CN1111262C - Compound steel pipe and pipe elements with liner of glass scales and resin, and making method thereof - Google Patents
Compound steel pipe and pipe elements with liner of glass scales and resin, and making method thereof Download PDFInfo
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- CN1111262C CN1111262C CN00111401A CN00111401A CN1111262C CN 1111262 C CN1111262 C CN 1111262C CN 00111401 A CN00111401 A CN 00111401A CN 00111401 A CN00111401 A CN 00111401A CN 1111262 C CN1111262 C CN 1111262C
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- resin
- liner
- engineering plastics
- pipe
- glass flake
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Abstract
The present invention discloses a compound steel tube and a tube fitting with inner linings made from glass scale resins, and a manufacturing method thereof. The compound steel tube and the tube fitting are composed of an outer steel tube and an inner lining made from glass scale resins, wherein the glass scale resins are the solidified substances of the mixture of thermosetting resins, glass scales and other additives, and the compound steel tube and the tube fitting having outstanding anticorrosion properties and mechanical properties which are superior to that of 18 to 8 stainless steel and ceramic inner lining steel tubes. The cost of the compound steel tube and the tube fitting are only 30% and 50% of that of the stainless steel and the ceramic inner lining steel tubes.
Description
Technical field
The invention belongs to composite steel tube and manufacturing technology field thereof, relate to a kind of composite steel tube and manufacture method thereof with corrosion-proof lining.
Background technique
As everyone knows, in industries such as oil, chemical industry, metallurgy, mine, electric power, need the prepared pipeline of various materials to carry a large amount of Korrosionsmediums usually.Existing steel can not satisfy application request usually because of problems such as performance and prices, as carbon steel tube, though low price, its poor corrosion resistance, Stainless Steel Tube then costs an arm and a leg, and the not caused stress corrosion of anti-chlorine ion.For addressing this problem, people use the corrosion that line with rubber, plastic lining composite steel pipe are resisted medium always.For example Chinese patent (CN87107640A, CN1032812A) discloses a kind of method of making steel-plastic composite pipe in the steel pipe that plastic tube is set in, it can be the technology of the steel pipe inwall coating one deck plastics below the 350mm with diameter that Chinese patent (CN2044207U) has been introduced a kind of, and Chinese patent (CN1095011A) discloses the technical matters of different length inner lining of steel pipe rubber.Above-mentioned composite steel tube all exists fairly obvious defective, the thermal expansion coefficient of rubber and plastics is far above the thermal expansion coefficient of carbon steel tube, therefore when higher or frequent fluctuation changed in temperature, line with rubber layer or plastic lining layer were peeled off to spoil with steel pipe easily and are fallen into inefficacy, disablement; In addition, adhesive aging, polyethylene, polypropylene, poly fourfluoroplastics and steel pipe cohesive force are relatively poor, have influenced line with rubber, plastic lining composite steel pipe working life.
Japan Patent (J8047550, J59218840, J62086172, J63089680), U. S. Patent (US4043353, US4142556) and Chinese patent (CN1059376A) etc. a kind of ceramic-lined steel pipe that utilizes the preparation of aluminothermy one centrifugal casting technique is disclosed, pottery has good anticorrosion antiwear performance, making ceramic lining-tube is that solution tubing is anti-corrosion, one of effective ways of wear-resisting problem, its principle is to utilize reducing metal and iron oxide generation exothermic reactions such as Al or Mg, and relying on reaction heat with reaction product iron and aluminium oxide fusion, action of centrifugal force makes the two layering, because of Al
2O
3Proportion is little, and the inwall that is distributed in steel pipe forms ceramic lining, and the bigger iron rule of proportion is distributed in and forms transition zone between steel pipe matrix and the pottery, and pottery and steel pipe are combined.But because reaction is very fast, the fusing point of aluminium oxide is very high, causes the reaction product melting time extremely short, and therefore general persistence 2-5 was difficult in this extremely short time and forms the compact aluminum oxide coating about second; In addition, the rapid change of Yin Wendu is different with thermal expansion coefficient, and steel pipe produces very big systolic pressure to ceramic layer, cause the coating top layer crackle to occur, because the existence of pore and crackle makes ceramic lining can not resist the infiltration of aggressive medium, the result causes the forfeiture of composite steel tube antiseptic power.So, all the steel pipe of aluminothermic-centrifugalization preparation is used as the conveying that wear-resisting pipe is applied to the dust medium both at home and abroad at present, can't be used for carrying corrosive liquid medium;
Chinese patent 97106643.4 discloses a kind of composite steel tube that is coated with one deck thermosetting resin in ceramic lining-tube, to solve the existing defective of above-mentioned patent, but find in actual use, said composite steel tube production technology is comparatively complicated, cost of production is higher, is difficult for large-scale promotion and uses.
