CN111945090A - Production process and device of galvanized welded steel pipe - Google Patents
Production process and device of galvanized welded steel pipe Download PDFInfo
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- CN111945090A CN111945090A CN202010654285.6A CN202010654285A CN111945090A CN 111945090 A CN111945090 A CN 111945090A CN 202010654285 A CN202010654285 A CN 202010654285A CN 111945090 A CN111945090 A CN 111945090A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/38—Wires; Tubes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to the technical field of galvanized steel pipe production, in particular to a production process and a device of a galvanized welded steel pipe, which comprises the following steps: horizontally suspending, namely horizontally suspending the rigid pipe on a rotary hanger; step two: pickling, namely placing the hanger in a pickling tank through a hanging machine; step three: removing acid liquor, suspending the top of the pickling tank by a rotary crane through the crane, and starting the rotary hanger to enable the steel pipe to rotate in the aeration water tank; step four: dewatering, namely suspending the rotary hanger on the top of the aeration water tank through a suspension crane, and starting the rotary hanger to enable residual water on the surface of the steel pipe to fall into the aeration water tank so as to avoid the residual water from diluting the galvanizing liquid; galvanizing, namely placing the rotary hanger in a hot galvanizing pool through a suspension frame; removing zinc liquid, and starting a zinc film remover; the galvanized steel pipe manufactured by the process has high quality and high automation degree.
Description
Technical Field
The invention relates to the technical field of galvanized steel pipe production, in particular to a production process and a device of a galvanized welded steel pipe.
Background
Galvanization refers to a surface treatment technology for plating a layer of zinc on the surface of metal, alloy or other materials to play the roles of beauty, rust prevention and the like. The main method is hot galvanizing, and zinc is easily dissolved in acid and alkali, so that the zinc is called amphoteric metal. The zinc hardly changes in the dry air. In humid air, a dense film of basic zinc carbonate is formed on the zinc surface. In the atmosphere containing sulfur dioxide, hydrogen sulfide and oceanic atmosphere, the corrosion resistance of zinc is poor, and particularly in the atmosphere containing high-temperature high-humidity organic acid, a zinc coating is extremely easy to corrode. For the steel matrix, the zinc coating belongs to an anodic coating, which is mainly used for preventing the corrosion of steel, and the relation between the quality of the protective performance and the coating thickness is very large. After the zinc coating is passivated, dyed or coated with a light-protecting agent, the protective property and the decorative property of the zinc coating can be obviously improved.
Chinese patent CN202010212258.3 discloses a galvanized steel pipe manufacturing process, which adopts a galvanized steel pipe manufacturing hanger, wherein the galvanized steel pipe manufacturing hanger comprises a hoisting plate, an adjusting support plate, an adjusting mechanism, a shaking mechanism, a locking connecting plate, a telescopic plate, a locking mechanism, a telescopic sliding column and a blocking block; the process for manufacturing the galvanized steel pipe by adopting the galvanized steel pipe manufacturing hanger comprises the following steps: s1, steel pipe zinc plating pretreatment; s2, locking the steel pipe; s3, connecting a hoisting plate; s4, galvanizing the steel pipe; and S5, shaking the steel pipe.
The manufacturing process is complicated in suspension through the hanger, and a zinc film is formed on the surface of a galvanizing pool after galvanizing is finished, and the zinc film cannot be removed by shaking the steel pipe.
Disclosure of Invention
In order to solve the technical problems, the technical scheme solves the problems that a hanger is complicated to suspend a steel pipe and a zinc film is formed on the surface of a galvanizing bath.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a production process of a galvanized welded steel pipe comprises the following steps,
the method comprises the following steps: horizontally suspending, namely horizontally suspending the rigid pipe on a rotary hanger, and fixedly connecting two sides of the top end of the hanger through a suspension crane;
step two: pickling, namely placing the hanger in a pickling tank through a hanging machine until pickling solution completely submerges the steel pipe, closing a protective cover on the pickling tank, and standing the steel pipe in the pickling tank for a period of time to remove an oxide layer on the surface of the steel pipe, so that galvanizing is facilitated;
step three: removing acid liquor, suspending the top of a pickling tank by a rotary crane through the crane, starting a rotary hanger to enable the surface of the steel pipe to be remained in the acid liquor to fall into the pickling tank, placing the rotary hanger in an aeration water tank through the crane, and starting the rotary hanger to enable the steel pipe to rotate in the aeration water tank, so that the acid liquor on the surface of the steel pipe is cleaned, and the residual acid liquor is prevented from reacting with a zinc plating solution;
step four: dewatering, namely suspending the rotary hanger on the top of the aeration water tank through a suspension crane, and starting the rotary hanger to enable residual water on the surface of the steel pipe to fall into the aeration water tank so as to avoid the residual water from diluting the galvanizing liquid;
step five: galvanizing, namely placing the rotary hanger in a hot galvanizing pool through a suspension bracket until pickling solution completely submerges the steel pipe, closing a protective cover on the hot galvanizing pool, and standing the steel pipe in the hot galvanizing pool for a period of time;
step six: remove the zinc liquid, start zinc membrane and dial the ware for hot zinc liquid surface zinc membrane is dialled to one side, prevents that the zinc membrane from covering difficult the getting rid of on the steel pipe, opens the protection casing again, starts the crane with rotation gallows suspension hot galvanizing bath top, starts the rotation gallows, makes the steel pipe surface remain and falls to hot galvanizing bath in the zinc liquid, places the appointed place through the galvanized steel pipe after the crane will cool off.
