CN105060714A - 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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- CN105060714A CN105060714A CN201510497208.3A CN201510497208A CN105060714A CN 105060714 A CN105060714 A CN 105060714A CN 201510497208 A CN201510497208 A CN 201510497208A CN 105060714 A CN105060714 A CN 105060714A
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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 valve interior surface treatment process, particularly relate to for cast iron valve inner surface treatment compound enamel and prepare coating method.
Background technology
Valve (famen) is the function unit in fluid delivery system, has cut-off, adjustment, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.For the valve of fluid control system, various valves used from the simplest stopping valve to very complicated robot control system(RCS), its kind and specification are quite various.Valve can be used for the flowing controlling all kinds fluids such as air, water, steam, various corrosive medium, mud, oil product, liquid metal and radiating medium.Valve is also divided into cast iron valve according to material, cast steel valve, stainless valve (201,304,316 etc.), chromemolybdenum steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel valve, Plastic valve, nonstandard customized material such as valve such as grade.Cast iron valve is usually used in supply and drain water system, valve interior surface needs to take sfgd., coating layer protective layer, general employing is sprayed paint or spray epoxy, this valve surface treatment process not environmentally, easy generation secondary pollution, acid resistance, alkali resistance and salt tolerance are undesirable, are easily corroded under acid-alkali salt environment; The defect such as Minute pores, crackle simultaneously produced in castingprocesses for valve foundry goods is helpless, affects the planeness of valve interior surface.Above-mentioned technical barrier makes cast iron valve general only for common civilian, industrial water drainage pipeline.
Summary of the invention
The present invention is to solve existing cast iron valve not environmentally, easily produces secondary pollution, not acidproof, alkaline-resisting, salt tolerant, surface finish is high-technology problem not, provides that a kind of non-secondary pollution, highly corrosion resistant, planeness are high, the compound enamel for cast iron valve internal surface of strong adhesion and prepare coating method for this reason.
Technical scheme of the present invention is: for the compound enamel of cast iron valve, it comprises with parts by weight: the polyvinyl chloride of the activated Calcium carbonate of the borax of the silicon carbide of the silicon-dioxide of 30-40 part, the talcum powder of 10-20 part, 5-10 part, the water glass of 15-25 part, 20-30 part, the titanium dioxide of 8-12 part, 6-10 part, the zinc oxide of 4-8 part, the epoxy resin of 12-16 part and 3-7 part.
For cast iron valve compound enamel prepare coating method, it comprises the following steps: the preparation of (1), sizing material: the activated Calcium carbonate of the epoxy resin of 12-16 part, 6-10 part and the zinc oxide of 4-8 part are mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 20-30min, mixing process adds the borax of 20-30 part at twice, add the borax of 30% for the first time, second time adds the borax of 70%, start discharge when temperature reaches 530-550 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material A; The silicon carbide of the silicon-dioxide of polyvinyl chloride 30-40 part of 3-7 part, the talcum powder of 10-20 part and 5-10 part is mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 20-30min, mixing process adds the titanium dioxide of 8-12 part at twice, add the titanium dioxide of 70% for the first time, second time adds the titanium dioxide of 30%, start discharge when temperature reaches 560-570 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material B; The centrifugal 10-20min of whizzer is put in sizing material A and sizing material B mixing and forms blend glue stuff, centrifugal rotational speed is 200-300r/min, and centrifugal simultaneous temperature maintains 600-620 DEG C; (2), repeatedly apply: blend glue stuff is diluted with water to mixing solutions, and the volume ratio of blend glue stuff and water is 1:50, with mixing solutions filling valve internal, and be uniformly mixed solution 5-9min, pour out mixing solutions, 3-5 time so repeatedly, dry valve internal.
The invention has the beneficial effects as follows that blend glue stuff utilizes epoxy resin and polyvinyl chloride as important auxiliary material, strengthen sticking power and the toughness of enamel, the enamel protective layer formed is made also to have certain elastic force while having hardness and slickness, the method repeatedly applied ensure that mixing solutions contacts with the full and uniform of valve inwall, and the thickness of compound enamel can control as required; The compound enamel environmental protection non-secondary pollution that the present invention obtains, better to acid resistance, alkali resistance, salt tolerance; The repeatedly coating of mixing solutions can repair the such as tiny pore of the manufacturing defect of valve surface and crackle etc.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1: for the compound enamel of cast iron valve, it comprises with parts by weight: the polyvinyl chloride of the silicon-dioxide of 30 parts, the talcum powder of 10 parts, the silicon carbide of 5 parts, the water glass of 15 parts, the borax of 20 parts, the titanium dioxide of 8 parts, the activated Calcium carbonate of 6 parts, the zinc oxide of 4 parts, the epoxy resin of 12 parts and 3 parts.
