CN106189545A - For the composite coating of cast iron valve and prepare painting method - Google Patents
For the composite coating of cast iron valve and prepare painting method Download PDFInfo
- Publication number
- CN106189545A CN106189545A CN201610563527.4A CN201610563527A CN106189545A CN 106189545 A CN106189545 A CN 106189545A CN 201610563527 A CN201610563527 A CN 201610563527A CN 106189545 A CN106189545 A CN 106189545A
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- parts
- cast iron
- coating
- titanium dioxide
- iron valve
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/06—Polyethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/24—Titanium dioxide, e.g. rutile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses for the composite coating of cast iron valve and prepare painting method, it includes in parts by weight: the silicon dioxide of 10 20 parts, the Tissuemat E of 25 35 parts, the carborundum of 24 parts, the sodium stannate of 48 parts, the paraffin of 20 30 parts, the titanium dioxide of 26 parts, the Colophonium of 6 10 parts, the zinc oxide of 48 parts, the ceramic powders of 12 16 parts and the phenolic resin of 37 parts.The invention has the beneficial effects as follows and use ceramic powders to replace epoxy resin as the major ingredient of coating, improving anti-wear performance and the heat resistance of coating, coating has certain toughness, can resist stronger impact and not rupture, extend the range of application of cast iron valve.
Description
Technical field
The present invention relates to valve interior surface and process technique, composite coating and preparation thereof particularly for cast iron valve are coated with
Coating method.
Background technology
Valve (famen) is the control parts in fluid delivery system, has cut-off, regulation, water conservancy diversion, prevents countercurrently, surely
The functions such as pressure, shunting or overflow pressure relief.For the valve of fluid control systems, from simplest stop valve to extremely complex from
Various valves used in Ore-controlling Role, its kind and specification are the most various.Valve can be used for controlling sky gas and water, steam, various corruption
The flowing of all kinds fluids such as erosion property medium, mud, oil product, liquid metal and radiating medium.Valve also divides according to material
For cast iron valve, cast steel valve, stainless valve (201,304,316 etc.), chrome-molybdenum steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel
Valve, Plastic valve, nonstandard customized valve material such as grade.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, and general employing is sprayed paint or spray epoxy, and this valve surface processes technique not ring
Protecting, be easily generated secondary pollution, acid resistance, alkali resistance and salt tolerance are undesirable, are easily corroded under acid-alkali salt environment；Same hour hands
The defects such as the Minute pores that produces valve foundry goods in casting process, crackle are helpless, affect the smooth of valve interior surface
Degree.Above-mentioned technical barrier makes cast iron valve be normally only used for common civilian, industrial water drainage pipeline.
Chinese invention patent application CN201510497208.3 discloses the compound enamel for cast iron valve and system thereof
Standby painting method, it includes in parts by weight: the silicon dioxide of 30-40 part, the Pulvis Talci of 10-20 part, the carborundum of 5-10 part,
The sodium silicate of 15-25 part, the Borax of 20-30 part, the titanium dioxide of 8-12 part, the activated Calcium carbonate of 6-10 part, the oxidation of 4-8 part
Zinc, the epoxy resin of 12-16 part and the polrvinyl chloride of 3-7 part.Although acid resistance, alkali resistance and salt tolerance relatively traditional handicraft has
Improve, but wear-resisting the best with heat resistance, and be hit easy fragmentation.
Summary of the invention
The technical problem to be solved in the present invention is the coating formula of existing cast iron valve and prepares painting method existence
Many defects, a kind of composite coating for cast iron valve and prepare painting method is provided for this.
The technical scheme is that the composite coating for cast iron valve, it includes in parts by weight: 10-20 part
Silicon dioxide, the Tissuemat E of 25-35 part, the carborundum of 2-4 part, the sodium stannate of 4-8 part, the paraffin of 20-30 part, 2-6 part
Titanium dioxide, the Colophonium of 6-10 part, the zinc oxide of 4-8 part, the ceramic powders of 12-16 part and the phenolic resin of 3-7 part.