Preferably, the swing type suspension bracket comprises: two sides of the top end of the main suspension rod are fixedly connected with the working end of the suspension machine through a lifting rope; the horizontal projection of the tripod is overlapped on two sides of the bottom end of the main suspension rod; the rotating columns are arranged on two sides of the bottom end of the tripod in a rotating mode along the axial direction of the main suspension rod; the clamping type rotating disc is coaxially and fixedly arranged at the inner end of the rotating column; the two ends of the suspension shaft are coaxially provided with clamping columns, and in a working state, the suspension shaft coaxially penetrates through the steel pipe and the clamping columns are clamped with the outer circumferential surface of the clamping type rotating disc; the driving piece is arranged on two sides of the bottom end of the main suspension rod, and an output shaft of the driving piece is coaxially and fixedly connected with the outer end of the rotating column.
Preferably, the click type rotary disk includes: the rotating disc is coaxially and rotatably arranged on two sides of the bottom end of the tripod through the rotating column; a clamping groove convenient for clamping the clamping column is formed in the outer circumferential surface of the rotating disc; one end of the dart-shaped rotating claw is rotatably arranged outside the clamping groove through a rotating screw, a concave part of the dart-shaped rotating claw is abutted against the circumferential surface of the clamping column in a working state, and a first fixing groove and a second fixing groove along the radial direction of the rotating disc are respectively arranged at the two ends of the outer side of the dart-shaped rotating claw; the bolt is hinged to the outer circumferential surface of the rotating disc, and in a working state, the bolt is fixedly connected with the fixing groove.
Preferably, the dart-shaped rotating claw is also provided with a waist-shaped opening coaxial with the rotating screw; the rotating disc is also provided with a limit screw which is in sliding fit with the waist-shaped opening.
Preferably, the driving member comprises: the servo motor is arranged on the inner side of the top end of the tripod; the servo motor output shaft is in synchronous transmission connection with the outer ends of the rotating columns on the two sides of the bottom through the transmission mechanism.
Preferably, the clamping column comprises: the suspension shaft comprises a first limiting column, a second limiting column and a third limiting column, wherein the limiting columns are sequentially and coaxially arranged at two ends of the suspension shaft, the diameters of the first limiting column and the third limiting column are larger than the groove diameter of the clamping groove, and the diameter of the second limiting column is smaller than the groove diameter of the clamping groove.
Preferably, the suspension shaft is a square shaft and has a diameter smaller than the inner diameter of the steel pipe.
Preferably, the shield comprises: the arc partition plates are rotatably arranged on two sides of the pickling tank and the hot galvanizing tank; the two ends of the first connecting rod are respectively hinged with the eccentric shaft end at the outer end of the arc partition plate and one end of the second connecting rod; and the working end of the lifter is vertically upwards hinged with the other end of the second connecting rod.
Preferably, the zinc membrane extractor comprises: the synchronous belt sliding tables are fixedly arranged on two sides of the pickling tank and the galvanizing tank; the triangular fixing frame is vertically arranged at the top of the movable working end of the triangular fixing frame along the radial direction of the clamping type rotating disc; one end of the shifting plate is provided with a fixed column along the vertical direction, a limiting ring is further arranged on the top of the fixed column, and the shifting plate is rotatably arranged on the triangular fixed frame through the fixed column and is in the radial direction of the clamping type rotating disc; the clamping type rotating disc comprises a first torsion spring and a first torsion spring, wherein the torsion spring is coaxially sleeved on a fixed column, two ends of the torsion spring are respectively welded with the upper end and the lower end of a shifting plate and a triangular fixing frame, and the shifting plate and the clamping type rotating disc are in the same radial direction in the working state.
