CN105060714B - Composite enamel for cast iron valve, and preparation and coating method for composite enamel - Google Patents
Composite enamel for cast iron valve, and preparation and coating method for composite enamel Download PDFInfo
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- CN105060714B CN105060714B CN201510497208.3A CN201510497208A CN105060714B CN 105060714 B CN105060714 B CN 105060714B CN 201510497208 A CN201510497208 A CN 201510497208A CN 105060714 B CN105060714 B CN 105060714B
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Abstract
The invention discloses composite enamel for a cast iron valve, and a preparation and coating method for the composite enamel. The composite enamel comprises the following components in parts by weight: 30-40 parts of silicon dioxide, 10-20 parts of talcum powder, 5-10 parts of silicon carbide, 15-25 parts of sodium silicate, 20-30 parts of borax, 8-12 parts of titanium dioxide, 6-10 parts of activated calcium carbonate, 4-8 parts of zinc oxide, 12-16 parts of epoxy resin and 3-7 parts of polyvinyl chloride. The composite enamel has the benefits that epoxy resin and polyvinyl chloride are used as important accessories of a mixed adhesive, so that the adhesion and toughness of the enamel are enhanced, a formed enamel protective layer has not only rigidity and smoothness, but also a certain elasticity; through a repeated coating method, a mixed solution can be in contact with the inner wall of the valve fully and uniformly; the thickness of the composite enamel can be controlled as required.
Description
Technical field
The present invention relates to the compound enamel of valve interior surface handling process, more particularly, to cast iron valve inner surface treatment
And its prepare painting method.
Background technology
Valve（famen）It is the control unit in fluid delivery system, with cut-off, regulation, water conservancy diversion, prevents adverse current, steady
The functions such as pressure, shunting or overflow pressure relief.For the valve of fluid control systems, from simplest stop valve to it is extremely complex from
Various valves used in control system, its kind and specification it is quite various.Valve can be used to control empty gas and water, steam, various corruption
The flowing of all kinds fluid such as corrosion medium, mud, oil product, liquid metal and radiating medium.Valve also divides according to material
For cast iron valve, cast steel valve, stainless valve（201st, 304,316 etc.）, chrome-molybdenum steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel
Valve, Plastic valve, nonstandard customized grade valve material.Cast iron valve is usually used in supply and drain water system, and valve interior surface needs to take
Protective measure, coats layer protective layer, general using spray painting or spray epoxy, this valve surface handling process not ring
Protect, be also easy to produce secondary pollution, acid resistance, alkali resistance and salt tolerance are undesirable, are easily corroded under soda acid salt environment；Same hour hands
The defects such as the Minute pores, the crackle that produce in casting process to valve foundry goods are helpless, affect the smooth of valve interior surface
Degree.Above-mentioned technical barrier causes cast iron valve to be normally only used for common civilian, industrial water drainage pipeline.
The content of the invention
The present invention is to solve existing cast iron valve not environmentally, be also easy to produce secondary pollution, not acidproof, alkaline-resisting, salt tolerant,
The not high technical problem of surface smoothness, provides a kind of non-secondary pollution, highly corrosion resistant, flatness height, adhesive force strong for this
Compound enamel for cast iron valve inner surface and its prepare painting method.
The technical scheme is that：For the compound enamel of cast iron valve, it is included in parts by weight：30-40 parts
Silicon dioxide, the Pulvis Talci of 10-20 parts, the carborundum of 5-10 parts, the sodium silicate of 15-25 parts, the Borax of 20-30 parts, 8-12 parts
Titanium dioxide, the activated Calcium carbonate of 6-10 parts, the Zinc Oxide of 4-8 parts, the polychlorostyrene second of the epoxy resin of 12-16 parts and 3-7 parts
Alkene.