For cast iron valve composite coating prepare painting method, it comprises the following steps: (1), the preparation of batch mixing: will
The zinc oxide mix homogeneously of the ceramic powders of 12-16 part, the Colophonium of 6-10 part and 4-8 part is ground into powder mixture, puts into
10-20min it is incubated after being preheated to 200-250 DEG C with the speed of 4-6 DEG C/min in reactor, then with 80-100r/ under 2-4MPa
The speed stirring 20-30min of min forms batch mixing；(2), the preparation of sizing material: by the phenolic resin of 3-7 part, the dioxy of 10-20 part
The carborundum mix homogeneously of SiClx, the Tissuemat E of 25-35 part and 2-4 part is ground into powder mixture, puts into banbury
Carrying out mixing 10-15min, mixing process adds the titanium dioxide of 2-6 part at twice, adds the titanium dioxide of 40% for the first time,
Second time adds the titanium dioxide of 60%, starts discharge when temperature reaches 500-520 DEG C, and the material of discharge naturally cools to room temperature
Obtain sizing material；(3), the preparation of blend glue stuff: batch mixing and sizing material are mixed and puts into centrifuge centrifugal 6-8min formation epoxy glue
Material, centrifugal rotational speed is 100-140r/min, and while being centrifuged, temperature maintains 500-520 DEG C；(4), coating: cast iron valve is soaked
Take out after standing 20-30min in entering blend glue stuff, put into baking oven is dried at 120-130 DEG C and both must.
The invention has the beneficial effects as follows and use ceramic powders to replace epoxy resin as the major ingredient of coating, improve the resistance to of coating
Mill performance and heat resistance, coating has certain toughness, can resist stronger impact and not rupture, extend cast iron valve
Range of application, during coating use infiltration-dry so that uniform coating thickness.
Detailed description of the invention
For the composite coating of cast iron valve, it includes in parts by weight: the silicon dioxide of 10-20 part, 25-35 part poly-
Ethylene waxes, the carborundum of 2-4 part, the sodium stannate of 4-8 part, the paraffin of 20-30 part, the titanium dioxide of 2-6 part, the pine of 6-10 part
Perfume, the zinc oxide of 4-8 part, the ceramic powders of 12-16 part and the phenolic resin of 3-7 part.
For cast iron valve composite coating prepare painting method, it comprises the following steps: (1), the preparation of batch mixing: will
The zinc oxide mix homogeneously of the ceramic powders of 12-16 part, the Colophonium of 6-10 part and 4-8 part is ground into powder mixture, puts into
10-20min it is incubated after being preheated to 200-250 DEG C with the speed of 4-6 DEG C/min in reactor, then with 80-100r/ under 2-4MPa
The speed stirring 20-30min of min forms batch mixing；(2), the preparation of sizing material: by the phenolic resin of 3-7 part, the dioxy of 10-20 part
The carborundum mix homogeneously of SiClx, the Tissuemat E of 25-35 part and 2-4 part is ground into powder mixture, puts into banbury
Carrying out mixing 10-15min, mixing process adds the titanium dioxide of 2-6 part at twice, adds the titanium dioxide of 40% for the first time,
Second time adds the titanium dioxide of 60%, starts discharge when temperature reaches 500-520 DEG C, and the material of discharge naturally cools to room temperature
Obtain sizing material；(3), the preparation of blend glue stuff: batch mixing and sizing material are mixed and puts into centrifuge centrifugal 6-8min formation epoxy glue
Material, centrifugal rotational speed is 100-140r/min, and while being centrifuged, temperature maintains 500-520 DEG C；(4), coating: cast iron valve is soaked
Take out after standing 20-30min in entering blend glue stuff, put into baking oven is dried at 120-130 DEG C and both must.
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1: for the composite coating of cast iron valve, it includes in parts by weight: the silicon dioxide of 10 parts, 25 parts
Tissuemat E, the carborundum of 2 parts, the sodium stannate of 4 parts, the paraffin of 20 parts, the titanium dioxide of 2 parts, the Colophonium of 6 parts, the oxidation of 4 parts
Zinc, the ceramic powders of 12 parts and the phenolic resin of 3 parts.
For cast iron valve composite coating prepare painting method, it comprises the following steps: (1), the preparation of batch mixing: will
The zinc oxide mix homogeneously of the ceramic powders of 12 parts, the Colophonium of 6 parts and 4 parts is ground into powder mixture, puts into reactor
It is incubated 10min after being preheated to 200 DEG C with the speed of 4 DEG C/min, then stirs 20min formation with the speed of 80r/min under 2MPa
Batch mixing；(2), the preparation of sizing material: by the phenolic resin of 3 parts, the silicon dioxide of 10 parts, the Tissuemat E of 25 parts and the carbonization of 2 parts
Silicon mix homogeneously is ground into powder mixture, puts into banbury and carries out mixing 10min, and mixing process adds 2 at twice
The titanium dioxide of part, adds the titanium dioxide of 40% for the first time, and second time adds the titanium dioxide of 60%, when temperature reaches 500 DEG C
Time start discharge, the material of discharge naturally cools to room temperature and obtains sizing material；(3), the preparation of blend glue stuff: batch mixing and sizing material are mixed
Putting into the centrifugal 6min of centrifuge and form blend glue stuff, centrifugal rotational speed is 100r/min, and while being centrifuged, temperature maintains 500
℃；(4), coating: take out after standing 20min in cast iron valve is immersed blend glue stuff, put in baking oven and both dry at 120 DEG C
?.
