 0.000 claims abstract description 6
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002344 surface layer Substances 0.000 claims abstract 3
- 239000002994 raw material Substances 0.000 claims description 16
- 239000003973 paint Substances 0.000 claims description 14
- 239000004927 clay Substances 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 8
- 239000000084 colloidal system Substances 0.000 claims 3
- 239000002002 slurry Substances 0.000 claims 3
- 229910001570 bauxite Inorganic materials 0.000 claims 2
- 239000008199 coating composition Substances 0.000 claims 2
- 229920006395 saturated elastomer Polymers 0.000 claims 2
- 238000005096 rolling process Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 15
- 238000001816 cooling Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 2
- 230000003031 feeding effect Effects 0.000 abstract description 2
- 239000005909 Kieselgur Substances 0.000 abstract 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract 1
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000002987 primer (paints) Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 230000003746 surface roughness Effects 0.000 abstract 1
- 230000037452 priming Effects 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 241000353097 Molva molva Species 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000007607 die coating method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 230000010165 autogamy Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010120 permanent mold casting Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
- Paints Or Removers (AREA)
Abstract
金属型系列涂料，包括底层涂料、型腔绝热涂料、 冒口保温涂料和面层导热涂料，分别由绿泥石、铝矾 土、云母粉、硅藻土、石墨、累托石、水玻璃、硅溶胶等 和适量的水配制而成，具良好的悬浮性和涂敷性。四 种涂料配合使用具有明显的调节铸件冷却速度作用 和提高冒口的补缩效果，润滑性良好，便于抽芯和铸 件出型；附着强度高、使用寿命长，可使铝合金铸件表 面粗糙度达Ra3.2～12.5μm。Metal type series coatings, including primer coatings, cavity insulation coatings, Riser thermal insulation coating and surface layer thermal conductivity coating are respectively made of chlorite, aluminum alum Soil, mica powder, diatomaceous earth, graphite, rectorite, water glass, silica sol, etc. Prepared with an appropriate amount of water, it has good suspending and coating properties. Four The combination of these coatings can significantly adjust the cooling speed of castings And improve the feeding effect of the riser, good lubricity, easy for core pulling and casting Parts out of shape; high adhesion strength, long service life, can make the surface of aluminum alloy castings The surface roughness reaches Ra3.2～12.5μm.
Description
The invention belongs to mo(U)ld face coated component selection in the casting and molding technology, the semipermanent that is used for metal mold coating series is provided.
Metal mold belongs to the Special Processes of Metal Castings technology in the casting field, is widely used in aluminum casting production.This processing requirement has coating to be separated by between metal mold type wall and cast(ing) surface, to play the protective money genotype, to regulate casting solidification speed, is convenient to effects such as foundry goods off-type.Commercial coating series, the Dycote coating series developed of Foseco company for example be widely used in during the permanent mold casting of aluminum casting and low-pressure casting produce in states such as English, U.S., methods already, but its prescription is not seen open report.In China, owing to there is not the serial marketed coating of excellent property, each producer all is that autogamy is personal, and the coating that is used to produce is at present summarized and mainly contained three classes: 1, asbestos powder thermal insulation coatings generally is used in brushing technology, though heat insulation effect is preferably arranged, but its hot brushing property is bad, and tack is not strong, and working life is short, asbestos powder needs pre-treatment, and there is harm at the dawn to human body; 2, zinc oxide coating generally is used in spraying coating process, because zinc oxide and water glass effect in its prescription causes coating suspension poor, perishable inefficacy, staging life, is short, and working life is not long, its oilness is also poor, and is complicated or be embedded with the metal mold of getting deeply stuck in iron core for external form, the open form difficulty of loosing core; 3, the Graphite Powder 99 water paint is used in impregnation technology more, and this clagging is bad, and intensity is very low, poor durability.For less demanding aluminum casting, adopt above-mentioned coating still can meet the demands,, overcome the shortcoming of above-mentioned coating for special that has relatively high expectations then obvious deficiency, become factory and further improved metal mold casting quality and output, and the major technique key that enlarges its range of application.
Purpose of the present invention promptly is the shortcoming that overcomes existing die coating; make the die coating of processing performances such as both having good suspension, screening characteristics and wearing quality; require this coating in the protective money genotype again; regulate casting solidification speed and be convenient to open form aspect such as loose core and be better than existing coating, have good use properties.
For achieving the above object, the present invention adopts special non-metallic material and prescription, makes four kinds of basic coating: priming paint, die cavity adiabatic coating, riser head heat-preserving coating and top heat-conductive coating.
