An improved seamless stainless steel pipe and production process

Abstract

The present invention discloses an improved seamless stainless steel pipe and production process, and relates to the related field of seamless stainless steel pipe. The present invention sprays a self-repairing coating on the surface of the steel pipe body, and the self-repairing coating is a self-repairing microcapsule epoxy resin coating. When the coating is damaged, the microcapsules rupture and release a repair agent for self-repair. The repair agent is epoxy resin. The coating can automatically repair after being damaged, thereby improving the service life and maintaining the integrity and protective performance of the coating. The surface cleaning of the steel pipe before the spraying process is completed by a cleaning treatment device, and the cleaning treatment device is built-in with a sweeping cleaning mechanism and a wiping mechanism. The sweeping cleaning mechanism is built-in with two sets of sweeping cleaning components with different speeds to clean the steel pipe efficiently and stably, and after cleaning, the wiping mechanism automatically absorbs water and wipes, thereby reducing manual operations and effectively improving the work efficiency of the steel pipe surface treatment.

Description

Technical Field

[0001] The invention relates to the field of seamless stainless steel pipes, and in particular to an improved seamless stainless steel pipe and a production process. Background Art

[0002] Seamless stainless steel pipe is a hollow round steel pipe made by hot rolling, cold rolling or cold drawing. It has high strength and corrosion resistance due to its no welds and no joints. During its manufacturing process, solid steel ingots or billets are perforated, rolled or drawn to form a smooth and uniform pipe wall. It is widely used in the petroleum, chemical, medical, food, machinery and other industries for transmitting fluids or manufacturing mechanical structures.

[0003] Chinese patent application number: CN201710798790.6 A method for manufacturing an improved ferritic seamless stainless steel pipe, comprising the following steps: material inspection, first pickling, grinding, rolling and drawing, degreasing, judging whether it is a finished product, and finished product processing. Through the above method, the manufacturing method of the improved ferritic seamless stainless steel pipe of the present invention and its manufacturing method solve the existing production problems, the surface quality has no cracks and cracks, etc., improves the yield rate and the overall surface quality of the product, saves energy and improves work efficiency, and at the same time improves toughness and elongation, improves mechanical properties, and has good comprehensive mechanical properties. The above patents and prior art have the following problems in actual use: the overall corrosion resistance and oxidation resistance of the processed stainless steel are relatively weak when dealing with certain harsh environments. If the surface is sprayed with a coating, the durability of the coating is relatively weak. Before spraying, manual assistance is required to clean the steel pipe, which is labor-intensive and affects work efficiency. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides an improved seamless stainless steel pipe and a production process.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an improved seamless stainless steel pipe and production process, including a steel pipe body and a self-repairing coating sprayed on the inside and outside of the steel pipe body, wherein the self-repairing coating is a self-repairing microcapsule epoxy resin coating.

[0006] Preferably, the specific steps are as follows:

[0007] S1 Billet preparation and perforation: Heat the stainless steel round bar and perforate the heated billet into a rough tube on the perforator;

[0008] S2 rough tube rolling: the rough tube is rolled into a rough seamless steel tube on the continuous rolling mill, and the outer diameter and wall thickness of the steel tube are adjusted;

[0009] S3 heat treatment: heating to solution temperature and then rapid cooling;

[0010] S4 pickling: remove surface oxide scale and impurities;

[0011] S5 Cold Working: Cold rolling improves dimensional accuracy and surface quality, and annealing is performed during the cold working process to eliminate work hardening;

[0012] S6 final treatment: correct the straightness of the steel pipe, cut the steel pipe into the required length, and conduct non-destructive testing and physical and chemical performance tests;

[0013] S7 Surface treatment preparation: The processed steel pipe body is introduced into the cleaning treatment device for surface cleaning, and then the surface is roughened by sandblasting or pickling to improve the adhesion of the coating;

[0014] S8 liquid spraying: Use a spray gun to evenly spray the self-repairing coating on the surface of the steel pipe, dry it naturally, and wait for the coating to solidify.

