CN106378414A - Casting paint good in liquidity, and preparing method and using method of paint - Google Patents
Casting paint good in liquidity, and preparing method and using method of paint Download PDFInfo
- Publication number
- CN106378414A CN106378414A CN201610886356.9A CN201610886356A CN106378414A CN 106378414 A CN106378414 A CN 106378414A CN 201610886356 A CN201610886356 A CN 201610886356A CN 106378414 A CN106378414 A CN 106378414A
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- Prior art keywords
- component
- parts
- coating
- paint
- foundry facing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses casting paint good in liquidity, and a preparing method and a using method of the paint. The casting paint comprises, by mass part, 100 parts to 120 parts of a component A, 130 parts to 150 parts of a component B and 15 parts to 25 parts of a component C; the component A is a fireproofing component, the component B is a carrier liquid and bonding agent component, and the component C is an additive and assistant component; the paint has the beneficial effects of being good in heat insulation performance, high in strength, low in gas generation amount, good in suspension performance and the like, is good in liquidity performance and is particularly suitable for a casting surface of a complex structure. Meanwhile, the casting paint selects the excellent raw materials for cooperative use, and the performance of the paint is further improved.
Description
Technical field
The invention belongs to casting field is and in particular to a kind of foundry facing and preparation method thereof, using method.
Background technology
Technology of EPC is a kind of precise forming technology being at home and abroad widely applied.Coating is evaporative pattern
One of key technology of casting technique, the quality of coating quality directly affects the success or failure of this technique.Disclose in many documents, disappear
Die cast technique success or not 50% depends on apperance, and 30% depends on coating, and 20% depends on other technological factors, thus domestic
The cast paint that outer founder author offsets used in lost pattern casting technology is paid much attention to.In China, due to cast paint
Commercialized degree is not high, and most of lost foam casting producer lacks system in-depth study to the formula of coating and performance, in reality
Border is general in producing all to use by oneself in production scene autogamy, leads to casting quality more problems, directly weakens lost foam casting essence
The advantage really producing, significantly limit the development of Technology of EPC.Therefore, go deep into systematic research and efficiently control
Lost foam casting coating has important and far-reaching meaning to the stability improving overall lost foam casting process process.
Foundry facing except need meet to heat-proof quality, intensity requirement in addition it is also necessary to this coating application process
Middle practical and beneficial to storage.Especially in coating process, the mobile performance of foundry facing is extremely important, once mobile performance
Unqualified, then coating can be made cannot to be fully contacted with mo(U)ld face, be also easy to produce the defects such as hole, cavity.Cast in prior art
In the technical scheme of coating, to the part of concern mobility, such as Application No. 201410740217.6 is entitled for shorter mention《One
Plant cast paint》Chinese patent, the program disclose a kind of include roughing sand, binding agent, firming agent and lubricant casting apply
Material, this coating can be used for casting, but to coating, the property in addition to coating performance does not put into excessively in this scenario
Concern.
Content of the invention
A kind of foundry facing of good fluidity is provided, this coating not only possesses that heat-proof quality is good, intensity in the present invention
The advantages of high and low gas forming amount, suspendability are good, and good flowing properties, are especially suitable for the casting mold table of complex structure
Face.Meanwhile, the foundry facing in the present invention is used cooperatively from excellent material feedstock, improves coating further
Performance.
The technical problem to be solved is achieved by following steps：
Cast paint can be formulated by plurality of raw materials, refractory material generally to be included, carrier fluid, binding agent, suspending agent and auxiliary agent
Deng composition.Refractory material be formed coating main part, be determine strength of coating, stability, most important group of gas-forming property
Become part, cooperating from multiple different mineral materials in component A of the present invention is made for that heat-proof quality is good and intensity height
Raw material.Schungite, flyash, attapulgite, activated zinc oxide, konilite, expanded perlite is selected to become packet in the present invention
Become refractory material component.Schungite raw ore is a kind of remaining complex mineral of unique spherical carbide matrix structure, microcosmic
On be a kind of synthesize super discrete carborundum powder ready-made schist, by schungite power applications in refractory material, take its hole
Rate is high（More than 5%）, compressive strength big（More than 10kt/mm2）, heat conductivity little, launch phase surface amass big feature, not only secondary
Graphite material resistance to elevated temperatures itself is good, and can be precious with flyash, attapulgite, activated zinc oxide, konilite and expansion
The powder of Zhu Yan combines, and forms stable structure composition, the overall fire resistance of lifting component A.In addition, selecting in component A
The mixed-powder of flyash, attapulgite, activated zinc oxide, konilite and expanded perlite is also beneficial to lift coating solid knot
The entropy of structure composition, makes coating system activity higher.Isopropanol, butoxy ethanol is adopted as load in component B of the present invention
Liquid, tall oil and hydroxyethyl methylacrylate are as active regulator, phenolic resin and coupling agent as binding agent.The present invention's
Aerosil, magnesium oxide, carboxymethyl cellulose, the compositionss of nano titanium oxide are selected, on the one hand, should in component C
Compositionss contribute to increasing bond effect, and on the other hand, said composition contributes to the dispersion of the internal raw material of coating, improves simultaneously and applies
The apparent condition of material film forming.