Compound enamel for cast iron valve prepares painting method, and it is comprised the following steps：（1）, sizing material preparation：Will
The Zinc Oxide mix homogeneously of the epoxy resin, the activated Calcium carbonate of 6-10 parts and 4-8 parts of 12-16 parts is ground into powder mixing
Thing, being put in banbury carries out mixing 20-30min, and the process of mixing adds at twice the Borax of 20-30 parts, adds for the first time
30% Borax, the Borax of second addition 70%, discharge, the material natural cooling of discharge are started when temperature reaches 530-550 DEG C
Sizing material A is obtained to room temperature；By the silicon dioxide of polrvinyl chloride 30-40 parts of 3-7 parts, the Pulvis Talci of 10-20 parts and 5-10 parts
Carborundum mix homogeneously is ground into powder mixture, and being put in banbury carries out mixing 20-30min, and the process of mixing is divided to two
The titanium dioxide of secondary addition 8-12 parts, adds for the first time 70% titanium dioxide, the titanium dioxide of second addition 30% to work as temperature
Start discharge when reaching 560-570 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material B；Sizing material A and sizing material B mixing is put
Enter centrifugation 10-20min in centrifuge and form blend glue stuff, centrifugal rotational speed is 200-300r/min, and temperature is maintained while centrifugation
At 600-620 DEG C；（2）, repeatedly coating：Blend glue stuff is diluted with water to into mixed solution, blend glue stuff is with the volume ratio of water
1:50, valve internal is filled with mixed solution, and mixed solution 5-9min is stirred, mixed solution is poured out, so repeatedly 3-5 time,
Drying valve internal.
The invention has the beneficial effects as follows blend glue stuff strengthens enamel by the use of epoxy resin and polrvinyl chloride as important adjuvant
Adhesive force and toughness so that the enamel protective layer of formation also having certain elastic force with hardness and while smoothness,
Repeatedly the method for coating ensure that the full and uniform contact of mixed solution and valve inwall, and the thickness for being combined enamel can be as needed
Control；Obtained compound enamel environmental protection non-secondary pollution of the invention, it is preferable to acid resistance, alkali resistance, salt tolerance；Mixed solution
Repeatedly coating can repair the such as tiny pore of manufacturing defect and crackle of valve surface etc..
Specific embodiment
With reference to embodiment, the present invention will be further described.
Embodiment 1：For the compound enamel of cast iron valve, it is included in parts by weight：30 parts of silicon dioxide, 10 parts
Pulvis Talci, 5 parts of carborundum, 15 parts of sodium silicate, 20 parts of Borax, 8 parts of titanium dioxide, 6 parts of activated Calcium carbonate, 4 parts
Zinc Oxide, 12 parts of epoxy resin and 3 parts of polrvinyl chloride.
Compound enamel for cast iron valve prepares painting method, and it is comprised the following steps：（1）, sizing material preparation：Will
12 parts of epoxy resin, 6 parts of activated Calcium carbonate and 4 parts of Zinc Oxide mix homogeneously are ground into powder mixture, are put into close
Mixing 20min is carried out in mill, the process of mixing adds at twice 20 parts of Borax, 30% Borax is added for the first time, for the second time
70% Borax is added, discharge is started when temperature reaches 530 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material A；By 3 parts
The silicon dioxide of 30 parts of polrvinyl chloride, 10 parts of Pulvis Talci and 5 parts of carborundum mix homogeneously be ground into powder mixture,
Being put in banbury carries out mixing 20min, and the process of mixing adds at twice 8 parts of titanium dioxide, and the two of 70% are added for the first time
Titanium oxide, the titanium dioxide of second addition 30%, discharge is started when temperature reaches 560 DEG C, and the material of discharge naturally cools to room
Temperature obtains sizing material B；Sizing material A and sizing material B mixing is put in centrifuge 10min formation blend glue stuffs are centrifuged, centrifugal rotational speed is
200r/min, temperature maintains 600 DEG C while centrifugation；（2）, repeatedly coating：Blend glue stuff is diluted with water to into mixed solution,
Blend glue stuff is 1 with the volume ratio of water:50, valve internal is filled with mixed solution, and mixed solution 5min is stirred, pour out mixing
Solution, so repeatedly 3 times, dries valve internal.
Embodiment 2：For the compound enamel of cast iron valve, it is included in parts by weight：35 parts of silicon dioxide, 15 parts
Pulvis Talci, 8 parts of carborundum, 20 parts of sodium silicate, 25 parts of Borax, 10 parts of titanium dioxide, 8 parts of activated Calcium carbonate, 6 parts
Zinc Oxide, 14 parts of epoxy resin and 5 parts of polrvinyl chloride.