For cast iron valve compound enamel prepare coating method, it comprises the following steps: the preparation of (1), sizing material: the epoxy resin of 12 parts, the activated Calcium carbonate of 6 parts and the zinc oxide of 4 parts are mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 20min, mixing process adds the borax of 20 parts at twice, add the borax of 30% for the first time, second time adds the borax of 70%, start discharge when temperature reaches 530 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material A; The silicon carbide of the silicon-dioxide of polyvinyl chloride 30 parts of 3 parts, the talcum powder of 10 parts and 5 parts is mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 20min, mixing process adds the titanium dioxide of 8 parts at twice, add the titanium dioxide of 70% for the first time, second time adds the titanium dioxide of 30%, start discharge when temperature reaches 560 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material B; The centrifugal 10min of whizzer is put in sizing material A and sizing material B mixing and forms blend glue stuff, centrifugal rotational speed is 200r/min, and centrifugal simultaneous temperature maintains 600 DEG C; (2), repeatedly apply: blend glue stuff is diluted with water to mixing solutions, and the volume ratio of blend glue stuff and water is 1:50, with mixing solutions filling valve internal, and is uniformly mixed solution 5min, pours out mixing solutions, 3 times so repeatedly, dry valve internal.
Embodiment 2: for the compound enamel of cast iron valve, it comprises with parts by weight: the polyvinyl chloride of the silicon-dioxide of 35 parts, the talcum powder of 15 parts, the silicon carbide of 8 parts, the water glass of 20 parts, the borax of 25 parts, the titanium dioxide of 10 parts, the activated Calcium carbonate of 8 parts, the zinc oxide of 6 parts, the epoxy resin of 14 parts and 5 parts.
For cast iron valve compound enamel prepare coating method, it comprises the following steps: the preparation of (1), sizing material: the epoxy resin of 14 parts, the activated Calcium carbonate of 8 parts and the zinc oxide of 6 parts are mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 25min, mixing process adds the borax of 25 parts at twice, add the borax of 30% for the first time, second time adds the borax of 70%, start discharge when temperature reaches 540 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material A; The silicon carbide of the silicon-dioxide of polyvinyl chloride 35 parts of 5 parts, the talcum powder of 15 parts and 8 parts is mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 25min, mixing process adds the titanium dioxide of 10 parts at twice, add the titanium dioxide of 70% for the first time, second time adds the titanium dioxide of 30%, start discharge when temperature reaches 565 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material B; The centrifugal 15min of whizzer is put in sizing material A and sizing material B mixing and forms blend glue stuff, centrifugal rotational speed is 250r/min, and centrifugal simultaneous temperature maintains 610 DEG C; (2), repeatedly apply: blend glue stuff is diluted with water to mixing solutions, and the volume ratio of blend glue stuff and water is 1:50, with mixing solutions filling valve internal, and is uniformly mixed solution 7min, pours out mixing solutions, 4 times so repeatedly, dry valve internal.
Embodiment 3: for the compound enamel of cast iron valve, it comprises with parts by weight: the polyvinyl chloride of the silicon-dioxide of 40 parts, the talcum powder of 20 parts, the silicon carbide of 10 parts, the water glass of 25 parts, the borax of 30 parts, the titanium dioxide of 12 parts, the activated Calcium carbonate of 10 parts, the zinc oxide of 8 parts, the epoxy resin of 16 parts and 7 parts.
For cast iron valve compound enamel prepare coating method, it comprises the following steps: the preparation of (1), sizing material: the epoxy resin of 16 parts, the activated Calcium carbonate of 10 parts and the zinc oxide of 8 parts are mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 30min, mixing process adds the borax of 30 parts at twice, add the borax of 30% for the first time, second time adds the borax of 70%, start discharge when temperature reaches 550 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material A; The silicon carbide of the silicon-dioxide of polyvinyl chloride 40 parts of 7 parts, the talcum powder of 20 parts and 10 parts is mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 30min, mixing process adds the titanium dioxide of 12 parts at twice, add the titanium dioxide of 70% for the first time, second time adds the titanium dioxide of 30%, start discharge when temperature reaches 570 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material B; The centrifugal 20min of whizzer is put in sizing material A and sizing material B mixing and forms blend glue stuff, centrifugal rotational speed is 300r/min, and centrifugal simultaneous temperature maintains 620 DEG C; (2), repeatedly apply: blend glue stuff is diluted with water to mixing solutions, and the volume ratio of blend glue stuff and water is 1:50, with mixing solutions filling valve internal, and is uniformly mixed solution 9min, pours out mixing solutions, 5 times so repeatedly, dry valve internal.
The preparation of sizing material is divided into two steps by the present invention, namely sizing material A and sizing material B separately makes, take full advantage of bounding force and the thermoplasticity of epoxy resin and polyvinyl chloride, do not influence each other again simultaneously, finally sizing material A and sizing material B is mixed, dilute with water, fill valve, ensure that the effective constituent of sizing material fully contacts with valve interior surface, valve interior surface is attached to when being uniformly mixed solution, the ratio of water and blend glue stuff is very important, many can cause waste and valve interior surface became uneven, has lacked and effective constituent can be caused not enough.When applying 3 times, the sizing material of valve interior surface attachment is thinner, apply the sizing material that 5 valve surface adhere to thicker, can regulate as required.Certain mixing solutions of the present invention also can adopt spraying, brush or other method is combined with valve interior surface, but the bonding force of compound enamel and valve interior surface, compound enamel degree of uniformity, compound enamel thickness be all not so good as that embodiment provides fill the method ideal that valve stirs again.
