CN110541976A - Polyethylene steel strip reinforced spiral corrugated pipe and production process thereof - Google Patents
Polyethylene steel strip reinforced spiral corrugated pipe and production process thereof Download PDFInfo
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- CN110541976A CN110541976A CN201910795929.0A CN201910795929A CN110541976A CN 110541976 A CN110541976 A CN 110541976A CN 201910795929 A CN201910795929 A CN 201910795929A CN 110541976 A CN110541976 A CN 110541976A
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- steel strip
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Classifications
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
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- 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
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a production process of a polyethylene steel strip reinforced spiral corrugated pipe, which comprises the following steps: extruding the inner PE layer by using a PE strip extruder; spirally winding the reinforcing steel strip on the inner layer PE, and filling a buffer rod into the arc-shaped groove of the reinforcing steel strip; extruding outer PE on the reinforced steel belt by using a PE belt extruder; rolling the positions between the reinforced steel belts by using a forming roll shaft, and laminating the outer PE layer and the inner PE layer; and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production. According to the invention, the tackifying resin is sprayed on the reinforcing steel strip, and when the inner layer PE and the outer layer PE are rolled by the reinforcing steel strip after installation, the tackifying resin bonds the reinforcing steel strip and the outer layer PE, so that the viscosity of the reinforcing steel strip and the outer layer PE is increased, and the tackifying resin wraps the reinforcing steel strip, so that the reinforcing steel strip is prevented from scratching the outer layer PE and leaking.
Description
Technical Field
The invention belongs to the technical field of pipeline production, and particularly relates to a polyethylene steel strip reinforced spiral corrugated pipe and a production process thereof.
background
the polyethylene spiral corrugated pipe is a composite PE material adopting a U-shaped steel belt, so that the rigidity of the ring of the pipe is greatly improved on the premise of not increasing the cost, the strength of the pipe is greatly improved compared with that of a wound pipe and a Krah pipe under the same weight condition, and the polyethylene spiral corrugated pipe has the characteristics of light weight, high pressure resistance, good toughness, fast construction, long service life and the like, and the cost is greatly reduced compared with the pipe with other structures due to the excellent pipe wall structural design. And the connection is convenient and reliable, so the connector is widely applied at home and abroad.
the steel belt and the polyethylene plastic are simultaneously heated, welded and wound to form, and because the steel belt and the polyethylene plastic are different in material, the steel belt and the polyethylene plastic are different in stress concentration when wound and bent, different in linear expansion coefficient and different in fatigue resistance, plastic cracks on the inner wall and the outer wall of the pipe are easily generated in transportation, installation and use, the steel belt is exposed and corroded, water leakage occurs, the service life is shortened, and other engineering quality problems occur.
Disclosure of Invention
The invention aims to: in order to solve the problems that the existing spiral corrugated pipe is easy to damage and the service life is shortened, the polyethylene steel strip reinforced spiral corrugated pipe and the production process thereof are provided.
the technical scheme adopted by the invention is as follows:
The utility model provides a polyethylene steel band reinforcing helical bellows, includes inlayer PE and outer PE, the spiral is equipped with curved enhancement steel band between inlayer PE and the outer PE, and the arc inboard of strengthening the steel band is equipped with the buffer rod.
The production process of the polyethylene steel strip reinforced spiral corrugated pipe comprises the following steps:
Step 1: extruding the inner PE layer by using a PE strip extruder;
Step 2: spirally winding the reinforcing steel strip on the inner layer PE, and filling a buffer rod into the arc-shaped groove of the reinforcing steel strip;
and step 3: extruding outer PE on the reinforced steel belt by using a PE belt extruder;
and 4, step 4: rolling the positions between the reinforced steel belts by using a forming roll shaft, and laminating the outer PE layer and the inner PE layer;
And 5: and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production.
Wherein, before step 1, adding: preparing a reinforced steel belt, punching and shearing the steel belt with the corresponding size according to the requirement of a customer order, and bending the steel belt into an arc shape.
wherein, the following are added after the reinforced steel strip is prepared: and (2) processing the reinforced steel strip, namely, degreasing and degreasing the reinforced steel strip by using a high-pressure cleaning machine, drying the reinforced steel strip by using a high-temperature dryer after cleaning to remove moisture, then sending the reinforced steel strip into an oven to bake the steel strip completely, then spraying tackifying resin on the outer side of the steel strip by using a plastic coating machine, then performing air cooling to prevent the tackifying resin from dripping naturally, and finally sending the steel strip into a tractor to be wound into a disc shape for use.
