CN104976439A - Production method for anticorrosive nodular cast iron pipe - Google Patents
Production method for anticorrosive nodular cast iron pipe Download PDFInfo
- Publication number
- CN104976439A CN104976439A CN201510269728.9A CN201510269728A CN104976439A CN 104976439 A CN104976439 A CN 104976439A CN 201510269728 A CN201510269728 A CN 201510269728A CN 104976439 A CN104976439 A CN 104976439A
- Authority
- CN
- China
- Prior art keywords
- iron pipe
- cast iron
- ductile iron
- nodular cast
- coating
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
-
- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a production method for an anticorrosive nodular cast iron pipe and relates to the technical field of metal corrosion resistance. The production method comprises the steps that firstly, the surface of a nodular cast iron pipe base body is subjected to sand blasting treatment; secondly, the surface of the nodular cast iron pipe base body is blown clean through compressed air; and thirdly, the nodular cast iron pipe base body is heated to 50-55 DEG C; a component A and a component B of a polyurethane anticorrosive coating are mixed evenly according to the proportion of one to one, an airless sprayer is used for evenly spraying the coating onto the surface of the nodular cast iron pipe base body, and construction is carried out in a one-layer multipass spraying mode. Compared with the prior art, the coating is sprayed onto the nodular cast iron pipe base body uniformly and is high in adhesive force; the nodular cast iron pipe produced through the method is high in corrosion resistance; a corrosion resistant coating layer of the nodular cast iron pipe is not prone to stripping, and operation is easy and convenient.
Description
Technical field
The present invention relates to technical field of metal anti-corrosion, especially a kind of production method of corrosion resistant ductile iron pipe.
Background technique
Ductile iron pipe has the essence of iron, the performance of steel, the ductile iron pipe after annealing, and its metallographic structure is that ferrite adds a small amount of pearlite, satisfactory mechanical property, ductility is good, good sealing effect, install simple and easy, be mainly used in municipal administration, industrial and mining enterprise's feedwater, gas transmission, oil transportation etc.Because the ductile iron pipe decay resistance produced at present is lower, surface is easily corroded and gets rusty.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of production method of corrosion resistant ductile iron pipe, lower with the ductile iron pipe decay resistance solving the production of existing method, the surperficial problem of getting rusty that is easily corroded.
In order to solve the problem, the technical solution used in the present invention is: the production method of this corrosion resistant ductile iron pipe, comprises the following steps:
A. carry out sand blast to the surface of ductile iron pipe matrix, derusting grade reaches Sa2.5, surperficial depth of abrasion pattern 40 μm ~ 70 μm;
B. blow clean with the surface of pressurized air by ductile iron pipe matrix,
C. ductile iron pipe matrix is heated to 50 DEG C ~ 55 DEG C;
D. A, B two kinds of components of anti-corrosion polyurethane coating are mixed by 1:1, with airless sprayer by the surface of coating even application at ductile iron pipe matrix, construct by the spraying method of one deck multiple tracks, per pass coating thickness is 60 μm ~ 80 μm, 3min ~ 4, interval min sprays together, sprays 6 roads, road ~ 8;
E. treat that the coating of ductile iron pipe matrix surface parches, obtain this corrosion resistant ductile iron pipe.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
The present invention carries out sand blast to the surface of ductile iron pipe matrix, and is heated 50 DEG C ~ 55 DEG C, guarantees the adhesion of coating on ductile iron pipe matrix; With airless sprayer by the surface of coating even application at ductile iron pipe matrix, construct by the spraying method of one deck multiple tracks, coating is made to apply evenly on ductile iron pipe matrix, strong adhesion, the corrosion resistant ductile iron pipe antiseptic property that the method is produced is high, its anticorrosive paint layer difficult drop-off, and simple to operation.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
A production method for corrosion resistant ductile iron pipe, concrete steps are as follows:
A. carry out sand blast to the surface of ductile iron pipe matrix, derusting grade reaches Sa2.5, surperficial depth of abrasion pattern 40 μm;
B. blow clean with the surface of pressurized air by ductile iron pipe matrix,
C. ductile iron pipe matrix is heated to 50 DEG C;
D. A, B two kinds of components of anti-corrosion polyurethane coating are mixed by 1:1, with airless sprayer by the surface of coating even application at ductile iron pipe matrix, construct by the spraying method of one deck multiple tracks, per pass coating thickness is 60 μm, interval 3min sprays together, sprays 6 roads;
E. treat that the coating of ductile iron pipe matrix surface parches, obtain this corrosion resistant ductile iron pipe.