Preferably, fixing lugs convenient for being fixedly suspended with the lifting rope are further arranged on two sides of the top end of the main suspension rod.
Compared with the prior art, the invention has the beneficial effects that:
1. the process can suspend a plurality of steel pipes through the rotary type hanger, is convenient to operate, and particularly, the suspension shaft coaxially penetrates through the steel pipes to enable the first synchronous chain transmission mechanism to be connected in the clamping groove, the dart-shaped rotary claw is rotated to enable the dart-shaped rotary claw to be abutted against the circumferential surface of the second synchronous chain transmission mechanism, and then the first square wing butterfly screw and the second square wing butterfly screw are respectively fixed in the first fixing groove and the second fixing groove, namely, the steel pipe is horizontally suspended on the rotary type hanger, and the fixing lugs are fixedly connected through the hanging ropes through the hanging machine, so that the processing is convenient to be sequentially carried out;
2. the process can prepare the galvanized steel pipe with excellent quality by sequentially carrying out acid pickling, acid solution removing, water removing and galvanizing, specifically, the acid pickling is carried out, the hanger is placed in the pickling tank by the hanging machine, until the pickling solution completely submerges the steel pipe, the elevator is started to enable the arc partition plate on the pickling tank to close the pickling tank, the acid solution is prevented from splashing, the steel pipe is kept stand in the pickling tank for a period of time, so that the oxide layer on the surface of the steel pipe is removed, and the galvanizing is facilitated; removing acid liquor, namely suspending the top of a pickling tank by a rotary crane through the crane, starting a servo motor, driving a rotating column to rotate on a tripod by an output shaft of the servo motor through a first synchronous chain transmission mechanism and a second synchronous chain transmission mechanism, driving a steel pipe to correspond to a main suspension rod by a clamping type rotating disc, enabling the surface of the steel pipe to be remained in the acid liquor to fall into the pickling tank, placing a rotary hanger in an aeration water tank through the crane, starting the rotary hanger again, enabling the steel pipe to rotate in the aeration water tank, and thus cleaning the surface of the steel pipe to prevent the residual acid liquor from reacting with zinc plating liquor; dewatering, namely suspending the rotary hanger on the top of the aeration water tank through a suspension crane, and starting the rotary hanger to enable residual water on the surface of the steel pipe to fall into the aeration water tank so as to avoid the residual water from diluting the galvanizing liquid; galvanizing, namely placing the rotary hanger in a hot galvanizing pool through a suspension bracket, designating that pickling solution completely submerges a steel pipe, closing a protective cover on the hot galvanizing pool, and standing the steel pipe in the hot galvanizing pool for a period of time;
3. this technology can dial out galvanizing bath surface zinc membrane through zinc membrane extractor, prevent that the zinc membrane from covering on the steel pipe surface, thereby be convenient for steel pipe surface zinc layer cooling, specifically, remove the zinc liquid, start zinc membrane extractor, make hot zinc liquid surface zinc membrane be dialled to one side, prevent that the zinc membrane from covering difficult the getting rid of on the steel pipe, open the protection casing again, start the crane with rotation gallows suspension hot galvanizing bath top, start the rotation gallows, make the steel pipe surface remain in the zinc liquid falls to galvanizing bath, place appointed place through the galvanized steel pipe after the crane will cool off.
Drawings
FIG. 1 is a partial perspective view of the present invention;
FIG. 2 is a perspective view of the rotary hanger of the present invention;
FIG. 3 is a bottom view of the rotary hanger of the present invention;
FIG. 4 is a perspective view of the turntable of the present invention during clamping;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a perspective view of the driving member of the present invention;
FIG. 7 is a top view of the hanger shaft and snap post of the present invention;
FIG. 8 is a cross-sectional view at section B-B of FIG. 7;
FIG. 9 is a partial perspective view of the shield of the present invention;
fig. 10 is a partial enlarged view of fig. 9 at C.