[0015] Preferably, the self-healing coating in S8 is a self-healing microcapsule epoxy resin coating, and the preparation steps are as follows:

[0016] A. Preparation of microcapsules: repair agent: epoxy resin, capsule wall material: phenolic resin, dissolve the repair agent in the oil phase, dissolve the capsule wall monomer in the water phase, mix the oil phase and the water phase to form an emulsion, perform polymerization at the oil / water interface to form a capsule wall, cover the repair agent, and finally form microcapsules;

[0017] B. Composition of coating: base material: epoxy resin, microcapsule: epoxy resin microcapsule, curing agent: polyamide, solvent: xylene, filler and additives: thickener, defoamer, mixed with each other, coating ratio: epoxy resin: 60-70%, curing agent: 20-30%, microcapsule: 5-10%, solvent: 5-10%, filler and additives: 2-5%.

[0018] Preferably, the cleaning processing device includes a base plate for support, a sweeping cleaning mechanism arranged at the left end of the top of the base plate, a fixed plate installed at the left end of the front end surface of the sweeping cleaning mechanism, a first motor arranged at the front end of the fixed plate, a base installed at the right end of the top of the base plate, a support for lifting the steel pipe arranged at the left end of the top of the base, and a wiping mechanism arranged at the right end of the top of the base.

[0019] Preferably, the sweeping cleaning mechanism includes a first support block fixed to the back of a fixed disk, a connecting shaft arranged inside the first support block and passing through the fixed disk to be connected to the output shaft of the first motor, a swing rod connected to the back of the connecting shaft, a first push rod hinged to the other end of the swing rod, a guide rod hinged to the back of a hinge position of the first push rod and the swing rod, a pull rod hinged to the lower end of the guide rod, a second support block hinged to the other end of the pull rod, a second push rod hinged to the upper end of the guide rod, a sliding rod hinged to the other end of the second push rod, an upper sliding rod matching the top of the sliding rod and hinged to the other end of the first push rod at the front end, a guide rail matching the bottom of the sliding rod, and two groups of surface cleaning mechanisms arranged on the back of the upper sliding rod and the back of the sliding rod, wherein the guide rail, the bottom of the first support block and the bottom of the second support block are all fixed to the base plate by a support arm.

[0020] Preferably, the surface cleaning mechanism includes a sweeping cylinder for sweeping the surface of the steel pipe, support arms provided at the front and rear ends of the sweeping cylinder for support, a water spray assembly installed on the right side of the sweeping cylinder, and a second motor provided at the rear end of the right side of the water spray assembly. The front end support arm is connected to the lower sliding rod and the upper sliding rod, and a guide frame is welded with the rear end of the top of the base plate, and the guide frame matches the rear end support arm.

[0021] Preferably, brushes are evenly arranged on the inner side of the sweeping cylinder.

[0022] Preferably, the water spray assembly includes a fixed shell arranged on the right side of the sweeping cylinder, a water inlet opened at the bottom of the fixed shell, a gear arranged at the rear end of the fixed shell and connected to the output shaft of the second motor, a gear ring meshing with the front end of the gear, and a water outlet net arranged on the inner side of the gear, a water outlet net is arranged on the inner side of the gear ring, a convex ring is arranged on the left side of the gear ring, and a circular groove matching the convex ring is opened in the fixed shell.

[0023] Preferably, the wiping mechanism includes a bracket arranged at the right end of the top of the bottom plate, a fixing ring fixed to the top of the bracket, and a contact mechanism installed on the inner side of the fixing ring.

[0024] Preferably, the contact mechanism comprises a support welded and fixed to the inner side of the fixing ring, the other end of the support is fixed to the circular ring, one end of the circular ring is provided with a motor box, a rotating gear is fixed to the right side of the motor box, the other end of the rotating gear is connected to a rotating member, a guide column is fixed to the outer side of the fixing ring, the rotating member is sleeved on the outer side of the guide column, the rotating member is connected to the rotating gear, and the outer side of the rotating member is hinged to the follower through a first connecting member, the other end of the follower is hinged to another group of rotating members through a second connecting member, and the circular connection is performed in sequence, and a water absorbing layer is fixed to the outer side of the follower;

[0025] A third motor is installed at the lower end of the motor box, and the top output shaft of the third motor is connected to a universal shaft, and the other end of the universal shaft passes through the motor box and is connected to a rotating gear.

