CN111043408A - Novel stainless steel seamless steel pipe - Google Patents
Novel stainless steel seamless steel pipe Download PDFInfo
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- CN111043408A CN111043408A CN201911084386.8A CN201911084386A CN111043408A CN 111043408 A CN111043408 A CN 111043408A CN 201911084386 A CN201911084386 A CN 201911084386A CN 111043408 A CN111043408 A CN 111043408A
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- stainless steel
- steel pipe
- outer shell
- steel
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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
- F16L9/02—Rigid pipes of metal
- F16L9/04—Reinforced pipes
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0336—Noise absorbers by means of sound-absorbing materials
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/041—Devices damping pulsations or vibrations in fluids specially adapted for preventing vibrations
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
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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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
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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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
Abstract
The invention relates to the technical field of seamless steel pipes, in particular to a novel stainless steel seamless steel pipe, which comprises a stainless steel seamless steel pipe body, wherein the stainless steel seamless steel pipe body is composed of a plastic film, an outer shell, a strong steel pipe, a heat preservation layer, a sound insulation layer, an anti-corrosion layer and a buffer layer, the outer part of the outer shell is arranged inside the plastic film, the strong steel pipes are arranged inside the outer shell, the bottom of the outer shell is arranged outside the heat preservation layer, heat preservation cotton is filled inside the heat preservation layer, and the bottom of the heat preservation layer is arranged outside the buffer layer. The novel stainless steel seamless steel pipe has the advantages that the novel stainless steel seamless steel pipe is small in weight, the stainless steel seamless steel pipe is very convenient to carry, the stainless steel seamless steel pipe is good in using effect, the hollow cavity of the reinforcing steel pipe reduces the weight of the outer shell, the weight of the stainless steel seamless steel pipe body is reduced, when the buffer layer is subjected to external pressure, the stainless steel seamless steel pipe body is well protected, and the stainless steel seamless steel pipe body is not prone to damage.
Description
Technical Field
The invention relates to the technical field of seamless steel pipes, in particular to a novel stainless steel seamless steel pipe.
Background
Stainless steel pipe, it is a difficult rusty hollow steel pipe, stainless steel pipe is a hollow rectangular cylindric steel, and his application scope is used as the pipeline of transported substance fluid, mainly extensively is used for industrial pipeline and mechanical structure parts such as oil, chemical industry, medical treatment, food, light industry, mechanical instrument, and the stainless steel pipe chooses the material to be for acidproof and heat-resisting brand steel billet, through heating, perforation, sizing, hot rolling, cutting and form, the classification of stainless steel pipe: stainless steel seamless steel pipes and stainless steel welded steel pipes (seamed steel pipes) are classified into circular pipes and special pipes according to the outer diameter of the steel pipes, and are widely used as circular steel pipes.
The volume of current stainless steel seamless steel pipe is great, stainless steel seamless steel pipe is the inconvenience very when the transport, the effect of use is relatively poor, stainless steel seamless steel pipe is receiving outside temperature's influence, stainless steel seamless steel pipe breaks easily, the less noise that the air produced from stainless steel seamless steel pipe when passing through, there is not anticorrosive protection in the stainless steel seamless steel pipe, when carrying or receiving external pressure, stainless steel seamless steel pipe easily takes place to damage, consequently need to develop a novel stainless steel seamless steel pipe urgently.
Disclosure of Invention
The invention aims to provide a novel stainless steel seamless steel tube, which solves the problems that the stainless steel seamless steel tube proposed in the background technology has larger volume, is very inconvenient to carry and has poor use effect, the stainless steel seamless steel tube is easy to break under the influence of external temperature, air generates less noise when passing through the stainless steel seamless steel tube, the stainless steel seamless steel tube is not internally provided with anticorrosion protection, and the stainless steel seamless steel tube is easy to damage during carrying or external pressure.
The technical scheme of the invention is as follows: the utility model provides a novel stainless steel seamless steel pipe, includes stainless steel seamless steel pipe body, stainless steel seamless steel pipe body comprises plastic film, shell body, powerful reinforcing bar pipe, heat preservation, puigging, anti-corrosion coating and buffer layer, the outside setting of shell body is in plastic film's inside, the inside of shell body all is provided with powerful reinforcing bar pipe, the bottom of shell body sets up in the outside of heat preservation, the inside packing of heat preservation has the heat preservation cotton, the bottom setting of heat preservation is in the outside of buffer layer.