Description of reference numerals:
1-a main suspension rod; 1 a-a fixing lug;
2-a tripod;
3-rotating the column;
4-a bayonet rotating disc; 4 a-rotating disc; 4a 1-snap groove; 4 b-dart-shaped rotating claw; 4b1 — first fixation slot; 4b2 — second fixation slot; 4b 3-waist-shaped mouth; 4 c-rotating the screw; 4 d-first wing thumb screw; 4 e-a second square wing thumb screw; 4 f-a limit screw;
5-a suspension shaft;
6-clamping the column; 6 a-a first limit post; 6 b-a second limit post; 6 c-a third limit post;
7-a drive member; 7 a-a servo motor; 7 b-a first synchronous chain drive; 7 c-a second synchronous chain drive;
8-a protective cover; 8 a-arc partition plate; 8 b-a first link; 8 c-a second link; 8 d-a lifter;
9-zinc film remover; 9 a-a synchronous belt sliding table; 9 b-a triangular fixing frame; 9 c-a dial plate; 9c 1-fixed posts; 9c 2-stop collar; 9 d-a first torsion spring; 9 e-second torsion spring.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Referring to fig. 1, a process for producing a galvanized welded steel pipe includes the steps of,
the method comprises the following steps: horizontally suspending, namely horizontally suspending the rigid pipe on a rotary hanger, and fixedly connecting two sides of the top end of the hanger through a suspension crane;
step two: pickling, namely placing the hanger in a pickling tank through a hanging machine until pickling solution completely submerges the steel pipe, closing a protective cover 8 on the pickling tank, and standing the steel pipe in the pickling tank for a period of time to remove an oxide layer on the surface of the steel pipe, so that galvanizing is facilitated;
step three: removing acid liquor, suspending the top of a pickling tank by a rotary crane through the crane, starting a rotary hanger to enable the surface of the steel pipe to be remained in the acid liquor to fall into the pickling tank, placing the rotary hanger in an aeration water tank through the crane, and starting the rotary hanger to enable the steel pipe to rotate in the aeration water tank, so that the acid liquor on the surface of the steel pipe is cleaned, and the residual acid liquor is prevented from reacting with a zinc plating solution;
step four: dewatering, namely suspending the rotary hanger on the top of the aeration water tank through a suspension crane, and starting the rotary hanger to enable residual water on the surface of the steel pipe to fall into the aeration water tank so as to avoid the residual water from diluting the galvanizing liquid;
step five: galvanizing, namely placing the rotary hanger in a hot galvanizing pool through a suspension bracket until pickling solution completely submerges the steel pipe, closing a protective cover 8 on the hot galvanizing pool, and standing the steel pipe in the hot galvanizing pool for a period of time;
step six: remove the zinc liquid, start zinc film and dial ware 9 for hot zinc liquid surface zinc film is dialled to one side, prevents that the zinc film from covering difficult getting rid of on the steel pipe, opens protection casing 8 again, starts the loop wheel machine with rotation gallows suspension hot galvanizing bath top, starts the rotation gallows, makes the steel pipe surface remain and falls to hot galvanizing bath in the zinc liquid, places the appointed place through the galvanized steel pipe after the loop wheel machine will cool off.
The rotary suspension frame comprises: two sides of the top end of the main suspension rod 1 are fixedly connected with the working end of the suspension machine through a lifting rope; the triangular supports 2 are arranged on two sides of the bottom end of the main suspension rod 1 in a horizontal projection overlapping mode; the rotating columns 3 are arranged on two sides of the bottom end of the tripod 2 in a rotating mode along the axial direction of the main suspension rod 1; the clamping type rotating disc 4 is coaxially and fixedly arranged at the inner end of the rotating column 3; the two ends of the suspension shaft 5 are coaxially provided with clamping columns 6, and in a working state, the suspension shaft 5 coaxially penetrates through the steel pipe and the clamping columns 6 are clamped with the outer circumferential surface of the clamping type rotating disc 4; the driving piece 7 is arranged on two sides of the bottom end of the main suspension rod 1, and an output shaft of the driving piece is coaxially and fixedly connected with the outer end of the rotating column 3.
When the steel pipes are suspended, the suspension shaft 5 coaxially penetrates through the steel pipes, the clamping columns 6 are clamped on the outer circumferential surface of the clamping type rotating disc 4, so that a plurality of steel pipes are sequentially arranged on the outer circumferential surface of the clamping type rotating disc 4 along the axial direction, the working part of the suspension machine is fixedly connected with two sides of the top end of the main suspension rod 1 through the suspension ropes, and then the clamping type rotating disc 4 suspender provided with the steel pipes is used for driving the clamping type rotating disc 4 to synchronously rotate relative to the main suspension rod 1 through the starting driving piece 7, so that a plurality of steel pipes rotate along the axial direction of the clamping type rotating disc 4, and therefore deacidification, dehydration and dezincification are facilitated, and continuous processing is facilitated.
