CN110541143A - Zinc impregnation system and zinc impregnation method - Google Patents

Zinc impregnation system and zinc impregnation method Download PDF

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Publication number
CN110541143A
CN110541143A CN201910983596.4A CN201910983596A CN110541143A CN 110541143 A CN110541143 A CN 110541143A CN 201910983596 A CN201910983596 A CN 201910983596A CN 110541143 A CN110541143 A CN 110541143A
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China
Prior art keywords
furnace
sand blasting
workpiece
frame
oil
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CN201910983596.4A
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CN110541143B (en
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吴立中
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吴立中
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04Cleaning involving contact with liquid
    • B08B3/08Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04Cleaning involving contact with liquid
    • B08B3/10Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity, by vibration
    • B08B3/12Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity, by vibration by sonic or ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086Descaling; Removing coating films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/003Removing abrasive powder out of the blasting machine
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C10/00Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02Pretreatment of the material to be coated
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C10/00Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes

Abstract

The zinc impregnation system comprises a drying and oil removing device, a rust removing device, a zinc impregnation device and a cooling and dust removing device which are arranged along the material conveying direction; the drying and oil removing equipment comprises a high-temperature oil removing tank for drying workpieces; the rust removing equipment comprises a shot blasting machine and a sand blasting machine, wherein workpieces are transported between a high-temperature oil removing tank and the shot blasting machine and between the shot blasting machine and the sand blasting machine through transport vehicles; the zincizing equipment comprises a zincizing furnace for zincizing the workpiece, and the zincizing furnace comprises a furnace pipe for placing the workpiece; the cooling ash removal equipment comprises a separating dust remover used for removing ash from the workpiece in the furnace. The utility model provides a zinc impregnation system, its structure is simple and easy, easy operation, and the work piece alloy-layer hardness that adopts this system zinc impregnation to come out is high, stand wear and tear and anti scratch ability reinforce, corrosion resisting property is good.

Description

Zinc impregnation system and zinc impregnation method
Technical Field
The application relates to the technical field of zinc impregnation equipment, in particular to a zinc impregnation system and a zinc impregnation method.
Background
The joint hoop is a common fitting used in oil production equipment and is used for connecting an upper oil pipe and a lower oil pipe. It is common to provide external threads at the junction of the upper and lower tubing, provide internal threads on the inner surface of the joint band, and then connect the upper and lower tubing with the joint band to form a long tubing length long enough to penetrate the subsurface. The joint hoop in the prior art is usually made of materials such as common carbon steel, 13cr stainless steel, nickel-based alloy and the like. Since the working environment of oil pipes generally requires high corrosion resistance and wear resistance of equipment, how to improve the corrosion resistance and wear resistance of workpieces is always the direction of technical improvement.
The zinc impregnation is mainly used for improving the corrosion resistance of steel materials in the atmosphere and natural water environment and can be divided into an immersion plating type and a diffusion type. The surface texture obtained by hot dip galvanizing consists of a diffusion layer and a zinc coating, and belongs to dip galvanizing type zinc impregnation. The diffusion type zincizing layer is completely composed of the diffusion layer and is obtained by adopting the powder zincizing and vacuum zincizing processes. The existing zinc impregnation system is very complex, has various procedures and poor zinc impregnation effect.
Disclosure of Invention
the purpose of the application is to provide a zincizing system with simple structure and good zincizing effect and a zincizing method with good zincizing effect aiming at the defects in the prior art.
The application provides a zinc impregnation system, which comprises a drying and oil removing device, a rust removing device, a zinc impregnation device and a cooling and dust removing device, wherein the drying and oil removing device, the rust removing device, the zinc impregnation device and the cooling and dust removing device are arranged along the material conveying direction; the drying and oil removing equipment comprises a high-temperature oil removing tank for drying workpieces; the rust removal equipment comprises a shot blasting machine and a sand blasting machine, and workpieces are transported between the high-temperature oil removal tank and the shot blasting machine and between the shot blasting machine and the sand blasting machine through transport vehicles; the zincizing equipment comprises a zincizing furnace for zincizing the workpiece, and the zincizing furnace comprises a furnace pipe for placing the workpiece; the cooling ash removal equipment comprises a separation dust remover for removing ash from the workpiece in the furnace; and a crane for hoisting the furnace pipe is arranged between the zinc impregnation equipment and the cooling ash removal equipment.