[0026] Beneficial effects of the present invention: The present invention sprays a self-repairing coating on the surface of the steel pipe body, and the self-repairing coating is a self-repairing microcapsule epoxy resin coating. When the coating is damaged, the microcapsules rupture and release a repair agent to perform self-repair. The repair agent is epoxy resin. The coating can automatically repair itself after being damaged, thereby increasing the service life and maintaining the integrity and protective performance of the coating. The surface cleaning of the steel pipe before the spraying process is completed by a cleaning treatment device, and the cleaning treatment device is equipped with a sweeping cleaning mechanism and a wiping mechanism. The sweeping cleaning mechanism is equipped with two groups of sweeping cleaning components with different speeds to clean the steel pipe efficiently and stably. After cleaning, the wiping mechanism automatically absorbs water and wipes the steel pipe, thereby reducing manual operations and effectively improving the work efficiency of the steel pipe surface treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the cleaning treatment device of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the sweeping cleaning mechanism of the present invention;

[0030] Figure 4 It is a schematic diagram of the partial structure of the sweeping cleaning mechanism of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the surface cleaning mechanism of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the sweeping cylinder of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the water spray assembly of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the wiping mechanism of the present invention;

[0035] Fig. 9 It is a schematic diagram of the contact mechanism structure of the present invention;

[0036] Fig.10It is a schematic diagram of the internal structure of the motor box of the present invention. Among them: steel pipe body-1, self-repairing coating-2, cleaning treatment device, bottom plate-3, sweeping cleaning mechanism-4, fixed plate-4a, first motor-4b, base-5, bracket-6, wiping mechanism-7, first support block-41, connecting shaft-42, swing rod-43, first push rod-44, guide rod-45, pull rod-46, second support block-47, second push rod-48, slide rod-49, upper slide rod-410, guide rail-411, surface cleaning mechanism-a, sweeping cylinder-a1, support arm-a2, spray Water component-a3, second motor-a4, brush-a11, fixed shell-a31, water inlet-a32, gear-a33, ring gear-a34, water outlet net-a35, bracket-71, fixed ring-72, contact mechanism-73, support-731, ring-732, motor box-733, rotating gear-734, rotating part-735, first connecting part-736, follower-737, second connecting part-738, water absorption layer-739, third motor-7331, universal shaft-7332. DETAILED DESCRIPTION

[0037] In order to further explain the technical solution of the present invention, it is described in detail below through specific embodiments.

[0038] See also Figure 1 The present invention provides an improved seamless stainless steel pipe, including a steel pipe body 1, a self-repairing coating 2 is sprayed on the surface and inner side of the steel pipe body 1, and the self-repairing coating 2 is a self-repairing microcapsule epoxy resin coating. When the coating is damaged, the microcapsules rupture and release a repair agent for self-repair. The repair agent is epoxy resin. The coating can automatically repair itself after being damaged, thereby increasing its service life and maintaining the integrity and protective performance of the coating.

[0039] The present invention provides an improved production process of seamless stainless steel pipe, S1 pipe blank preparation and perforation: heating stainless steel round steel, heating temperature: 1200°C, perforating the heated steel blank into a rough pipe on a perforator; S2 rough pipe rolling: rolling the rough pipe into a rough seamless steel pipe on a continuous rolling mill, adjusting the outer diameter and wall thickness of the steel pipe; S3 heat treatment: heating to the solution temperature, temperature: 1040°C, holding time: 1.5h, and then rapid cooling; S4 pickling: removing the oxide scale and impurities on the surface, the pickling solution concentration: 25% hydrochloric acid solution, pickling time: 20min; S5 cold processing: cold Rolling improves dimensional accuracy and surface quality, annealing is performed during cold working, the intermediate annealing temperature is 900°C, and work hardening is eliminated; S6 final treatment: correct the straightness of the steel pipe, cut the steel pipe into the required length, and conduct non-destructive testing and physical and chemical performance tests; S7 surface treatment preparation: introduce the processed steel pipe body into the cleaning treatment device for surface cleaning, and then roughen the surface by sandblasting or pickling to improve the adhesion of the coating; S8 liquid spraying: use a spray gun to evenly spray the self-repairing coating on the surface of the steel pipe, dry it naturally, and wait for the coating to solidify. The liquid spraying pressure is 3 bar, the self-healing coating is a self-healing microcapsule epoxy resin coating, and the preparation steps are as follows: A. Preparation of microcapsules: repairing agent: epoxy resin, capsule wall material: phenolic resin, dissolving the repairing agent in the oil phase, dissolving the capsule wall monomer in the water phase, mixing the oil phase and the water phase to form an emulsion, performing polymerization reaction at the oil / water interface to form a capsule wall, coating the repairing agent, and finally forming microcapsules; B. Composition of the coating: matrix material: epoxy resin, microcapsules: epoxy resin microcapsules, curing agent: polyamide, solvent: xylene, fillers and additives: thickener, defoamer, mixed with each other, coating ratio: epoxy resin: 60-70%, curing agent: 20-30%, microcapsules: 5-10%, solvent: 5-10%, fillers and additives: 2-5%.