Glass resin flake is the most important long-acting heavy anticorrosive material of generally acknowledging in the world at present, and it has good chemical resistance, and the media such as acid, alkali and salt of atmosphere, water and general concentration are all had good adaptability.Compare with general resin, the glass resin flake most important character is its permeability with extremely good corrosion-resistant medium, in addition, it also has good wearability, and shrinkage is little during sclerosis, the cementability of lining and matrix is good, spalling resistance is good, good advantages such as construction technology, and it is cheap, thermal expansion coefficient and steel are close, have obtained application in many large-scale anticorrosion equipments.Yet, since the particularity of pipe production (operating environment is little, and general coating process is difficult to make it to form uniform coating, the check difficulty), therefore, the application of glass resin flake on pipeline and pipe fitting is restricted, and still do not have the patent of this respect and the report of document at present.
Summary of the invention
One of purpose of the present invention is to overcome the deficiencies in the prior art, and providing that a kind of preparation process is simple, cost of production is lower, it is that large-scale promotion is used to be easy to, having by thermosetting resin and glass flake is the composite steel tube and the pipe fitting of the engineering plastics liner that forms of the main mixture of forming, curing;
Two of purpose of the present invention is to disclose a kind of preparation method with composite pipe fitting of the engineering plastics liner that contains glass flake.
Basic design of the present invention is such:
(1) use thermosetting resin as binder, with the glass flake is bulking agent, be aided with other additive, be made into the thermosetting property glass resin flake, adopt Chinese patent 97106643.4 disclosed technology to make the composite steel tube of the engineering plastics liner that contains glass flake then;
(2) using thermosetting resin as binder, is bulking agent with the glass flake, is aided with other additive, be made into the thermosetting property glass resin flake, be injected into then in the pipe fitting that has core, keep certain pressure, it is solidified, make the composite pipe fitting of the engineering plastics liner that contains glass flake.
Below will the structure and the preparation method of said composite steel tube and pipe fitting be described in detail.
Said composite steel tube of the present invention or pipe fitting are made of the outer tube of a steel and an engineering plastics liner that contains glass flake, and the port of said composite steel tube or pipe fitting also is provided with the flange that has the engineering plastics flange as required.Said engineering plastics are that the mixture by a class thermosetting resin and glass flake and other additive is heating and curing and forms, said thermosetting resin can adopt general thermosetting resin, comprise unsaturated polyester resin, epoxy resin, in furan or the phenolic resin etc. one or more, also can adopt their modified resin, as modified epoxy and phenol-formaldehyde resin modified etc.; The thickness of said glass flake is 2～5 μ m, and particle diameter is 0.1～3mm, and the content of glass flake in said resin is 10%～70% (weight ratio).Said pipe fitting comprises bend pipe, threeway, four-way and reducer pipe etc.
The mixture of forming for compose a piece of writing convenient thermosetting resin that will prepare and glass flake and other additive abbreviates the resin that contains glass flake as or directly abbreviates resin as below, and the material that forms through being heating and curing abbreviates the engineering plastics that contain glass flake as or further abbreviates engineering plastics as.
