CN1076886A - Steel-plastics combined integrative pipe and production method thereof - Google Patents
Steel-plastics combined integrative pipe and production method thereof Download PDFInfo
- Publication number
- CN1076886A CN1076886A CN 92107347 CN92107347A CN1076886A CN 1076886 A CN1076886 A CN 1076886A CN 92107347 CN92107347 CN 92107347 CN 92107347 A CN92107347 A CN 92107347A CN 1076886 A CN1076886 A CN 1076886A
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- steel
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- pipe fitting
- production method
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of corrosion resistant composite steel-plastic pipe fitting and production method thereof, pipe fitting box hat are the integral body that casting or seamless steel pipe and steel flange are welded, and plastic inner lining advances to be equipped with to loose core Integratively formed in the housing of mould with the plastic pressure injection of press after with preheating.Manufacturing mechanism of the present invention is simple, and is easy to process, reliable.Product appearance is good, intensity is high, long service life, and leaking to carry for the nothing of pipeline provides reliable assurance.
Description
The present invention relates to a kind of corrosion resistant composite steel-plastic pipe fitting and production method thereof.
Traditional composite steel-plastic pipe fitting comprises elbow, threeway, four-way, different from threeway, different from four-way etc.Its structure and production method are: the anti-rot plastic layer of pipe fitting inside is with after polypropylene or the telfon plastic pipe assembly unit welding, gives being placed on earlier in the housing.Shell is with in two symmetrical metallic case, and amalgamation is fixed through screw together, and the end flange of tightening up a screw is moulded flange and formed with the plastic welding lining of burn-oning again.Above-mentioned traditional pipe fitting has following major defect: 1, the inside lining anti-corrosive plastic layer is because the Plastic Welding performance is bad, and when being subjected to big pressure or temperature variation, the plastics weld seam ftractures easily and leakage phenomenon takes place, and working life is short.2, the pipe fitting shell has piece, poor sealing performance, and outward appearance is coarse, intensity is low.
The object of the present invention is to provide a kind of shell seamless, liner do not have weld seam, intensity height, withstand voltage, heatproof is poor, outward appearance is bright and clean, good seal performance, long service life, composite steel-plastic pipe fitting and production method thereof convenient for production.
Main technical schemes of the present invention is: the metal shell of pipe fitting adopts casting or with the seamless steel pipe through machining, docks electric welding and become complete pipe fitting shell, and the end standard flange that freezes then becomes whole outer steel shell.Clean inwall, pack into and take out heart mould.To give the good direct pressure injection of plastics semifluid of heat with press and go into to be equipped with to take out in the housing of heart mould, Integratively formed.The cooling back is extracted heart mould out, and plastics anticorrosive coat and inner walls are combined closely, and be in aggregates.
The outside box hat of pipe fitting of the present invention is complete, and seamless has improved intensity and withstand voltage properties than traditional two halves split casing, and outward appearance is bright and clean.Inner plastics anticorrosive coat is an integral body, and no plastics weld seam has overcome polypropylene, the bad shortcomings of Plastic Welding performance such as polytetrafluoroethylene.Manufacturing mechanism is simple, and is easy to process, reliable.The present invention leaks to carry for the nothing of pipeline provides reliable assurance, has prolonged pipe fitting working life, generally, carries the life-span of caustic acid, alkali, salt can reach 5-10.
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is the structure sectional view of composite steel-plastic pipe fitting elbow of the present invention.
Fig. 2 is the injection moulding erection drawing of composite steel-plastic pipe fitting elbow of the present invention.
Fig. 3 is the structure sectional view of composite steel-plastic pipe fitting four-way of the present invention.
Fig. 4 is a composite steel-plastic pipe fitting four-way injection moulding erection drawing of the present invention.
1 is housing among the figure, and 2 is the Standard Steel flange, and 3 is plastic inner lining, and 4,5,6 are and take out heart mould, and 7 is pressurizing piston, and 8 for through giving the plastics of heat, and 9 is barrel.
Embodiment 1 steel-plastics combined integrative pipe is an elbow.With reference to Fig. 1, Fig. 2.The housing 1 of this elbow adopts China's steel butt welding seamless elbow commonly used, after revising, two ends are with the electric welding Standard Steel flange 2 of burn-oning, whole outer steel shell, load onto the mould 4 of loosing core then, be placed on the oil hydraulic press workpiece, above casing drum 9, promote through giving the plastics 8 of heat by oil hydraulic press pressurizing piston 7, go into housing 1 and loose core between the mould 4 by the injecting hole pressure injection, make plastic inner lining 3 once-throughs, thickness more than 3mm, the mould 4 of loosing core after cooling.The mould 4 of loosing core is garden arc Cylinders, will extract out by garden arc direction with special device when loosing core.
Claims (2)
1, a kind of production method of composite steel-plastic pipe fitting is characterized by plastic inner lining and is and will give plastic pressure injection after the heat with press and advance to be equipped with to loose core Integratively formed in the housing of mould.
2, a kind of pipe fitting that is made of box hat and plastic inner lining is characterized by shell and is the integral body that casting or seamless steel pipe and steel flange are welded, and plastic inner lining is the integral body of single injection-molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107347 CN1076886A (en) | 1992-04-01 | 1992-04-01 | Steel-plastics combined integrative pipe and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107347 CN1076886A (en) | 1992-04-01 | 1992-04-01 | Steel-plastics combined integrative pipe and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1076886A true CN1076886A (en) | 1993-10-06 |
Family
ID=4942838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92107347 Pending CN1076886A (en) | 1992-04-01 | 1992-04-01 | Steel-plastics combined integrative pipe and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076886A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709042A (en) * | 2018-08-01 | 2018-10-26 | 山东柯林瑞尔管道工程有限公司 | One kind giving flanged fitting Lining device |
| CN111497219A (en) * | 2020-06-16 | 2020-08-07 | 山东菲纳科技发展有限公司 | Preparation method of steel pipe elbow lining |
| CN111750194A (en) * | 2020-07-07 | 2020-10-09 | 山东东宏管业股份有限公司 | Machining die, machining device and machining method for wear-resistant layer of iron tee joint lining |
-
1992
- 1992-04-01 CN CN 92107347 patent/CN1076886A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709042A (en) * | 2018-08-01 | 2018-10-26 | 山东柯林瑞尔管道工程有限公司 | One kind giving flanged fitting Lining device |
| CN111497219A (en) * | 2020-06-16 | 2020-08-07 | 山东菲纳科技发展有限公司 | Preparation method of steel pipe elbow lining |
| CN111750194A (en) * | 2020-07-07 | 2020-10-09 | 山东东宏管业股份有限公司 | Machining die, machining device and machining method for wear-resistant layer of iron tee joint lining |
| CN111750194B (en) * | 2020-07-07 | 2022-10-04 | 山东东宏管业股份有限公司 | Machining die, machining device and machining method for wear-resistant layer of iron tee joint lining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |