CN106594406A - Lining plastic pipe cast iron pipe and manufacturing method thereof - Google Patents
Lining plastic pipe cast iron pipe and manufacturing method thereof Download PDFInfo
- Publication number
- CN106594406A CN106594406A CN201710082463.0A CN201710082463A CN106594406A CN 106594406 A CN106594406 A CN 106594406A CN 201710082463 A CN201710082463 A CN 201710082463A CN 106594406 A CN106594406 A CN 106594406A
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- CN
- China
- Prior art keywords
- pipe
- cast iron
- iron pipe
- plastic
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
- B29C63/341—Lining or sheathing of internal surfaces using tubular layers or sheathings pressed against the wall by mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/0065—Heat treatment
- B29C63/0069—Heat treatment of tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/48—Preparation of the surfaces
- B29C63/481—Preparation of the surfaces mechanically
Abstract
The invention provides a lining plastic pipe cast iron pipe and a manufacturing method thereof. The lining plastic pipe cast iron pipe comprises a cast iron pipe body and a plastic composite pipe material; the plastic composite pipe material is composes of an outer layer hot melt glue layer and an inner layer plastic pipe; the plastic composite pipe material is manufactured on line; the inner wall of the cast iron pipe body is subjected to sand blasting, shot blasting or shot throwing treatment after being ground; the plastic composite pipe material is pulled into the treated cast iron pipe body; the two ends of the plastic composite pipe material are subjected to sealing and gas filling; after heating treatment, cooling is performed; and the cast iron pipe body and the plastic composite pipe material are cemented, and trimming, spraying and marking are performed. The invention further discloses the manufacturing method of the lining plastic pipe cast iron pipe. By means of the lining plastic pipe cast iron pipe and the manufacturing method thereof, the defects of an existing cement mortar lining modular cast iron pipe and epoxy resin and epoxy ceramic lining modular cast iron pipes can be overcome, and the lining plastic pipe cast iron pipe is suitable for the water supply, fuel gas, water discharging, sewage discharging, heating and other fields, and is a most ideal water delivery pipe material product at present.
Description
Technical field
The present invention relates to a kind of inner lining plastic tube cast iron pipe and its manufacture method.
Background technology
Existing plain cast iron pipe, because of its preferable combination property, is often used as water supply aqueduct, in order to solve cast iron pipe
Anticorrosion, most common method are that cement mortar liner or epoxy resin, epoxy ceramic liner are adopted in cast iron pipe to be somebody's turn to do
The first-selected anti-corrosion mode of class pipeline；Using cement mortar liner as drinking water aqueduct, as inwall is rough, current hinder
Power is big, and easily fouling, and the reacting substance that hardening of cement is produced affects water quality, and thickness of inner lining is larger, reaches 3-12mm, emptying effectiveness
Relatively low, cement lining causes whole body weight increase, is unfavorable for construction and installation, and cement lining processing is inconvenient, attachment
Power is poor, and the impact and pipe deformations during construction and installation easily causes cement and come off, and cement lining remains many to be resolved
Difficult point, so the liner mode that cement lining has not been；Using epoxy resin liner, come off due to inner liner easily layering, material
Impact of the harmful substance that material high cost, Curing Process of Epoxy are produced to water quality and health, it is difficult to spread,
Using epoxy ceramic liner, although have very high adhesive force and fineness, but manufacture difficulty is big, equipment is complicated, high cost, only
Particularity engineering can be used for, it is impossible to be widely used.
The content of the invention
The technical problem to be solved is to provide a kind of inner lining plastic tube cast iron pipe, and its simple structure, making are held
Easily, low cost, good mechanical property, hygienic environment-protecting, corrosion resistance be good, long service life, inner wall smooth, small flow resistance, defeated
Water efficiency high, energy consumption are low, liner adhesive force high, environmental suitability is strong, and cost performance is high and is easy to penetration and promotion.
Further technical problem to be solved of the invention is to provide a kind of manufacture method of inner lining plastic tube cast iron pipe,
It is by continuous online making compound plastic pipe；Sandblasting, shot-peening or ball blast are carried out after cast iron pipe inner wall polishing；Plastic composite pipe
Material is drawn in the cast iron pipe that inwall is handled well, sealed, inflation, heating, cooling, deburring, spraying, mark operation on-line operation,
So as to realize the making of inner lining plastic tube cast iron pipe.
