阅读说明：本技术 一种复合管生产工艺 (Composite pipe production process ) 是由 王志开 于 2020-06-16 设计创作，主要内容包括：本发明涉及复合管生产技术领域,且公开了一种复合管生产工艺,步骤一：衬塑前检验；步骤二：管口打磨；步骤三：管道内壁抛光打磨；步骤四：管道内壁喷砂处理；步骤五：选取塑料管；步骤六：塑料管穿入钢管内生产线；步骤七：钢管上架固定；步骤八：衬塑复合线；步骤九：管口余料处理；步骤十：钢塑管检验；步骤十一：内嵌内固环,采用304不锈钢,符合国家饮用水卫生标准；步骤十二：压槽/扩张反锁；步骤十三：产品喷码机；步骤十四：打包机,按照钢塑管标准数量进行捆绑打包；步骤十五：产品合格过仓。该复合管生产工艺,不仅提高了塑料管和钢管的内壁的粘连性,且防腐蚀性高,保证了复合管的生产质量。(The invention relates to the technical field of composite pipe production, and discloses a composite pipe production process, which comprises the following steps: inspecting before plastic lining; step two: polishing the pipe orifice; step three: polishing and grinding the inner wall of the pipeline; step four: carrying out sand blasting treatment on the inner wall of the pipeline; step five: selecting a plastic pipe; step six: the plastic pipe penetrates into the steel pipe inner production line; step seven: fixing the steel pipe on a frame; step eight: lining plastic composite wires; step nine: treating excess materials of the pipe orifice; step ten: inspecting the steel-plastic pipe; step eleven: an internal fixed ring is embedded, and 304 stainless steel is adopted, so that the national drinking water sanitation standard is met; step twelve: indent/expand back lock; step thirteen: a product code spraying machine; fourteen steps: a packer for binding and packing according to the standard number of the steel-plastic pipes; step fifteen: and (5) passing the qualified product through a bin. The production process of the composite pipe not only improves the adhesion of the inner walls of the plastic pipe and the steel pipe, but also has high corrosion resistance, and ensures the production quality of the composite pipe.)

1. The production process of the composite pipe is characterized by comprising the following specific production steps:

the method comprises the following steps: inspecting the selected steel pipe material by workers before plastic lining, wherein the selected steel pipe material must be a hot-dip galvanized steel pipe, the hot-dip galvanized steel pipe must strictly execute GB/T30091, British standard BS1387 and BSEN10255, each hot-dip galvanized steel pipe must adopt No. 0 zinc, and the inside and the outside of the pipe are subjected to special anti-corrosion treatment;

step two: grinding pipe orifices, wherein each hot-dip galvanized steel pipe needs to be ground by workers before being lined with plastic, so that the surface of the inner wall orifice of the pipeline meets the plastic lining requirement, and the perfect combination of a plastic pipe, the hot-dip galvanized steel pipe and an inner solid ring is ensured;

step three: polishing and grinding the inner wall of the pipeline, namely polishing and grinding the inner wall of the pipeline by adopting double-screw pipeline inner wall polishing equipment, cleaning dirt and oxidation on the inner wall of the pipeline within 15 seconds, and polishing to obtain a certain roughness and a smooth surface, so that the adhesion between the pipeline and the PE pipe is enhanced, and the quality and the corrosion prevention effect are improved;

step four: the inner wall of the pipeline is subjected to sand blasting treatment, the inner walls of all the hot-dip galvanized steel pipes of the internally-fixed ring steel-plastic pipe are subjected to further sand blasting treatment after being polished, the inner wall of the zinc pipe subjected to sand blasting is free of dust accumulation, obvious inner burrs, zinc slag, zinc nodules and the like, and the roughness meets the national lining plastic standard;

step five: selecting a plastic pipe, wherein the produced plastic pipe is smooth and free from leak and caking phenomena, the limit deviation of the wall thickness on the same section is not more than 14%, and the wall thickness of the lining pipe in each specification is in accordance with the regulation of GB/T28897 standard;

step six: the plastic pipe penetrates into the steel pipe inner production line, and the plastic pipe penetrates into the steel pipe in a mechanical mode by using the steel pipe port processing auxiliary device to achieve first-stage fixation;

