CN101850613A - High-frequency induction welding method for metal plastic composite pipe - Google Patents
High-frequency induction welding method for metal plastic composite pipe Download PDFInfo
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- CN101850613A CN101850613A CN201010172281A CN201010172281A CN101850613A CN 101850613 A CN101850613 A CN 101850613A CN 201010172281 A CN201010172281 A CN 201010172281A CN 201010172281 A CN201010172281 A CN 201010172281A CN 101850613 A CN101850613 A CN 101850613A
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- composite metal
- pipe
- plastic pipe
- frequency induction
- welding
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- 229920003023 plastic Polymers 0.000 title claims abstract description 78
- 239000004033 plastic Substances 0.000 title claims abstract description 78
- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 238000003466 welding Methods 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000006698 induction Effects 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000004927 fusion Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract 2
- 230000037431 insertion Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005067 remediation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a high-frequency induction welding method of a metal plastic composite pipe, which belongs to a pipeline connecting method, and the existing welding method is difficult to be used for welding the metal plastic composite pipe with full specification. The metal plastic composite pipe is inserted into the receiving port of the pipe fitting, and then the insertion part is heated and welded, so that the implementation is easy; the structures of the pipe fittings and the pipes are unchanged, and the manufacturing is easy; the welding device is suitable for welding metal plastic composite pipes and pipe fittings with various specifications; the double-sided sealing is easy to realize; if the welding quality is not good and water leakage or seepage is caused, the insertion part can be heated again to implement remediation.
Description
Technical field
The invention belongs to pipe connecting method, especially a kind of elder generation inserts composite metal-plastic pipe in the birdsmouth of pipe fitting the metal level to plugging position again and implements the high-frequency induction welding process that eddy-current heating is realized the composite metal-plastic pipe of welding, is used for the composite metal-plastic pipes of system and being connected of pipe fitting such as air feed, plumbing, chemical industry, heating power.
Background technology
At present, realize that by plastics being heated to molten condition the method for welding has following two kinds usually:
1, pegs graft behind the hot melt: earlier plastic tube or composite metal-plastic pipe (normally are made of inner plastic layer, intermediate metal layer, outer plastic layer, the version that also comprises one deck plastic layer and layer of metal layer), the sidewall of pipe fitting birdsmouth is heated to molten condition, again plastic tube or composite metal-plastic pipe are inserted in the birdsmouth of pipe fitting and realize welding.This welding process since when pegging graft plastics be molten condition, easily therefore off normal and produce molten knurl is applicable to the welding to small-bore plastic tube and composite metal-plastic pipe more, and is unsuitable for bigbore plastic tube or composite metal-plastic pipe are implemented connection.
2, the back electric smelting of pegging graft: be to be shaped on electric fuse in the sidewall of pipe fitting birdsmouth in advance, energising makes the electric fuse heating produce the heat molten plastic to realize welding to electric fuse to treat to insert in the birdsmouth of pipe fitting the back by pipe.This method is owing to need be shaped on electric fuse in advance in the sidewall of pipe fitting birdsmouth, therefore require the sidewall of pipe fitting birdsmouth to have certain thickness, therefore be suitable for the connection of heavy caliber pipe is not suitable for small-bore pipe is connected so that lay electric fuse; Simultaneously, because welding need rely on the persistent fever of electric fuse, therefore be unfavorable for composite metal-plastic pipe is carried out welding (may cause this moment the metal level of electric fuse contacting metal plastic composite pipe to cause short circuit and be difficult to persistent fever implement welding).
Yet as widely used composite metal-plastic pipe in the market, above-mentioned two kinds of methods all are difficult to the composite metal-plastic pipe of full specification is carried out welding, and can't remedy when seepage occurring after the welding.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is to overcome existing welding process to be difficult to use in the defective that can't remedy when composite metal-plastic pipe to full specification carries out seepage occurring after welding and the welding, and a kind of high-frequency induction welding process of composite metal-plastic pipe is provided.For this reason, the present invention is by the following technical solutions:
The high-frequency induction welding process of composite metal-plastic pipe, it is characterized in that: earlier composite metal-plastic pipe is inserted in the birdsmouth of pipe fitting, from the outside of plugging position the metal level of composite metal-plastic pipe is carried out the plastics of eddy-current heating fusion metal level both sides afterwards with high frequency induction heater, cooling at last realizes the welding of composite metal-plastic pipe and pipe fitting.
As the optimization technique measure, can be earlier that the tube wall system of the sidewall of described birdsmouth and/or composite metal-plastic pipe is crude, again composite metal-plastic pipe is inserted heat welded in the birdsmouth of pipe fitting.As a kind of concrete grammar, making crude is to process screw thread.
As the optimization technique measure, available described high frequency induction heater is encircled in the outside of described plugging position plugging position is heated.
The invention has the beneficial effects as follows:
1, earlier composite metal-plastic pipe is inserted in the birdsmouth of pipe fitting, again the metal level of plugging position is implemented eddy-current heating and realize welding, easy to implement.