the shot blasting machine comprises a frame, wherein the frame comprises a top plate, a back plate, a left side plate and a right side plate, the left side plate and the right side plate are fixedly connected to two sides of the back plate respectively, the top plate is fixedly arranged above the back plate, the frame further comprises a panel assembly fixedly arranged between the left side plate and the right side plate to enclose a shot blasting cavity, the panel assembly comprises a panel body and two baffles, the two baffles are obliquely and fixedly arranged on two sides of the panel body to enclose a trapezoidal open space sunken towards the inside of the frame, the baffles are provided with movable door mechanisms, a rotating motor is arranged inside the frame, an output shaft of the rotating motor is connected with a horizontally arranged turntable, and a plurality of work tables for placing workpieces are arranged on the turntable; in an assembled state, the turntable spans the shot blasting chamber and the trapezoidal open space; the bottom of the frame is provided with a conical discharge opening, the top plate is provided with a pill collecting box, the pill collecting box is connected with a shot blasting mechanism in the frame, the conical discharge opening is communicated with the side part of the pill collecting box through a screw elevator, and the top of the pill collecting box is communicated with a dust removal device.
The sand blasting machine comprises a first sand blasting cavity and a second sand blasting cavity, wherein the first sand blasting cavity is communicated with the second sand blasting cavity, conical discharge openings are formed in the bottom end of the first sand blasting cavity and the bottom end of the second sand blasting cavity, each conical discharge opening is provided with a sand blasting mechanism, each sand blasting mechanism comprises a sand blasting pipeline, and the outlet end of each sand blasting pipeline is correspondingly communicated with the side wall of the first sand blasting cavity and the side wall of the second sand blasting cavity; the sand blasting machine further comprises a dust removal device, and the dust removal device is communicated with the first sand blasting cavity and the second sand blasting cavity through a dust removal pipeline.
And movable door mechanisms are arranged on the side wall of the first sand blasting cavity and the side wall of the second sand blasting cavity.
The movable door mechanism comprises a movable door body and a telescopic cylinder, the telescopic cylinder is vertically and fixedly mounted on the side walls of the first sand blasting cavity and the second sand blasting cavity, and a telescopic rod of the telescopic cylinder is fixedly connected with the movable door body through a connecting piece.
The zinc impregnation furnace also comprises a movable frame for supporting the furnace pipe, a rotating shaft is fixedly arranged in the middle of the furnace pipe, roller groups are arranged at two ends of the frame, and two ends of the rotating shaft are respectively arranged on the roller groups at two ends of the frame to erect the furnace pipe; a driving motor is arranged at any end of the frame and is in transmission connection with the rotating shaft through a gear set so as to drive the furnace pipe to rotate around the axis of the rotating shaft; the sherardizing furnace still includes the heating furnace, the heating furnace includes half stove on the left side and half stove on the right side that the symmetry set up, half stove on the left side and half stove bottom end face on the right side all fixed mounting have the drive half stove of half stove on the back of the body or the drive frame that removes in opposite directions for half stove on the right side.
The length of the heating furnace is greater than that of the furnace pipe and less than that of the rotating shaft.
The application also provides a zinc impregnation method, which comprises the following steps of a, drying and removing oil, putting a workpiece into a high-temperature oil removal tank, closing a tank door of the high-temperature oil removal tank, starting equipment, setting the drying temperature to be 400 ℃, setting the holding time to be 3 hours, and starting heating; after the workpiece is heated to 400 ℃, the oil on the surface of the workpiece can be carbonized into dregs and oil smoke, so that the workpiece A after oil removal is obtained, and the oil smoke generated during oil removal is discharged after being treated by a purifier; b, derusting, namely, after the workpiece A in the step a is cooled to 30 ℃ in an empty mode, transporting the workpiece A to a shot blasting machine, wherein the shot blasting machine adopts 4Kg of 46-mesh first-grade brown fused alumina, the injection pressure is set to be 0.5MPa, and then performing shot blasting on the workpiece; conveying the shot-blasted workpiece A to a sand blasting machine for sand blasting process treatment to obtain a workpiece B; collecting dust generated during shot blasting and sand blasting by a dust removal device; step c, zinc impregnation, namely placing the workpiece B in the step B into a furnace pipe of a zinc impregnation furnace, and adding zinc impregnation powder, wherein the zinc impregnation powder comprises the following components in percentage by mass: greater than or equal to 34% of metallic zinc, less than or equal to 0.2% of Pb, less than or equal to 0.2% of Fe, less than or equal to 0.0005% of As, less than or equal to 0.2% of Cd, greater than or equal to 65% of alumina, less than or equal to 0.06% of SiO2, less than or equal to 0.03% of Fe2O3, less than or equal to 0.30% of Na2O and proper amount of water; setting the heating temperature of the zincizing furnace to be 400 ℃, setting the pressure to be less than 0.05MPa, and setting the heating time according to the zincizing thickness of the workpiece; after heating, moving the furnace pipe out of the heating furnace to obtain a workpiece C; d, removing ash and cooling, namely, after the workpiece C placed in the furnace pipe in the step C is cooled to 100 ℃ by a fan or naturally cooled, hoisting the furnace pipe by a crane and placing the furnace pipe on a separation dust remover for dust removal to obtain a workpiece D; e, code spraying and boxing are carried out, and the workpiece D in the step D is code sprayed and boxed.