Embodiment 2
A production method for corrosion resistant ductile iron pipe, concrete steps are as follows:
A. carry out sand blast to the surface of ductile iron pipe matrix, derusting grade reaches Sa2.5, surperficial depth of abrasion pattern 70 μm;
B. blow clean with the surface of pressurized air by ductile iron pipe matrix,
C. ductile iron pipe matrix is heated to 55 DEG C;
D. A, B two kinds of components of anti-corrosion polyurethane coating are mixed by 1:1, with airless sprayer by the surface of coating even application at ductile iron pipe matrix, construct by the spraying method of one deck multiple tracks, per pass coating thickness is 80 μm, interval 4 min sprays together, sprays 8 roads;
E. treat that the coating of ductile iron pipe matrix surface parches, obtain this corrosion resistant ductile iron pipe.
Claims (1)
1. a production method for corrosion resistant ductile iron pipe, is characterized in that comprising the following steps:
A. carry out sand blast to the surface of ductile iron pipe matrix, derusting grade reaches Sa2.5, surperficial depth of abrasion pattern 40 μm ~ 70 μm;
B. blow clean with the surface of pressurized air by ductile iron pipe matrix,
C. ductile iron pipe matrix is heated to 50 DEG C ~ 55 DEG C;
D. A, B two kinds of components of anti-corrosion polyurethane coating are mixed by 1:1, with airless sprayer by the surface of coating even application at ductile iron pipe matrix, construct by the spraying method of one deck multiple tracks, per pass coating thickness is 60 μm ~ 80 μm, 3min ~ 4, interval min sprays together, sprays 6 roads, road ~ 8;
E. treat that the coating of ductile iron pipe matrix surface parches, obtain this corrosion resistant ductile iron pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269728.9A CN104976439A (en) | 2015-05-25 | 2015-05-25 | Production method for anticorrosive nodular cast iron pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269728.9A CN104976439A (en) | 2015-05-25 | 2015-05-25 | Production method for anticorrosive nodular cast iron pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104976439A true CN104976439A (en) | 2015-10-14 |
Family
ID=54273229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510269728.9A Pending CN104976439A (en) | 2015-05-25 | 2015-05-25 | Production method for anticorrosive nodular cast iron pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104976439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860448A (en) * | 2019-11-26 | 2020-03-06 | 芜湖新兴铸管有限责任公司 | Novel polyurethane coating process for nodular cast iron pipe fitting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1167795A (en) * | 1997-04-24 | 1997-12-17 | 北京市北上防水防腐涂料厂 | Process for producing polyurethane coating of corrosion-resistant type |
| CN1490369A (en) * | 2002-10-14 | 2004-04-21 | 大庆油田长垣建材有限公司 | Preparation for anticorrosive protective spraying material and constructing method thereof |
| CN1736618A (en) * | 2004-08-16 | 2006-02-22 | 管道株式会社 | Synthetic resin coated foundry iron pipe and its production method |
| CN101108377A (en) * | 2006-07-17 | 2008-01-23 | 长沙科星纳米工程技术有限公司 | Production technology of steel tube with high-elasticity heat-resistant anti-corrosion abrasion-proof nano composite material coating |
| CN101169030A (en) * | 2007-08-28 | 2008-04-30 | 大庆油田创业金属防腐有限公司 | Method for preparing magnetic scale-inhibiting wax-proof antisepsis oil pipe used for oil field |
-
2015
- 2015-05-25 CN CN201510269728.9A patent/CN104976439A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1167795A (en) * | 1997-04-24 | 1997-12-17 | 北京市北上防水防腐涂料厂 | Process for producing polyurethane coating of corrosion-resistant type |
| CN1490369A (en) * | 2002-10-14 | 2004-04-21 | 大庆油田长垣建材有限公司 | Preparation for anticorrosive protective spraying material and constructing method thereof |
| CN1736618A (en) * | 2004-08-16 | 2006-02-22 | 管道株式会社 | Synthetic resin coated foundry iron pipe and its production method |
| CN101108377A (en) * | 2006-07-17 | 2008-01-23 | 长沙科星纳米工程技术有限公司 | Production technology of steel tube with high-elasticity heat-resistant anti-corrosion abrasion-proof nano composite material coating |
| CN101169030A (en) * | 2007-08-28 | 2008-04-30 | 大庆油田创业金属防腐有限公司 | Method for preparing magnetic scale-inhibiting wax-proof antisepsis oil pipe used for oil field |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局；中国国家标准管理委员会: "球墨铸铁管和管件聚氨酯涂层", 《中华人民共和国国家标准GB/T24596-2009》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860448A (en) * | 2019-11-26 | 2020-03-06 | 芜湖新兴铸管有限责任公司 | Novel polyurethane coating process for nodular cast iron pipe fitting |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151014 |
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| WD01 | Invention patent application deemed withdrawn after publication |