2, do not need pipe fitting, pipe are carried out special structural design.
3, be applicable to the welding of the composite metal-plastic pipe and the pipe fitting of all size.
4, be easy to realize dual face seals.
5, cause leaking if the welding quality is not good or when seeping water, can be once more to plugging position heating enforcing remedies.
Description of drawings
Fig. 1 is the schematic diagram of composite metal-plastic pipe.
Fig. 2 is a kind of structural representation of plastic pipe.
Fig. 3 is that composite metal-plastic pipe shown in Figure 1 inserts in the birdsmouth of pipe fitting shown in Figure 2 and with high frequency induction heater and from the outside of plugging position the metal level of plugging position implemented the schematic diagram that eddy-current heating is realized welding.
Number in the figure explanation: 1-composite metal-plastic pipe, 2-link, 3-pipe fitting, 4-passage, 5-internal ring wall, 6-external annulus, 7-birdsmouth, 8-flared section, 9-lining, 10-high frequency induction heater.
The specific embodiment
The present invention will be further described below in conjunction with Figure of description.
At first, composite metal-plastic pipe 1 and the pipe fitting 3 that the present invention relates to described: the composite metal-plastic pipe 1 that the present invention relates to can be to be made of inner plastic layer, intermediate metal layer, outer plastic layer as shown in Figure 1; Also can constitute or constitute by inner plastic layer and outer metal level by outer plastic layer and inner metal layer.The pipe fitting 3 that the present invention relates to as shown in Figure 2, it has at least two links 2, and (the diagram pipe fitting is a threeway, therefore it has three links, but this pipe fitting can be specific constructive form such as straight-through, elbow, four-way when implementing), be communicated with by the passage in the pipe fitting 34 between each link 2 of pipe fitting 3, each link 2 comprise internal ring wall 5, external annulus 6 and be formed on internal ring wall 5 and external annulus 6 between birdsmouth 7 when implementing (actual, can only birdsmouth 7 be set) according to concrete situation at a link.
During by method welding of the present invention: earlier composite metal-plastic pipe 1 is inserted in pipe fitting 3 birdsmouths 7 as shown in Figure 3, use high frequency induction heater 10 from the outside of plugging position the metal level of plugging position to be implemented the plastics of eddy-current heating fusion metal level both sides afterwards, the welding of composite metal-plastic pipe 1 and pipe fitting 3 is realized in the cooling back.This method, high frequency induction heater 10 cooperates with the metal level of composite metal-plastic pipe 1, the metal level induction heating of composite metal-plastic pipe is made the plastics fusion internal ring wall 5 external annulus 6 weldings of composite metal-plastic pipe 1 and pipe fitting 3.Because this method is inserted composite metal-plastic pipe 1 in the birdsmouth 7 of pipe fitting earlier, again the metal level of plugging position is implemented eddy-current heating and realize welding, easy to implement, especially be beneficial to some occasions that are unfavorable for the application of force in high-altitude, narrow space etc. and implement; Simultaneously, do not need pipe fitting, pipe are done special structural change,, can also omit the structure that is used for exhaust, holds molten knurl, be easy to make with respect to the method for pegging graft behind the hot melt; Be applicable to the welding of the composite metal-plastic pipe and the pipe fitting of all size; Be easy to realize dual face seals, promptly the inwall of multiple tube 1, outer wall are realized sealing with internal ring wall 5 external annulus 6 weldings of pipe fitting 3 respectively; Cause seepage if the welding quality is not good, can will heat enforcing remedies to plugging position once more after the media discharge of inside.Further, if be equipped with metal lining 9 in the inboard of pipe fitting internal ring wall 5, then high frequency induction heater 10 also can be combined in the inboard of internal ring wall 5 except can further promoting metal lining 9 to metal lining 9 eddy-current heating with the plastics fusion, can also promote the welding of multiple tube 1 and pipe fitting 3.
As the further of technique scheme improved and replenish, the present invention also comprises following additional technical characterictic, can they be selected for use on the described technical scheme of epimere according to concrete effect when enforcement is of the present invention:
With the tube wall system crude (as processing screw thread) of the sidewall and/or the composite metal-plastic pipe of birdsmouth 7, again composite metal-plastic pipe is inserted heat welded in the birdsmouth of pipe fitting.With reference to Fig. 1,2, promptly can be at the outer surface of internal ring wall 5, in the inner surface of external annulus 6 and the composite metal-plastic pipe, process screw thread on the outer surface, like this when in the birdsmouth that composite metal-plastic pipe is inserted pipe fitting composite metal-plastic pipe can with the birdsmouth of pipe fitting by screw thread reliable connection (even sealing combines), when with high frequency induction heater plugging position being carried out heat welded again, can guarantee the welding quality of composite metal-plastic pipe and pipe fitting, guarantee sealing effectiveness, test confirms, during proper operation, only at the outer surface of internal ring wall 5, process screw thread on the inner surface of composite metal-plastic pipe and can guarantee the welding quality, can seepage.
