CN113751961A - Production process of stainless steel pipe with ultrahigh cleanliness - Google Patents
Production process of stainless steel pipe with ultrahigh cleanliness Download PDFInfo
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- CN113751961A CN113751961A CN202110871259.3A CN202110871259A CN113751961A CN 113751961 A CN113751961 A CN 113751961A CN 202110871259 A CN202110871259 A CN 202110871259A CN 113751961 A CN113751961 A CN 113751961A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
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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
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- Cleaning In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a production process of an ultra-high cleanliness stainless steel pipe, which comprises the following steps: preparing a pierced billet, cold rolling for the first time, cleaning for the first time, aerobic annealing, pre-treating for the first time, cold rolling for the second time, cleaning for the second time, anaerobic annealing, rough straightening, pre-treating for the second time, cold drawing, cleaning for the third time, fine straightening, fixed cutting and chamfering, internal polishing, cleaning of an inner wall, external polishing, internal and external cleaning, inspection and warehousing. The steel pipe produced by the invention has uniform internal quality, high surface quality, good roughness of the internal and external surfaces, high cleanliness and high production efficiency.
Description
Technical Field
The invention relates to a production process of a stainless steel pipe with ultrahigh cleanliness, belonging to the technical field of stainless steel pipe production.
Background
The stainless steel pipe with high cleanliness and ultrahigh cleanliness is mainly applied to scenes with extremely high requirements on roughness and cleanliness of inner and outer surfaces of pipelines, such as photoelectric, semiconductor, medical, pharmaceutical, high-purity gas and fluid pipeline systems and the like. The existing production process of the stainless steel pipe with high cleanliness mainly adopts two types, namely a BA cleanliness stainless steel pipe subjected to mechanical polishing and bright annealing treatment and an EP grade cleanliness stainless steel pipe subjected to electrolytic polishing treatment, wherein the production process of the BA cleanliness stainless steel pipe needs to be subjected to cold deformation processing and annealing heat treatment procedures such as multiple cold rolling and cold drawing: foreign matters such as oil stains and the like attached to the inner wall of the steel pipe after cold deformation processing are easy to form local high temperature in the subsequent annealing and heating process, so that the internal performance of the steel pipe material is changed to influence the internal quality, and meanwhile, the surface quality of the steel pipe is influenced by the print stains; the polishing stability of the inner wall of the stainless steel pipe is poor, the polishing precision is low, and the polishing efficiency is low; the inner wall of the stainless steel pipe is scrubbed by manual operation, so that the efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects and provide the production process of the stainless steel pipe with ultrahigh cleanliness, which has uniform internal quality, high surface quality, good roughness of the internal and external surfaces, high cleanliness and high production efficiency.
The purpose of the invention is realized as follows:
a production process of an ultra-high cleanliness stainless steel pipe comprises the following steps:
step one, preparing a pierced billet: the stainless steel pierced billet is manufactured by obliquely rolling and perforating stainless steel round steel or welding a stainless steel plate;
step two, first cold rolling: sending the stainless steel pierced billet into a cold rolling mill for primary cold rolling processing;
step three, first cleaning: putting the stainless steel pipe subjected to the first cold rolling into a cleaning pool for cleaning;
step four, aerobic annealing: putting the stainless steel pipe subjected to the first cleaning into an annealing furnace for annealing treatment;
step five, first pretreatment: placing the stainless steel pipe subjected to the aerobic annealing treatment into a pickling tank for pickling treatment, a rinsing tank for rinsing treatment and a degreasing tank for degreasing treatment;
step six, second cold rolling: the stainless steel pipe after the primary pickling enters a cold rolling mill for secondary cold rolling processing;
step seven, cleaning for the second time: putting the stainless steel pipe subjected to the second cold rolling into a cleaning pool for cleaning;
step eight, anaerobic annealing: putting the stainless steel pipe subjected to the secondary cleaning into an annealing furnace protected by hydrogen for bright annealing treatment to ensure that no oxide layer is generated on the inner wall and the outer surface of the stainless steel pipe;