Embodiment 2: for the composite coating of cast iron valve, it includes in parts by weight: the silicon dioxide of 15 parts, 30 parts
Tissuemat E, the carborundum of 3 parts, the sodium stannate of 6 parts, the paraffin of 25 parts, the titanium dioxide of 4 parts, the Colophonium of 8 parts, the oxidation of 6 parts
Zinc, the ceramic powders of 14 parts and the phenolic resin of 5 parts.
For cast iron valve composite coating prepare painting method, it comprises the following steps: (1), the preparation of batch mixing: will
The zinc oxide mix homogeneously of the ceramic powders of 14 parts, the Colophonium of 8 parts and 6 parts is ground into powder mixture, puts into reactor
It is incubated 15min after being preheated to 225 DEG C with the speed of 5 DEG C/min, then stirs 25min formation with the speed of 90r/min under 3MPa
Batch mixing；(2), the preparation of sizing material: by the phenolic resin of 5 parts, the silicon dioxide of 15 parts, the Tissuemat E of 30 parts and the carbonization of 3 parts
Silicon mix homogeneously is ground into powder mixture, puts into banbury and carries out mixing 12min, and mixing process adds 4 at twice
The titanium dioxide of part, adds the titanium dioxide of 40% for the first time, and second time adds the titanium dioxide of 60%, when temperature reaches 510 DEG C
Time start discharge, the material of discharge naturally cools to room temperature and obtains sizing material；(3), the preparation of blend glue stuff: batch mixing and sizing material are mixed
Putting into the centrifugal 7min of centrifuge and form blend glue stuff, centrifugal rotational speed is 120r/min, and while being centrifuged, temperature maintains 510
℃；(4), coating: take out after standing 25min in cast iron valve is immersed blend glue stuff, put in baking oven and both dry at 125 DEG C
?.
Embodiment 3: for the composite coating of cast iron valve, it includes in parts by weight: the silicon dioxide of 20 parts, 35 parts
Tissuemat E, the carborundum of 4 parts, the sodium stannate of 8 parts, the paraffin of 30 parts, the titanium dioxide of 6 parts, the Colophonium of 10 parts, 8 parts
Zinc oxide, the ceramic powders of 16 parts and the phenolic resin of 7 parts.
For cast iron valve composite coating prepare painting method, it comprises the following steps: (1), the preparation of batch mixing: will
The zinc oxide mix homogeneously of the ceramic powders of 16 parts, the Colophonium of 10 parts and 8 parts is ground into powder mixture, puts into reactor
It is incubated 20min after being preheated to 250 DEG C with the speed of 6 DEG C/min, then stirs 30min formation with the speed of 100r/min under 4MPa
Batch mixing；(2), the preparation of sizing material: by the phenolic resin of 7 parts, the silicon dioxide of 20 parts, the Tissuemat E of 35 parts and the carbonization of 4 parts
Silicon mix homogeneously is ground into powder mixture, puts into banbury and carries out mixing 15min, and mixing process adds 6 at twice
The titanium dioxide of part, adds the titanium dioxide of 40% for the first time, and second time adds the titanium dioxide of 60%, when temperature reaches 520 DEG C
Time start discharge, the material of discharge naturally cools to room temperature and obtains sizing material；(3), the preparation of blend glue stuff: batch mixing and sizing material are mixed
Putting into the centrifugal 8min of centrifuge and form blend glue stuff, centrifugal rotational speed is 140r/min, and while being centrifuged, temperature maintains 520
℃；(4), coating: take out after standing 30min in cast iron valve is immersed blend glue stuff, put in baking oven and both dry at 130 DEG C
?.
The invention ceramic powders, Colophonium and zinc oxide are formed in reactor batch mixing, by phenolic resin, two
Silicon oxide, Tissuemat E and carborundum form sizing material in banbury, then are mixed into blend glue stuff in centrifuge so that mixing
Sizing material has high-wear resistance and the high-fire resistance energy of ceramic powders, and the acid resistance of sizing material, alkali resistance and salt tolerance concurrently, extension
The range of application of cast iron valve, the painting method of step (4) can guarantee the high knot of coating and cast iron valve to greatest extent
Right, cast iron valve is immersed in blend glue stuff and stand again low temperature (120-130 DEG C) and dry that to may insure that coating is formed smooth
Degree, the uniformity and smoothness, the mechanical strength of coating is high, does not has shrinkage cavity and pin hole, and surface gloss is high.