Encircle in the outside of plugging position with high frequency induction heater 10 plugging position is heated.So that can producing heat uniformly, the metal level of composite metal-plastic pipe carries out welding.Therefore, it is openable circular that the working position of high frequency induction heater can be, so that take off from this position after being enclosed within the plugging position outside and welding when using.
Use this method, also the end of composite metal-plastic pipe can be carried out enlarging and form flared section 8, other parts of composite metal-plastic pipe are that body still keeps original internal diameter, during connection flared section 8 is plugged in the birdsmouth 7, needn't adopt pipe to connect than large diameter, be not less than the internal diameter of internal ring wall as long as guarantee the internal diameter of pipe, owing to adopted the pipe of less internal diameter, the pressure loss of pipeline is less.
Claims (4)
1. the high-frequency induction welding process of composite metal-plastic pipe, it is characterized in that: earlier composite metal-plastic pipe (1) is inserted in the birdsmouth (7) of pipe fitting (3), use high frequency induction heater (10) metal level of composite metal-plastic pipe (1) to be carried out the plastics of eddy-current heating fusion metal level both sides from the outside of plugging position afterwards, cooling at last realizes the welding of composite metal-plastic pipe (1) and pipe fitting (3).
2. the high-frequency induction welding process of composite metal-plastic pipe according to claim 1, it is characterized in that: earlier the tube wall system with the sidewall of described birdsmouth (7) and/or composite metal-plastic pipe (1) is crude, composite metal-plastic pipe (1) is inserted the interior heat welded of birdsmouth (7) of pipe fitting again.
3. the high-frequency induction welding process of composite metal-plastic pipe according to claim 2, it is characterized in that: described system is crude to be to process screw thread.
4. according to the high-frequency induction welding process of each described composite metal-plastic pipe among the claim 1-3, it is characterized in that encircling in the outside of described plugging position plugging position is heated with described high frequency induction heater (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010172281A CN101850613A (en) | 2010-05-14 | 2010-05-14 | High-frequency induction welding method for metal plastic composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010172281A CN101850613A (en) | 2010-05-14 | 2010-05-14 | High-frequency induction welding method for metal plastic composite pipe |
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| Publication Number | Publication Date |
|---|---|
| CN101850613A true CN101850613A (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010172281A Pending CN101850613A (en) | 2010-05-14 | 2010-05-14 | High-frequency induction welding method for metal plastic composite pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852323A (en) * | 2010-06-01 | 2010-10-06 | 中科华飞管业(东莞)有限公司 | Electromagnetic induction welding method for steel-plastic composite pipe |
| CN102829276A (en) * | 2012-08-02 | 2012-12-19 | 徐焕松 | Electromagnetic induction heating type steel-plastic composite pipeline full fusion welding structure |
| CN111156453A (en) * | 2020-03-24 | 2020-05-15 | 济南吉光照明有限公司 | A LED frameless flat panel light |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62148243A (en) * | 1985-12-23 | 1987-07-02 | Sekisui Chem Co Ltd | Joining method for thermoplastic resin pipe member |
| CN1344881A (en) * | 2001-10-26 | 2002-04-17 | 甘国工 | Silane crosslinked polyethylene pipe connecting piece |
| CN1614288A (en) * | 2004-12-06 | 2005-05-11 | 葛文宇 | Connecting method for glass fibre reinforced plastics pipeline |
| CN101498385A (en) * | 2008-01-30 | 2009-08-05 | 甘国工 | Metal framework reinforced plastic composite pipes and method for manufacturing the same |
-
2010
- 2010-05-14 CN CN201010172281A patent/CN101850613A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62148243A (en) * | 1985-12-23 | 1987-07-02 | Sekisui Chem Co Ltd | Joining method for thermoplastic resin pipe member |
| CN1344881A (en) * | 2001-10-26 | 2002-04-17 | 甘国工 | Silane crosslinked polyethylene pipe connecting piece |
| CN1614288A (en) * | 2004-12-06 | 2005-05-11 | 葛文宇 | Connecting method for glass fibre reinforced plastics pipeline |
| CN101498385A (en) * | 2008-01-30 | 2009-08-05 | 甘国工 | Metal framework reinforced plastic composite pipes and method for manufacturing the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852323A (en) * | 2010-06-01 | 2010-10-06 | 中科华飞管业(东莞)有限公司 | Electromagnetic induction welding method for steel-plastic composite pipe |
| CN102829276A (en) * | 2012-08-02 | 2012-12-19 | 徐焕松 | Electromagnetic induction heating type steel-plastic composite pipeline full fusion welding structure |
| CN102829276B (en) * | 2012-08-02 | 2014-08-13 | 徐焕松 | Electromagnetic induction heating type steel-plastic composite pipeline full fusion welding structure |
| CN111156453A (en) * | 2020-03-24 | 2020-05-15 | 济南吉光照明有限公司 | A LED frameless flat panel light |
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Application publication date: 20101006 |