CN104608367A - Bending technological method of PE tube of 90-degree completely anticorrosive steel-plastic service tube - Google Patents
Bending technological method of PE tube of 90-degree completely anticorrosive steel-plastic service tube Download PDFInfo
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- CN104608367A CN104608367A CN201510068449.6A CN201510068449A CN104608367A CN 104608367 A CN104608367 A CN 104608367A CN 201510068449 A CN201510068449 A CN 201510068449A CN 104608367 A CN104608367 A CN 104608367A
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Abstract
The invention relates to a bending technological method of a PE tube of a 90-degree completely anticorrosive steel-plastic service tube. The bending technological method comprises the following steps: a, putting a part of the PE tube into boiled water, and heating for at least 60 minutes; b, inserting one end of the PE tube into a spring after the PE tube is heated up fully, bending on a bending device for 5 seconds-10 seconds, and fixing the bent part of the PE tube by a rope after one part of the PE tube is bent; c, carrying out quick baking sizing on the periphery of the bent part of the PE tube for 10s by naked flame after taking down the 90-degree completely anticorrosive steel-plastic service tube from the bending device; and d, putting the baking sized part of the PE tube into clean water, cooling for 10 minutes, and sizing, putting the 90-degree completely anticorrosive steel-plastic service tube outdoors for node failure processing, and fixing the rope after node failure processing so as to obtain the bend molded 90-degree completely anticorrosive steel-plastic service tube. The method is simple in technology, and low in cost; the quality is reliable; the fuel gas leakage accident can be prevented effectively.
Description
Technical field
The present invention relates to a kind of 90 ° of full antiseptic steel-plastic inlet tube PE pipe bending process methods.
Background technology
At present, 90 ° of full antiseptic steel-plastic inlet tubes " PE pipe bending process " that known supplier or enterprise produce in the whole nation be to be shaped through Shooting Technique by polyethylene raw material or Baking out shaping.
The feature of the full antiseptic steel-plastic inlet tube of injection molded 90 ° is: be shaped through Shooting Technique by polyethylene raw material according to designed injection mold, its processing technology simply, easily shaping, economy, cost are low.
The shortcoming existed is: when buried earthing or other be subject to External Force Acting under the flexural deformation that causes or stretcher strain time, easily cause PE to manage and depart between fitting sleeve or steel conduit, thus causing 90 ° of full antiseptic steel-plastic inlet tube gas leakage, the safety or the personnel casualty accidents that affect whole piece pressure pipeline occur.
To the feature that 90 ° of full antiseptic steel-plastic inlet tube entirety carry out (comprising PE pipe crooked position) " Baking out is shaping " be: according to physical characteristic and the mechanical property of PE pipe, 90 ° of full antiseptic steel-plastic inlet tube entirety (comprising PE pipe crooked position) are carried out " Baking out is shaping ", makes the fully softening laggard line bend of PE pipe shaping.
The shortcoming existed: this bending process is because the material because of 90 ° of full antiseptic steel-plastic inlet tube seamless steel pipes is different from PE tubing matter, the coefficient of expansion, shrinkage ratio are also different, so it is unapproachable for carrying out control to the heating-up temperature of seamless steel pipe and PE pipe respectively in heating process.Particularly the time controling difficulty of heating-up temperature and heating is large, and easily cause angle of bend resilience, rework rate is high, unstable product quality.Particularly inlet tube fitting sleeve connection place easily produces gap and PE tube-surface carbonization embrittlement, easily gas leakage accident occurs.
In sum, existing 90 ° of full antiseptic steel-plastic inlet tubes " PE pipe bending process " are existing defects all, easily causes gas leakage accident.Therefore, be badly in need of providing that a kind of technique is simple, with low cost, reliable in quality and effectively can avoid 90 of gas leakage accident ° of full antiseptic steel-plastic inlet tube PE pipe bending process methods.