step seven: fixing the steel pipes on a frame, fixing the hot-dip galvanized steel pipes penetrated with the plastic pipes on a heating frame of a steel pipe compound machine one by one, and fixing 4-8 steel pipes at a time by adopting different constant-pressure high-frequency plastic lining heating machines according to the sizes of different steel pipes so as to meet the production requirements;

step eight: the lining plastic composite wire finishes the composite process of the steel plastic pipe through high-frequency induction heating and high-temperature and high-pressure processes, and different production machines are adopted to process each steel plastic pipe according to the sizes of different steel pipes;

step nine: processing pipe orifice excess materials, cutting off excess plastics at two ends of the steel pipe, and polishing and finishing;

step ten: the steel-plastic pipe is inspected, and the steel-plastic pipe is firstly inspected to determine whether the steel-plastic pipe is completely combined and whether the steel-plastic pipe is smooth and has no excess plastic;

step eleven: an internal fixed ring is embedded, and 304 stainless steel is adopted, so that the national drinking water sanitation standard is met;

step twelve: the pressure groove/expansion back locking is realized by using inner wall expansion equipment of the inner fixed ring and a special pressure sheave wheel for the inner fixed ring to press the groove, so that the problem of groove rubber opening is solved, and the pressure bearing capacity of the pipe orifice and the temperature resistance of hot water are improved;

step thirteen: the product code spraying machine adopts a code spraying machine to spray and print marks on the steel pipe body by using a steel pipe marking machine, thereby preventing counterfeiting and faking;

fourteen steps: a packer for binding and packing according to the standard number of the steel-plastic pipes;

step fifteen: passing the qualified product through a bin;

sixthly, the steps are as follows: the pipe cap is worn to prevent the pollution in the storage and transportation process.

2. A composite pipe production process according to claim 1, characterised in that: all the hot-galvanized pipes in the step one have to be measured before plastic lining, and have to meet the GB/T28897-2012 standard.

3. A composite pipe production process according to claim 1, characterised in that: and in the second step, workers are required to manually polish the hot-dip galvanized steel pipe for 20 seconds.

4. A composite pipe production process according to claim 1, characterised in that: and after polishing and grinding, the inner wall of the hot galvanized pipe has no obvious zinc slag, welding seams and remnants, and the height of the welding seams is less than 0.1 mm.

5. A composite pipe production process according to claim 1, characterised in that: the polyethylene adopted in the fifth step must be a material with a national famous brand to ensure the quality of the plastic pipe, the temperature for producing the plastic pipe is strictly controlled between 150 ℃ and 155 ℃, the PE, the adhesive and the color master are mixed according to the proportion, the production time of each plastic pipe is controlled to be 1 minute, and the quality is strictly controlled.

6. A composite pipe production process according to claim 1, characterised in that: and in the ninth step, when the redundant plastic pipes are cut, a cutting blade machine is adopted, so that the redundant plastic pipes can be cut off at one time.

Technical Field

The invention relates to the technical field of composite pipe production, in particular to a composite pipe production process.

Background

The composite pipe is widely applied at present, has a very wide application prospect due to the advantages of impact resistance, low thermal expansion rate, pressure resistance, high temperature resistance, mature installation, complete specification and the like, is a novel composite pipe for strongly embedding a steel pipe or a welded pipe, a seamless steel pipe and a stainless steel pipe with thinner wall thickness, and is also a more ideal pipeline upgrading and updating product. It retains the inherent advantages of two different materials, complements their inherent disadvantages, and continues to use the traditional mature installation mode and process of steel pipes, thus being convenient, reliable, sanitary and safe in use. The method is widely applied to the industrial fields of oil fields, chemical industry, electric power and the like, the application range is wider and wider, and the economic, environmental and social benefits are more obvious.