The technical solution adopted for the present invention to solve the technical problems is：
The inner lining plastic tube cast iron pipe of the present invention, including cast iron pipe and compound plastic pipe, the compound plastic pipe is by outer layer
Hot melt adhesive layer and inner layer plastic tube are constituted, and described compound plastic pipe Jing is made online, described cast iron pipe inner wall Jing
Sandblasting, shot-peening or Shot Blasting are carried out after polishing, described compound plastic pipe is drawn in the cast iron pipe handled well, by plastics
The sealing of composite pipe two ends, inflation, after heat treated, cooling, cast iron pipe and compound plastic pipe cementation, deburring, spraying, mark
Know.
Further, described compound plastic pipe is drawn in the cast iron pipe handled well, then is placed on bushing pipe platform, will modeling
The sealing of material composite pipe two ends, inflation, are passed through through the heating devices heat or heater of bushing pipe platform by moving cart
Moving cart is heated through tubing.
Further, described mode of heating be sensing heating, can be low frequency, intermediate frequency, high frequency or superaudio sensing heating, it is excellent
Select Frequency Induction Heating.
Further, the cast iron pipe is spigot-and-socket ductile iron pipe.
The manufacture method of the inner lining plastic tube cast iron pipe of the present invention, comprises the following steps：
A, plastic resin and PUR make compound plastic pipe
1）Plastic resin, PUR dried；
2）Co-extrusion is extruded or PUR is applied outward on the plastic tube；
3）Vacuum shaping；
4）Cooling；
5）Traction；
6）Fixed length cutting；
B, cast iron pipe（Comprising outer wall zinc layers）Inwall process
7）Inwall is polished；
8）Sandblasting, shot-peening or ball blast；
C, trombone slide
9）Clamp；
10）Draw in；
D, bushing pipe
11）Sealing；
12）Inflation；
13）Heating；
14）Cooling；
15）Deburring；
16）Spraying；
17）Mark；
E, detection, check and accepting storing.
Further, in order to improve the quality and production efficiency of inner lining plastic tube cast iron pipe, reduce energy consumption and production costs, its
Further step is：
Step 2）In, co-extrusion extruding and hot melting glue-line or outward the thickness 0.2-0.5mm of painting hot melt adhesive layer.
Step 12）In, inner gas pressure is 0.2MPa ± 0.05MPa.
Step 13）In, heating-up temperature：Within pipe end 300mm be 170 DEG C ± 5 DEG C, away from pipe end 300mm with
Outer is 150 DEG C ± 5 DEG C.
Step 13）In, by the change of temperature automatically adjust heating power or tubing and heating collar relative moving speed with
Control heating-up temperature.
Step 14）In, after cooling, outer pipe wall temperature is kept for 50-60 DEG C.
The manufacture method of the inner lining plastic tube cast iron pipe of the present invention, it includes making online internal layer for plastics（Polyethylene）、
Compound plastic pipe of the outer layer for PUR；Cast iron pipe inner wall carries out sandblasting, shot-peening or Shot Blasting after mill is processed again in；Will
Compound plastic pipe is drawn in the cast iron pipe handled well, then is placed in bushing pipe platform by the sealing of pipe two ends, inflation, by moving cart
Heating devices heat or heater through bushing pipe platform is heated through tubing by moving cart, water-spraying control, or heating
Device is heated through tubing by moving cart, trimmer deburring, flush coater spraying, ink jet numbering machine mark.It overcomes existing water
The inwall that cement mortar nodular cast iron tube with liner is present is rough, and resistance to water-flow is big, easy fouling, and it is harmful that hardening of cement process is produced
Material affects water quality, and thickness of inner lining is big, and emptying effectiveness is low, and tubing is hit, the defect such as easy to fall off that deforms cement；Also overcome existing
Have epoxy resin, epoxy ceramic nodular cast iron tube with liner cost of manufacture high, be easily layered, Curing Process of Epoxy affect water quality and
The defects such as worker health.
Compared with prior art, the invention has the characteristics that：
（1）The present invention reduces cast iron pipe thickness of inner lining using cast iron pipe and the technical scheme of compound plastic pipe entirety cementation,
Internal diameter increases, and water passing capacity and emptying effectiveness are greatly improved, while reach energy-saving effect, liner is plastic tube, material
Low cost.