Furthermore, the reinforcing steel bar pipes are distributed around the inside of the outer shell at equal intervals in an annular mode, and reinforcing steel bar pipe hollow cavities are formed in the reinforcing steel bar pipes.
Further, the inside of buffer layer is provided with buffer spacer, and buffer spacer is the annular equidistance and distributes around the buffer layer.
Further, the bottom setting of buffer layer is in the outside of puigging, the inside packing of puigging has soundproof cotton, the inside of buffer layer is provided with the cavity.
Furthermore, the inside of puigging is provided with anti-corrosion coating, one side of shell body is provided with the connector.
A production process of a novel stainless steel seamless steel pipe,
s1, preparing and heating raw materials: preparing a round steel blank, conveying the round steel blank into a smelting furnace through a conveyor belt to heat the round steel blank, and conveying the round steel blank into the smelting furnace to heat;
s2, hot rolling and perforating: hot rolling, namely extruding a round steel blank, punching the round steel blank by a pressure puncher after the round steel blank is discharged from a furnace, after punching, carrying out three-roller skew rolling, continuous rolling or extrusion on the round steel blank, after extrusion, removing a pipe, sizing, and straightening after sizing, wherein the shell is formed, holes are drilled in the shell, and a strong steel bar pipe is welded in the shell;
s3, acid pickling treatment and drying: pickling the outer shell by using an acid liquid by using a dipping pickling method to remove surface oxide skin, and drying by using a dryer;
s4, grinding and lubricating: after pickling the outer shell, polishing the outer shell in a polishing machine, and after polishing, coating oil on the outer shell;
s5, cold rolling treatment: annealing the outer shell of the steel pipe, and repeatedly cold-rolling the outer shell for multiple times through a cold rolling unit;
s6, steel pipe quality inspection: carrying out a hydrostatic test on a steel pipe hydrostatic test machine, and detecting if the outer shell of the steel pipe has problems such as cracks, bubbles and the like;
s7, steel pipe machining and forming: the outer part of shell body sets up plastic film, and the inside of shell body sets up the heat preservation, the inside packing of heat preservation has the heat preservation cotton, and the inside of heat preservation sets up the buffer layer, add buffer spacer in the buffer layer, and buffer spacer's inside sets up anti-corrosion coating.
Further, in S1, the round steel billet is sent into a furnace to be heated, and the heating temperature is 1100 to 1200 ℃.
Further, in S3, a pickling inhibitor is added during pickling to prevent the steel pipe from being excessively corroded by acid, and the temperature during pickling is controlled to be 15-25 ℃.
Further, in S3, the drying process is performed by a dryer, the temperature during drying is controlled to be 50 to 120 ℃, and the drying time is controlled to be 0.7 to 1 hour.
Further, in the S5, the rotating speed of the cold rolling mill set is 800-500 rpm, in the S7, the heat insulation cotton is heat insulation cotton, and the anti-corrosion layer is a polyethylene anti-corrosion coating.
The invention provides a novel stainless steel seamless steel tube through improvement, compared with the prior art, the novel stainless steel seamless steel tube has the following improvements and advantages:
(1) the novel stainless steel seamless steel pipe is light in weight, convenient to carry and good in using effect.
(2) According to the stainless steel seamless steel tube, the heat insulation layer and the strong steel tubes are arranged, the strong steel tubes are arranged inside the outer shell, the bottom of the outer shell is arranged outside the heat insulation layer, heat insulation cotton is filled inside the heat insulation layer, the heat insulation cotton is used for carrying out heat insulation protection on the inside of the stainless steel seamless steel tube body, the hollow cavities of the steel tubes reduce the weight of the outer shell, the weight of the stainless steel seamless steel tube body is reduced, and the stainless steel seamless steel tube is lighter and more portable in the moving process.
(3) According to the stainless steel seamless steel tube, the anticorrosion layer and the sound insulation layer are arranged, the polyethylene anticorrosion coating is adopted as the anticorrosion layer, the inside of the stainless steel seamless steel tube body is protected from corrosion, and the sound insulation cotton enables the weight of the inside of the stainless steel seamless steel tube body to be reduced, and meanwhile, the small noise generated when air passes through the stainless steel seamless steel tube body is reduced.