step nine, rough straightening: placing the stainless steel pipe subjected to anaerobic annealing into a rough straightening machine for straightening treatment, and correcting deformation generated by previous pass heat treatment;
step ten, second pretreatment: placing the roughly straightened stainless steel pipe into a pickling tank for pickling treatment, a washing tank for washing treatment and a degreasing tank for degreasing treatment;
step eleven, cold drawing: placing the stainless steel pipe subjected to the second pretreatment into cold drawing equipment for cold drawing deformation treatment;
step twelve, cleaning for the third time: placing the stainless steel pipe subjected to cold drawing treatment into a cleaning pool for cleaning;
thirteen step, fine straightening: placing the stainless steel pipe cleaned for the third time into a precision straightening unit for straightening treatment;
step fourteen, cutting and chamfering: the stainless steel pipe after the fine straightening enters a pipe cutting device to cut the pipe according to the fixed length, and then chamfering treatment is carried out on the end part of the pipe;
fifteen, inner polishing: the stainless steel pipe subjected to fixed cutting and chamfering is sent into a high-efficiency steel pipe inner wall polishing machine, and steel pipe inner wall polishing treatment is carried out on a plurality of steel pipes simultaneously, so that the polishing efficiency is improved;
sixthly, inner wall cleaning: the fiber cloth blocks soaked with cleaning agents are plugged into the inner holes of the stainless steel pipes after the inner parts of the stainless steel pipes are polished by adopting a high-efficiency steel pipe inner wall scrubbing tool, high-pressure gas is introduced to push the fiber cloth blocks to simultaneously penetrate through the steel pipes so as to scrub the inner holes of the steel pipes, and the scrubbing efficiency and the scrubbing cleanliness are improved;
seventhly, external polishing: the stainless steel pipe with the cleaned inner wall enters an external polishing machine to polish the outer surface of the steel pipe;
eighteen, internal and external cleaning: scrubbing the outer surface of the stainless steel pipe subjected to external polishing by using fiber cloth soaked with a cleaning agent, and cleaning the inner hole of the steel pipe according to the inner wall cleaning method of the sixteenth step;
nineteen steps, inspection and warehousing: and (4) carrying out quality inspection on the stainless steel pipe subjected to internal and external cleaning, and packaging and warehousing in a dust-free workshop after the inspection is qualified.
The invention relates to a production process of a stainless steel pipe with ultrahigh cleanliness, wherein the cleaning of cleaning pools in the third step, the seventh step and the twelfth step is realized based on a stainless steel pipe cleaning device, and the stainless steel pipe cleaning device comprises a box body, wherein the box body is divided into an upper cleaning pool and a lower liquid storage pool by a partition plate horizontally arranged in the middle; the liquid storage tank is communicated with a circulating tank arranged beside the box body, and a circulating pump is arranged on the circulating tank; the cleaning pool is internally provided with a supporting plate in an inclined manner, a water inlet of the cleaning pool is communicated with the circulating pump, and a water outlet of the cleaning pool is connected with the liquid storage pool through a valve.
The invention relates to a production process of a stainless steel pipe with ultrahigh cleanliness, wherein the inner wall polishing treatment of the fifteenth step is realized based on a high-efficiency stainless steel pipe inner wall polishing device, which comprises a rack and a polishing transmission mechanism arranged at the left end of the rack, wherein the rack is provided with a slide rail, a plurality of fixed pipes arranged above the slide rail in parallel and a traction mechanism arranged below the slide rail; the steel pipe clamping trolley is arranged on the sliding rail in a sliding mode, the supporting trolley is located on the left side of the steel pipe clamping trolley, adjacent supporting trolleys are connected through an iron chain, and the adjacent supporting trolleys are connected with the steel pipe clamping trolley through the iron chain; the supporting trolley is in sliding contact with the fixed pipe and plays a supporting role on the fixed pipe, the left end of the fixed pipe is fixedly arranged on the rack, a rotating shaft is rotatably arranged in the fixed pipe, the left end of the rotating shaft is in transmission connection with the polishing transmission mechanism, and the right end of the rotating shaft is provided with a polishing disc; the steel pipe clamping trolley is in transmission connection with the traction mechanism.