In the step c, if the pressure of the furnace pipe is more than 0.05MPa, the zinc impregnation furnace automatically gives an alarm and closes, and the zinc impregnation furnace automatically opens again after the temperature and the pressure are reduced.
Wherein ultrasonic degreasing is performed before step a. The method specifically comprises the following steps: adding degreasing and oil removing powder and water into ultrasonic oil removing equipment according to the mass ratio of 1:30, wherein the water level does not exceed 2/3 of a water tank; the coupling is moved into the iron material frame, the iron material frame is placed neatly and stacked firmly, the material frame is hung into a water tank of ultrasonic oil removal equipment by using a travelling crane, the material frame is taken out after being soaked for 3 minutes, and then the material frame is washed for 2 minutes by using clean water and dried by using compressed air.
The zinc impregnation system is simple in structure and easy to operate, can perform a high-quality zinc impregnation process on a workpiece, is high in hardness of an alloy layer of the workpiece subjected to zinc impregnation by the zinc impregnation system, is high in abrasion resistance and scratch resistance, and ensures good anti-galling performance. According to the zinc impregnation method, the reasonable process setting is adopted, the zinc impregnation quality of the workpiece is effectively improved, the alloy layer is good in thickness uniformity through high-temperature diffusion of the alloy powder, the impregnation layer with uniform thickness can be obtained on the irregular surface, the treatment of a component with a complex shape is facilitated, the alloy layer formed through high-temperature diffusion is high in hardness, strong in abrasion resistance and scratch resistance, and good anti-thread gluing performance is guaranteed.
Drawings
The present application is further explained with the aid of the drawings, but the embodiments in the drawings do not constitute any limitation to the present application, and a person skilled in the art can also derive other drawings from the following drawings without inventive effort.
FIG. 1 is a schematic view of a zincating system of the present application.
Fig. 2 is a schematic structural diagram of the shot blasting machine of the present application.
FIG. 3 is a schematic structural diagram of the sand blasting machine of the present application.
Fig. 4 is an enlarged view at B in fig. 3.
FIG. 5 is a schematic structural view of the zincizing furnace of the present application.
Fig. 6 is an enlarged view of a portion a in fig. 5.
Reference numerals: the device comprises a drying and oil removing device 10, a shot blasting machine 20, a sand blasting machine 30, a zinc impregnation device 40, a cooling and ash removal device 50, a furnace container 1, a rotating shaft 2, a driving motor 3, a gear set 4, a moving frame 5, a roller set 6, a left half furnace 71, a right half furnace 72, a driving frame 8, a U-shaped mounting seat 91, a rotating handle 92, a clamping hook 93, an L-shaped clamping block 94, a first sand blasting cavity 101, a second sand blasting cavity 102, a dust removal pipeline 103, a dust removal device, 104, a sand blasting mechanism 105, a telescopic cylinder 106, a movable door body 107, a sand collecting cylinder 108, an air supply pipeline 109, a compressed air pipeline 110, a sand blasting pipeline 111, a top plate 201, a right side plate 202, a left side plate 203, a back plate 204, an operation window 205, a panel assembly 206, a baffle 207, a turntable 208, a workbench pill 209, a spiral elevator 210.