Summary of the invention
The object of this invention is to provide that a kind of technique is simple, with low cost, reliable in quality and effectively can avoid 90 of gas leakage accident ° of full antiseptic steel-plastic inlet tube PE pipe bending process methods.
The basic conception of 90 ° of full antiseptic steel-plastic inlet tube PE pipe bending process methods of the present invention is:
Together with the professor of the applicant and Southwest Petrol University's accumulating specialty, dictorial advisor, by repeatedly testing, testing, Joint Designing, work out 90 ° of full antiseptic steel-plastic inlet tubes " the bending new technology of PE pipe ".Avoid the defect easily caused by above-mentioned technique.Be characterized in:
1) PE pipe bending after the sizing of rebound degree little angle of bend stable, first-time qualification rate more than 98%, production efficiency, product quality greatly improve;
2) PE pipe bends the defects such as rear surface Non-carbonized, embrittlement, stable physical property, particularly can effectively avoid and bear the PE that the earthing load on steel gas pipe underground, secondary construction and ground, building settlement may bring and manage stressed bend fracture, on the seamless steel pipe in 90 ° of full antiseptic steel-plastic inlet tubes and PE manages, bonding strength between fitting sleeve does not have any impact;
3) PE pipe can effectively be avoided after bending because of components integers heating, the gas leakage hidden danger that the issuable gap of point of attachment that the unlike material coefficient of expansion, shrinkage ratio difference are brought is caused;
4) according to physical characteristic and the mechanical property of PE pipe, what adopt 90 ° of full antiseptic steel-plastic inlet tube joints due to applicant is " cold extruding formation process ", particularly when in PE brake forming process, on the bonding strength of 90 ° of full antiseptic steel-plastic inlet tubes without any impact, ensure that the security performance of bury land pressure pipeline, extend the maintenance cost that the life-span of pressure pipeline, i.e. economy additionally reduce pipeline;
5) 90 ° of full antiseptic steel-plastic inlet tube webmasters and fitting sleeve connecting portion are from before 2011, and surface have employed, and " radiant crosslinked polyethylene heat shrinkable cover " is done anticorrosion, ensure that the antirust and corrosion resistance of 90 ° of full antiseptic steel-plastic inlet tubes;
6) to 90 ° of full antiseptic steel-plastic inlet tubes that silk connects, the applicant connects position at silk and adds " six-sided nut " fixed cover, facilitate client uses pipe wrench double thread to connect in outdoor construction process, prevent steel tube surface injury-free, distortion, in turn ensure that the intensity that screw connects and sealing property.
The basic technical scheme of 90 ° of full antiseptic steel-plastic inlet tube bending molding process of the present invention and employing is:
Applicant make use of the physical property of PE pipe, mechanical property, plasticity and hot molten characteristic cleverly, the PE pipe of the finished product assembled " 90 ° of full antiseptic steel-plastic inlet tubes " part, the boiling water vertically putting into 100 DEG C of constant temperature Celsius fully heats (boiling) more than 60min, its objective is by temperature control break PE tube material molecular structure, the plasticity of plastic material is utilized to be extended by PE material, can not " resilience " after PE material extends; After making PE manage fully heating, take out 90 ° of full antiseptic steel-plastic inlet tubes and PE pipe one end is inserted the spring being applicable to caliber and length, its objective is and prevent PE pipe in BENDING PROCESS, cause owing to bending PE pipe to be out of shape (the modal PE of being pipe sweep subsides and flattens), cause PE pipe inner caliber effect of contraction product to use; Then be placed on the enterprising line bend of bending apparatus be shaped rear and PE pipe bent part fixed (bending 5s ~ 10s time) with rope, after getting 90 ° of full antiseptic steel-plastic inlet tubes again, liquefied gas flame naked light is used to carry out quick baking sizing (10s time) again to PE pipe crooked position surrounding, then the clean water of normal temperature or about 20 DEG C Celsius is put into rapidly, the cooling 10min time shapes rapidly, after the PE pipe being finally placed on the full antiseptic steel-plastic inlet tube of outdoor 12 hours 90 ° carries out crash handling, the fixing rope of 90 ° of full antiseptic steel-plastic inlet tubes can be unclamped.