The invention relates to a production process of a stainless steel pipe with ultrahigh cleanliness, wherein the inner wall cleaning of the sixteenth step is realized by a tool for scrubbing the inner wall of the stainless steel pipe, and the inner wall cleaning process comprises a support, an air injection device arranged on the left side of the support and a collection device arranged on the right side of the support; the air injection device comprises an air cylinder, an air injection pipe arranged at the movable end of the air cylinder and a buffer part arranged at the nozzle of the air injection pipe; the gas ejector pipe is communicated with a high-pressure gas source; the buffer part is provided with a plurality of air outlets side by side, and the distance between the centers of the adjacent air outlets is integral multiple of the diameter of the steel pipe.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the stainless steel pipe cleaning procedure is arranged after each pass of cold deformation processing and before annealing heat treatment, so that the influence of local high temperature in the annealing heating process on the internal quality unevenness and the surface quality defect of the steel pipe material is avoided; the inner wall of the stainless steel pipe is polished by the high-efficiency inner wall polishing machine, so that the roughness of the inner wall of the stainless steel pipe is improved, and the polishing efficiency of the inner wall is improved; the improved inner wall scrubbing tool is used for scrubbing the inner wall of the stainless steel pipe, so that the scrubbing efficiency is improved, and the cleanliness of the inner wall of the stainless steel pipe is improved.
Drawings
FIG. 1 is a process flow diagram of the ultra-high cleanliness stainless steel tube production process of the present invention.
FIG. 2 is a schematic structural diagram of a cleaning device for an ultra-high cleanliness stainless steel tube production process of the present invention.
FIG. 3 is a schematic structural view of an inner wall polishing apparatus for an ultra-high cleanliness stainless steel tube production process of the present invention.
FIG. 4 is a schematic top view of the inner wall polishing apparatus for the ultra-high cleanliness stainless steel tube production process of the present invention.
FIG. 5 is a schematic structural view of an inner wall scrubbing tool in the ultra-high cleanliness stainless steel pipe production process.
FIG. 6 is a schematic view of the top view of the inner wall scrubbing tool in the ultra-high cleanliness stainless steel pipe production process of the present invention.
Wherein:
a stainless steel tube 101;
a box body 21, a clapboard 22, a cleaning pool 23, a liquid storage pool 24, a circulating pool 25, a circulating pump 26, a supporting plate 2301, a water inlet 2302 and a water outlet 2303;
the polishing machine comprises a frame 31, a polishing transmission mechanism 32, a slide rail 33, a fixed pipe 34, a traction mechanism 35, a supporting trolley 3301, a steel pipe clamping trolley 3302, an iron chain 3303, a rotating shaft 3401 and a polishing disc 3402;
the device comprises a bracket 41, an air injection device 42, a collecting device 43, an air cylinder 4201, an air injection pipe 4202, a buffer portion 4203, an air outlet 4204 and a high-pressure air source 4205.
Detailed Description
Referring to fig. 1 to 6, the ultra-high cleanliness stainless steel tube production process related by the present invention includes the following steps:
step one, preparing a pierced billet: the stainless steel pierced billet is manufactured by obliquely rolling and perforating stainless steel round steel or welding a stainless steel plate;
the pierced billet refers to a pipe formed by performing oblique rolling and piercing on a round pipe blank and then performing hot rolling on the round pipe blank by a pipe rolling mill, and generally refers to a pipe blank formed preliminarily in the cold rolling pipe industry, namely a raw material used for a cold rolling steel pipe.