Detailed Description
The present application is further described in conjunction with the following examples.
the specific embodiment of the zincizing system of the present application, as shown in fig. 1, includes a drying and degreasing device 10, a rust removing device, a zincizing device 40 and a cooling and ash removing device 50, which are arranged along the material conveying direction; the drying and oil removing equipment comprises a high-temperature oil removing tank for drying workpieces; the rust removing equipment comprises a shot blasting machine 20 and a sand blasting machine 30, and workpieces are transported between the high-temperature oil removing tank and the shot blasting machine 20 and between the shot blasting machine 20 and the sand blasting machine 30 through transport vehicles; the zincizing equipment 40 comprises a zincizing furnace for zincizing the workpiece, and the zincizing furnace comprises a furnace pipe for placing the workpiece; the cooling and ash removing device 50 comprises a separating dust remover for removing ash from the workpiece in the furnace; a crane for hoisting the furnace pipe is arranged between the zinc impregnation equipment 40 and the cooling ash removal equipment 50. Preferably, the number of the transport vehicles may be 1-10, and the number of the cranes may also be 1-10.
As shown in fig. 2, the shot blasting machine includes a frame, the frame includes a top plate 201, a back plate 204, a left side plate 203 and a right side plate 202, the left side plate 203 and the right side plate 202 are respectively and fixedly connected to two sides of the back plate 204, and the top plate 201 is fixedly mounted above the back plate 204. The frame also comprises a panel assembly 206 fixedly arranged between the left side plate 203 and the right side plate 202, and the top plate 201, the back plate 204, the left side plate 203, the right side plate 202 and the panel assembly 206 together enclose a shot blasting chamber. The panel assembly 206 includes a panel body and two blocking plates 207, and the two blocking plates 207 are fixedly installed at both sides of the panel body in an inclined manner to enclose a trapezoidal open space depressed toward the inside of the rack. Baffle 207 all is provided with the dodge gate mechanism, and the frame is inside to be provided with the rotating electrical machines, and the output shaft of rotating electrical machines is connected with the carousel 208 of level setting, is provided with a plurality of workstations 209 that are used for placing the work piece on the carousel 208. In the assembled state, the turntable 208 spans the blast chamber and the trapezoidal open space. The bottom of frame is provided with the taper discharge opening, and ball case 211 is installed to roof 201, and ball case 211 connects the shot-blasting mechanism in the frame. The tapered discharge opening is communicated with the side part of the pill collecting box 211 through the screw elevator 210, and the top part of the pill collecting box 211 is communicated with the dust removing device 104 through the dust removing pipeline 103.
In order to facilitate the operation of the shot blasting mechanism, the left side plate 203 may be provided with a working window for a human hand to insert into. The movable door mechanism comprises a movable door body 107 and a telescopic cylinder 106, the telescopic cylinder 106 is vertically and fixedly mounted on the front surface of the baffle 207, and a telescopic rod of the telescopic cylinder 106 is fixedly connected with the movable door body 107 through a connecting piece.
The working process of the shot blasting machine comprises the following steps: the shot blasting mechanism in the frame continuously performs shot blasting surface process treatment on the workpiece on the workbench 209, in the shot blasting process, the rotating motor can drive the turntable 208 to rotate, and the turntable 208 can transfer the treated workpiece to the trapezoidal open space from the shot blasting chamber. In the transferring process, the movable door mechanism can also perform door opening or door closing actions along with the movement of the workpiece, so that the processed workpiece can be transferred to a trapezoidal open space outside the shot blasting cavity, and a worker can take out the workpiece and put the workpiece to be processed. The shot blasting machine does not need to be frequently switched on and off, cannot affect the service life of the shot blasting machine, saves the feeding time, and improves the overall working efficiency. In addition, the processed shot blast falls into the screw elevator 210 at the bottom through the tapered discharge port at the bottom of the frame, and the screw elevator 210 lifts the shot blast and the dust together into the shot collecting box 211 at the top. And in the process that shot blasting and dust fall into the shot collection box 211, because the dust weight is lighter, the dust can directly enter into the dust removal mechanism through the dust removal pipeline 103, and the shot blasting with larger particles can directly fall into the shot blasting box, so that the filtering and recycling are realized, the production cost is further saved, and the utilization efficiency is improved.
The thrown sand grains flow into the steel plate net at the bottom through the small holes to be screened, and are sent into a lifter through a screw conveyor, and are lifted into a separator by the lifter to be separated. The dust is sucked by a fan and sent to a dust remover for filtering, and the cleaned air is discharged into the atmosphere. The dust on the cloth bag falls into a dust collecting box at the bottom of the dust collector through mechanical vibration and can be removed periodically. The waste sand flows out from the waste pipe and can be recycled. The pellet and sand mixture is recycled and enters the chamber body through the recycling pipe, and is recycled after being separated by the separator.