As shown in fig. 4 and 5, the snap-in type rotary disk 4 includes: the rotating disc 4a is coaxially and rotatably arranged at two sides of the bottom end of the tripod 2 through the rotating column 3; a clamping groove 4a1 convenient for clamping of the clamping column 6 is formed in the outer circumferential surface of the rotating disc 4 a; a dart-shaped rotating claw 4b, one end of which is rotatably arranged outside the clamping groove 4a1 through a rotating screw 4c, wherein, in the working state, the concave part of the dart-shaped rotating claw 4b is abutted against the circumferential surface of the clamping column 6, and the two ends outside the dart-shaped rotating claw 4b are respectively provided with a first fixing groove 4b1 and a second fixing groove 4b2 along the radial direction of the rotating disc 4 a; the first wing butterfly screw 4d and the second wing butterfly screw 4e are hinged to the outer circumferential surface of the rotating disc 4a, and in a working state, the screws are fixedly connected with the fixing grooves.
When the steel pipe needs to be suspended on the hanger, the suspension shaft 5 coaxially penetrates through the steel pipe, the clamping columns 6 at two ends of the suspension shaft 5 are clamped in the clamping grooves 4a1, the dart-shaped rotary claw 4b is rotated by the rotary screw 4c, so that the concave part of the dart-shaped rotary claw 4b abuts against the circumferential surface of the clamping column 6, the clamping column 6 cannot be separated from the rotary disk 4a, the first fixing groove 4b1 and the second fixing groove 4b2 are fixed by the first wing butterfly screw 4d and the second wing butterfly screw 4e, the dart-shaped rotary claw 4b cannot rotate relative to the rotary disk 4a, the clamping column 6 is completely clamped in the clamping groove 4a1, and when the rotary disk 4a is rotated, the steel pipe can rotate along the outer axis of the rotary disk 4a, and deacidification, dehydration and dezincification are facilitated.
As shown in fig. 5, the dart-shaped rotating claw 4b is further provided with a waist-shaped opening 4b3 coaxial with the rotating screw 4 c; the rotating disc 4a is also provided with a limit screw 4f which is in sliding fit with the waist-shaped opening 4b 3.
Dart-shaped rotating claw 4b is provided with waist-shaped opening 4b3, and stop screw 4f and first fixed slot 4b1 sliding fit to make dart-shaped rotating claw 4b use rotating screw 4c as the axis when rotating, the structure is more stable, prevents to make dart-shaped rotating claw 4b break away from rotary disk 4a naturally because of receiving the exogenic action.
As shown in fig. 6, the driving member 7 includes: a servo motor 7a arranged at the inner side of the top end of the tripod 2; the servo motor 7a is connected with the outer ends of the rotating columns 3 at the two sides of the bottom in a synchronous transmission mode through the transmission mechanism.
The servo motor 7a is started, so that the output shaft of the servo motor 7a drives the rotating columns 3 on the two sides of the bottom end of the rotating column 3 to synchronously rotate through the first synchronous chain transmission mechanism 7b and the second synchronous chain transmission mechanism 7c, the clamping type rotating disc 4 can synchronously rotate, and deacidification, dehydration and dezincification are facilitated.
As shown in fig. 7, the latch post 6 includes: the suspension shaft comprises a first limiting column 6a, a second limiting column 6b and a third limiting column 6c, wherein the limiting columns are sequentially and coaxially arranged at two ends of the suspension shaft 5, the diameters of the first limiting column 6a and the third limiting column 6c are larger than the groove diameter of the clamping groove 4a1, and the diameter of the second limiting column 6b is smaller than the groove diameter of the clamping groove 4a 1.
The diameters of the first limiting column 6a and the third limiting column 6c are larger than the groove diameter of the clamping groove 4a1, and the diameter of the second limiting column 6b is smaller than the groove diameter of the clamping groove 4a1, so that when the second limiting column 6b is clamped in the clamping groove 4a1, the clamping column 6 cannot move along the axial direction, the steel pipe can be stably hung on the shaft 5, and the zinc plating is facilitated.
As shown in fig. 8, the suspension shaft 5 is a square shaft and has a diameter smaller than the inner diameter of the steel pipe.
The suspension shaft 5 is a square shaft, the diameter of the suspension shaft is smaller than the inner diameter of the steel pipe, so that when the suspension shaft 5 can penetrate through the steel pipe, two sides of the square shaft can be abutted against the inner wall of the steel pipe, the contact area between the suspension shaft 5 and the steel pipe is reduced, and the inside of the steel pipe can be uniformly galvanized.
As shown in fig. 9, the protection cover 8 includes: the arc partition plates 8a are rotatably arranged on two sides of the pickling tank and the hot galvanizing tank; the two ends of the first connecting rod 8b are respectively hinged with the eccentric end of the outer end of the arc partition plate 8a and one end of the second connecting rod 8 c; and the working end of the lifter 8d is vertically upwards hinged with the other end of the second connecting rod 8 c.