Compound enamel for cast iron valve prepares painting method, and it is comprised the following steps：（1）, sizing material preparation：Will
14 parts of epoxy resin, 8 parts of activated Calcium carbonate and 6 parts of Zinc Oxide mix homogeneously are ground into powder mixture, are put into close
Mixing 25min is carried out in mill, the process of mixing adds at twice 25 parts of Borax, 30% Borax is added for the first time, for the second time
70% Borax is added, discharge is started when temperature reaches 540 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material A；By 5 parts
The silicon dioxide of 35 parts of polrvinyl chloride, 15 parts of Pulvis Talci and 8 parts of carborundum mix homogeneously be ground into powder mixture,
Being put in banbury carries out mixing 25min, and the process of mixing adds at twice 10 parts of titanium dioxide, and 70% is added for the first time
Titanium dioxide, the titanium dioxide of second addition 30%, discharge is started when temperature reaches 565 DEG C, and the material of discharge is naturally cooled to
Room temperature obtains sizing material B；Sizing material A and sizing material B mixing is put in centrifuge 15min formation blend glue stuffs are centrifuged, centrifugal rotational speed is
250r/min, temperature maintains 610 DEG C while centrifugation；（2）, repeatedly coating：Blend glue stuff is diluted with water to into mixed solution,
Blend glue stuff is 1 with the volume ratio of water:50, valve internal is filled with mixed solution, and mixed solution 7min is stirred, pour out mixing
Solution, so repeatedly 4 times, dries valve internal.
Embodiment 3：For the compound enamel of cast iron valve, it is included in parts by weight：40 parts of silicon dioxide, 20 parts
Pulvis Talci, 10 parts of carborundum, 25 parts of sodium silicate, 30 parts of Borax, 12 parts of titanium dioxide, 10 parts of active carbonic acid
Calcium, 8 parts of Zinc Oxide, 16 parts of epoxy resin and 7 parts of polrvinyl chloride.
Compound enamel for cast iron valve prepares painting method, and it is comprised the following steps：（1）, sizing material preparation：Will
16 parts of epoxy resin, 10 parts of activated Calcium carbonate and 8 parts of Zinc Oxide mix homogeneously are ground into powder mixture, are put into close
Mixing 30min is carried out in mill, the process of mixing adds at twice 30 parts of Borax, 30% Borax is added for the first time, for the second time
70% Borax is added, discharge is started when temperature reaches 550 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material A；By 7 parts
The silicon dioxide of 40 parts of polrvinyl chloride, 20 parts of Pulvis Talci and 10 parts of carborundum mix homogeneously be ground into powder mixing
Thing, being put in banbury carries out mixing 30min, and the process of mixing adds at twice 12 parts of titanium dioxide, and 70% is added for the first time
Titanium dioxide, second adds 30% titanium dioxide, and discharge, the material natural cooling of discharge are started when temperature reaches 570 DEG C
Sizing material B is obtained to room temperature；Sizing material A and sizing material B mixing is put in centrifuge 20min formation blend glue stuffs, centrifugal rotational speed is centrifuged
For 300r/min, temperature maintains 620 DEG C while centrifugation；（2）, repeatedly coating：Blend glue stuff is diluted with water to into mixing molten
Liquid, blend glue stuff is 1 with the volume ratio of water:50, valve internal is filled with mixed solution, and mixed solution 9min is stirred, pour out
Mixed solution, so repeatedly 5 times, dries valve internal.
The preparation of sizing material is divided into the present invention into two steps, i.e. sizing material A and sizing material B is fabricated separately, and takes full advantage of epoxy resin
With the bonding force and thermoplasticity of polrvinyl chloride, while and do not influence each other, finally sizing material A and sizing material B are mixed, dilute with water,
Fill valve, it is ensured that the effective ingredient of sizing material is fully contacted with valve interior surface, and when mixed solution is stirred valve is attached to
Door inner surface, the ratio of water and blend glue stuff is particularly significant, can cause to waste and valve interior surface became uneven more, has lacked meeting
Cause effective ingredient not enough.The sizing material of valve interior surface attachment is relatively thin when coating 3 times, coats the sizing material of 5 valve surfaces attachments
It is thicker, can adjust as needed.Certainly the mixed solution of the present invention can also be using spraying, brushing or other methods and valve
Inner surface is combined, but the adhesion of compound enamel and valve interior surface, compound enamel uniformity coefficient, compound enamel thickness are all not so good as
What embodiment was provided fills the method ideal that valve is stirred for.