The foundry facing composition providing in the present invention and weight portion are：
Described additive includes component A, component B, component C, and wherein three's mass parts are：
Component A 100-120 part
Component B 130-150 part
Component C 15-25 part
Wherein, in component A and component A, each composition weight portion is：
Schungite 20-30 part
Flyash 5-10 part
Attapulgite 15-20 part
Activated zinc oxide 10-14 part
Konilite 6-8 part
Expanded perlite 3-5 part
In component B and component B, each composition weight portion is：
Isopropanol 65-80 part
Butoxy ethanol 10-15 part
Tall oil 5-8 part
Hydroxyethyl methylacrylate 6-12 part
Phenolic resin 20-25 part
Coupling agent 0.6-0.8 part
Coupling agent in component B is silane coupler or titanate coupling agent.
In component C and component C, each composition weight portion is：
Aerosil 15-20 part
Magnesium oxide 2-4 part
Carboxymethyl cellulose 5-8 part
Nano titanium oxide 8-12 part.
In component C, aerosil specific surface area is 450-480m2/ g, density is 55-70kg/m3.
In component C, nano titanium oxide particle size range is 50-80nm.
Further, the coating density in the present invention is 1.49-1.60g/cm3.
The present invention also provides a kind of method preparing above-mentioned foundry facing, comprises the steps：
Step one, each raw material in component A is crushed, toasts 4-6 hour, baking after mix homogeneously at a temperature of 220-250 DEG C
After be ground to solid particle granularity be less than 10 μm, prepared component A；
Preferably, after component A raw material crushes, granularity is 50-80 μm.
Preferably, continue baking 2-3 hour after component A is ground and finished at a temperature of 220-250 DEG C.
Step 2, each raw material in component B is mixed, dispersion 25-45min under the conditions of 800-1500r/min, prepared group
Divide B；
Step 3, is less than 20 μm by being ground to solid particle granularity after each raw material mix homogeneously in component C, prepared component C；
Step 4, after component A, B being obtained, C are mixed, is ground to solid in above-mentioned steps under 55-65 DEG C of temperature conditionss
Grain granularity obtains final product required coating less than 8 μm.
Foundry facing fire resistance in the present invention is good, mobility is good, is particularly suited for being applied to labyrinth
Mo(U)ld face.
The present invention has the advantages that：
1st, the foundry facing good flowing properties in the present invention, are especially suitable for the mo(U)ld face of complex structure.
2nd, the foundry facing in the present invention can reduce the thermal shock suffered by metal mold, improves its service life, scalable
System thermal resistance, control rate of cooling, reach requirement with the tissue and performance ensureing foundry goods.
3rd, the foundry facing intensity in the present invention is high, has certain adhesive strength and cohesive strength, can prevent metal
Liquid washes away coating under the influence of centrifugal force.
4th, the foundry facing in the present invention has low gas forming amount, it is to avoid because gas discharge the founder that causes not exclusively,
The defects such as pore, slag inclusion and carbon black.
5th, the foundry facing good rheological property in the present invention, shelf-stable, easy to clean.
Specific embodiment
Below by embodiment, present disclosure is conducted further description.
Embodiment 1
1st, composition proportion
In component A and component A, each composition weight portion is：
20 parts of schungite
5 parts of flyash
15 parts of attapulgite
10 parts of activated zinc oxide
6 parts of konilite
3 parts of expanded perlite
In component B and component B, each composition weight portion is：
65 parts of isopropanol
10 parts of butoxy ethanol
5 parts of tall oil
6 parts of hydroxyethyl methylacrylate
20 parts of phenolic resin
0.6 part of titanate coupling agent
In component C and component C, each composition weight portion is：
15 parts of aerosil
2 parts of magnesium oxide
5 parts of carboxymethyl cellulose
8 parts of nano titanium oxide.
In component C, aerosil specific surface area is 465m2/ g, density is 68kg/m3.
In component C, nano titanium oxide particle diameter is 60nm.