(4) According to the stainless steel seamless steel tube, the buffer layer is arranged, the buffer gasket in the buffer layer buffers the pressure outside the stainless steel seamless steel tube body, the vibration inside the stainless steel seamless steel tube body is reduced, the stainless steel seamless steel tube body is well protected when external pressure is applied, and the stainless steel seamless steel tube body is not easy to damage.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a first cross-sectional view of the present invention;
FIG. 3 is a second cross-sectional view of the present invention;
FIG. 4 is a schematic perspective view of a buffer layer according to the present invention;
fig. 5 is a perspective view of the outer casing of the present invention.
Description of reference numerals:
1 stainless steel seamless steel pipe body, 2 plastic film, 3 outer casings, 4 powerful reinforcing steel pipes, 5 heat preservation layers, 6 buffer gaskets, 7 cavities, 8 sound insulation layers, 9 heat preservation cotton, 10 sound insulation cotton, 11 anti-corrosion layers, 12 reinforcing steel pipe cavities, 13 buffer layers and 14 connectors.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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 provides a novel stainless steel seamless steel tube through improvement, as shown in fig. 1-5, the novel stainless steel seamless steel tube comprises a stainless steel seamless steel tube body 1, wherein the stainless steel seamless steel tube body 1 is composed of a plastic film 2, an outer shell 3, a strong steel tube 4, a heat preservation layer 5, a sound insulation layer 8, an anti-corrosion layer 11 and a buffer layer 13, the outer part of the outer shell 3 is arranged inside the plastic film 2, the strong steel tube 4 is arranged inside the outer shell 3, the bottom of the outer shell 3 is arranged outside the heat preservation layer 5, the heat preservation layer 5 is filled with heat preservation cotton 9, the heat preservation cotton 9 is used for heat preservation and protection inside the stainless steel seamless steel tube body 1, and the bottom of the heat preservation layer 5 is arranged outside the buffer layer 13.
Further, the reinforcing steel bar pipes 4 are distributed around the inside of the outer shell 3 at equal intervals in an annular mode, the reinforcing steel bar pipes 4 can support the outer shell 3, reinforcing steel bar pipe hollow cavities 12 are formed in the reinforcing steel bar pipes 4, the reinforcing steel bar pipe hollow cavities 12 reduce the weight of the outer shell 3, the weight of the stainless steel seamless steel pipe body 1 is reduced, and the stainless steel seamless steel pipe is light and convenient in the moving process.
Further, the inside of buffer layer 13 is provided with buffer gasket 6, and buffer gasket 6 is the annular equidistance and distributes around buffer layer 13, and buffer gasket 6 cushions the outside pressure of stainless steel seamless steel pipe body 1, reduces the inside vibrations of stainless steel seamless steel pipe body 1, and when receiving the external pressure, stainless steel seamless steel pipe body 1 has obtained better protection, makes stainless steel seamless steel pipe body 1 not fragile.
Further, the bottom of buffer layer 13 sets up in the outside of puigging 8, and the inside packing of puigging 8 has soundproof cotton 10, and soundproof cotton 10 makes the inside weight reduction of stainless steel seamless steel pipe body 1, reduces the less noise that the air produced from stainless steel seamless steel pipe body 1 process time, and the inside of buffer layer 13 is provided with cavity 7, and cavity 7 reduces the volume of stainless steel seamless steel pipe body 1, and the weight of stainless steel seamless steel pipe body 1 is lighter.
Further, the inside of puigging 8 is provided with anti-corrosion coating 11, and anti-corrosion coating 11 is the anticorrosive coating of polyethylene, carries out anticorrosive protection to the inside of stainless steel seamless steel pipe body 1, and one side of shell body 3 is provided with connector 14, and other steel pipes can carry out the joint in connector 14.
