CN1857787A - Rotating production process of composite metal-plastic pipe - Google Patents
Rotating production process of composite metal-plastic pipe Download PDFInfo
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- CN1857787A CN1857787A CN 200610092101 CN200610092101A CN1857787A CN 1857787 A CN1857787 A CN 1857787A CN 200610092101 CN200610092101 CN 200610092101 CN 200610092101 A CN200610092101 A CN 200610092101A CN 1857787 A CN1857787 A CN 1857787A
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Abstract
The rotating production process of composite metal-plastic pipe includes the following steps: setting metal pipe on the rotary support before or after heating; adding plastic powder into the metal pipe before or after heating; rotating the metal pipe for plastic to be adhered onto the metal pipe; and cooling. The simple production process can produce composite metal-plastic pipe with high compactness, high anticorrosion performance and high durability. The production process is suitable for producing composite metal-plastic pipe of different sizes.
Description
The present invention relates to a kind of production method of composite metal-plastic pipe.
We know, composite metal-plastic pipe such as steel-plastics composite pipe, PAP etc., has strong corrosion resistant, when being used for industrial oil transportation, transfusion, liquid-transport pipe-line can not produce seepage or leakage phenomenon because of corrosion, thereby reduce the pollution of environment and the generation of security incident, save investment and maintenance cost, guarantee the pure of transfusion.When carrying, can not produce rust water and the people is caused healthy harm especially for running water, health and safety, long service life has the advantages such as high strength, rigidity, withstand voltage heatproof of metal or alloy pipe simultaneously again concurrently.Along with people to the attention of health and the enforcement and the industrial development of city quality classification water supply, composite metal-plastic pipe will be widely used.
At present, the production method of composite metal-plastic pipe generally is that plastic layer is prefabricated into plastic rigid pipe, through surface treatment polishing, gluing and metal tube suit, extracts air between inner and outer pipes again, heats compound cooling and shaping again and forms.But this method shortcoming is: operation is many and complicated, equipment that needs and special equipment are many and require high, investment is big, production efficiency is very low, and the production cost height is bonding between plastic rigid pipe and the metal tube, it cements airtight quality and is subject to produce each link influence, difficult control product quality easily causes between plastic rigid pipe and the metal tube and separates, so corrosion-resistant and poor durability.In addition, all can only produce some small-bore multiple tubes at present both at home and abroad, be that 1 meter, 2 meters or bigger multiple tube then can't suitability for industrialized production for some heavy calibers or super large caliber such as bore.
It is few and simple to the purpose of this invention is to provide a kind of operation, and the production efficiency height, cost is low, quality good and can carry out the production method of compound rotary composite metal-plastic pipe to various caliber size internal surface of pipe.
Purpose of the present invention can be achieved as follows: the production method of this rotary composite metal-plastic pipe comprises following processing step: the metal tube body is placed in it on runing rest before heating or after the heating; Body adds all molding powders of amount in the metal tube pipe before heating or after the heating, allow metal tube rotate to plastic bonding in the metal tube pipe; Obtain composite metal-plastic pipe after the cooling.
As a further improvement on the present invention: in the production method processing step of this rotary composite metal-plastic pipe before adding molding powder or add after the molding powder, the metal tube temperature reach make add molding powder fusing point get final product.
As a further improvement on the present invention: add in the production method processing step of this rotary composite metal-plastic pipe molding powder can disposable adding metal tube pipe in or in the muptiple-use adding metal tube pipe.