Claims (2)
1., for the composite coating of cast iron valve, it is characterized in that it includes in parts by weight: the silicon dioxide of 10-20 part, 25-35
The Tissuemat E of part, the carborundum of 2-4 part, the sodium stannate of 4-8 part, the paraffin of 20-30 part, the titanium dioxide of 2-6 part, 6-10 part
Colophonium, the zinc oxide of 4-8 part, the ceramic powders of 12-16 part and the phenolic resin of 3-7 part.
2. the composite coating for cast iron valve as claimed in claim 1 prepare painting method, it is characterized in that it include with
Lower step: (1), the preparation of batch mixing: by the zinc oxide mix homogeneously of the ceramic powders of 12-16 part, the Colophonium of 6-10 part and 4-8 part
Be ground into powder mixture, puts into insulation 10-after reactor is preheated to 200-250 DEG C with the speed of 4-6 DEG C/min
20min, then stir 20-30min formation batch mixing with the speed of 80-100r/min under 2-4MPa；(2), the preparation of sizing material: by 3-
The carborundum mix homogeneously of phenolic resin, the silicon dioxide of 10-20 part, the Tissuemat E of 25-35 part and 2-4 part of 7 parts grinds
Powdered mixture, puts into banbury and carries out mixing 10-15min, and mixing process adds the titanium dioxide of 2-6 part at twice
Titanium, adds the titanium dioxide of 40% for the first time, and second time adds the titanium dioxide of 60%, starts when temperature reaches 500-520 DEG C
Discharge, the material of discharge naturally cools to room temperature and obtains sizing material；(3), the preparation of blend glue stuff: batch mixing and sizing material are mixed put into from
In scheming, centrifugal 6-8min forms blend glue stuff, and centrifugal rotational speed is 100-140r/min, and while being centrifuged, temperature maintains 500-
520℃；(4), coating: take out after standing 20-30min in cast iron valve is immersed blend glue stuff, put in baking oven at 120-130
Dry at DEG C and both obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610563527.4A CN106189545B (en) | 2016-07-18 | 2016-07-18 | The preparation coating method of composite coating for cast iron valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610563527.4A CN106189545B (en) | 2016-07-18 | 2016-07-18 | The preparation coating method of composite coating for cast iron valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106189545A true CN106189545A (en) | 2016-12-07 |
| CN106189545B CN106189545B (en) | 2019-04-30 |
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| CN201610563527.4A Active CN106189545B (en) | 2016-07-18 | 2016-07-18 | The preparation coating method of composite coating for cast iron valve |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101360796A (en) * | 2005-12-12 | 2009-02-04 | 纳米X有限公司 | Coating material for protecting metals, especially steel, from corrosion and/or scaling, method for coating metals and metal element |
| CN104610841A (en) * | 2015-01-20 | 2015-05-13 | 安徽斯瑞尔阀门有限公司 | Nano-ceramic-modified epoxy resin paint as well as application thereof to metal valves |
| CN105060714A (en) * | 2015-08-14 | 2015-11-18 | 铜陵天海流体控制股份有限公司 | Composite enamel for cast iron valve, and preparation and coating method for composite enamel |
| KR20160012718A (en) * | 2014-07-25 | 2016-02-03 | 강남제비스코 주식회사 | The painting method of leaf springs by anti-corrosive coating composition with high corrosion resistance |
-
2016
- 2016-07-18 CN CN201610563527.4A patent/CN106189545B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101360796A (en) * | 2005-12-12 | 2009-02-04 | 纳米X有限公司 | Coating material for protecting metals, especially steel, from corrosion and/or scaling, method for coating metals and metal element |
| KR20160012718A (en) * | 2014-07-25 | 2016-02-03 | 강남제비스코 주식회사 | The painting method of leaf springs by anti-corrosive coating composition with high corrosion resistance |
| CN104610841A (en) * | 2015-01-20 | 2015-05-13 | 安徽斯瑞尔阀门有限公司 | Nano-ceramic-modified epoxy resin paint as well as application thereof to metal valves |
| CN105060714A (en) * | 2015-08-14 | 2015-11-18 | 铜陵天海流体控制股份有限公司 | Composite enamel for cast iron valve, and preparation and coating method for composite enamel |
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| CN106189545B (en) | 2019-04-30 |
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