As shown in fig. 3 to 4, the sand blasting machine includes a first sand blasting chamber 101 and a second sand blasting chamber 102, and the first sand blasting chamber 101 and the second sand blasting chamber 102 are arranged in communication. The bottom of first sandblast chamber 101 and the bottom of second sandblast chamber 102 all are provided with the toper discharge opening, and sandblast mechanism 105 is all installed to each toper discharge opening. The sand blasting mechanism 105 comprises a sand blasting pipeline 111, and the outlet end of the sand blasting pipeline 111 correspondingly communicates with the side wall of the first sand blasting cavity 101 and the side wall of the second sand blasting cavity 102. The sand blasting machine further comprises a dust removal device 104, and the dust removal device 104 is communicated with the second sand blasting cavity 102 through a dust removal pipeline 103. The sand blasting mechanism 105 further comprises a sand collecting cylinder 108, the top end of the sand collecting cylinder 108 is communicated with the conical discharge port, the bottom end of the sand collecting cylinder 108 is communicated with a sand blasting pipeline 111, and an air supplementing pipeline 109 and a compressed air pipeline 110 are arranged on the side face of the sand collecting cylinder 108. One end of the air supply pipeline 109 is communicated with the first sand blasting cavity 101 and the second sand blasting cavity 102, and the other end of the air supply pipeline 109 is communicated with the side part of the sand collecting cylinder 108. One end of the compressed air pipe 110 communicates with the side of the sand trap 108, and the other end communicates with a negative pressure device (not shown). In order to simplify the structure of the sand blasting machine and reduce the cost, the sand collecting cylinder 108 of the first sand blasting cavity 101 and the sand collecting cylinder 108 of the second sand blasting cavity 102 are communicated with the same negative pressure equipment through a compressed air pipeline 110.
In order to enhance the degree of automation and improve the safety, the side walls of the first sand blasting chamber 101 and the second sand blasting chamber 102 are provided with movable door mechanisms. Specifically, the movable door mechanism includes a movable door body 107 and a telescopic cylinder 106, the telescopic cylinder 106 is vertically and fixedly mounted on the side walls of the first sand blasting chamber 101 and the second sand blasting chamber 102, and a telescopic rod of the telescopic cylinder 106 is fixedly connected with the movable door body 107 through a connecting piece.
The working principle of the sand blasting machine of the embodiment is as follows: the negative pressure device provides high-speed airflow into the sand collecting cylinder 108 through the compressed air pipeline 110, and the sand material in the sand collecting cylinder 108 is sucked into the side wall of the first sand blasting cavity 101 and the side wall of the second sand blasting cavity 102 through the sand blasting pipeline 111 and is ejected out through the nozzle to be sprayed to the surface to be processed through the negative pressure formed in the sand collecting cylinder 108 through the high-speed movement of the airflow. Compressed air is both a feed power and an acceleration power. Through setting up first sandblast chamber 101 and second sandblast chamber 102 intercommunication in this application to with the work area intercommunication of two sandblast machines, then dust collector 104 passes through dust removal pipeline 103 and arbitrary intercommunication in first sandblast chamber 101 and second sandblast chamber 102, perhaps both communicate, thereby realize two dust removers dust collector 104 of sharing, reduced the energy consumption, reduced occupation space area, saved the cost. The shaped beams formed by the sand particles thrown out at high speed evenly strike the surface of the workpiece, thereby achieving the purpose of cleaning.
referring to fig. 5 and 6, the zincizing furnace comprises a furnace pipe 1 and a movable frame 5 for supporting the furnace pipe 1, wherein a rotating shaft 2 is fixedly installed in the middle of the furnace pipe 1, roller groups 6 are respectively arranged at two ends of the frame, and two ends of the rotating shaft 2 are respectively installed on the roller groups at two ends of the frame to support the furnace pipe 1; and a driving motor 3 is arranged at any end part of the frame, and the driving motor 3 is in transmission connection with the rotating shaft 2 through a gear set 4 so as to drive the furnace pipe 1 to rotate around the axis of the rotating shaft 2. The zincizing furnace also comprises a heating furnace, the heating furnace comprises a left half furnace 71 and a right half furnace 72 which are symmetrically arranged, and the bottom end faces of the left half furnace 71 and the right half furnace 72 are both fixedly provided with a driving vehicle frame 8 for driving the left half furnace 71 to move back to back or in opposite directions relative to the right half furnace 72. It should be noted that the moving frame 5 and the driving frame 8 can be driven and driven by motors, which further improves the automation effect. In the present embodiment, in order to facilitate the smooth installation of the furnace 1 in the heating furnace, the length of the heating furnace is greater than the length of the furnace 1 and less than the length of the rotary shaft 2.