A production process of a novel stainless steel seamless steel pipe,
s1, preparing and heating raw materials: preparing a round steel blank, conveying the round steel blank into a smelting furnace through a conveyor belt, and heating the round steel blank, wherein the round steel blank is conveyed into the smelting furnace to be heated, and the heating temperature is 1200 ℃;
s2, hot rolling and perforating: hot rolling, namely extruding a round steel blank, punching the round steel blank by a pressure puncher after the round steel blank is discharged from a furnace, after punching, carrying out three-roller skew rolling, continuous rolling or extrusion on the round steel blank, after extrusion, removing a pipe, sizing, and then straightening to form an outer shell 3, drilling the inner part of the outer shell 3, and welding a strong steel bar pipe 4 into the inner part of the outer shell 3;
s3, acid pickling treatment and drying: pickling the outer shell 3 with an acidic liquid by using a dipping and pickling method to remove surface oxide skin, adding a pickling corrosion inhibitor during pickling to prevent over-strong corrosion of acid to the steel pipe, controlling the temperature during pickling to be 25 ℃, and drying by using a dryer to reduce the humidity outside the outer shell 3, wherein the temperature during drying is controlled to be 80 ℃, and the drying time is 1 hour;
s4, grinding and lubricating: after the outer shell 3 is pickled, the outer shell 3 is ground in a grinding machine, and after grinding, the outer shell 3 is protected by oil coating treatment;
s5, cold rolling treatment: annealing the outer shell 3 of the steel pipe, and repeatedly cold-rolling the outer shell for multiple times through a cold rolling unit, wherein the rotating speed of the cold rolling unit is 500 r/min;
s6, steel pipe quality inspection: carrying out a hydrostatic test on a steel pipe hydrostatic test machine, and detecting if the outer shell 3 of the steel pipe has problems such as cracks and bubbles;
s7, steel pipe machining and forming: the outside of shell body 3 sets up plastic film 2, and the inside of shell body 3 sets up heat preservation 5, the inside packing of heat preservation 5 has heat preservation cotton 9, heat preservation cotton 9 is thermal-insulated heat preservation cotton, and the inside of heat preservation 5 sets up buffer layer 13, add buffer gasket 6 in the buffer layer 13, and the inside of buffer gasket 6 sets up anti-corrosion coating 11, anti-corrosion coating 11 is the anticorrosive coating of polyethylene, carry out anticorrosive protection to the inside of stainless steel seamless steel pipe body 1, stainless steel seamless steel pipe body 1 shaping.
The working principle is as follows: preparing a round steel blank, conveying the round steel blank into a smelting furnace through a conveyor belt to heat the round steel blank, conveying the round steel blank into the smelting furnace to heat, wherein the heating temperature is 1200 ℃, perforating the round steel blank through a pressure perforating machine after the round steel blank is discharged from the smelting furnace, after the perforation, carrying out three-roller skew rolling, continuous rolling or extrusion on the round steel blank, after the extrusion, removing the tube and sizing, straightening after fixed-length processing, forming the outer shell 3, drilling the hole in the outer shell 3, welding the reinforcing steel tube 4 into the outer shell 3, using an immersion pickling method by using acidic liquid, adding a pickling corrosion inhibitor during pickling, preventing the corrosion of acid on the steel tube from being too strong, controlling the temperature during pickling at 25 ℃, pickling the outer shell 3, removing surface oxide skin, drying by a dryer, drying by the dryer, controlling the temperature during the drying at 80 ℃, controlling the drying time at 1 hour, pickling the outer shell 3, the outer shell 3 is placed into a coping machine for coping, after the coping, the outer shell 3 is subjected to oil coating treatment, the outer shell 3 of the steel pipe is subjected to annealing treatment and is repeatedly subjected to cold rolling for multiple times through a cold rolling unit, the rotating speed of the cold rolling unit is 500 revolutions per minute, a hydrostatic test is carried out on a steel pipe hydrostatic test machine, if the outer shell 3 of the steel pipe has problems such as cracks and bubbles, the outer shell 3 of the steel pipe is detected out, a plastic film 2 is arranged outside the outer shell 3, a heat preservation layer 5 is arranged inside the outer shell 3, heat preservation cotton 9 is filled inside the heat preservation layer 5, the heat preservation cotton 9 is heat insulation cotton, a buffer layer 13 is arranged inside the heat preservation layer 5, a buffer gasket 6 is added into the buffer layer 13, an anti-corrosion layer 11 is arranged inside the buffer.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a novel stainless steel seamless steel pipe, includes stainless steel seamless steel pipe body (1), its characterized in that: stainless steel seamless steel pipe body (1) comprises plastic film (2), shell body (3), powerful reinforcing bar pipe (4), heat preservation (5), puigging (8), anti-corrosion coating (11) and buffer layer (13), the outside setting of shell body (3) is in the inside of plastic film (2), the inside of shell body (3) all is provided with powerful reinforcing bar pipe (4), the bottom setting of shell body (3) is in the outside of heat preservation (5), the inside packing of heat preservation (5) has heat preservation cotton (9), the bottom setting of heat preservation (5) is in the outside of buffer layer (13).