Description of drawings
Fig. 1 is the cut-away view of composite steel tube, and Fig. 2 is the cross-sectional view of composite steel tube, and Fig. 3 is the pipe fitting cut-away view, wherein:
1---outer tube
2---flange
3---contain the engineering plastics liner of glass flake or abbreviate the engineering plastics liner as
As seen from the figure, said composite steel tube or pipe fitting are made of outer tube 1, the engineering plastics liner 3 that contains glass flake, and the thickness of engineering plastics liner 3 is 0.5-3mm.The engineering plastics liner 3 that contains glass flake sticks to the inwall of outer tube 1, has formed the liner that one deck has excellent antisepsis.
Said composite steel tube can be prepared according to Chinese patent 97106643.4 disclosed technology.
Preparation process is summarized as follows:
(1) the steel pipe port is burn-on flange, and with the sealing of end cap and gasket seal, end cap scribbles releasing agent, gasket seal makes between steel pipe flange and the end cap end face and has the gap, the size in gap depends on the thickness of pad, after resin is full of this clearance cure, just can form flange facing with engineering plastics flange;
(2) with vacuum pump steel duct is vacuumized, reach the requirement of certain vacuum degree after, by the resin suction pipe on the end cap resin for preparing is sucked in the steel pipe;
(3) steel pipe that will suck resin places centrifugal rotation on the centrifuge, takes end cap apart after waiting resin solidification, can obtain the said engineering plastics lined composite steel tube that contains glass flake.
The said engineering plastics composite pipe fitting that contains glass resin flake then can adopt method as shown in Figure 4 to be prepared:
Wherein:
4---gasket seal
5---end cap
6---the resin suction pipe
7---core
(1) port of steel pipe fittings is burn-on flange 2, with the core 7 said pipe fitting of packing into, port seals with end cap 5 and gasket seal 4, end cap 5 and core 7 scribble releasing agent, gasket seal 4 makes between steel pipe flange and the end cap end face and has the gap, the size in gap depends on the thickness of gasket seal 4, after resin is full of this clearance cure, just forms engineering plastics flange flange sealing surface;
(2) by the resin suction pipe 6 on the end cap 5 resin for preparing is injected in the pipe fitting, and make the pressure in the pipe fitting remain on 0.1～0.5MPa, up to resin solidification, be that the type by resin is determined curing time, different resins has different curing times, and this is very easy decision for general technician.
(3) behind the resin solidification, take end cap 5 apart, extract core 7 out, can obtain the said engineering plastics inner liner compound pipe part that contains glass flake.
The said resin that contains glass flake be formulated as a kind of prior art, existing detailed report in " anticorrosion engineering design and novel practical technology " book, the present invention repeats no more, and the addition of resin can be determined by calculating according to the thickness of the internal diameter of pipeline and pipe fitting and required lining.
Said composite steel tube and the pipe fitting with liner engineering plastics of the present invention has excellent antiseptic property and mechanical property, at room temperature, is immersed in 40%H respectively
2SO
4With 20%HCl, 20%HNO
3In one month, corrosion weight loss is respectively 1.36mg/m
2/ hr, 2.48mg/m
2/ hr and 3.81mg/m
2/ hr is much better than 18-8 stainless steel and ceramic-lined steel pipe.And its cost of production only is 30% and 50% of stainless steel and a ceramic-lined steel pipe.
Embodiment
Further illustrate content of the present invention below in conjunction with embodiment:
Embodiment 1
With diameter is the steel pipe of the 76mm flange 2 of burn-oning, and adds gasket seal 4, end cap 5, vacuumizes after the affixed sealing; Get 150g vinyl esters unsaturated polyester resin, 50g glass flake, 3g cobalt naphthenate and 3g methyl-ethyl ketone peroxide and place the container mixing, obtain the homogeneous mixture, be called for short resin, suck in the steel pipe with vacuum then, the steel pipe that sucks resin placed on the centrifuge rotate, use the flame heating outer tube.After resin fully solidifies, take off steel pipe, take end cap apart, promptly obtain having the composite steel tube of the flanged flange of engineering plastics liner.At room temperature be soaked in 40% H
2SO
4In the solution, this product corrosion rate is 1.38mg/m
2/ hr.