The priming paint prescription is by weight percentage: chlorite 50～70%, bauxitic clay 15～20%, clay 10～15%, water glass (nNa
2O
mSiO
2) 5～15%, above-mentioned raw materials adds water mill and rolles over pulp.Chlorite granularity 50～28 μ m, bauxitic clay granularity 50～28 μ m, modulus of water glass 2.5～3.0, raw material drop into when mill is rolled in colloidal mill or the ball mill, and the add-on of water makes the viscosity controller of coating between 15～25 seconds.
Die cavity adiabatic coating prescription is by weight percentage: mica powder 45～65%, diatom ± 15～25%, rectorite leng 5～10%, alkaline silica sol 10～20%.Na
3PO
4Saturated aqueous solution 5～10%, above-mentioned raw materials add water mill and roll over pulp.Mica powder granularity 50～20 μ m, diatomite granularity 50～28 μ m, alkaline silica sol pH value 9～11, raw material drop into when mill is rolled in colloidal mill or the ball mill, and the add-on of water makes the viscosity controller of coating between 15～25 seconds.
The riser head heat-preserving formulation for coating material is by weight percentage: mica powder 45～65%, diatomite 15～25%, rectorite leng 5～10%, acidic silicasol 10～25%, water glass 5～10%, above-mentioned raw materials add water and stir or be rolled into paste.Mica powder granularity 100～63 μ m, diatomite granularity 80～50 μ m, acidic silicasol pH value 2～4, modulus of water glass 2.5～3.0, raw material adopt stirrer or rivet bucker to prepare, and the add-on of water makes coating be paste.
The prescription of top heat-conductive coating is by weight percentage: flake graphite 45～75%, amorphous graphite 5～15%, clay 5～10%, alkaline silica sol 10～20%, Na
3PO
4Saturated aqueous solution 5～10%, above-mentioned raw materials add water mill and roll over into paste.Flake graphite granularity 40～20 μ m, amorphous graphite granularity 40～20 μ m, alkaline silica sol pH value 9～11, raw material drop into when mill is rolled in colloidal mill or the ball mill, and the add-on of water makes the viscosity controller of coating between 15～25 seconds.
Above-mentioned four kinds of coating are used, to reach whole optimization:
1, priming paint and die cavity adiabatic coating and top heat-conductive coating are supporting, to improve the wearing quality of compound coating, make it semipermanentization.Consider the thermal physical characteristic of coating, priming paint has half thermal conductivity, die cavity adiabatic coating tool heat insulating function, top heat-conductive coating has heat conduction and lubrication concurrently, on priming paint, apply the die cavity adiabatic coating like this, and then coating top heat-conductive coating, make and constitute adiabatic compound coating, and on priming paint directly the coating top heat-conductive coating, then constitute the heat conduction compound coating, adopt above-mentioned coating series and adopt composite coating technology, compound coating just has good thermal physical characteristic and off-type, has wearing quality or semipermanent again.
2, riser head heat-preserving coating, die cavity adiabatic coating and top heat-conductive coating are supporting, to play the effect of regulating casting solidification.
Though riser head heat-preserving coating and die cavity adiabatic coating adopt heat preserving aggregate of the same race, the former will make paste and aggregate size is thick partially, is convenient to brush thick and does not trickle, the latter will make pulpous state and be easy to spraying, viscosity is low and suspension good, can realize different sites, the requirement of different degree of insulation.According to of the particular requirement of foundry goods different sites to coating, adopt different heat conductivilitys, the coating of different coating thickness and surfaceness is to reach the purpose of control foundry goods speed of cooling.For example, at the dead head place, apply thicker riser head heat-preserving coating, fill type and feeding capacity with raising, at iron core or the abundant mould nest place of foundry goods, the top heat-conductive coating that spraying is thin to eliminate local shrinkage porosite, obtains sound casting.
Described four kinds of coating have good suspension, screening characteristics; Have the effect of tangible adjusting foundry goods speed of cooling and the feeding effect of raising rising head, have good lubricity, be convenient to loose core and the foundry goods removing from mould; Adhesion strength height, long service life have semipermanent.Use this coating series production aluminum alloy casting surfaceness and can reach Ra23.2～12.5 μ m, than the zinc oxide coating raising secondary of routine, its main performance index reaches the international advanced similar coating property index of Britain Foseco company:
| Priming paint | The die cavity adiabatic coating | Riser head heat-preserving coating | Top heat-conductive coating | |
| Heat transfer coefficient W/m 2·℃ | About 500 (coating 0.15mm) | ＜400 (coating 0.15mm) | ＜160 (coating 0.65mm) | 700 (coatings 0.15) |
| Strength of coating N/mm 2 | 〉4.0 | 〉3.2 | 〉2.5 | 〉1.5 |
| Suspension | 〉90% | 〉90% | Paste | 〉90％ |
| Gas forming amount ml/g | 〈50 | 〈20 | 〈20 | 〈30 |
During the checking of producing, the actual prescription of described coating is:
1, coating is led at the end
Chlorite (50～28 μ m) 60%
Water glass (50～28 μ m) 20%
Clay 10%
Water glass (modulus 2.8) 10%
Water is an amount of
Dope viscosity is that 20sec. adopts No. 4 flow cups (flow cup cavity volume 100ml, discharge orifice φ 4mm) timing.