[0040] See also Figure 2 The cleaning device includes a bottom plate 3 for support, a sweeping cleaning mechanism 4 is installed at the left end of the top of the bottom plate 3, and the sweeping cleaning mechanism 4 can sweep and spray water on the passing steel pipe to clean its surface, and the bottom of the sweeping cleaning mechanism 4 can be fixed to the bottom plate 3 through a supporting arm, a fixed disk 4a is installed at the left end of the front end surface of the sweeping cleaning mechanism 4, a first motor 4b is arranged at the front end of the fixed disk 4a, and the output shaft of the first motor 4b passes through the fixed disk 4a to connect with the sweeping cleaning mechanism 4, a base 5 is arranged at the right end of the top of the bottom plate 3, a support 6 for lifting the steel pipe is installed at the left end of the top of the base 5, and four groups of wiping mechanisms 7 are arranged at the right end of the top of the base 5, and the wiping mechanism 7 can wipe the surface of the steel pipe after the surface cleaning.

[0041] See also Figure 3-Figure 7The sweeping cleaning mechanism 4 includes a first support block 41 for support, a connecting shaft 42 is arranged in the middle of the first support block 41, and the front end is fixed to the fixed plate 4a, the back of the connecting shaft 42 is connected to the swing rod 43, the front end of the connecting shaft 4 is connected to the output shaft of the first motor 4b, the other end of the swing rod 43 is hinged to the first push rod 44, and the back of the hinge position of the two is hinged with a guide rod 45, the lower end of the guide rod 45 is hinged to the pull rod 46, and the other end of the pull rod 46 is hinged to the back of the second support block 47, The upper end of the back side of the guide rod 45 is hinged to the second push rod 48, and the lower end of the second push rod 48 is hinged to a lower slide rod 49, and a groove is provided in the middle of the lower slide rod 49, and an upper slide rod 410 is movably embedded in the groove. The left end of the front end of the upper slide rod 410 is hinged to the other end of the first push rod 44, and the bottom of the lower slide rod 49 matches the guide rail 411, and the lower slide rod 49 can slide along the guide rail 411. The guide rail 411, the first support block 41, and the bottom of the second support block 47 are all fixed to the bottom plate through the support arm;

[0042] The middle part of the back of the upper slide bar 410 and the right end of the back of the lower slide bar 49 are both provided with a surface cleaning mechanism a, which can clean the surface of the steel pipe passing through;

[0043] The surface cleaning mechanism a comprises a sweeping cylinder a1 for sweeping the steel pipe, and arms a2 are welded and fixed at the front and rear ends of the sweeping cylinder a1, and the front end arm a2 is connected to the lower slide bar 49 and the upper slide bar 410, and a guide frame is welded at the rear end of the top of the bottom plate 3, and the guide frame matches the rear end arm a2, and the arm a2 can slide on the guide frame, and a water spray assembly a3 is arranged on the right side of the sweeping cylinder a1, and the water spray assembly a3 is communicated with the sweeping cylinder a1;

[0044] Brushes a11 are evenly arranged on the inner side of the sweeping cylinder a1;

[0045] The water spray assembly a3 includes a fixed shell a31 fixed to the right side of the sweeping tube a1, a water inlet a32 is provided at the bottom of the fixed shell a31, and the water inlet a32 can be connected to an external water pipe. A gear a33 is provided at the rear end of the fixed shell a31, the middle part of the gear a33 is connected to the output shaft of the second motor a4, the front end of the gear a33 is meshed with the gear ring a34, a water outlet net a35 is provided on the inner side of the gear ring a34, a convex ring is provided on the left side of the gear ring a34, a circular groove matching the convex ring is provided in the fixed shell a31, and the convex ring can be movably embedded in the circular groove for sliding.