In the preparation of the reinforcing steel strip, if the disk-shaped reinforcing steel strip cannot be used within 12 hours according to actual production conditions, the disk-shaped reinforcing steel strip is cooled, so that the thickening resin is prevented from hardening.
The cooling treatment method specifically comprises the following steps: and (3) conveying the disk-shaped reinforced steel belt into a cooling device, setting the cooling temperature to be 10-15 ℃, and cooling for 20min to rapidly cool the disk-shaped reinforced steel belt.
wherein the tackifying resin comprises dicyclopentadiene resin, esterified rosin, xylene resin and dioctyl terephthalate.
the preparation method of the tackifying resin comprises the following steps: adding dicyclopentadiene resin, esterified rosin and xylene resin into the catalytic chamber respectively, and stirring uniformly;
Flushing nitrogen into the catalytic chamber by using an air pump to extrude air;
introducing acetylene to react for 8-12 h under the conditions that the pressure is 2.0-2.5 Mpa and the temperature is 180-200 ℃;
and removing low-boiling-point substances after the reaction is finished, adding dioctyl terephthalate, and mixing and stirring uniformly to obtain the tackifying resin.
Wherein, the buffer rod is a loose and porous rubber and plastic rod strip.
in summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. According to the invention, the inner layer PE and the outer layer PE of the spiral corrugated pipe are separately extruded, then the reinforcing steel strip is spirally wound between the inner layer PE and the outer layer PE, and is rolled between the adjacent reinforcing steel strips by using the forming roller, the inner layer PE and the outer layer PE are directly extruded and bonded, so that the reinforcing steel strip is fixed between the inner layer PE and the outer layer PE and is tightly attached to the inner layer PE and the outer layer PE, and the reinforcing steel strip moves along with the PE during use, thereby avoiding the situation that the steel strip is broken.
2. according to the invention, the tackifying resin is sprayed on the reinforcing steel strip, and when the inner layer PE and the outer layer PE are rolled by the reinforcing steel strip after installation, the tackifying resin bonds the reinforcing steel strip and the outer layer PE, so that the viscosity of the reinforcing steel strip and the outer layer PE is increased, and the tackifying resin wraps the reinforcing steel strip, so that the reinforcing steel strip is prevented from scratching the outer layer PE and leaking.
3. according to the invention, the reinforced steel strip is subjected to high-pressure cleaning and high-temperature drying before use, and industrial oil grease attached to the steel strip during production is completely removed, so that the phenomenon that the grease is contacted with PE, chemical substances in the grease react with the PE, the PE is further corroded, the strength of the PE is reduced, and the service life is influenced is avoided.
4. According to the invention, after the reinforcing steel strip sprayed with the tackifying resin is cooled and the tackifying resin is frozen at a lower temperature, the dry-hard time of the tackifying resin can be greatly prolonged, so that the condition that the reinforcing steel strip cannot be well bonded with PE due to the dry-hard of the tackifying resin caused by not being used in time is avoided.
Drawings
FIG. 1 is a cross-sectional view of a polyethylene steel strip reinforced helical bellows of the present invention;
FIG. 2 is a cross-sectional view of a buffer rod according to the present invention.
the labels in the figure are: 1. inner layer PE; 2. outer PE; 3. reinforcing the steel belt; 4. and (7) buffering the rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the first embodiment, referring to fig. 1 to 2, a polyethylene steel strip reinforced spiral corrugated pipe includes an inner layer PE1 and an outer layer PE2, and is characterized in that an arc-shaped reinforcing steel strip 3 is spirally disposed between the inner layer PE1 and the outer layer PE2, and a buffer rod 4 is disposed on an arc-shaped inner side of the reinforcing steel strip 3.
The production process of the polyethylene steel strip reinforced spiral corrugated pipe comprises the following steps:
Step 1: extruding the inner layer PE1 using a PE tape extruder;
step 2: spirally winding the reinforcing steel strip 3 on the inner layer PE1, and filling the buffer rods 4 into the arc-shaped grooves of the reinforcing steel strip 3;
and step 3: extruding an outer layer of PE2 on the reinforcing steel strip 3 using a PE strip extruder;
and 4, step 4: rolling positions between the reinforced steel belts 3 by using a forming roll shaft, and pressing the outer PE2 layer and the inner PE1 layer;
and 5: and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production.