2, die cavity adiabatic coating
Mica powder (50～28 μ m) 50%
Diatomite (50～28 μ m) 20%
Rectorite leng 5%
Alkaline silica sol (PH=10) 15%
Na
2NO
4Saturated aqueous solution 10%
Water is an amount of
Dope viscosity is 16sec, adopts No. 4 flow cup timing.
3, riser head heat-preserving coating
Mica powder (100～63 μ m) 50%
Diatomite (80～50 μ m) 25%
Acidic silicasol (PH=20) 15%
Rectorite leng 5%
Water glass (modulus 2.8) 10%
Water is an amount of
Coating is paste
4, top heat-conductive coating
Flake graphite (40～28 μ m) 60%
Amorphous graphite (40～20 μ m) 10%
Clay 5%
Alkaline silica sol (PH=10) 15%
Na
3PO
4Saturated aqueous solution 10%
Water is an amount of
Dope viscosity is 16sec, adopts No. 4 flow cup timing.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94104236A CN1045096C (en) | 1994-04-23 | 1994-04-23 | Metallic Primer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94104236A CN1045096C (en) | 1994-04-23 | 1994-04-23 | Metallic Primer |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99116316A Division CN1071162C (en) | 1999-01-18 | 1999-01-18 | Metal type heat-insulation coating |
| CN99116315A Division CN1071161C (en) | 1999-01-18 | 1999-01-18 | Metal-type top heat-conductive coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1093383A true CN1093383A (en) | 1994-10-12 |
| CN1045096C CN1045096C (en) | 1999-09-15 |
Family
ID=5031497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94104236A Expired - Fee Related CN1045096C (en) | 1994-04-23 | 1994-04-23 | Metallic Primer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045096C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439006C (en) * | 2003-08-14 | 2008-12-03 | 律泉精密股份有限公司 | Ultra-high temperature gravity casting method |
| CN100588689C (en) * | 2008-02-22 | 2010-02-10 | 刘�文 | Radiation-resisting composite dope |
| CN101348619B (en) * | 2007-07-18 | 2011-09-28 | 王如贵 | High temperature metallic inorganic coating for labels and preparation thereof |
| CN105713427A (en) * | 2016-03-24 | 2016-06-29 | 叶青 | Coating for metal foil |
| CN105885478A (en) * | 2016-04-28 | 2016-08-24 | 宁国市开源电力耐磨材料有限公司 | Metal surface coating based on silica sol and preparation method thereof |
| CN110064729A (en) * | 2019-05-22 | 2019-07-30 | 惠州市惠阳广杰五金制品有限公司 | Shell membrane manufacture craft |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1009007B (en) * | 1989-02-15 | 1990-08-01 | 航空航天工业部第621研究所 | Protective coating for casting non-ferrous metals and alloys |
| CN1032820C (en) * | 1991-09-24 | 1996-09-18 | 邢台钢铁厂 | Metal-type thermal insulating paint of cast iron |
-
1994
- 1994-04-23 CN CN94104236A patent/CN1045096C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439006C (en) * | 2003-08-14 | 2008-12-03 | 律泉精密股份有限公司 | Ultra-high temperature gravity casting method |
| CN101348619B (en) * | 2007-07-18 | 2011-09-28 | 王如贵 | High temperature metallic inorganic coating for labels and preparation thereof |
| CN100588689C (en) * | 2008-02-22 | 2010-02-10 | 刘�文 | Radiation-resisting composite dope |
| CN105713427A (en) * | 2016-03-24 | 2016-06-29 | 叶青 | Coating for metal foil |
| CN105885478A (en) * | 2016-04-28 | 2016-08-24 | 宁国市开源电力耐磨材料有限公司 | Metal surface coating based on silica sol and preparation method thereof |
| CN110064729A (en) * | 2019-05-22 | 2019-07-30 | 惠州市惠阳广杰五金制品有限公司 | Shell membrane manufacture craft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1045096C (en) | 1999-09-15 |
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