In this embodiment, in order to improve the safety performance, the heating furnace further includes a locking mechanism for locking and connecting the left half furnace 71 and the right half furnace 72. Specifically, the locking mechanism comprises an L-shaped fixture block 94 fixedly mounted on the left half furnace 71 and a hook 93 mounted on the right half furnace 72, the right half furnace 72 is fixedly mounted with a U-shaped mounting seat 91, two end portions of the U-shaped mounting seat 91 are provided with locking shafts in a penetrating manner, a rotating portion of the hook 93 is sleeved and fixed on the locking shafts, and the locking shafts are further fixedly mounted with a rotating handle 92.
The use method of the zincizing furnace of the embodiment comprises the following steps: putting a workpiece needing to be subjected to zinc impregnation and a zinc impregnation raw material into the furnace pipe 1, and controlling the moving frame 5 to move the furnace pipe 1 between the left half furnace 71 and the right half furnace 72; then the driving frame 8 is controlled to enable the left half furnace 71 to move relative to the right half furnace 72 in the opposite direction until the two are closed; then, starting the heating furnace to heat normally, and simultaneously, controlling the rotating shaft 2 through the driving motor 3 to drive the furnace pipe 1 to carry out rotary zinc impregnation; after the zinc impregnation is finished, the driving frame 8 controls the left half furnace 71 to move back to back relative to the right half furnace 72 until the furnace pipe 1 can move out of the heating furnace; finally, the furnace 1 is removed and cooled. This application adopts split type design's heating furnace, simple structure, be convenient for preparation, can accelerate cooling rate, improve production efficiency.
The zinc impregnation system is simple in structure and easy to operate, and can perform high-quality zinc impregnation operation on workpieces. The alloy layer of the workpiece which is subjected to zinc impregnation by adopting the system has high hardness and strong abrasion and scratch resistance, and better anti-thread gluing performance is ensured.
One embodiment of a zincating method of the present application may include the following steps.
Step a, drying and removing oil, namely putting a workpiece into a high-temperature oil removing tank, closing a tank door of the high-temperature oil removing tank, starting equipment, setting the drying temperature to be 400 ℃, setting the holding time to be 3 hours, and starting heating; after the workpiece is heated to 400 ℃, oil on the surface of the workpiece is carbonized into dregs and oil smoke, so that the workpiece A after oil removal is obtained, and the oil smoke generated during oil removal is discharged after being treated by a purifier.
b, derusting, namely, after the workpiece A in the step a is cooled to 30 ℃ in an empty mode, transporting the workpiece A to a shot blasting machine 20, setting the injection pressure to be 0.5MPa by adopting 4Kg of 46-mesh first-grade brown corundum for the shot blasting machine 20, and then carrying out shot blasting on the workpiece; conveying the shot-blasted workpiece A to a sand blasting machine 30 for sand blasting process treatment to obtain a workpiece B; dust generated during shot blasting and sand blasting is collected by a dust removal device.
Step c, zinc impregnation, namely placing the workpiece B in the step B into a furnace pipe of a zinc impregnation furnace, and adding zinc impregnation powder, wherein the zinc impregnation powder comprises the following components in percentage by mass: greater than or equal to 34% of metallic zinc, less than or equal to 0.2% of Pb, less than or equal to 0.2% of Fe, less than or equal to 0.0005% of As, less than or equal to 0.2% of Cd, greater than or equal to 65% of alumina, less than or equal to 0.06% of SiO2, less than or equal to 0.03% of Fe2O3, less than or equal to 0.30% of Na2O and proper amount of water; setting the heating temperature of the zincizing furnace to be 400 ℃, setting the pressure to be less than 0.05MPa, and setting the heating time according to the zincizing thickness of the workpiece; and after heating, moving the furnace pipe out of the heating furnace to obtain a workpiece C. The principle of the powder zincing technology is that the zincing agent and the steel workpiece are placed in a zincing furnace and heated to about 400 ℃, and active zinc atoms permeate into the steel workpiece from the outside to the inside. At the same time, the iron atoms diffuse from the inside to the outside, which forms a zinciferous layer, an intermetallic zinc-iron compound, on the surface of the steel part.