In addition, to the processing technology that 90 ° that have silk to connect full antiseptic steel-plastic inlet tubes increase " six-sided nut " fixed cover be:
(1) to steel conduit (place is about 5mm from screw thread) the Surface Machining 0.25mm having screw thread, object uses to look for circle and facilitating fixed cover to locate;
(2) " six-sided nut " fixed cover press-in steel conduit (manufactured position) will processed again;
(3) argon arc welding is adopted to carry out welded corner joint to steel conduit and " six-sided nut " fixed cover side (opposite direction of screw thread).
Secondly, the process of burning cover anticorrosion process is carried out on 90 ° of full antiseptic steel-plastic inlet tube surfaces:
(1) machining process: by 90 ° of full antiseptic steel-plastic inlet tube steel pipe parts (not comprising PE pipe part), carry out being heated to about 60 DEG C Celsius to steel tube surface with liquefied gas flame, radiant crosslinked polyethylene heat shrinkable cover with steel pipe equal length is inserted on 90 ° of full antiseptic steel-plastic inlet tubes and (exceedes fitting sleeve to PE pipe 20mm place), while rotate 90 ° of full antiseptic steel-plastic inlet tubes, re-use liquefied gas flame and radiant crosslinked polyethylene heat shrinkable cover surrounding homogeneous heating, distortion and contraction are formed.
(2) characteristic: the radiant crosslinked polyethylene heat shrinkable cover life-span reaches 50 years, not aging.
Specifically, 90 ° of full antiseptic steel-plastic inlet tube PE pipe bending process methods of the present invention, is characterized in that carrying out according to following steps:
A, the PE pipe of the finished product assembled " 90 ° of full antiseptic steel-plastic inlet tubes " part, the boiling water vertically putting into 100 DEG C of constant temperature Celsius fully heats, boils, and hold time at least 60min;
B, make PE manage fully heating after, take out " 90 ° of full antiseptic steel-plastic inlet tubes " and PE pipe one end is inserted the spring being applicable to caliber and length, be placed on the enterprising line bend of bending apparatus, bending time controling is at 5s ~ 10s, with rope, PE pipe bent part is fixed after PE tube portion bending forming, allow it keep case of bending;
C, take off after " 90 ° of full antiseptic steel-plastic inlet tubes " from bending apparatus, use liquefied gas flame naked light to carry out quick baking sizing to PE pipe crooked position surrounding, baking shaping time controls at 10s;
D, then PE pipe bend and toasts position of shaping and put into the clean water of normal temperature or 20 DEG C to 30 DEG C, the cooling 10min time shapes rapidly, " 90 ° of full antiseptic steel-plastic inlet tubes " is placed on outdoor again and carries out crash handling to PE pipe sweep at least 12 hours, namely the fixing rope unclamping " 90 ° of full antiseptic steel-plastic inlet tubes " after crash handling obtains " 90 ° of full antiseptic steel-plastic inlet tubes " of brake forming.
Compared with the aforementioned existing similar products, simple, with low cost, the reliable in quality of 90 ° of full antiseptic steel-plastic inlet tube PE pipe bending process method techniques of the present invention and can effectively avoid gas leakage accident.
Content of the present invention is further described with the following Examples, but content of the present invention is not limited only to content involved in embodiment.