[0046] See also Figure 8-Figure 10 The wiping mechanism 7 includes a support bracket 71, the bottom of the bracket 71 is fixed to the bottom plate 3, a fixing ring 72 is welded and fixed to the top of the bracket 71, and a contact mechanism 73 is arranged inside the fixing ring 72;

[0047] The contact mechanism 73 includes a support 731 welded and fixed to the inner side of the fixed ring 72, the other end of the support 731 is fixed to the circular ring 732, one end of the circular ring 732 is provided with a motor box 733, a rotating gear 734 is fixed to the right side of the motor box 733, the other end of the rotating gear 734 is connected to a rotating member 735, eight groups of guide columns are fixed to the outer side of the fixed ring 72, and eight groups of rotating members 735 are provided, and the eight groups of rotating members 735 are sleeved on the outer side of the guide columns, one group of rotating members 735 is connected to the rotating gear 734, the outer side of the rotating member 735 is hinged to the follower 737 through the first connecting member 736, and the other end of the follower 737 is hinged to another group of rotating members 735 through the second connecting member 738, and the circular connection is performed in sequence, and a water absorbing layer 739 that can wipe and absorb water from the steel pipe is fixed to the outer side of the follower 737;

[0048] A third motor 7331 is installed at the lower end of the motor box 733, and the output shaft at the top of the third motor 7331 is connected to

[0049] The universal shaft 7332 has the other end passing through the motor box 733 and connected to the rotating gear 734 .

[0050] The specific implementation process of the cleaning treatment device is as follows:

[0051] The steel pipe needs to pass through the sweeping cylinder a1, the fixed shell a31 and the middle of the ring 732, and then the surface cleaning work can begin;

[0052] When the steel pipe passes through the sweeping cylinder a1, the first motor 4b is started to work, the first motor 4b drives the connecting shaft 42 to rotate, the connecting shaft 42 drives the swing rod 43 to rotate, the swing rod 43 acts on the guide rod 45, and cooperates with the pull rod 46 to push the first push rod 44 and the second push rod 48, so that

[0053] The lower slide bar 49 slides on the guide rail 411, and the upper slide bar 410 slides on the lower slide bar 49, so that the two sets of surface cleaning mechanisms a start to move at different speeds outside the steel pipe, and the brush a11 inside the sweeping cylinder a1 inside the surface cleaning mechanism a can scrape the surface of the steel pipe, and then the water injected from the water injection port a32 can cooperate with the second motor a4 to start, drive the gear a33 to make the gear ring a34 rotate, and the water is evenly sprayed on the surface of the steel pipe through the rotating water outlet net a35, so as to perform stable and efficient surface cleaning;

[0054] After the surface of the steel pipe is cleaned, the third motor 7331 is started, and the output shaft of the third motor 7331 drives the universal shaft 7332 to rotate the rotating gear 734, and the rotating gear 734 can drive a group of rotating parts 735 to cooperate with the connecting parts to drive other rotating parts to rotate synchronously. During the rotation, the water-absorbing layer on the outside of the follower 737 can rotate to wipe the surface of the steel pipe and absorb water. The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved seamless stainless steel pipe production process, characterized in that: The specific steps are as follows: S1 Billet preparation and perforation: Heat the stainless steel round bar and perforate the heated billet into a rough tube on the perforator; S2 rough tube rolling: the rough tube is rolled into a rough seamless steel tube on the continuous rolling mill, and the outer diameter and wall thickness of the steel tube are adjusted; S3 heat treatment: heating to solution temperature and then rapid cooling; S4 pickling: remove surface oxide scale and impurities; S5 Cold Working: Cold rolling improves dimensional accuracy and surface quality, and annealing is performed during the cold working process to eliminate work hardening; S6 final treatment: correct the straightness of the steel pipe, cut the steel pipe into the required length, and conduct non-destructive testing and physical and chemical performance tests; S7 Surface treatment preparation: The processed steel pipe body is introduced into the cleaning treatment device for surface cleaning, and then the surface is roughened by sandblasting or pickling to improve the adhesion of the coating; S8 liquid spraying: Use a spray gun to evenly spray the self-repairing coating on the surface of the steel pipe, dry it naturally, and wait for the coating to solidify; The cleaning device includes a bottom plate for supporting, a sweeping cleaning mechanism disposed at the left end of the top of the bottom plate, a fixed plate installed at the left end of the front end of the sweeping cleaning mechanism, a first motor disposed at the front end of the fixed plate, a base mounted at the right end of the top of the bottom plate, a support for lifting the steel pipe disposed at the left end of the top of the base, and a wiping mechanism disposed at the right end of the top of the base; The sweeping cleaning mechanism includes a first support block fixed to the back of a fixed disk, a connecting shaft arranged inside the first support block and passing through the fixed disk to connect to the output shaft of the first motor, a swing rod connected to the back of the connecting shaft, a first push rod hinged to the other end of the swing rod, a guide rod hinged to the back of a hinged position of the first push rod and the swing rod, a pull rod hinged to the lower end of the guide rod, a second support block hinged to the other end of the pull rod, a second push rod hinged to the upper end of the guide rod, a lower slide rod hinged to the other end of the second push rod, an upper slide rod matched with the top of the lower slide rod and hinged to the other end of the first push rod at the front end, a guide rail matched with the bottom of the lower slide rod, and two sets of surface cleaning mechanisms arranged on the back of the upper slide rod and the back of the lower slide rod, wherein the guide rail, the bottom of the first support block and the bottom of the second support block are all fixed to the bottom plate by a support arm; The surface cleaning mechanism includes a sweeping cylinder for sweeping the surface of the steel pipe, support arms arranged at the front and rear ends of the sweeping cylinder for support, a water spray assembly installed on the right side of the sweeping cylinder, and a second motor arranged at the rear end of the right side of the water spray assembly. The front end support arm is connected to the lower sliding rod and the upper sliding rod, and a guide frame is welded to the rear end of the top of the bottom plate, and the guide frame matches the rear end support arm.