The buffer rod is a loose and porous rubber and plastic rod strip.
in the second embodiment, referring to fig. 1-2, a polyethylene steel strip reinforced spiral corrugated pipe includes an inner layer PE1 and an outer layer PE2, wherein an arc-shaped reinforcing steel strip 3 is spirally disposed between the inner layer PE1 and the outer layer PE2, and a buffer rod 4 is disposed on an arc-shaped inner side of the reinforcing steel strip 3.
the production process of the polyethylene steel strip reinforced spiral corrugated pipe comprises the following steps:
step 1: preparing a reinforced steel belt, punching and shearing the steel belt with the corresponding size according to the requirement of a customer order, and bending the steel belt into an arc shape;
step 2: extruding the inner layer PE1 using a PE tape extruder;
And step 3: spirally winding the reinforcing steel strip 3 on the inner layer PE1, and filling the buffer rods 4 into the arc-shaped grooves of the reinforcing steel strip 3;
and 4, step 4: extruding an outer layer of PE2 on the reinforcing steel strip 3 using a PE strip extruder;
And 5: rolling positions between the reinforced steel belts 3 by using a forming roll shaft, and pressing the outer PE2 layer and the inner PE1 layer;
step 6: and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production.
The buffer rod is a loose and porous rubber and plastic rod strip.
In the third embodiment, referring to fig. 1 to 2, a polyethylene steel strip reinforced spiral corrugated pipe includes an inner layer PE1 and an outer layer PE2, and is characterized in that an arc-shaped reinforcing steel strip 3 is spirally disposed between the inner layer PE1 and the outer layer PE2, and a buffer rod 4 is disposed on an arc-shaped inner side of the reinforcing steel strip 3.
the production process of the polyethylene steel strip reinforced spiral corrugated pipe comprises the following steps:
Step 1: preparing a reinforced steel belt, punching and shearing the steel belt with the corresponding size according to the requirement of a customer order, and bending the steel belt into an arc shape;
step 2: the method comprises the following steps of (1) processing the reinforced steel strip, namely, firstly, degreasing and cleaning the reinforced steel strip by using a high-pressure cleaning machine, drying and removing moisture by using a high-temperature dryer after cleaning, then, baking the steel strip in an oven to completely dry the steel strip, then, spraying tackifying resin on the outer side of the steel strip by using a plastic coating machine, then, performing air cooling to prevent the tackifying resin from dripping naturally, and finally, sending the steel strip into a tractor to be wound into a disc shape for use;
And step 3: extruding the inner layer PE1 using a PE tape extruder;
And 4, step 4: spirally winding the reinforcing steel strip 3 on the inner layer PE1, and filling the buffer rods 4 into the arc-shaped grooves of the reinforcing steel strip 3;
And 5: extruding an outer layer of PE2 on the reinforcing steel strip 3 using a PE strip extruder;
Step 6: rolling positions between the reinforced steel belts 3 by using a forming roll shaft, and pressing the outer PE2 layer and the inner PE1 layer;
And 7: and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production.
The buffer rod is a loose and porous rubber and plastic rod strip.
In a fourth embodiment, referring to fig. 1 to 2, a polyethylene steel strip reinforced spiral corrugated pipe includes an inner layer PE1 and an outer layer PE2, and is characterized in that an arc-shaped reinforcing steel strip 3 is spirally disposed between the inner layer PE1 and the outer layer PE2, and a buffer rod 4 is disposed on an arc-shaped inner side of the reinforcing steel strip 3.