（2）The present invention becomes cast iron tube wall using cast iron pipe and the technical scheme of compound plastic pipe entirety cementation
Smooth, and non-scaling, small flow resistance, pipeline comprehensive energy consumption and operating cost are substantially reduced.
（3）Technical scheme of the present invention using the overall cementation of cast iron pipe and compound plastic pipe, plastic lining are intercepted completely
Contact of the water with cast iron tube wall, has prevented the secondary pollution of water quality during water delivery, makes water quality become much cleaner health.
（4）The present invention keeps ductile iron pipe using cast iron pipe and the technical scheme of compound plastic pipe entirety cementation
The good mechanical performance of cast iron pipe itself, inner lining plastic tube greatly improve pipeline corrosion resistance and the service life.
（5）Technical scheme of the present invention using the overall cementation of cast iron pipe and compound plastic pipe, internal layer is polyethylene tube, tough
Property it is good, ectonexine adopt PUR bonding, substantially increase the adhesive force of cast iron pipe and lined with polyethylene pipe, solve in other
The problem that lining mode inner liner is easy to crack, is layered, comes off, makes construction become convenient, fast, simple.
（6）The present invention makes cast iron pipe inner wall more smooth using polishing to cast iron pipe inner wall, then by sandblasting,
Shot-peening or ball blast technique are processed, and are greatly improved cast iron pipe and hot melt adhesive layer, the bonding quality of inner lining plastic tube, are made production tube
More smooth, resistance to water-flow can be less, and the comprehensive energy consumption and operating cost of pipeline can be even lower.
（7）The present invention is suitable for the production of heavy caliber pipe（Prior art is only adapted to the following tubing of bore 500mm, this
Invention is adaptable to bore 2600mm above tubing）, while equipment simple and flexible, is suitable for factory lines, produces in enormous quantities,
Production efficiency is high, and low production cost greatly improves the inner lining plastic tube cast iron pipe market competitiveness.
（8）The technical scheme sprayed after being combined by the bushing pipe that the present invention is adopted, heats using bushing pipe compound tense tubing
Remaining temperature accelerate the rate of drying of spraying, improve production efficiency.
（9）Preferably, the present invention automatically adjusts heating power or by tubing and heating collar by the change of heating-up temperature
Relative moving speed makes each position heating-up temperature of tubing uniform, so that cast iron pipe and heat reaching the stability of temperature heating
, without leak source, product quality is stable for melt layer and plastic tube bonding plane, and one-shot forming qualification rate is high, and energy-conserving and environment-protective.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment
The inner lining plastic tube spigot-and-socket ductile iron pipe of the present embodiment, including spigot-and-socket ductile iron pipe and plastic composite pipe
Material, the compound plastic pipe is by outer layer hot melt adhesive layer and inner layer plastic tube（Polyethylene）Constitute.
Described compound plastic pipe Jing is made online：Polyethylene and PUR dried, the extruded machine of difference
Extrude to co-extruding mould, outer layer is produced for PUR, the double-layer plastic composite pipe that internal layer is polyethylene, hot melt adhesive layer thickness
For 0.3mm, polyethylene layer thickness is 3mm, external diameter 0.5mm less than spheroidal graphite cast-iron bore, then through Vacuum shaping, cooling, is led
Draw machine travel, cut into length required for bushing pipe composite molding.
In described ductile iron pipe inner wall Jing, grinding machine polishes flat, then by the ductile iron pipe Jing sandblastings for polishing flat,
Shot-peening or ball blast, make ductile iron pipe inner wall oxide layer, rust remove frosting that is clean and obtaining certain roughness.
In order to ensure that inner lining plastic tube is smoothly drawn in ductile iron pipe and facilitate seal head sealed liner plastic tube, will modeling
Trombone slide machine clamp is inserted in material multiple tube one end, and the ductile iron pipe that inwall is handled well is placed in trombone slide machine platform, by plastic composite pipe
Draw in ductile iron pipe, plastic composite pipe two ends respectively reserve the length required for bushing pipe platform seal head.