2. The novel stainless steel seamless steel tube according to claim 1, characterized in that: the reinforcing steel bar pipes (4) are distributed around the inner part of the outer shell (3) in an annular shape at equal intervals, and reinforcing steel bar pipe hollow cavities (12) are arranged inside the reinforcing steel bar pipes (4).
3. The novel stainless steel seamless steel tube according to claim 1, characterized in that: the buffer layer (13) is internally provided with buffer gaskets (6), and the buffer gaskets (6) are annularly and equidistantly distributed around the buffer layer (13).
4. The novel stainless steel seamless steel tube according to claim 1, characterized in that: the bottom of buffer layer (13) sets up in the outside of puigging (8), the inside of puigging (8) is filled with soundproof cotton (10), the inside of buffer layer (13) is provided with cavity (7).
5. The novel stainless steel seamless steel tube according to claim 1, characterized in that: the sound insulation layer (8) is internally provided with an anti-corrosion layer (11), and one side of the outer shell (3) is provided with a connecting port (14).
6. The production process of the novel stainless steel seamless steel pipe according to claim 1, characterized in that:
s1, preparing and heating raw materials: preparing a round steel blank, conveying the round steel blank into a smelting furnace through a conveyor belt to heat the round steel blank, and conveying the round steel blank into the smelting furnace to heat;
s2, hot rolling and perforating: hot rolling, namely extruding a round steel blank, punching the round steel blank by a pressure puncher after the round steel blank is discharged from a furnace, after punching, carrying out three-roller inclined rolling, continuous rolling or extrusion on the round steel blank, after extrusion, removing a pipe, sizing, and straightening after sizing, wherein the outer shell (3) is formed, holes are drilled in the outer shell (3), and the strong steel bar pipe (4) is welded into the outer shell (3);
s3, acid pickling treatment and drying: pickling the outer shell (3) by using an acid liquid by using a dipping pickling method to remove surface oxide skin, and drying by using a dryer;
s4, grinding and lubricating: after the outer shell (3) is pickled, the outer shell (3) is ground in a grinding machine, and after grinding, the outer shell (3) is oiled;
s5, cold rolling treatment: annealing the outer shell (3) of the steel pipe, and repeatedly cold-rolling the steel pipe for multiple times through a cold-rolling unit;
s6, steel pipe quality inspection: carrying out a hydrostatic test on a steel pipe hydrostatic test machine, and detecting if the outer shell (3) of the steel pipe has problems such as cracks, bubbles and the like;
s7, steel pipe machining and forming: the outer portion of shell body (3) sets up plastic film (2), and the inside of shell body (3) sets up heat preservation (5), the inside packing of heat preservation (5) has heat preservation cotton (9), and the inside of heat preservation (5) sets up buffer layer (13), add buffer pad (6) in buffer layer (13), and the inside of buffer pad (6) sets up anti-corrosion coating (11), stainless steel seamless steel pipe body (1) shaping.
7. The novel stainless steel seamless steel tube according to claim 6, characterized in that: in S1, the round steel billet is sent into a furnace to be heated, and the heating temperature is 1100 to 1200 ℃.
8. The novel stainless steel seamless steel tube according to claim 6, characterized in that: and in the S3, adding an acid pickling corrosion inhibitor during acid pickling to prevent the steel pipe from being excessively corroded by acid, and controlling the temperature during acid pickling to be 15-25 ℃.
9. The novel stainless steel seamless steel tube according to claim 6, characterized in that: and in the step S3, drying treatment is carried out through a dryer, the temperature during drying is controlled to be 50-120 ℃, and the drying time is 0.7-1 hour.
10. The novel stainless steel seamless steel tube according to claim 6, characterized in that: in the step S5, the rotating speed of the cold rolling mill set is 800-500 rpm, in the step S7, the heat insulation cotton (9) is heat insulation cotton, and the anti-corrosion layer (11) is a polyethylene anti-corrosion coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911084386.8A CN111043408A (en) | 2019-11-08 | 2019-11-08 | Novel stainless steel seamless steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911084386.8A CN111043408A (en) | 2019-11-08 | 2019-11-08 | Novel stainless steel seamless steel pipe |
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| CN111043408A true CN111043408A (en) | 2020-04-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111845912A (en) * | 2020-06-18 | 2020-10-30 | 浙江久鼎机械有限公司 | Round hot-rolled seamless steel tube for vehicle and preparation process thereof |
| CN112664758A (en) * | 2020-12-16 | 2021-04-16 | 无锡必胜必精密钢管有限公司 | Steel pipe and machining process thereof |
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