Step two, first cold rolling: sending the stainless steel pierced billet into a cold rolling mill for primary cold rolling processing;
step three, first cleaning: putting the stainless steel pipe subjected to the first cold rolling into a cleaning pool for cleaning; the cleaning of the cleaning pool is realized based on a stainless steel pipe cleaning device, which comprises a box body 21, wherein the box body 21 is internally divided into an upper cleaning pool 23 and a lower liquid storage pool 24 by a partition plate 22 horizontally arranged in the middle; the liquid storage tank 24 is communicated with a circulating tank 25 arranged beside the box body 21, and a circulating pump 26 is arranged on the circulating tank 25; a supporting plate 2301 is obliquely arranged in the cleaning tank 23, a water inlet 2302 of the cleaning tank 23 is communicated with a circulating pump 26, and a water outlet 2303 of the cleaning tank 23 is connected with the liquid storage tank 24 through a valve;
firstly, a stainless steel pipe is hoisted and placed on a supporting plate 301 in a cleaning pool 23, the steel pipe is in an inclined state along with an obliquely arranged supporting plate 2301, a circulating pump 26 is started to send cleaning liquid in a liquid storage pool 24 into the cleaning pool 23, the liquid level of the cleaning liquid in an inner hole of the stainless steel pipe rises synchronously along with the slow rise of the liquid level of the cleaning liquid, air in the inner hole of the steel pipe is discharged upwards gradually, compared with common soaking cleaning, the inclined arrangement can enable the air in the steel pipe to be discharged more easily, the cleaning liquid is enabled to be in complete contact with the inner wall of the steel pipe for cleaning, when the liquid level exceeds the top of the steel pipe, the cleaning liquid in the cleaning pool 23 is discharged into the liquid storage pool 24 rapidly through a water outlet 2303, then the circulating pump 26 is started to send the cleaning liquid into the cleaning pool 23, and the cleaning is carried out for 3-5 times in a reciprocating manner, and the inner wall of the stainless steel pipe is cleaned;
step four, aerobic annealing: putting the stainless steel pipe subjected to the first cleaning into an annealing furnace for annealing treatment;
step five, first pretreatment: placing the stainless steel pipe subjected to the aerobic annealing treatment into a pickling tank for pickling treatment, a rinsing tank for rinsing treatment and a degreasing tank for degreasing treatment;
step six, second cold rolling: the stainless steel pipe after the primary pickling enters a cold rolling mill for secondary cold rolling processing;
step seven, cleaning for the second time: putting the stainless steel pipe subjected to the second cold rolling into a cleaning pool for cleaning in the same step three;
step eight, anaerobic annealing: putting the stainless steel pipe subjected to the secondary cleaning into an annealing furnace protected by hydrogen for bright annealing treatment to ensure that no oxide layer is generated on the inner wall and the outer surface of the stainless steel pipe;
step nine, rough straightening: placing the stainless steel pipe subjected to anaerobic annealing into a rough straightening machine for straightening treatment, and correcting deformation generated by previous pass heat treatment;
step ten, second pretreatment: placing the roughly straightened stainless steel pipe into a pickling tank for pickling treatment, a washing tank for washing treatment and a degreasing tank for degreasing treatment;
step eleven, cold drawing: placing the stainless steel pipe subjected to the second pretreatment into cold drawing equipment for cold drawing deformation treatment;
step twelve, cleaning for the third time: placing the stainless steel pipe subjected to cold drawing treatment into a cleaning pool for cleaning in the same step three;
thirteen step, fine straightening: placing the stainless steel pipe cleaned for the third time into a precision straightening unit for straightening treatment;
step fourteen, cutting and chamfering: the stainless steel pipe after the fine straightening enters a pipe cutting device to cut the pipe according to the fixed length, and then chamfering treatment is carried out on the end part of the pipe;
fifteen, inner polishing: the stainless steel pipe subjected to fixed cutting and chamfering is sent into a high-efficiency steel pipe inner wall polishing machine, and steel pipe inner wall polishing treatment is carried out on a plurality of steel pipes simultaneously, so that the polishing efficiency is improved; the high-efficiency steel pipe inner wall polishing machine comprises a rack 31 and a polishing transmission mechanism 32 arranged at the left end of the rack 31, wherein a slide rail 33, a plurality of fixed pipes 34 arranged above the slide rail 33 in parallel and a traction mechanism 35 arranged below the slide rail 33 are arranged on the rack 31; the steel pipe clamping trolley 3302 is arranged on the sliding rail 33 in a sliding mode, the supporting trolley 3301 is located on the left side