When the existing composite pipe is produced, the adhesion effect of the inner walls of the plastic pipe and the steel pipe is poor, the corrosion prevention effect is poor, and the process treatment effect is poor, so that the production quality of the composite pipe is reduced. Therefore, the utility model provides a composite pipe production technology.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a composite pipe production process, which not only improves the adhesion of the inner walls of the plastic pipe and the steel pipe, but also has high corrosion resistance, ensures the production quality of the composite pipe, and solves the problems that the adhesion effect of the inner walls of the plastic pipe and the steel pipe is poor, the corrosion resistance effect is poor, the process treatment effect is poor and the production quality of the composite pipe is reduced during the production of the composite pipe.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a production process of a composite pipe comprises the following steps: inspecting the selected steel pipe material by workers before plastic lining, wherein the selected steel pipe material must be a hot-dip galvanized steel pipe, the hot-dip galvanized steel pipe must strictly execute GB/T30091, British standard BS1387 and BS EN10255, each hot-dip galvanized steel pipe must adopt No. 0 zinc, and the inside and the outside of the pipe are subjected to special anti-corrosion treatment;

step two: grinding pipe orifices, wherein each hot-dip galvanized steel pipe needs to be ground by workers before being lined with plastic, so that the surface of the inner wall orifice of the pipeline meets the plastic lining requirement, and the perfect combination of a plastic pipe, the hot-dip galvanized steel pipe and an inner solid ring is ensured;

step three: polishing and grinding the inner wall of the pipeline, namely polishing and grinding the inner wall of the pipeline by adopting double-screw pipeline inner wall polishing equipment, cleaning dirt and oxidation on the inner wall of the pipeline within 15 seconds, and polishing to obtain a certain roughness and a smooth surface, so that the adhesion between the pipeline and the PE pipe is enhanced, and the quality and the corrosion prevention effect are improved;

step four: the inner wall of the pipeline is subjected to sand blasting treatment, the inner walls of all the hot-dip galvanized steel pipes of the internally-fixed ring steel-plastic pipe are subjected to further sand blasting treatment after being polished, the inner wall of the zinc pipe subjected to sand blasting is free of dust accumulation, obvious inner burrs, zinc slag, zinc nodules and the like, and the roughness meets the national lining plastic standard;

step five: selecting a plastic pipe, wherein the produced plastic pipe is smooth and free from leak and caking phenomena, the limit deviation of the wall thickness on the same section is not more than 14%, and the wall thickness of the lining pipe in each specification is in accordance with the regulation of GB/T28897 standard;

step six: the plastic pipe penetrates into the steel pipe inner production line, and the plastic pipe penetrates into the steel pipe in a mechanical mode by using the steel pipe port processing auxiliary device to achieve first-stage fixation;

step seven: fixing the steel pipes on a frame, fixing the hot-dip galvanized steel pipes penetrated with the plastic pipes on a heating frame of a steel pipe compound machine one by one, and fixing 4-8 steel pipes at a time by adopting different constant-pressure high-frequency plastic lining heating machines according to the sizes of different steel pipes so as to meet the production requirements;

step eight: the lining plastic composite wire finishes the composite process of the steel plastic pipe through high-frequency induction heating and high-temperature and high-pressure processes, and different production machines are adopted to process each steel plastic pipe according to the sizes of different steel pipes;

step nine: processing pipe orifice excess materials, cutting off excess plastics at two ends of the steel pipe, and polishing and finishing;

step ten: the steel-plastic pipe is inspected, and the steel-plastic pipe is firstly inspected to determine whether the steel-plastic pipe is completely combined and whether the steel-plastic pipe is smooth and has no excess plastic;

step eleven: an internal fixed ring is embedded, and 304 stainless steel is adopted, so that the national drinking water sanitation standard is met;

step twelve: the pressure groove/expansion back locking is realized by using inner wall expansion equipment of the inner fixed ring and a special pressure sheave wheel for the inner fixed ring to press the groove, so that the problem of groove rubber opening is solved, and the pressure bearing capacity of the pipe orifice and the temperature resistance of hot water are improved;

step thirteen: the product code spraying machine adopts a code spraying machine to spray and print marks on the steel pipe body by using a steel pipe marking machine, thereby preventing counterfeiting and faking;

fourteen steps: a packer for binding and packing according to the standard number of the steel-plastic pipes;

step fifteen: passing the qualified product through a bin;

sixthly, the steps are as follows: the pipe cap is worn to prevent the pollution in the storage and transportation process.

Preferably, all the hot-galvanized pipes in the step one have to be measured before plastic lining, and have to meet the GB/T28897-2012 standard.