the production process of the polyethylene steel strip reinforced spiral corrugated pipe comprises the following steps:
step 1: preparing a reinforced steel belt, punching and shearing the steel belt with the corresponding size according to the requirement of a customer order, and bending the steel belt into an arc shape;
step 2: the method comprises the following steps of (1) processing the reinforced steel strip, namely, firstly, degreasing and cleaning the reinforced steel strip by using a high-pressure cleaning machine, drying and removing moisture by using a high-temperature dryer after cleaning, then, baking the steel strip in an oven to completely dry the steel strip, then, spraying tackifying resin on the outer side of the steel strip by using a plastic coating machine, then, performing air cooling to prevent the tackifying resin from dripping naturally, and finally, sending the steel strip into a tractor to be wound into a disc shape for use;
And step 3: extruding the inner layer PE1 using a PE tape extruder;
and 4, step 4: spirally winding the reinforcing steel strip 3 on the inner layer PE1, and filling the buffer rods 4 into the arc-shaped grooves of the reinforcing steel strip 3;
and 5: extruding an outer layer of PE2 on the reinforcing steel strip 3 using a PE strip extruder;
step 6: rolling positions between the reinforced steel belts 3 by using a forming roll shaft, and pressing the outer PE2 layer and the inner PE1 layer;
And 7: and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production.
In the preparation of the reinforced steel belt, according to the actual production situation, if the disk-shaped reinforced steel belt can not be used within 12 hours, the disk-shaped reinforced steel belt is cooled to prevent the tackifying resin from hardening, and the cooling treatment method specifically comprises the following steps: and (3) conveying the disk-shaped reinforced steel belt into a cooling device, setting the cooling temperature to be 10-15 ℃, and cooling for 20min to rapidly cool the disk-shaped reinforced steel belt.
the buffer rod is a loose and porous rubber and plastic rod strip.
In a fifth embodiment, referring to fig. 1-2, a polyethylene steel strip reinforced spiral corrugated pipe includes an inner layer PE1 and an outer layer PE2, wherein an arc-shaped reinforcing steel strip 3 is spirally disposed between the inner layer PE1 and the outer layer PE2, and a buffer rod 4 is disposed on an arc-shaped inner side of the reinforcing steel strip 3.
the production process of the polyethylene steel strip reinforced spiral corrugated pipe comprises the following steps:
step 1: preparing a reinforced steel belt, punching and shearing the steel belt with the corresponding size according to the requirement of a customer order, and bending the steel belt into an arc shape;
step 2: the method comprises the following steps of (1) processing the reinforced steel strip, namely, firstly, degreasing and cleaning the reinforced steel strip by using a high-pressure cleaning machine, drying and removing moisture by using a high-temperature dryer after cleaning, then, baking the steel strip in an oven to completely dry the steel strip, then, spraying tackifying resin on the outer side of the steel strip by using a plastic coating machine, then, performing air cooling to prevent the tackifying resin from dripping naturally, and finally, sending the steel strip into a tractor to be wound into a disc shape for use;
And step 3: extruding the inner layer PE1 using a PE tape extruder;
And 4, step 4: spirally winding the reinforcing steel strip 3 on the inner layer PE1, and filling the buffer rods 4 into the arc-shaped grooves of the reinforcing steel strip 3;
And 5: extruding an outer layer of PE2 on the reinforcing steel strip 3 using a PE strip extruder;
Step 6: rolling positions between the reinforced steel belts 3 by using a forming roll shaft, and pressing the outer PE2 layer and the inner PE1 layer;
And 7: and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production.
in the preparation of the reinforced steel belt, according to the actual production situation, if the disk-shaped reinforced steel belt can not be used within 12 hours, the disk-shaped reinforced steel belt is cooled to prevent the tackifying resin from hardening, and the cooling treatment method specifically comprises the following steps: and (3) conveying the disk-shaped reinforced steel belt into a cooling device, setting the cooling temperature to be 10-15 ℃, and cooling for 20min to rapidly cool the disk-shaped reinforced steel belt.
The tackifying resin comprises dicyclopentadiene resin, esterified rosin, xylene resin and dioctyl terephthalate, and the preparation method of the tackifying resin comprises the following steps: s1: adding dicyclopentadiene resin, esterified rosin and xylene resin into the catalytic chamber respectively, and stirring uniformly;
S2: flushing nitrogen into the catalytic chamber by using an air pump to extrude air;
s3: introducing acetylene to react for 812h under the conditions of pressure 2.02.5Mpa and temperature 180200;
S4: and removing low-boiling-point substances after the reaction is finished, adding dioctyl terephthalate, and mixing and stirring uniformly to obtain the tackifying resin.
The buffer rod is a loose and porous rubber and plastic rod strip.