The lifter 8d is started, the output shaft of the lifter can drive the second connecting rod 8c to move together with the lifter 8d, so that the circular arc partition plates 8a can move on two sides of the pickling tank or the hot galvanizing tank through the action of the connecting rods, the top of the pickling tank or the hot galvanizing tank is closed, and the phenomenon that workers are accidentally injured by splashing of acid liquor and zinc liquor during pickling or galvanizing is prevented.
As shown in fig. 10, the zinc membrane remover 9 includes: the synchronous belt sliding tables 9a are fixedly arranged on two sides of the pickling tank and the galvanizing tank; the triangular fixed frame 9b is vertically arranged at the top of the movable working end of the triangular fixed frame 9b along the radial direction of the clamping type rotating disc 4; one end of the shifting plate 9c is provided with a fixed column 9c1 along the vertical direction, the top of the fixed column 9c1 is also provided with a spacing ring 9c2, and the shifting plate 9c is rotatably arranged on the triangular fixed frame 9b through the fixed column 9c1 and is in the radial direction of the clamping type rotating disc 4; the torsion spring is coaxially sleeved on the fixing column 9c1, two ends of the torsion spring are respectively welded with the upper end and the lower end of the shifting plate 9c and the upper end and the lower end of the triangular fixing frame 9b, and the shifting plate 9c and the clamping type rotating disc 4 are in the same radial direction in the working state.
After the steel pipe galvanizing is finished, a zinc film exists on the surface of a hot galvanizing pool, the steel pipe is directly taken out from the hot galvanizing pool to enable the zinc film to cover the steel pipe, the galvanized steel pipe is not easy to clean, a synchronous belt sliding table 9a is started, the working end of the synchronous belt sliding table is enabled to move on two sides of a pickling pool or a hot galvanizing pool, so that a triangular fixing frame 9b drives a shifting plate 9c to shift on the surface of the hot galvanizing pool, a fixed column 9c1 is rotatably connected with the triangular fixing frame 9b, a first torsion spring 9d is coaxially sleeved on the fixed column 9c1, two ends of the first torsion spring are respectively welded with the shifting plate 9c and the upper end and the lower end of the triangular fixing frame 9b, the shifting plate 9c elastically overturns on one side of a clamping type rotating disc 4 and then restores, the shifting plate 9c shifts the zinc film aside in the moving process, the steel pipe without the zinc film can be conveniently.
As shown in fig. 2, two sides of the top end of the main suspension rod 1 are further provided with fixing lugs 1a for fixing and suspending with a lifting rope.
The fixing lug 1a is convenient to be connected with the working end of the suspension crane through a lifting rope, so that the suspension main suspension rod 1 can be used for processing the steel pipe conveniently.
The working principle of the invention is as follows:
the device realizes the functions of the invention through the following steps, thereby solving the technical problems provided by the invention:
the method comprises the following steps: horizontally suspending, namely, coaxially penetrating a suspension shaft 5 through a steel pipe to enable a first synchronous chain transmission mechanism 7b to be connected in a clamping groove 4a1, enabling the first synchronous chain transmission mechanism 7b to be abutted against the circumferential surface of a second synchronous chain transmission mechanism 7c by rotating a dart-shaped rotating claw 4b, and then respectively fixing a first square wing butterfly screw 4d and a second square wing butterfly screw 4e in a first fixing groove 4b1 and a second fixing groove 4b2, namely horizontally suspending the steel pipe on a rotary type suspension bracket, and fixedly connecting a fixing lug 1a through a suspension rope by a suspension machine, thereby facilitating the sequential processing treatment;
step two: pickling, namely placing the hanger in a pickling tank through a hanging machine until pickling solution completely submerges the steel pipe, starting a lifter 8d to enable an arc partition plate 8a on the pickling tank to close the pickling tank, preventing the acid solution from splashing, and standing the steel pipe in the pickling tank for a period of time to remove an oxide layer on the surface of the steel pipe, so that galvanizing is facilitated;
step three: removing acid liquor, namely suspending the top of a pickling tank by a rotary crane through the crane, starting a servo motor 7a, driving a rotating column 3 to rotate on a tripod 2 through an output shaft of the servo motor by a first synchronous chain transmission mechanism 7b and a second synchronous chain transmission mechanism 7c, driving a steel pipe to rotate relative to a main suspension rod 1 by a clamping type rotating disc 4, enabling the surface of the steel pipe to be remained in the acid liquor and fall into the pickling tank, placing the rotary hanger in an aeration water tank through the crane, starting the rotary hanger again, enabling the steel pipe to rotate in the aeration water tank, and cleaning the acid liquor on the surface of the steel pipe to prevent the residual acid liquor from reacting with zinc plating liquor;