of the steel pipe clamping trolley 3302, the adjacent supporting trolleys 3301 are connected through an iron chain 3303, and the adjacent supporting trolleys 3301 and the steel pipe clamping trolleys 3302 are connected through the iron chain 3303; the supporting trolley 3301 is in sliding contact with the fixed pipe 34 and supports the fixed pipe 34, the left end of the fixed pipe 34 is fixedly mounted on the rack 31, a rotating shaft 3401 is rotatably arranged in the fixed pipe 34, the left end of the rotating shaft 3401 is in transmission connection with the polishing transmission mechanism 32, and the right end of the rotating shaft 3401 is provided with a polishing disc 3402; the steel pipe clamping trolley 3302 is in transmission connection with the traction mechanism 35;
firstly, a plurality of stainless steel tubes 101 are fixedly arranged on a steel tube clamping trolley 3302, the steel tube clamping trolley 3302 is moved leftwards by a traction mechanism 35, a polishing disc 3402 enters the stainless steel tubes 101 to polish the inner holes, the polishing disc 3402 continuously goes deep into the stainless steel tubes 101 to polish, when the steel tube clamping trolley 3302 touches a supporting trolley 3301, the steel tube clamping trolley 3302 pushes the supporting trolley 3301 to move leftwards until the polishing disc 3402 polishes to the rightmost end of the stainless steel tubes 101; the steel pipe clamping trolley 3302 is moved rightwards by the traction mechanism 35, the polishing disc 3402 continues to retreat leftwards from the rightmost end of the stainless steel pipe 101 for polishing, after the steel pipe clamping trolley 3302 is separated from the supporting trolley 3301, the supporting trolley 3301 is pulled by an iron chain 3303 to move rightwards synchronously, so that the fixed pipe 34 is ensured to be supported timely, and the distance between the supporting trolley 3301 and the fixed pipe 34 is adjusted by changing the length of the iron chain 3303; when the polishing disc 3402 is separated from the pipe body from the left end of the stainless steel pipe 101, the simultaneous polishing work of the inner walls of the stainless steel pipes 101 is finished, and the whole polishing process is good in stability, long in service life and high in polishing efficiency;
sixthly, inner wall cleaning: the fiber cloth blocks soaked with cleaning agents are plugged into the inner holes of the stainless steel pipes after the inner parts of the stainless steel pipes are polished by adopting a high-efficiency steel pipe inner wall scrubbing tool, high-pressure gas is introduced to push the fiber cloth blocks to simultaneously penetrate through the steel pipes so as to scrub the inner holes of the steel pipes, and the scrubbing efficiency and the scrubbing cleanliness are improved; the efficient steel pipe inner wall scrubbing tool comprises a support 41, an air injection device 42 arranged on the left side of the support 41 and a collection device 43 arranged on the right side of the support 41; the gas injection device 42 comprises a cylinder 4201, a gas injection pipe 4202 arranged at the movable end of the cylinder 4201, and a buffer part 4203 arranged at the nozzle of the gas injection pipe 4202; the gas injection pipe 4202 is communicated with a high-pressure gas source 4205; a plurality of air outlets 4204 are arranged on the buffer portion 4203 side by side, and the center distance between adjacent air outlets 4204 is an integral multiple of the diameter of the steel pipe 101;
firstly, hoisting the steel pipe 101 to the bracket 41, moving the steel pipe 101 side by side to enable the inner hole end of the steel pipe 101 to correspond to the position of the gas outlet 4204, and plugging fiber cloth soaked in acetone into the pipe orifice; activating the air cylinder 4201 to push the air outlet 4204 to move towards the nozzle, and buffering the stroke of the air cylinder 4203 to ensure that the air outlet 4204 can be in full contact with the nozzle and keep a certain pressure; the gas injection pipe 4202 injects high-pressure gas into the pipe hole, and the high-pressure gas pushes the fiber cloth to scrub the inner wall and finally is discharged into the collecting device 43; the cylinder 4201 contracts, and the steel pipes 101 are moved side by the distance of one steel pipe outer diameter to start cleaning of the next group of steel pipes 101;
seventhly, external polishing: the stainless steel pipe with the cleaned inner wall enters an external polishing machine to polish the outer surface of the steel pipe;
eighteen, internal and external cleaning: scrubbing the outer surface of the stainless steel pipe subjected to external polishing by using fiber cloth soaked with a cleaning agent, and cleaning the inner hole of the steel pipe according to the inner wall cleaning method of the sixteenth step;
nineteen steps, inspection and warehousing: and (4) carrying out quality inspection on the stainless steel pipe subjected to internal and external cleaning, and packaging and warehousing in a dust-free workshop after the inspection is qualified.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.