Component A, component B, component C mass parts are：
100 parts of component A
130 parts of component B
15 parts of component C
2nd, the preparation of coating
Step one, each raw material in component A is crushed to 50 μm, toasts 6 hours at a temperature of 250 DEG C after mix homogeneously, baking
After be ground to solid particle granularity be less than 10 μm, grind finish after under the conditions of 160 DEG C continue baking 3h dried completely to moisture
Dry, prepared component A；
Step 2, each raw material mixing in component B disperses 45min, prepared component B under the conditions of 1500r/min；
Step 3, is less than 20 μm by being ground to solid particle granularity after each raw material mix homogeneously in component C, prepared component C；
Step 4, after component A, B being obtained, C are mixed, is ground to solid particle grain in above-mentioned steps under 65 DEG C of temperature conditionss
Degree obtains final product required coating less than 8 μm.
Embodiment 2
The raw material adopting in the present embodiment is same as Example 1, and preparation method is also same as Example 1.
In component A and component A, each composition weight portion is：
25 parts of schungite
8 parts of flyash
17.5 parts of attapulgite
12 parts of activated zinc oxide
7 parts of konilite
3.5 parts of expanded perlite
In component B and component B, each composition weight portion is：
72 parts of isopropanol
13 parts of butoxy ethanol
7 parts of tall oil
9 parts of hydroxyethyl methylacrylate
23 parts of phenolic resin
0.7 part of titanate coupling agent
In component C and component C, each composition weight portion is：
17 parts of aerosil
3 parts of magnesium oxide
6.5 parts of carboxymethyl cellulose
10 parts of nano titanium oxide.
Component A, component B, component C mass parts are：
110 parts of component A
135 parts of component B
20 parts of component C
Embodiment 3
The raw material adopting in the present embodiment is same as Example 1, and preparation method is also same as Example 1.
In component A and component A, each composition weight portion is：
27 parts of schungite
9 parts of flyash
14 parts of attapulgite
13 parts of activated zinc oxide
8 parts of konilite
5 parts of expanded perlite
In component B and component B, each composition weight portion is：
77 parts of isopropanol
15 parts of butoxy ethanol
7.4 parts of tall oil
10 parts of hydroxyethyl methylacrylate
25 parts of phenolic resin
0.8 part of titanate coupling agent
In component C and component C, each composition weight portion is：
19 parts of aerosil
3 parts of magnesium oxide
7 parts of carboxymethyl cellulose
11 parts of nano titanium oxide.
Component A, component B, component C mass parts are：
110 parts of component A
133 parts of component B
20 parts of component C
Embodiment 4
The raw material adopting in the present embodiment is same as Example 1, and preparation method is also same as Example 1.
In component A and component A, each composition weight portion is：
30 parts of schungite
10 parts of flyash
20 parts of attapulgite
14 parts of activated zinc oxide
8 parts of konilite
5 parts of expanded perlite
In component B and component B, each composition weight portion is：
80 parts of isopropanol
15 parts of butoxy ethanol
8 parts of tall oil
12 parts of hydroxyethyl methylacrylate
25 parts of phenolic resin
0.8 part of titanate coupling agent
In component C and component C, each composition weight portion is：
20 parts of aerosil
4 parts of magnesium oxide
8 parts of carboxymethyl cellulose
12 parts of nano titanium oxide.
Component A, component B, component C mass parts are：
120 parts of component A
147 parts of component B
25 parts of component C
The foundry facing automatic spraying equipment being obtained in embodiment 1,2,3,4 is coated on mo(U)ld face, test coating is close
Degree, suspension, specific viscosity, thixotropy and gas-forming property.
The measuring method of coating density adopts general graduated cylinder weighing method.
Coating suspension is the ability that coating resists the layering of solid refractory powder and precipitation, is represented with suspensibility %.To suspension
Property test using tool plug graduated cylinder measurement method, coating configure will be mixed pour into immediately after uniformly ready have fill in graduated cylinder
In so as to liquid level reaches at 100ml absolute altitude, under static state, will apply material samples place certain time after, observe coating precipitation
Situation, the percentage ratio accounting for former paint solvent with non-precipitating thing represents the suspension of this coating.
The specific viscosity of coating is measured by efflux cup method.
The thixotropic property of coating adopts rotating cylinder viscometer to test.
The gas-forming property of coating is measured on intelligent gas-forming property tester, and method of testing is：Coating to be measured is placed in baking
In dry case, it is warming up to 150 DEG C, be incubated 3h, be cooled to room temperature, grind into powder is standby.During test, tester is warming up to 850
DEG C, keep steady temperature, take painting material samples 1g to be placed in porcelain boat, then porcelain boat is put in the porcelain tube of high temperature furnace, and push away rapidly
Enter to the quartz ampoule red heat part of stove, with stopper, the mouth of pipe is closed, so that sample is heated under conditions of very hot, gas-forming property simultaneously
The record portion of tester is divided and is started working, and records gas forming amount.