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. the utility model provides a polyethylene steel band reinforcing helical bellows, includes inlayer PE (1) and outer PE (2), its characterized in that, the spiral is equipped with curved enhancement steel band (3) between inlayer PE (1) and outer PE (2), and the arc inboard of strengthening steel band (3) is equipped with buffer rod (4).
2. the process for producing a polyethylene steel strip reinforced helical bellows as claimed in claim 1, comprising the steps of:
step 1: extruding the inner layer PE (1) by using a PE strip extruder;
step 2: spirally winding the reinforcing steel strip (3) on the inner layer PE (1), and filling a buffer rod (4) into the arc-shaped groove of the reinforcing steel strip (3);
and step 3: extruding an outer layer PE (2) on the reinforced steel belt (3) by using a PE belt extruder;
And 4, step 4: rolling the positions between the reinforced steel belts (3) by using a forming roll shaft, and pressing the outer PE (2) layer and the inner PE (1) layer;
and 5: and cooling the formed spiral corrugated pipe, cutting the spiral corrugated pipe into pieces with the length according to the requirement of a customer order, trimming, checking, and sending the finished products into a finished product warehouse after the finished products are qualified to finish production.
3. the process for producing a polyethylene steel strip reinforced helical bellows as claimed in claim 2, wherein said step 1 is preceded by the steps of: preparing a reinforced steel belt, punching and shearing the steel belt with the corresponding size according to the requirement of a customer order, and bending the steel belt into an arc shape.
4. a process for manufacturing a polyethylene steel strip reinforced helical bellows as claimed in claim 3, wherein said adding after the preparation of the reinforcing steel strip: and (2) processing the reinforced steel strip, namely, degreasing and degreasing the reinforced steel strip by using a high-pressure cleaning machine, drying the reinforced steel strip by using a high-temperature dryer after cleaning to remove moisture, then sending the reinforced steel strip into an oven to bake the steel strip completely, then spraying tackifying resin on the outer side of the steel strip by using a plastic coating machine, then performing air cooling to prevent the tackifying resin from dripping naturally, and finally sending the steel strip into a tractor to be wound into a disc shape for use.
5. The process for producing a polyethylene steel strip reinforced helical bellows as claimed in claim 3, wherein in the preparation of the reinforcing steel strip, if the disk-shaped reinforcing steel strip is not used within 12 hours according to actual production conditions, the disk-shaped reinforcing steel strip is cooled to prevent the tackifying resin from hardening.
6. The production process of the polyethylene steel strip reinforced helical bellows as claimed in claim 5, wherein the cooling treatment method specifically comprises: and (3) conveying the disk-shaped reinforced steel belt into a cooling device, setting the cooling temperature to be 10-15 ℃, and cooling for 20min to rapidly cool the disk-shaped reinforced steel belt.
7. The process of claim 6 wherein the tackifying resin comprises dicyclopentadiene resin, esterified rosin, xylene resin and dioctyl terephthalate.
8. The process for producing a polyethylene steel strip reinforced helical bellows as claimed in claim 7, wherein the preparation method of the tackifying resin comprises the steps of: adding dicyclopentadiene resin, esterified rosin and xylene resin into the catalytic chamber respectively, and stirring uniformly;
flushing nitrogen into the catalytic chamber by using an air pump to extrude air;
Introducing acetylene to react for 8-12 h under the conditions that the pressure is 2.0-2.5 Mpa and the temperature is 180-200 ℃;
and removing low-boiling-point substances after the reaction is finished, adding dioctyl terephthalate, and mixing and stirring uniformly to obtain the tackifying resin.
9. the polyethylene steel strip reinforced helical bellows as claimed in any one of claims 1 to 9, wherein the buffer rod 4 is a porous rubber plastic rod.
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| CN201910795929.0A CN110541976A (en) | 2019-08-27 | 2019-08-27 | Polyethylene steel strip reinforced spiral corrugated pipe and production process thereof |
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| CN201910795929.0A CN110541976A (en) | 2019-08-27 | 2019-08-27 | Polyethylene steel strip reinforced spiral corrugated pipe and production process thereof |
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Cited By (2)
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| CN113878056A (en) * | 2021-09-07 | 2022-01-04 | 瓯亚管业有限公司 | Novel modification formula of steel belt pipe |
| CN114393803A (en) * | 2022-01-14 | 2022-04-26 | 四川兰晨管业有限公司 | Steel strip corrugated pipe production line and production process |
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