Claims (4)
1. A production process of a stainless steel pipe with ultrahigh cleanliness is characterized by comprising the following steps: the production process of the stainless steel pipe with ultrahigh cleanliness comprises the following steps:
step one, preparing a pierced billet: the stainless steel pierced billet is manufactured by obliquely rolling and perforating stainless steel round steel or welding a stainless steel plate;
step two, first cold rolling: sending the stainless steel pierced billet into a cold rolling mill for primary cold rolling processing;
step three, first cleaning: putting the stainless steel pipe subjected to the first cold rolling into a cleaning pool for cleaning;
step four, aerobic annealing: putting the stainless steel pipe subjected to the first cleaning into an annealing furnace for annealing treatment;
step five, first pretreatment: placing the stainless steel pipe subjected to the aerobic annealing treatment into a pickling tank for pickling treatment, a rinsing tank for rinsing treatment and a degreasing tank for degreasing treatment;
step six, second cold rolling: the stainless steel pipe after the primary pickling enters a cold rolling mill for secondary cold rolling processing;
step seven, cleaning for the second time: putting the stainless steel pipe subjected to the second cold rolling into a cleaning pool for cleaning;
step eight, anaerobic annealing: putting the stainless steel pipe subjected to the secondary cleaning into an annealing furnace protected by hydrogen for bright annealing treatment to ensure that no oxide layer is generated on the inner wall and the outer surface of the stainless steel pipe;
step nine, rough straightening: placing the stainless steel pipe subjected to anaerobic annealing into a rough straightening machine for straightening treatment, and correcting deformation generated by previous pass heat treatment;
step ten, second pretreatment: placing the roughly straightened stainless steel pipe into a pickling tank for pickling treatment, a washing tank for washing treatment and a degreasing tank for degreasing treatment;
step eleven, cold drawing: placing the stainless steel pipe subjected to the second pretreatment into cold drawing equipment for cold drawing deformation treatment;
step twelve, cleaning for the third time: placing the stainless steel pipe subjected to cold drawing treatment into a cleaning pool for cleaning;
thirteen step, fine straightening: placing the stainless steel pipe cleaned for the third time into a precision straightening unit for straightening treatment;
step fourteen, cutting and chamfering: the stainless steel pipe after the fine straightening enters a pipe cutting device to cut the pipe according to the fixed length, and then chamfering treatment is carried out on the end part of the pipe;
fifteen, inner polishing: the stainless steel pipe subjected to fixed cutting and chamfering is sent into a high-efficiency steel pipe inner wall polishing machine, and steel pipe inner wall polishing treatment is carried out on a plurality of steel pipes simultaneously, so that the polishing efficiency is improved;
sixthly, inner wall cleaning: the fiber cloth blocks soaked with cleaning agents are plugged into the inner holes of the stainless steel pipes after the inner parts of the stainless steel pipes are polished by adopting a high-efficiency steel pipe inner wall scrubbing tool, high-pressure gas is introduced to push the fiber cloth blocks to simultaneously penetrate through the steel pipes so as to scrub the inner holes of the steel pipes, and the scrubbing efficiency and the scrubbing cleanliness are improved;
seventhly, external polishing: the stainless steel pipe with the cleaned inner wall enters an external polishing machine to polish the outer surface of the steel pipe;
eighteen, internal and external cleaning: scrubbing the outer surface of the stainless steel pipe subjected to external polishing by using fiber cloth soaked with a cleaning agent, and cleaning the inner hole of the steel pipe according to the inner wall cleaning method of the sixteenth step;
nineteen steps, inspection and warehousing: and (4) carrying out quality inspection on the stainless steel pipe subjected to internal and external cleaning, and packaging and warehousing in a dust-free workshop after the inspection is qualified.