The manufacturing process of the present invention does not produce any pollutant, is 100% to the utilization rate of all raw materials, non-secondary pollution；
Due to wherein with the addition of Borax and activated Calcium carbonate, mixed solution has fabulous lubricity, mobility, dispersibility and organic
Property, it is strong with the intermolecular affinity of rubber, plastics；Acid resistance, alkali resistance and salt tolerance are better than common enamel and plastic-blasting work
Skill, mixed solution uses water as carrier and blend glue stuff therein is uniformly coated in into invention inner surface or outer surface, can be with
Minute pores and the defect such as crackle that valve surface is produced due to the defect of manufacturing process are repaired, makes the protective layer of valve surface equal
It is even.Applied range, not only can apply, it may also be used for oil, chemical industry, power, ship, sea in civilian, general industry pipeline
The pipelines such as water desalination.
Claims (2)
1. it is used for the compound enamel of cast iron valve, it is characterized in that it is included in parts by weight：The silicon dioxide of 30-40 parts, 10-20
The Pulvis Talci, the carborundum of 5-10 parts, the sodium silicate of 15-25 parts, the Borax of 20-30 parts, the titanium dioxide of 8-12 parts, 6-10 of part
Part activated Calcium carbonate, the Zinc Oxide of 4-8 parts, the polrvinyl chloride of the epoxy resin of 12-16 parts and 3-7 parts.
2. the as claimed in claim 1 compound enamel for being used for cast iron valve prepares painting method, it is characterized in that it include with
Lower step：（1）, sizing material preparation：The Zinc Oxide of the epoxy resin of 12-16 parts, the activated Calcium carbonate of 6-10 parts and 4-8 parts is mixed
The mixture that is uniformly ground into powder is closed, being put in banbury carries out mixing 20-30min, and the process of mixing adds at twice 20-
30 parts of Borax, adds for the first time 30% Borax, the Borax of second addition 70% to start when temperature reaches 530-550 DEG C
Discharge, the material of discharge naturally cools to room temperature and obtains sizing material A；By the polrvinyl chloride of 3-7 parts, the silicon dioxide of 30-40 parts, 10-
20 parts of Pulvis Talci and the carborundum mix homogeneously of 5-10 parts are ground into powder mixture, are put in banbury and are kneaded
20-30min, the process of mixing adds at twice the titanium dioxide of 8-12 parts, 70% titanium dioxide is added for the first time, for the second time
30% titanium dioxide is added, discharge is started when temperature reaches 560-570 DEG C, the material of discharge naturally cools to room temperature and obtains glue
Material B；Sizing material A and sizing material B mixing is put in centrifuge 10-20min formation blend glue stuffs are centrifuged, centrifugal rotational speed is 200-
300r/min, temperature maintains 600-620 DEG C while centrifugation；（2）, repeatedly coating：Blend glue stuff is diluted with water to into mixing
Solution, blend glue stuff is 1 with the volume ratio of water:50, valve internal is filled with mixed solution, and mixed solution 5-9min is stirred,
Mixed solution is poured out, so repeatedly 3-5 time, valve internal is dried.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510497208.3A CN105060714B (en) | 2015-08-14 | 2015-08-14 | Composite enamel for cast iron valve, and preparation and coating method for composite enamel |
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| CN201510497208.3A CN105060714B (en) | 2015-08-14 | 2015-08-14 | Composite enamel for cast iron valve, and preparation and coating method for composite enamel |
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| CN105060714A CN105060714A (en) | 2015-11-18 |
| CN105060714B true CN105060714B (en) | 2017-05-17 |
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| CN106189545B (en) * | 2016-07-18 | 2019-04-30 | 安徽铜陵科力阀门有限责任公司 | The preparation coating method of composite coating for cast iron valve |
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| US7754345B2 (en) * | 2004-06-16 | 2010-07-13 | Jih-Hsin Tsai | Far infrared emitting nano glaze |
| CN103063079B (en) * | 2013-01-17 | 2014-09-10 | 南京圣诺热管有限公司 | Metal enamel heat transmission element and processing method thereof |
| CN103992034A (en) * | 2013-02-18 | 2014-08-20 | 刘明程 | Preparation of negative ion-releasing cast iron enamel coating material |
| CN103193387B (en) * | 2013-04-23 | 2015-04-15 | 大唐国际化工技术研究院有限公司 | Enamel material for 1Cr18Ni9Ti stainless steel surface and preparation method thereof |
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