2. The improved seamless stainless steel pipe production process according to claim 1, characterized in that: The self-healing coating described in S8 is a self-healing microcapsule epoxy resin coating, and the preparation steps are as follows: A. Preparation of microcapsules: repair agent: epoxy resin, capsule wall material: phenolic resin, dissolve the repair agent in the oil phase, dissolve the capsule wall monomer in the water phase, mix the oil phase and the water phase to form an emulsion, perform polymerization at the oil / water interface to form a capsule wall, cover the repair agent, and finally form microcapsules; B. Composition of coating: base material: epoxy resin, microcapsule: epoxy resin microcapsule, curing agent: polyamide, solvent: xylene, filler and additives: thickener, defoamer, mixed with each other, coating ratio: epoxy resin: 60-70%, curing agent: 20-30%, microcapsule: 5-10%, solvent: 5-10%, filler and additives: 2-5%.

3. The improved seamless stainless steel pipe production process according to claim 1 is characterized in that: Brushes are evenly arranged on the inner side of the sweeping cylinder.

4. The improved seamless stainless steel pipe production process according to claim 1 is characterized in that: The water spray assembly includes a fixed shell arranged on the right side of the sweeping cylinder, a water inlet opened at the bottom of the fixed shell, a gear arranged at the rear end of the fixed shell and connected to the output shaft of the second motor, a gear ring meshing with the front end of the gear, and a water outlet net arranged on the inner side of the gear, a water outlet net is arranged on the inner side of the gear ring, a convex ring is arranged on the left side of the gear ring, and a circular groove matching the convex ring is opened in the fixed shell.

5. The improved seamless stainless steel pipe production process according to claim 1 is characterized in that: The wiping mechanism comprises a bracket arranged at the right end of the top of the bottom plate, a fixing ring fixed on the top of the bracket, and a contact mechanism installed on the inner side of the fixing ring.

6. The improved seamless stainless steel pipe production process according to claim 5, characterized in that: The contact mechanism includes a support that is welded and fixed to the inner side of a fixed ring, the other end of the support is fixed to a circular ring, one end of the circular ring is provided with a motor box, a rotating gear is fixed to the right side of the motor box, the other end of the rotating gear is connected to a rotating member, a guide column is fixed to the outer side of the fixed ring, the rotating member is sleeved on the outer side of the guide column, the rotating member is connected to the rotating gear, and the outer side of the rotating member is hinged to the follower through a first connecting member, the other end of the follower is hinged to another group of rotating members through a second connecting member, and the circular connection is performed in sequence, and a water-absorbing layer is fixed to the outer side of the follower; a third motor is installed at the lower end of the motor box, the top output shaft of the third motor is connected to a universal shaft, and the other end of the universal shaft passes through the motor box and is connected to the rotating gear.

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