2. The production process of an ultra-high cleanliness stainless steel pipe according to claim 1, characterized in that: the cleaning of the cleaning tanks in the third, seventh and twelfth steps is realized based on a stainless steel pipe cleaning device, which comprises a tank body (21), wherein the tank body (21) is internally divided into an upper cleaning tank (23) and a lower liquid storage tank (24) by a partition plate (22) horizontally arranged in the middle; the liquid storage tank (24) is communicated with a circulating tank (25) arranged beside the box body (21), and a circulating pump (26) is arranged on the circulating tank (25); the cleaning tank (23) is internally and obliquely provided with a supporting plate (2301), a water inlet (2302) of the cleaning tank (23) is communicated with a circulating pump (26), and a water outlet (2303) of the cleaning tank (23) is connected with the liquid storage tank (24) through a valve.
3. The production process of an ultra-high cleanliness stainless steel pipe according to claim 1, characterized in that: the inner wall polishing treatment of the fifteenth step is realized based on a high-efficiency stainless steel pipe inner wall polishing device, which comprises a rack (31) and a polishing transmission mechanism (32) arranged at the left end of the rack (31), wherein a slide rail (33), a plurality of fixed pipes (34) arranged above the slide rail (33) in parallel and a traction mechanism (35) arranged below the slide rail (33) are arranged on the rack (31); the steel pipe clamping trolley is characterized in that the sliding rail (33) is provided with a supporting trolley (3301) and a steel pipe clamping trolley (3302) in a sliding mode, the supporting trolley (3301) is located on the left side of the steel pipe clamping trolley (3302), adjacent supporting trolleys (3301) are connected through an iron chain (3303), and adjacent supporting trolleys (3301) and steel pipe clamping trolleys (3302) are connected through iron chains (3303); the supporting trolley (3301) is in sliding contact with the fixed pipe (34) and supports the fixed pipe (34), the left end of the fixed pipe (34) is fixedly mounted on the rack (31), the fixed pipe (34) is rotatably provided with a rotating shaft (3401), the left end of the rotating shaft (3401) is in transmission connection with the polishing transmission mechanism (32), and the right end of the rotating shaft (3401) is provided with a polishing disc (3402); the steel pipe clamping trolley (3302) is in transmission connection with the traction mechanism (35).
4. The production process of an ultra-high cleanliness stainless steel pipe according to claim 1, characterized in that: the inner wall cleaning of the sixteenth step is realized on the basis of a tool for scrubbing the inner wall of the stainless steel pipe, and the tool comprises a bracket (41), an air injection device (42) arranged on the left side of the bracket (41), and a collection device (43) arranged on the right side of the bracket (41); the gas injection device (42) comprises a cylinder (4201), a gas injection pipe (4202) arranged at the movable end of the cylinder (4201), and a buffer part (4203) arranged at the nozzle of the gas injection pipe (4202); the gas injection pipe (4202) is communicated with a high-pressure gas source (4205); the buffer part (4203) is provided with a plurality of air outlets (4204) side by side, and the distance between the centers of the adjacent air outlets (4204) is integral multiple of the diameter of the steel pipe (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110871259.3A CN113751961A (en) | 2021-07-30 | 2021-07-30 | Production process of stainless steel pipe with ultrahigh cleanliness |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110871259.3A CN113751961A (en) | 2021-07-30 | 2021-07-30 | Production process of stainless steel pipe with ultrahigh cleanliness |
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| CN113751961A true CN113751961A (en) | 2021-12-07 |
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| CN202110871259.3A Withdrawn CN113751961A (en) | 2021-07-30 | 2021-07-30 | Production process of stainless steel pipe with ultrahigh cleanliness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115365834A (en) * | 2022-10-24 | 2022-11-22 | 江苏武进不锈股份有限公司 | Ultra-high purity stainless steel pipe production line for semiconductor preparation device |
-
2021
- 2021-07-30 CN CN202110871259.3A patent/CN113751961A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115365834A (en) * | 2022-10-24 | 2022-11-22 | 江苏武进不锈股份有限公司 | Ultra-high purity stainless steel pipe production line for semiconductor preparation device |
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Application publication date: 20211207 |
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| WW01 | Invention patent application withdrawn after publication |