step four: dewatering, namely suspending the rotary hanger on the top of the aeration water tank through a suspension crane, and starting the rotary hanger to enable residual water on the surface of the steel pipe to fall into the aeration water tank so as to avoid the residual water from diluting the galvanizing liquid;
step five: galvanizing, namely placing the rotary hanger in a hot galvanizing pool through a suspension bracket until pickling solution completely submerges the steel pipe, closing a protective cover 8 on the hot galvanizing pool, and standing the steel pipe in the hot galvanizing pool for a period of time;
step six: remove the zinc liquid, start zinc film and dial ware 9 for hot zinc liquid surface zinc film is dialled to one side, prevents that the zinc film from covering difficult getting rid of on the steel pipe, opens protection casing 8 again, starts the loop wheel machine with rotation gallows suspension hot galvanizing bath top, starts the rotation gallows, makes the steel pipe surface remain and falls to hot galvanizing bath in the zinc liquid, places the appointed place through the galvanized steel pipe after the loop wheel machine will cool off.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A production process of a galvanized welded steel pipe is characterized by comprising the following steps of,
the method comprises the following steps: horizontally suspending, namely horizontally suspending the rigid pipe on a rotary hanger, and fixedly connecting two sides of the top end of the hanger through a suspension crane;
step two: pickling, namely placing the hanger in a pickling tank through a hanging machine until pickling solution completely submerges the steel pipe, closing a protective cover (8) on the pickling tank, and standing the steel pipe in the pickling tank for a period of time to remove an oxide layer on the surface of the steel pipe, so that galvanizing is facilitated;
step three: removing acid liquor, suspending the top of a pickling tank by a rotary crane through the crane, starting a rotary hanger to enable the surface of the steel pipe to be remained in the acid liquor to fall into the pickling tank, placing the rotary hanger in an aeration water tank through the crane, and starting the rotary hanger to enable the steel pipe to rotate in the aeration water tank, so that the acid liquor on the surface of the steel pipe is cleaned, and the residual acid liquor is prevented from reacting with a zinc plating solution;
step four: dewatering, namely suspending the rotary hanger on the top of the aeration water tank through a suspension crane, and starting the rotary hanger to enable residual water on the surface of the steel pipe to fall into the aeration water tank so as to avoid the residual water from diluting the galvanizing liquid;
step five: galvanizing, namely placing the rotary hanger in a hot galvanizing pool through a suspension bracket until pickling solution completely submerges the steel pipe, closing a protective cover (8) on the hot galvanizing pool, and standing the steel pipe in the hot galvanizing pool for a period of time;
step six: remove the zinc liquid, start zinc membrane and dial out ware (9) for hot zinc liquid surface zinc membrane is dialled to one side, prevents that the zinc membrane from covering difficult the getting rid of on the steel pipe, opens protection casing (8) again, starts the crane with rotation gallows suspension hot galvanizing bath top, starts the rotation gallows, makes the steel pipe surface remain and falls to hot galvanizing bath in the zinc liquid, places the appointed place through the galvanized steel pipe after the crane will cool off.
2. The production process and device of the galvanized welded steel pipe as claimed in claim 1, wherein the rotary suspension bracket comprises: the two sides of the top end of the main suspension rod (1) are fixedly connected with the working end of the suspension machine through a suspension rope; the tripod (2) is arranged on two sides of the bottom end of the main suspension rod (1) in a horizontal projection overlapping mode; the rotating columns (3) are axially and rotatably arranged on two sides of the bottom end of the tripod (2) along the main suspension rod (1); the clamping type rotating disc (4) is coaxially and fixedly arranged at the inner end of the rotating column (3); the hanging shaft (5) is coaxially provided with clamping columns (6) at two ends, and in a working state, the hanging shaft (5) coaxially penetrates through the steel pipe and the clamping columns (6) are clamped with the outer circumferential surface of the clamping type rotating disc (4); and the driving pieces (7) are arranged on two sides of the bottom end of the main suspension rod (1), and output shafts of the driving pieces are coaxially and fixedly connected with the outer end of the rotating column (3).