With diameter is the threeway of the 89mm flange 2 of burn-oning, and inserts core 7, adds gasket seal 4, end cap 5, and affixed sealing is afterwards stand-by; Get 400gE-44 epoxy resin, 150g glass flake, 40g toluene, 100g diamines place the container mixing, inject threeway, under the pressure of 0.5MPa, solidified 12 hours, can obtain said pipe fitting, under the condition of room temperature and 20%HCl, this product corrosion rate is 2.45mg/m
2/ hr.
Get the 100g furfuryl alcohol resin, 40g glass flake, 10g ethyl-sulfate place the container mixing, adopt the method identical with embodiment 2 to make composite pipe fitting, and under the condition of room temperature and 20%HCl, this product corrosion rate is 1.87mg/m2/hr.
Embodiment 4
Get 100g phenolic resin, 30g glass flake, 10g ethyl-sulfate place the container mixing, adopt the method identical with embodiment 2 to make composite pipe fitting, and under the condition of room temperature and 20%HNO3, this product corrosion rate is 3.83mg/m2/hr.
Embodiment 5
Get 70gE-44 epoxy resin, 30g phenolic resin, 50g glass flake, 7g dimethylbenzene, 12g diethylenetriamine place the container mixing, adopt the method identical with embodiment 2 to make composite pipe fitting, under the condition of room temperature and 20%HCl, this product corrosion rate is 2.36mg/m2/hr.
Obviously, according to design of the present invention and disclosed embodiment,, the professional workforce has the composite steel tube and the pipe fitting of anti-corrosion function about can adopting the resins of other types easily.
Claims (6)
1. engineering plastics lined composite steel tube that contains glass flake, constituted by outer tube (1) and liner with antisepsis, it is characterized in that: said liner is a kind of engineering plastics liner (3) that contains glass flake, and the engineering plastics liner (3) with antisepsis sticks to the inwall of outer tube (1).
2. engineering plastics inner liner compound pipe part that contains glass flake, constituted by outer tube (1) and liner with antisepsis, it is characterized in that: said liner is a kind of engineering plastics liner (3) that contains glass flake, and the engineering plastics liner (3) with antisepsis sticks to the inwall of outer tube (1).
3. composite steel tube as claimed in claim 1 is characterized in that: the port of said composite steel tube also is provided with the flange (2) that has engineering plastics liner (3) flange.
4. pipe fitting as claimed in claim 2 is characterized in that: the port of said pipe fitting also is provided with the flange (2) that has engineering plastics liner (3) flange.
5. as claim 1 or 2 or 3 or 4 described composite steel tube or pipe fittings, it is characterized in that: said engineering plastics liner (3) is mainly formed by the mixture solidified of thermosetting resin and glass flake, said thermosetting resin comprises unsaturated polyester resin, epoxy resin, furan, in phenolic resin or their modified resin one or more, the thickness of said glass flake is 2～5 μ m, particle diameter is 0.1～3mm, the content of glass flake in said resin is 10%～70% weight ratio, and the thickness of engineering plastics liner (3) is 0.5--3mm.