The present invention is by above-mentioned processing step, utilize metal tube in its pipe, adding molding powder under middle high temperature and the rotation status, because the metal tube temperature reaches the melting temperature of molding powder, molding powder softens substantially and becomes to be the latex fluid shape, and along with metal tube rotatablely moves, molding powder will be bonded on the inner surface of metal tube equably, and thickness basically identical, increase the amount of molding powder, plastic layer is correspondingly thickening just, and metal pipe internal surface and plastics will be combined into one securely.Therefore, the compactness of multiple tube is good, and separating can not appear in the plastics of metal tube and ectonexine, and quality is very reliable, corrosion-resistant and endurance quality utmost point Cui.Simultaneously, production process only needs three steps, and operation is few and very simple, specification requirement to workman and equipment is not high, easy to operate, the workman read through promptly can, production efficiency is very high, only needing heat, rotate, add equipment such as molding powder gets final product, these equipment are all very simple, small investment, thereby can reduce production costs greatly, if utilize automated control technology again, these equipment are easy to realize automatic assembly line production, will enhance productivity better.The characteristics and the advantage of this method maximum are: utilize metal tube rotation and heating, characteristic is bonded on the metal tube when utilizing the molding powder molten again, big small-bore multiple tube all can be produced arbitrarily, be not subjected to the restriction of process conditions and equipment, be particularly suitable for the metal composite pipe production of super large caliber or extra small bore.It is a kind of desirable production method to the metal pipe internal surface composite plastic layer.
The present invention is described in further detail below in conjunction with embodiment:
The production that with the bore is the zinc steel plastic pipe of 100CM is example.
The both ends horizontal ground of zinc-iron pipe is placed in respectively on the dop of runing rest, and dop is similar to the chuck on the lathe, and dop can rotate under driven by motor, thereby can drive the rotation of zinc-iron pipe.The simplest runing rest can be all to use every end of zinc-iron pipe two rotating shafts to prop up picking-up, and two rotating shafts will drive the rotation of zinc-iron pipe when rotating, and the distance between axles of certain two rotating shafts should guarantee can not fall down when the zinc-iron pipe rotates.Motor makes the rotation on runing rest of zinc-iron pipe, and the rotating speed size is decided by the caliber size of zinc-iron pipe, all can more than the rotating speed 2r/min.Zinc-iron pipe below is prosperous stove such as the coal furnace of burning that is provided with along zinc-iron length of tube direction, it is suitable that the zinc-iron pipe is heated to temperature, make zinc-iron tube edge rotation limit heating, purpose is to make zinc-iron pipe energy thermally equivalent, it is consistent that temperature everywhere can reach substantially, and helping molding powder can balance be bonded on the surface of zinc-iron pipe equably.Zinc-iron pipe heating-up temperature generally is heated to 100 ℃-450 ℃ more than 30 ℃, because this temperature range just can make big portion molding powder soften into the melting temperature of latex fluid shape, therefore the temperature of heating depends on the hot melt of molding powder.When the zinc-iron pipe is heated to temperature requiredly, during as 250 ℃ of left and right sides, just can in zinc-iron pipe pipe, add molding powder by charging spout.Its length direction of charging spout upper edge has notch one, is used for charging or discharging, and what the length of notch should be than zinc-iron pipe on it during only with a charging spout is bigger, and then the length sum is bigger than zinc-iron pipe range during with two, can feed in raw material simultaneously from zinc-iron pipe two ends.When adding molding powder, earlier charging spout is filled or made the amount of molding powder on the charging spout unit length equal substantially, then charging spout is sent in the zinc-iron pipe pipe together with molding powder, and rapidly charging spout is reversed with molding powder, make its notch downward, molding powder is just poured in the pipe entirely like this.Because the zinc-iron pipe is that rotation, along with the circular motion and the molding powder of zinc-iron pipe is subjected to the deadweight effect, add zinc-iron pipe temperature height, molding powder will stick on zinc-iron pipe circumferential inner surface, when the zinc-iron pipe continues to rotate to plastic bonding in the metal tube pipe, as after rotating the 20-40 commentaries on classics, molding powder will be emulsion state and be bonded in the pipe equably.Add molding powder can disposable adding metal tube pipe in or all can in the metal tube of the property adding several times pipe.In order to obtain better effect, then, also can seal zinc-iron Guan Yiduan, in pipe, add the air of certain pressure then from the other end, continue rotation for a moment, the plastic layer of Xing Chenging can be more firm like this.
After finishing above-mentioned each process, molding powder is integral at zinc-iron pipe surfaces externally and internally with regard to clinkering securely, thereby can obtain high-quality zinc-iron plastic composite.