In order to ensure that ductile iron pipe is bonded as one with inner lining plastic tube, tubing is placed in into bushing pipe platform running trolley
On, the end count end socket sealing of plastic tube two ends is filled with compressed air to 0.2MPa, startup optimization dolly, is started by photoswitch
Intermediate frequency induction heating device（Medium frequency induction device is existing equipment）Heating, heating control system arrange tubing heating-up temperature be away from
It is 170 DEG C within socket end 300mm, is 150 DEG C beyond socket end 300mm, heating work(is automatically adjusted by the change of temperature
Rate or tubing make tubing heating-up temperature meet temperature program(me) requirement, edge with heating collar relative moving speed to control heating-up temperature
Tubing moving direction arranges cooling water ring apart from heating collar 300mm-600mm, carries out water drenching and cool down 50 DEG C -60 after tubing heating
DEG C, meanwhile, air pressure 3-10min in tubing is kept, and is discharged into discharging platform, deburring is carried out with trimmer；Deburring is completed, after heating
Remaining warming the meridian flush coater sprayed, ink jet numbering machine carries out coding mark.
The manufacture method of described inner lining plastic tube spigot-and-socket ductile iron pipe, comprises the following steps：
A, polyethylene and PUR make plastic composite pipe
1）Polyethylene, PUR dried-dehydrator；
2）Co-extrusion extrusion-extruder, co-extruding mould；
3）Vacuum shaping-calibration sleeve, vacuum tank；
4）Cooling-spray water tank；
5）Traction-traction machine；
6）Fixed length cutting-cutting machine；
B, spigot-and-socket ductile iron pipe（Comprising outer wall zinc layers）Inwall process
7）Inwall polishing-interior grinding machine；
8）Sandblasting, shot-peening or ball blast-sandblasting machine, compressed air shotblasting machine or shot-blasting machine；
C, trombone slide
9）Clamp-fixture；
10）Draw in-bench；
D, bushing pipe
11）Sealing-seal head；
12）Inflation-gas tube；
13）Heating-intermediate frequency induction heating device, running trolley；
14）Cooling-water ring；
15）Deburring-trimmer；
16）Spraying-flush coater；
17）Mark-ink jet numbering machine；
E, detection, check and accepting storing.
Claims (10)
1. a kind of inner lining plastic tube cast iron pipe, it is characterised in that：Including cast iron pipe and compound plastic pipe, the plastic composite pipe
Material is made up of outer layer hot melt adhesive layer and inner layer plastic tube, and described compound plastic pipe Jing is made online, described cast iron
Inside pipe wall carries out sandblasting, shot-peening or Shot Blasting Jing after polishing, and described compound plastic pipe is drawn in the cast iron pipe handled well
It is interior, by the sealing of compound plastic pipe two ends, inflation, after heat treated, cooling, cast iron pipe and compound plastic pipe cementation, deburring,
Spraying, mark.
2. inner lining plastic tube cast iron pipe according to claim 1, it is characterised in that：Described compound plastic pipe is drawn in
In the cast iron pipe handled well, then it is placed on bushing pipe platform, the sealing of compound plastic pipe two ends, inflation is worn by moving cart
The heating devices heat or heater for crossing bushing pipe platform is heated through tubing by moving cart.
3. according to the inner lining plastic tube cast iron pipe described in claim 2, it is characterised in that：Described mode of heating is sensing heating.
4. inner lining plastic tube cast iron pipe according to claim 3, it is characterised in that：Described sensing heating be low frequency, in
Frequently, high frequency or superaudio heating.
5. a kind of manufacture method of inner lining plastic tube cast iron pipe, it is characterised in that comprise the following steps：
A, plastic resin and PUR make compound plastic pipe
1）Plastic resin, PUR dried；
2）Co-extrusion is extruded or PUR is applied outward on the plastic tube；
3）Vacuum shaping；
4）Cooling；
5）Traction；
6）Fixed length cutting；
B, cast iron pipe inner wall process
7）Inwall is polished；
8）Sandblasting, shot-peening or ball blast；
C, trombone slide
9）Clamp；
10）Draw in；
D, bushing pipe
11）Sealing；
12）Inflation；
13）Heating；
14）Cooling；
15）Deburring；
16）Spraying；
17）Mark；
E, detection, check and accepting storing.