6. as the preparation method of claim 2 or 4 described pipe fittings, it is characterized in that may further comprise the steps successively:
(1) port of steel pipe fittings is burn-on flange (2), with core (7) the said pipe fitting of packing into, port seals with end cap (5) and gasket seal (4), and end cap (5) and core (7) scribble releasing agent, and gasket seal (4) makes between steel pipe flange and end cap (5) interior edge face and has the gap;
(2) mixture that contains glass resin flake that will prepare by the resin suction pipe (6) on the end cap (5) injects in the pipe fitting, and makes the pressure in the pipe fitting remain on 0.1～0.5MPa, up to resin solidification;
(3) behind the resin solidification, take end cap (5) apart, extract core (7) out, can obtain the said engineering plastics inner liner compound pipe part that contains glass flake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00111401A CN1111262C (en) | 2000-01-01 | 2000-01-01 | Compound steel pipe and pipe elements with liner of glass scales and resin, and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00111401A CN1111262C (en) | 2000-01-01 | 2000-01-01 | Compound steel pipe and pipe elements with liner of glass scales and resin, and making method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1262408A CN1262408A (en) | 2000-08-09 |
| CN1111262C true CN1111262C (en) | 2003-06-11 |
Family
ID=4581315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00111401A Expired - Fee Related CN1111262C (en) | 2000-01-01 | 2000-01-01 | Compound steel pipe and pipe elements with liner of glass scales and resin, and making method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1111262C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396725C (en) * | 2006-01-13 | 2008-06-25 | 上海昭和高分子有限公司 | Surface treatment method of scale resin with glass scale and prepn process of scale resin |
| CN101643615B (en) * | 2008-08-06 | 2011-08-17 | 中国科学院金属研究所 | Polyaniline modified glass flake heavy-duty anti-corrosive coating and preparation method thereof |
| CN101643621B (en) * | 2008-08-06 | 2011-08-24 | 中国科学院金属研究所 | Polyester heavy-duty anticorrosive coating with polyaniline-modified glass flakes, and preparation method thereof |
| CN101900227B (en) * | 2010-02-09 | 2014-09-17 | 徐州胜海机械制造科技有限公司 | Ceramics particle strengthened composite material lining metal tube and manufacturing method thereof |
| CN105312583A (en) * | 2014-08-04 | 2016-02-10 | 吴雯雯 | High-performance powder metallurgy gear convenient to assemble |
| CN106318138A (en) * | 2016-08-23 | 2017-01-11 | 浙江德创环保科技股份有限公司 | Ceramic compound steel pipe and processing technology thereof |
| CN109723924B (en) * | 2018-10-16 | 2022-03-15 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Carbon fiber elbow for ship and manufacturing method thereof |
| CN110894901B (en) * | 2019-11-27 | 2021-10-22 | 成都龙之泉科技股份有限公司 | Anticorrosive type pipeline repair hose |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4670315A (en) * | 1984-12-13 | 1987-06-02 | Hochtief Aktiengesellschaft Vorm, Gebr. Helfmann | Process for providing a synthetic resin coating on a concrete structure |
| CN1073702A (en) * | 1991-12-27 | 1993-06-30 | 中国石油天然气总公司工程技术研究所 | Glass flake anticorrosion paint and manufacture method thereof |
| CN2250952Y (en) * | 1994-02-01 | 1997-04-02 | 国家建筑材料工业局秦皇岛玻璃研究院 | Device for manufacturing glass scales |
| CN1178877A (en) * | 1996-10-03 | 1998-04-15 | 杨广顺 | Method for producing scaly glass fibre reinforced plastic tube |
-
2000
- 2000-01-01 CN CN00111401A patent/CN1111262C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4670315A (en) * | 1984-12-13 | 1987-06-02 | Hochtief Aktiengesellschaft Vorm, Gebr. Helfmann | Process for providing a synthetic resin coating on a concrete structure |
| CN1073702A (en) * | 1991-12-27 | 1993-06-30 | 中国石油天然气总公司工程技术研究所 | Glass flake anticorrosion paint and manufacture method thereof |
| CN2250952Y (en) * | 1994-02-01 | 1997-04-02 | 国家建筑材料工业局秦皇岛玻璃研究院 | Device for manufacturing glass scales |
| CN1178877A (en) * | 1996-10-03 | 1998-04-15 | 杨广顺 | Method for producing scaly glass fibre reinforced plastic tube |
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| Publication number | Publication date |
|---|---|
| CN1262408A (en) | 2000-08-09 |
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