Preferably, in the second step, the hot dip galvanized steel pipe must be manually ground for 20 seconds by a worker.

Preferably, the inner wall of the hot-dip galvanized pipe after polishing and grinding in the third step has no obvious zinc slag, welding line and remnants, and the height of the welding line is less than 0.1 mm.

Preferably, the polyethylene adopted in the fifth step must be a material with a national famous brand to ensure the quality of the plastic pipe, the temperature for producing the plastic pipe is strictly controlled between 150 ℃ and 155 ℃, the PE, the adhesive and the color master are mixed according to the proportion, the production time of each plastic pipe is controlled to be 1 minute, and the quality is strictly controlled.

Preferably, in the ninth step, when cutting the redundant plastic pipe, a cutting blade machine is adopted, so that the redundant plastic pipe can be cut off at one time.

(III) advantageous effects

Compared with the prior art, the invention provides a composite pipe production process, which has the following beneficial effects:

the production process of the composite pipe specifically comprises the following steps: inspecting before plastic lining; step two: polishing the pipe orifice; step three: polishing and grinding the inner wall of the pipeline; step four: carrying out sand blasting treatment on the inner wall of the pipeline; step five: selecting a plastic pipe; step six: the plastic pipe penetrates into the steel pipe inner production line; step seven: fixing the steel pipe on a frame; step eight: lining plastic composite wires; step nine: treating excess materials of the pipe orifice; step ten: inspecting the steel-plastic pipe; step eleven: an internal fixed ring is embedded, and 304 stainless steel is adopted, so that the national drinking water sanitation standard is met; step twelve: indent/expand back lock; step thirteen: a product code spraying machine; fourteen steps: a packer for binding and packing according to the standard number of the steel-plastic pipes; step fifteen: passing the qualified product through a bin; sixthly, the steps are as follows: the pipe cap is worn to prevent pollution in the process of storage and transportation, the adhesion of the inner walls of the plastic pipe and the steel pipe is improved through the steps, the corrosion resistance is high, and the production quality of the composite pipe is guaranteed.

Detailed Description

The invention discloses a composite tube production process, which can be realized by appropriately improving process parameters by a person skilled in the art by referring to the content in the text. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the process of the present invention has been described in terms of preferred embodiments, it will be apparent to those skilled in the art that the techniques of the present invention may be practiced and applied by modifying or appropriately combining the processes described herein without departing from the spirit and scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The invention is further illustrated by the following examples.

A production process of a composite pipe comprises the following steps: inspecting the selected steel pipe material by workers before plastic lining, wherein the selected steel pipe material must be a hot-dip galvanized steel pipe, the hot-dip galvanized steel pipe must strictly execute GB/T30091, British standard BS1387 and BS EN10255, each hot-dip galvanized steel pipe must adopt No. 0 zinc, and the inside and the outside of the pipe are subjected to special anti-corrosion treatment;

step two: grinding pipe orifices, wherein each hot-dip galvanized steel pipe needs to be ground by workers before being lined with plastic, so that the surface of the inner wall orifice of the pipeline meets the plastic lining requirement, and the perfect combination of a plastic pipe, the hot-dip galvanized steel pipe and an inner solid ring is ensured;

step three: polishing and grinding the inner wall of the pipeline, namely polishing and grinding the inner wall of the pipeline by adopting double-screw pipeline inner wall polishing equipment, cleaning dirt and oxidation on the inner wall of the pipeline within 15 seconds, and polishing to obtain a certain roughness and a smooth surface, so that the adhesion between the pipeline and the PE pipe is enhanced, and the quality and the corrosion prevention effect are improved;

step four: the inner wall of the pipeline is subjected to sand blasting treatment, the inner walls of all the hot-dip galvanized steel pipes of the internally-fixed ring steel-plastic pipe are subjected to further sand blasting treatment after being polished, the inner wall of the zinc pipe subjected to sand blasting is free of dust accumulation, obvious inner burrs, zinc slag, zinc nodules and the like, and the roughness meets the national lining plastic standard;

step five: selecting a plastic pipe, wherein the produced plastic pipe is smooth and free from leak and caking phenomena, the limit deviation of the wall thickness on the same section is not more than 14%, and the wall thickness of the lining pipe in each specification is in accordance with the regulation of GB/T28897 standard;