And D, removing ash and cooling, namely cooling the workpiece C placed in the furnace pipe in the step C to 100 ℃ by adopting a fan or naturally cooling, and then hoisting the furnace pipe by using a crane and placing the furnace pipe on a separation dust remover for removing dust to obtain a workpiece D. Specifically, after the zinc impregnation process is finished and cooled, the charging inner cylinder is lifted by a crane and placed on a separation dust remover, a furnace cover with a leakage hole is replaced, a separation dust remover cover is covered, and a charging barrel purging system is connected. And starting the dust removal fan, the pulse controller, the rotating motor and the conveying motor in sequence. After the three motors are sequentially started, the charging inner cylinder rotates along with the rotating motor, so that the workpieces and the zinc powder in the charging inner cylinder rotate along with the charging barrel, and the zinc powder falls onto a zinc powder collecting conveyor from a furnace cover with a leakage hole in a batch manner. In order to more effectively remove the zinc powder on the workpiece in the charging barrel, a set of air inlet purging system is specially added, and the zinc powder in the collecting conveyor falls into the collecting box through the discharging port. And the raised dust is collected in the dust remover through the dust removal device, so that the workpiece is separated from the zinc powder, and no dust overflows.
E, code spraying and boxing are carried out, and the workpiece D in the step D is code sprayed and boxed.
And c, when the pressure of the furnace pipe is more than 0.05MPa, the zinc impregnation furnace automatically gives an alarm and closes the zinc impregnation furnace, and the zinc impregnation furnace automatically opens again after the temperature and the pressure are reduced.
preferably, ultrasonic degreasing may also be performed before step a. Specifically, degreasing and oil removing powder and water are added into ultrasonic oil removing equipment according to the mass ratio of 1:30, the water level does not exceed 2/3 of a water tank, and oil removal can be started after the equipment is opened for 5 minutes. The coupling is moved into the iron material frame, the iron material frame is placed neatly and stacked firmly, the material frame is hung into a water tank of ultrasonic oil removal equipment by using a travelling crane, the material frame is taken out after being soaked for 3 minutes, then the material frame is washed for 2 minutes by using clean water and dried by using compressed air, and water stains and other impurities are removed.
The reasonable process arrangement of the zincification method of the embodiment effectively improves the zincification quality of the workpiece, the thickness uniformity of the alloy layer of the high-temperature diffusion alloy powder is good, the cementation layer with uniform thickness can be obtained on the irregular surface, the treatment of the component with complex shape is facilitated, the alloy layer formed by high-temperature diffusion has high hardness, the wear resistance and scratch resistance are strong, and the better anti-thread gluing performance is ensured.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the protection scope of the present application, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims (10)

1. A zinc impregnation system is characterized by comprising a drying and oil removing device, a rust removing device, a zinc impregnation device and a cooling and dust removing device which are arranged along the material conveying direction;
The drying and oil removing equipment comprises a high-temperature oil removing tank for drying workpieces;
The rust removing equipment comprises a shot blasting machine and a sand blasting machine, and workpieces are transported between the high-temperature oil removing tank and the shot blasting machine and between the shot blasting machine and the sand blasting machine through transport vehicles;
The zincizing equipment comprises a zincizing furnace for zincizing the workpiece, and the zincizing furnace comprises a furnace pipe for placing the workpiece;
the cooling ash removal equipment comprises a separation dust remover for removing ash from the workpiece in the furnace; and a crane for hoisting the furnace pipe is arranged between the zinc impregnation equipment and the cooling ash removal equipment.
2. A zincating system according to claim 1, wherein: the shot blasting machine comprises a frame, wherein the frame comprises a top plate, a back plate, a left side plate and a right side plate, the left side plate and the right side plate are fixedly connected to two sides of the back plate respectively, the top plate is fixedly arranged above the back plate, the frame further comprises a panel assembly fixedly arranged between the left side plate and the right side plate to form a shot blasting cavity in a surrounding mode, the panel assembly comprises a panel body and two baffle plates, and the two baffle plates are fixedly arranged on two sides of the panel body in an inclined mode to form a trapezoidal open space sunken towards the inside of the frame in a surrounding mode; the baffle plates are provided with movable door mechanisms, a rotating motor is arranged in the rack, an output shaft of the rotating motor is connected with a horizontally arranged turntable, and the turntable is provided with a plurality of working tables for placing workpieces; the bottom of the frame is provided with a conical discharge opening, the top plate is provided with a pill collecting box, the pill collecting box is connected with a shot blasting mechanism in the frame, the conical discharge opening is communicated with the side part of the pill collecting box through a screw elevator, and the top of the pill collecting box is communicated with a dust removal device.