Adopt above-mentioned principle steps, can finish the production of composite metal-plastic pipes such as PAP, Copper-plastic Composite Pipe, steel-plastics composite pipe equally, and the production of the composite metal-plastic pipe of various any caliber size.From the above, only need heating, adding molding powder, three basic steps of rotation can finish production of the present invention.
In addition, in order to strengthen firmness and the durability degree that bonds between metal tube and the molding powder, in the production process of the present invention, before adding molding powder, in the metal tube pipe that is rotating, add all PURs of amount earlier, perhaps when adding molding powder, in the metal tube pipe that is rotating, add all PURs of amount, by the good caking property of PUR general plastics more firmly are bonded on the metal pipe internal surface under the effect of PUR, the operating procedure that adds PUR is the same with the method that adds molding powder.
What need supplementary notes is, heating steps to metal tube can be finished before or after metal tube is placed in the runing rest step, reach temperature required as long as guarantee metal tube, electricity consumption, fire etc. heat all can, or take advantage of when the metal tube fresh baked or during the galvanized pipe fresh baked temperature be fit to produce also can, as long as the production procedure compactness all can.Equally, add the molding powder step and also can finish before or after heating steps in the metal tube pipe, therefore, the above-mentioned processing step of the present invention can be finished in no particular order, as long as after heating steps and adding molding powder step were finished, metal tube also continues rotation can finish production of the present invention.
Claims (3)
1, a kind of rotating production process of composite metal-plastic pipe is characterized in that: this production method comprises following processing step: the metal tube body is placed in it on runing rest before heating or after the heating; Body adds all molding powders of amount in the metal tube pipe before heating or after the heating, allow metal tube rotate to plastic bonding in the metal tube pipe; Obtain composite metal-plastic pipe after the cooling.
2, rotating production process of composite metal-plastic pipe according to claim 1 is characterized in that: before adding molding powder or add after the molding powder, the metal tube temperature reach make add molding powder fusing point get final product.
3, rotating production process of composite metal-plastic pipe according to claim 1 and 2 is characterized in that: described adding molding powder can disposable adding metal tube pipe in or in the muptiple-use adding metal tube pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610092101 CN1857787A (en) | 2006-05-28 | 2006-05-28 | Rotating production process of composite metal-plastic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610092101 CN1857787A (en) | 2006-05-28 | 2006-05-28 | Rotating production process of composite metal-plastic pipe |
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| CN1857787A true CN1857787A (en) | 2006-11-08 |
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| CN 200610092101 Pending CN1857787A (en) | 2006-05-28 | 2006-05-28 | Rotating production process of composite metal-plastic pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823309A (en) * | 2010-05-06 | 2010-09-08 | 蔡海华 | Improved metal plastic composite tube production method |
| CN104875314A (en) * | 2014-02-27 | 2015-09-02 | 靳宏杰 | Plastic-aluminum compounding method of plastic-aluminum composite heat radiator aluminum alloy section bar with fins arranged in pipeline |
| CN105711021A (en) * | 2016-01-04 | 2016-06-29 | 靳宏杰 | Plastic-aluminum composite method for aluminum alloy profile of which pipeline is provided with fins insides and outsides, for plastic-aluminum composite radiator |
-
2006
- 2006-05-28 CN CN 200610092101 patent/CN1857787A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823309A (en) * | 2010-05-06 | 2010-09-08 | 蔡海华 | Improved metal plastic composite tube production method |
| CN104875314A (en) * | 2014-02-27 | 2015-09-02 | 靳宏杰 | Plastic-aluminum compounding method of plastic-aluminum composite heat radiator aluminum alloy section bar with fins arranged in pipeline |
| CN104875314B (en) * | 2014-02-27 | 2019-03-29 | 靳宏杰 | It is a kind of to mould the modeling aluminium complex method for having fin in aluminium composite heating radiator aluminium alloy extrusions pipeline |
| CN105711021A (en) * | 2016-01-04 | 2016-06-29 | 靳宏杰 | Plastic-aluminum composite method for aluminum alloy profile of which pipeline is provided with fins insides and outsides, for plastic-aluminum composite radiator |
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Open date: 20061108 |