Test result is as follows：
By above-mentioned test result and practice in use apparently, the foundry facing medium density in embodiment, resistance to
Store, rheology thixotropic property is good, gas forming amount is low（Contrast conventional cast the amount of gas evolution from the coating is more than 30ml/g）, in actually used mistake
In journey, intensity height, heat resistance are good, compared with existing foundry facing, have obvious performance advantage.
Last it should be noted that above example is only in order to illustrate the technical scheme of the embodiment of the present invention rather than it is entered
Row limits, although being described in detail to the embodiment of the present invention with reference to preferred embodiment, those of ordinary skill in the art
It should be understood that still can modify or equivalent to the technical scheme of the embodiment of the present invention, and these are changed or wait
Also amended technical scheme can not be made to depart from the scope of embodiment of the present invention technical scheme with replacement.
Claims (9)
1. a kind of good foundry facing of mobility is it is characterised in that composition and weight portion are：
Described additive includes component A, component B, component C, and wherein three's mass parts are：
Component A 100-120 part
Component B 130-150 part
Component C 15-25 part
Wherein, in component A and component A, each composition weight portion is：
Schungite 20-30 part
Flyash 5-10 part
Attapulgite 15-20 part
Activated zinc oxide 10-14 part
Konilite 6-8 part
Expanded perlite 3-5 part
In component B and component B, each composition weight portion is：
Isopropanol 65-80 part
Butoxy ethanol 10-15 part
Tall oil 5-8 part
Hydroxyethyl methylacrylate 6-12 part
Phenolic resin 20-25 part
Coupling agent 0.6-0.8 part
In component C and component C, each composition weight portion is：
Aerosil 15-20 part
Magnesium oxide 2-4 part
Carboxymethyl cellulose 5-8 part
Nano titanium oxide 8-12 part.
2. foundry facing as claimed in claim 1 it is characterised in that：Coupling agent in component B is silane coupler or titanium
Acid esters coupling agent.
3. foundry facing as claimed in claim 1 it is characterised in that：In component C, aerosil specific surface area is
450-480m2/ g, density is 55-70kg/m3.
4. foundry facing as claimed in claim 1 it is characterised in that：In component C, nano titanium oxide particle size range is 50-
80nm.
5. foundry facing as claimed in claim 1 it is characterised in that：Described coating density is 1.49-1.60g/cm3.
6. a kind of method preparing described foundry facing as arbitrary in claim 1-5 is it is characterised in that comprise the steps：
Step one, each raw material in component A is crushed, toasts 4-6 hour, baking after mix homogeneously at a temperature of 220-250 DEG C
After be ground to solid particle granularity be less than 10 μm, prepared component A；
Step 2, each raw material mixing in component B disperses 25-45min, prepared component B under the conditions of 800-1500r/min；
Step 3, is less than 20 μm by being ground to solid particle granularity after each raw material mix homogeneously in component C, prepared component C；
Step 4, after component A, B being obtained, C are mixed, is ground to solid in above-mentioned steps under 55-65 DEG C of temperature conditionss
Grain granularity obtains final product required coating less than 8 μm.
7. preparation method for coating as claimed in claim 6 it is characterised in that：After in step one, component A raw material crushes, granularity is
50-80μm.
8. preparation method for coating as claimed in claim 6 it is characterised in that：In 220- after in step one, component A is ground and is finished
Continue baking 2-3 hour at a temperature of 250 DEG C.
9. a kind of using method of described foundry facing as arbitrary in claim 1-5 it is characterised in that：Described coating is applied to
There is the mo(U)ld face of labyrinth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886356.9A CN106378414A (en) | 2016-10-10 | 2016-10-10 | Casting paint good in liquidity, and preparing method and using method of paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886356.9A CN106378414A (en) | 2016-10-10 | 2016-10-10 | Casting paint good in liquidity, and preparing method and using method of paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106378414A true CN106378414A (en) | 2017-02-08 |
Family
ID=57937312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610886356.9A Pending CN106378414A (en) | 2016-10-10 | 2016-10-10 | Casting paint good in liquidity, and preparing method and using method of paint |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580806A (en) * | 2018-04-28 | 2018-09-28 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of precision stainless steel casting shell |
| CN109940124A (en) * | 2019-04-17 | 2019-06-28 | 安徽南凯元机械有限公司 | A kind of lost foam paint and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580806A (en) * | 2018-04-28 | 2018-09-28 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of precision stainless steel casting shell |
| CN109940124A (en) * | 2019-04-17 | 2019-06-28 | 安徽南凯元机械有限公司 | A kind of lost foam paint and preparation method thereof |
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