3. The production process and the device for the galvanized welded steel pipe according to the claim 2, characterized in that the clamping type rotating disc (4) comprises: the rotating disc (4a) is coaxially and rotatably arranged on two sides of the bottom end of the tripod (2) through the rotating column (3); a clamping groove (4a1) convenient for clamping the clamping column (6) is formed in the outer circumferential surface of the rotating disc (4 a); a dart-shaped rotating claw (4b), one end of which is rotatably arranged outside the clamping groove (4a1) through a rotating screw (4c), wherein, in the working state, the concave part of the dart-shaped rotating claw (4b) is abutted against the circumferential surface of the clamping column (6), and the two ends of the outer side of the dart-shaped rotating claw (4b) are respectively provided with a first fixing groove (4b1) and a second fixing groove (4b2) along the radial direction of the rotating disc (4 a); the wing-shaped rotary table comprises a first wing-shaped butterfly screw (4d) and a second wing-shaped butterfly screw (4e), wherein the screws are hinged with the outer circumferential surface of the rotary table (4a), and in a working state, the screws are fixedly connected with the fixing grooves.
4. The production process and the device for the galvanized welded steel pipe according to the claim 1, characterized in that the dart-shaped rotating claw (4b) is also provided with a waist-shaped opening (4b3) coaxial with the rotating screw (4 c); the rotating disc (4a) is also provided with a limit screw (4f) which is in sliding fit with the waist-shaped opening (4b 3).
5. A process and an apparatus for the production of galvanized welded steel pipes according to claim 1, characterized in that the driving member (7) comprises: a servo motor (7a) arranged on the inner side of the top end of the tripod (2); the servo motor is characterized by comprising a first synchronous chain transmission mechanism (7b) and a second synchronous chain transmission mechanism (7c), and an output shaft of the servo motor (7a) is in synchronous transmission connection with the outer ends of the rotating columns (3) on the two sides of the bottom through the transmission mechanisms.
6. The production process and device of the galvanized welded steel pipe according to claim 1, characterized in that the clamping column (6) comprises: first spacing post (6a), spacing post of second (6b) and third (6c), spacing post is coaxial setting in proper order at suspension shaft (5) both ends, first spacing post (6a) and spacing post of third (6c) diameter are greater than joint groove (4a1) groove footpath, spacing post of second (6b) diameter is less than joint groove (4a1) groove footpath.
7. The production process and the production device of the galvanized welded steel pipe according to the claim 1, characterized in that the suspension shaft (5) is a square shaft and the diameter is smaller than the inner diameter of the steel pipe.
8. A process and an apparatus for the production of galvanized welded steel pipes according to claim 1, characterized in that the protective cover (8) comprises: the arc partition plates (8a) are rotatably arranged on two sides of the pickling tank and the hot galvanizing tank; the device comprises a first connecting rod (8b) and a second connecting rod (8c), wherein two ends of the first connecting rod (8b) are respectively hinged with an inclined shaft end at the outer end of the arc partition plate (8a) and one end of the second connecting rod (8 c); and the working end of the lifter (8d) is vertically upwards hinged with the other end of the second connecting rod (8 c).
9. The process and apparatus for producing a galvanized welded steel pipe as set forth in claim 1, characterized in that the zinc film remover (9) comprises: the synchronous belt sliding tables (9a) are fixedly arranged on two sides of the pickling tank and the galvanizing tank; the triangular fixing frame (9b) is vertically arranged at the top of the movable working end of the triangular fixing frame (9b) along the radial direction of the clamping type rotating disc (4); one end of the shifting plate (9c) is provided with a fixed column (9c1) in the vertical direction, the top of the fixed column (9c1) is also provided with a limit ring (9c2), and the shifting plate (9c) is rotatably arranged on the triangular fixed frame (9b) through the fixed column (9c1) and is radial along the clamping type rotating disc (4); first torsional spring (9d) and first torsional spring (9d), the coaxial cover of torsional spring is established on fixed column (9c1) and both ends respectively with dial board (9c) and triangle mount (9b) upper and lower end welding, under the operating condition, dial board (9c) and joint formula rolling disc (4) syntropy.
10. The production process and the device for the galvanized welded steel pipe according to the claim 1, characterized in that the two sides of the top end of the main suspension rod (1) are also provided with fixing lugs (1a) which are convenient for being fixedly suspended with a lifting rope.
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| CN114908310A (en) * | 2022-05-17 | 2022-08-16 | 山西盛福昌管业有限公司 | Production process of galvanized square pipe |
| CN115323305A (en) * | 2022-10-14 | 2022-11-11 | 天津君诚管道实业集团有限公司 | Galvanizing production process of hot-dip galvanized steel pipe |
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