Making processes of the present invention does not produce any pollutent, is 100% to the utilization ratio of all raw materials, non-secondary pollution; Owing to wherein with the addition of borax and activated Calcium carbonate, mixing solutions has fabulous oilness, mobility, dispersiveness and Organic, strong with the intermolecular avidity of rubber, plastics; Acid resistance, alkali resistance and salt tolerance are all better than common enamel and workmanship of spraying plastics; mixing solutions utilizes water, as carrier, blend glue stuff is wherein coated in invention internal surface or outside surface uniformly; the defect such as Minute pores and crackle that valve surface produces due to the defect of manufacturing process can be repaired, make the protective layer of valve surface even.Applied range, not only can apply, also can be used for the pipelines such as oil, chemical industry, power, boats and ships, sea water desaltination in civilian, general industry pipeline.
Claims (2)
1. for the compound enamel of cast iron valve, it is characterized in that it comprises with parts by weight: the polyvinyl chloride of the activated Calcium carbonate of the borax of the silicon carbide of the silicon-dioxide of 30-40 part, the talcum powder of 10-20 part, 5-10 part, the water glass of 15-25 part, 20-30 part, the titanium dioxide of 8-12 part, 6-10 part, the zinc oxide of 4-8 part, the epoxy resin of 12-16 part and 3-7 part.
2. as claimed in claim 1 for cast iron valve compound enamel prepare coating method, it is characterized in that it comprises the following steps: (1), the preparation of sizing material: by the epoxy resin of 12-16 part, the activated Calcium carbonate of 6-10 part and the zinc oxide of 4-8 part mix the mixture that is ground into powder, put into Banbury mixer and carry out mixing 20-30min, mixing process adds the borax of 20-30 part at twice, add the borax of 30% for the first time, second time adds the borax of 70%, discharge is started when temperature reaches 530-550 DEG C, the material of discharging naturally cools to room temperature and obtains sizing material A, the silicon carbide of the silicon-dioxide of the polyvinyl chloride of 3-7 part, 30-40 part, the talcum powder of 10-20 part and 5-10 part is mixed the mixture that is ground into powder, put into Banbury mixer and carry out mixing 20-30min, mixing process adds the titanium dioxide of 8-12 part at twice, add the titanium dioxide of 70% for the first time, second time adds the titanium dioxide of 30%, start discharge when temperature reaches 560-570 DEG C, the material of discharge naturally cools to room temperature and obtains sizing material B, the centrifugal 10-20min of whizzer is put in sizing material A and sizing material B mixing and forms blend glue stuff, centrifugal rotational speed is 200-300r/min, and centrifugal simultaneous temperature maintains 600-620 DEG C, (2), repeatedly apply: blend glue stuff is diluted with water to mixing solutions, and the volume ratio of blend glue stuff and water is 1:50, with mixing solutions filling valve internal, and be uniformly mixed solution 5-9min, pour out mixing solutions, 3-5 time so repeatedly, dry valve internal.
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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 true CN105060714A (en) | 2015-11-18 |
| CN105060714B CN105060714B (en) | 2017-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106189545A (en) * | 2016-07-18 | 2016-12-07 | 安徽铜陵科力阀门有限责任公司 | For the composite coating of cast iron valve and prepare painting method |
Citations (4)
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| US7754345B2 (en) * | 2004-06-16 | 2010-07-13 | Jih-Hsin Tsai | Far infrared emitting nano glaze |
| CN103063079A (en) * | 2013-01-17 | 2013-04-24 | 南京圣诺热管有限公司 | Metal enamel heat transmission element and processing method thereof |
| CN103193387A (en) * | 2013-04-23 | 2013-07-10 | 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 |
| CN103992034A (en) * | 2013-02-18 | 2014-08-20 | 刘明程 | Preparation of negative ion-releasing cast iron enamel coating material |
-
2015
- 2015-08-14 CN CN201510497208.3A patent/CN105060714B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7754345B2 (en) * | 2004-06-16 | 2010-07-13 | Jih-Hsin Tsai | Far infrared emitting nano glaze |
| CN103063079A (en) * | 2013-01-17 | 2013-04-24 | 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 |
| CN103193387A (en) * | 2013-04-23 | 2013-07-10 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106189545A (en) * | 2016-07-18 | 2016-12-07 | 安徽铜陵科力阀门有限责任公司 | For the composite coating of cast iron valve and prepare painting method |
| 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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| CN105060714B (en) | 2017-05-17 |
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