Detailed description of the invention
Embodiment 1: ° full antiseptic steel-plastic inlet tube PE pipe bending process method of 90 described in the present embodiment, is characterized in that carrying out according to following steps:
A, the PE pipe of the finished product assembled " 90 ° of full antiseptic steel-plastic inlet tubes " part, the boiling water vertically putting into 100 DEG C of constant temperature Celsius fully heats, boils, and hold time at least 60min;
B, make PE manage fully heating after, take out " 90 ° of full antiseptic steel-plastic inlet tubes " and PE pipe one end is inserted the spring being applicable to caliber and length, be placed on the enterprising line bend of bending apparatus, bending time controling is at 5s ~ 10s, with rope, PE pipe bent part is fixed after PE tube portion bending forming, allow it keep case of bending;
C, take off after " 90 ° of full antiseptic steel-plastic inlet tubes " from bending apparatus, use liquefied gas flame naked light to carry out quick baking sizing to PE pipe crooked position surrounding, baking shaping time controls at 10s;
D, then PE pipe bend and toasts position of shaping and put into the clean water of normal temperature or 20 DEG C to 30 DEG C, the cooling 10min time shapes rapidly, " 90 ° of full antiseptic steel-plastic inlet tubes " is placed on outdoor again and carries out crash handling to PE pipe sweep at least 12 hours, namely the fixing rope unclamping " 90 ° of full antiseptic steel-plastic inlet tubes " after crash handling obtains " 90 ° of full antiseptic steel-plastic inlet tubes " of brake forming.
Claims (1)
1. 90 ° of full antiseptic steel-plastic inlet tube PE pipe bending process methods, is characterized in that carrying out according to following steps:
A, the PE pipe of the finished product assembled " 90 ° of full antiseptic steel-plastic inlet tubes " part, the boiling water vertically putting into 100 DEG C of constant temperature Celsius fully heats, boils, and hold time at least 60min;
B, make PE manage fully heating after, take out " 90 ° of full antiseptic steel-plastic inlet tubes " and PE pipe one end is inserted the spring being applicable to caliber and length, be placed on the enterprising line bend of bending apparatus, bending time controling is at 5s ~ 10s, with rope, PE pipe bent part is fixed after PE tube portion bending forming, allow it keep case of bending;
C, take off after " 90 ° of full antiseptic steel-plastic inlet tubes " from bending apparatus, use liquefied gas flame naked light to carry out quick baking sizing to PE pipe crooked position surrounding, baking shaping time controls at 10s;
D, then PE pipe bend and toasts position of shaping and put into the clean water of normal temperature or 20 DEG C to 30 DEG C, the cooling 10min time shapes rapidly, " 90 ° of full antiseptic steel-plastic inlet tubes " is placed on outdoor again and carries out crash handling to PE pipe sweep at least 12 hours, namely the fixing rope unclamping " 90 ° of full antiseptic steel-plastic inlet tubes " after crash handling obtains " 90 ° of full antiseptic steel-plastic inlet tubes " of brake forming.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068449.6A CN104608367A (en) | 2015-02-10 | 2015-02-10 | Bending technological method of PE tube of 90-degree completely anticorrosive steel-plastic service tube |
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| CN201510068449.6A CN104608367A (en) | 2015-02-10 | 2015-02-10 | Bending technological method of PE tube of 90-degree completely anticorrosive steel-plastic service tube |
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| CN104608367A true CN104608367A (en) | 2015-05-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053644A (en) * | 2016-12-01 | 2017-08-18 | 重庆永高塑业发展有限公司 | The bending device of tubing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2319214Y (en) * | 1998-02-14 | 1999-05-19 | 李质琪 | Plastic pipe bending appts. |
| CN101716822A (en) * | 2009-11-26 | 2010-06-02 | 广州市高澜水技术有限公司 | Molding process for bending small-bore PVDF pipes |
-
2015
- 2015-02-10 CN CN201510068449.6A patent/CN104608367A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2319214Y (en) * | 1998-02-14 | 1999-05-19 | 李质琪 | Plastic pipe bending appts. |
| CN101716822A (en) * | 2009-11-26 | 2010-06-02 | 广州市高澜水技术有限公司 | Molding process for bending small-bore PVDF pipes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053644A (en) * | 2016-12-01 | 2017-08-18 | 重庆永高塑业发展有限公司 | The bending device of tubing |
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Application publication date: 20150513 |