step six: the plastic pipe penetrates into the steel pipe inner production line, and the plastic pipe penetrates into the steel pipe in a mechanical mode by using the steel pipe port processing auxiliary device to achieve first-stage fixation;

step seven: fixing the steel pipes on a frame, fixing the hot-dip galvanized steel pipes penetrated with the plastic pipes on a heating frame of a steel pipe compound machine one by one, and fixing 4-8 steel pipes at a time by adopting different constant-pressure high-frequency plastic lining heating machines according to the sizes of different steel pipes so as to meet the production requirements;

step eight: the lining plastic composite wire finishes the composite process of the steel plastic pipe through high-frequency induction heating and high-temperature and high-pressure processes, and different production machines are adopted to process each steel plastic pipe according to the sizes of different steel pipes;

step nine: processing pipe orifice excess materials, cutting off excess plastics at two ends of the steel pipe, and polishing and finishing;

step ten: the steel-plastic pipe is inspected, and the steel-plastic pipe is firstly inspected to determine whether the steel-plastic pipe is completely combined and whether the steel-plastic pipe is smooth and has no excess plastic;

step eleven: an internal fixed ring is embedded, and 304 stainless steel is adopted, so that the national drinking water sanitation standard is met;

step twelve: the pressure groove/expansion back locking is realized by using inner wall expansion equipment of the inner fixed ring and a special pressure sheave wheel for the inner fixed ring to press the groove, so that the problem of groove rubber opening is solved, and the pressure bearing capacity of the pipe orifice and the temperature resistance of hot water are improved;

step thirteen: the product code spraying machine adopts a code spraying machine to spray and print marks on the steel pipe body by using a steel pipe marking machine, thereby preventing counterfeiting and faking;

fourteen steps: a packer for binding and packing according to the standard number of the steel-plastic pipes;

step fifteen: passing the qualified product through a bin;

sixthly, the steps are as follows: the pipe cap is worn to prevent the pollution in the storage and transportation process.

All hot-galvanized pipes in the first step of the composite pipe production process have to be measured before plastic lining, and the GB/T28897-2012 standard has to be met.

And in the second production process step of the composite pipe, workers need to manually polish the hot-dip galvanized steel pipe for 20 seconds.

The inner wall of the hot galvanized pipe after polishing and grinding in the third production process step of the composite pipe has no obvious zinc slag, welding line and remnants, and the height of the welding line is less than 0.1 mm.

The polyethylene adopted in the fifth step of the composite pipe production process must be a material with a national famous brand to ensure the quality of the plastic pipe, the temperature for producing the plastic pipe is strictly controlled between 150 ℃ and 155 ℃, the PE, the adhesive and the color master are mixed according to the proportion, the production time of each plastic pipe is controlled to be 1 minute, and the quality is strictly controlled.

And in the ninth production process step of the composite pipe, when the redundant plastic pipe is cut, a cutting blade machine is adopted, so that the redundant plastic pipe can be cut off at one time.

To sum up, specifically, the method comprises the following steps: inspecting before plastic lining; step two: polishing the pipe orifice; step three: polishing and grinding the inner wall of the pipeline; step four: carrying out sand blasting treatment on the inner wall of the pipeline; step five: selecting a plastic pipe; step six: the plastic pipe penetrates into the steel pipe inner production line; step seven: fixing the steel pipe on a frame; step eight: lining plastic composite wires; step nine: treating excess materials of the pipe orifice; step ten: inspecting the steel-plastic pipe; step eleven: an internal fixed ring is embedded, and 304 stainless steel is adopted, so that the national drinking water sanitation standard is met; step twelve: indent/expand back lock; step thirteen: a product code spraying machine; fourteen steps: a packer for binding and packing according to the standard number of the steel-plastic pipes; step fifteen: passing the qualified product through a bin; sixthly, the steps are as follows: the pipe cap is worn to prevent pollution in the process of storage and transportation, the adhesion of the inner walls of the plastic pipe and the steel pipe is improved through the steps, the corrosion resistance is high, and the production quality of the composite pipe is guaranteed.

It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.