6. the manufacture method of inner lining plastic tube cast iron pipe according to claim 5, it is characterised in that step 2）In, co-extrusion
Extruding and hot melting glue-line or the thickness for applying outward hot melt adhesive layer are 0.2-0.5mm.
7. the manufacture method of inner lining plastic tube cast iron pipe according to claim 6, it is characterised in that step 12）In, inflation
Air pressure is 0.2MPa ± 0.05MPa.
8. the manufacture method of inner lining plastic tube cast iron pipe according to claim 7, it is characterised in that step 13）In, heating
Temperature：It is 170 DEG C ± 5 DEG C within pipe end 300mm, is 150 DEG C ± 5 DEG C beyond pipe end 300mm.
9. the manufacture method of inner lining plastic tube cast iron pipe according to claim 8, it is characterised in that step 13）In, pass through
The change of temperature automatically adjusts heating power or tubing with heating collar relative moving speed to control heating-up temperature.
10. the manufacture method of inner lining plastic tube cast iron pipe according to claim 9, it is characterised in that step 14）In, it is cold
But after, outer pipe wall temperature is kept for 50-60 DEG C.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082463.0A CN106594406B (en) | 2017-02-16 | 2017-02-16 | A kind of inner lining plastic tube cast iron pipe and its manufacture method |
| SG11201907511RA SG11201907511RA (en) | 2017-02-16 | 2017-11-17 | Ductile iron pipe lined with plastic pipe liner and method for manufacturing same |
| GB1911610.2A GB2573244B (en) | 2017-02-16 | 2017-11-17 | Ductile iron pipe lined with plastic pipe liner and method for manufacturing same |
| PCT/CN2017/111477 WO2018149188A1 (en) | 2017-02-16 | 2017-11-17 | Cast iron pipe lined with plastic pipe liner and manufacturing method thereof |
| TW107102655A TWI657217B (en) | 2017-02-16 | 2018-01-25 | Cast iron pipe lined with plastic pipe and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082463.0A CN106594406B (en) | 2017-02-16 | 2017-02-16 | A kind of inner lining plastic tube cast iron pipe and its manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594406A true CN106594406A (en) | 2017-04-26 |
| CN106594406B CN106594406B (en) | 2017-11-21 |
Family
ID=58587384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710082463.0A Active CN106594406B (en) | 2017-02-16 | 2017-02-16 | A kind of inner lining plastic tube cast iron pipe and its manufacture method |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN106594406B (en) |
| GB (1) | GB2573244B (en) |
| SG (1) | SG11201907511RA (en) |
| TW (1) | TWI657217B (en) |
| WO (1) | WO2018149188A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018149188A1 (en) * | 2017-02-16 | 2018-08-23 | 湖南振辉管业有限公司 | Cast iron pipe lined with plastic pipe liner and manufacturing method thereof |
| CN109049744A (en) * | 2018-08-13 | 2018-12-21 | 湖南振辉管业有限公司 | Bench |
| CN109210286A (en) * | 2018-11-06 | 2019-01-15 | 湖南振辉管业有限公司 | Outer plastic-coated lining plastic metal composite pipe and its manufacturing method |
| CN109237146A (en) * | 2018-11-06 | 2019-01-18 | 湖南振辉管业有限公司 | Embedded port enhancing ring composite metal-plastic pipe and its manufacturing method |
| CN109323052A (en) * | 2018-10-23 | 2019-02-12 | 济南德士净水管道制造有限公司 | A kind of compound pipeline complex pipeline and its manufacturing method |
| CN111452400A (en) * | 2020-04-17 | 2020-07-28 | 衡水市东晨矿山机械制造有限公司 | Production process of drainage pipe fitting for mine |
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| CN212251525U (en) * | 2020-04-23 | 2020-12-29 | 广东联塑科技实业有限公司 | Composite pipe fitting |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI657217B (en) | 2019-04-21 |
| GB201911610D0 (en) | 2019-09-25 |
| SG11201907511RA (en) | 2019-09-27 |
| GB2573244A (en) | 2019-10-30 |
| GB2573244B (en) | 2022-07-27 |
| TW201831814A (en) | 2018-09-01 |
| CN106594406B (en) | 2017-11-21 |
| WO2018149188A1 (en) | 2018-08-23 |
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