3. A zincating system according to claim 1 or 2, characterized in that: the sand blasting machine comprises a first sand blasting cavity and a second sand blasting cavity, the first sand blasting cavity is communicated with the second sand blasting cavity, conical discharge openings are formed in the bottom end of the first sand blasting cavity and the bottom end of the second sand blasting cavity, each conical discharge opening is provided with a sand blasting mechanism, each sand blasting mechanism comprises a sand blasting pipeline, and the outlet end of each sand blasting pipeline is correspondingly communicated with the side wall of the first sand blasting cavity and the side wall of the second sand blasting cavity; the sand blasting machine further comprises a dust removal device, and the dust removal device is communicated with the first sand blasting cavity and the second sand blasting cavity through a dust removal pipeline.
4. a zincating system according to claim 3, wherein: and movable door mechanisms are arranged on the side wall of the first sand blasting cavity and the side wall of the second sand blasting cavity.
5. A zincating system according to claim 4, wherein: the movable door mechanism comprises a movable door body and a telescopic cylinder, wherein the telescopic cylinder is vertically and fixedly installed on the side walls of the first sand blasting cavity and the second sand blasting cavity, and a telescopic rod of the telescopic cylinder is fixedly connected with the movable door body through a connecting piece.
6. A zincating system according to any one of claims 1 to 5, wherein: the zinc impregnation furnace also comprises a movable frame for supporting the furnace pipe, the middle part of the furnace pipe is fixedly provided with a rotating shaft, two end parts of the frame are provided with roller groups, and two end parts of the rotating shaft are respectively arranged on the pulley blocks at the two end parts of the frame so as to erect the furnace pipe; a driving motor is arranged at any end of the frame and is in transmission connection with the rotating shaft through a gear set so as to drive the furnace pipe to rotate around the axis of the rotating shaft; the sherardizing furnace still includes the heating furnace, the heating furnace includes half stove on the left side and half stove on the right side that the symmetry set up, half stove on the left side and half stove bottom end face on the right side all fixed mounting have the drive half stove of half stove on the back of the body or the drive frame that removes in opposite directions for half stove on the right side.
7. A zincating system according to claim 6, wherein: the length of the heating furnace is greater than that of the furnace pipe and less than that of the rotating shaft.
8. A zincizing method, which is characterized in that: the method comprises the following steps:
Step a: drying oil removing
Putting a workpiece into a high-temperature oil removal tank, closing a tank door of the high-temperature oil removal tank, starting equipment, setting the drying temperature to be 400 ℃, setting the holding time to be 3 hours, and starting heating; after the workpiece is heated to 400 ℃, the oil on the surface of the workpiece can be carbonized into dregs and oil smoke, so that the workpiece A after oil removal is obtained, and the oil smoke generated during oil removal is discharged after being treated by a purifier;
Step b: rust removal
B, cooling the workpiece A in the step a to 30 ℃ in an idle mode, carrying the workpiece A into a shot blasting machine, setting the injection pressure to be 0.5MPa by adopting 4Kg of 46-mesh first-grade brown fused alumina, and then carrying out shot blasting on the workpiece; conveying the shot-blasted workpiece A to a sand blasting machine for sand blasting process treatment to obtain a workpiece B; collecting dust generated during shot blasting and sand blasting by a dust removal device;
Step c: zincizing
Placing the workpiece B in the step B into a furnace pipe of a zincizing furnace, and adding zincizing powder, wherein the zincizing powder comprises the following components in percentage by mass: greater than or equal to 34% of metallic zinc, less than or equal to 0.2% of Pb, less than or equal to 0.2% of Fe, less than or equal to 0.0005% of As, less than or equal to 0.2% of Cd, greater than or equal to 65% of alumina, less than or equal to 0.06% of SiO2, less than or equal to 0.03% of Fe2O3, less than or equal to 0.30% of Na2O and proper amount of water; setting the heating temperature of the zincizing furnace to be 400 ℃, setting the pressure to be less than 0.05MPa, and setting the heating time according to the zincizing thickness of the workpiece; after heating, moving the furnace pipe out of the heating furnace to obtain a workpiece C;
Step d: ash removing cooling
C, cooling the workpiece C placed in the furnace pipe in the step C to 100 ℃ by adopting a fan or naturally cooling, and then hoisting the furnace pipe by using a crane and placing the furnace pipe on a separation dust remover for dust removal to obtain a workpiece D;
Step e: code spraying box
And D, carrying out code spraying and boxing on the workpiece D in the step D.
9. Zincating method according to claim 8, characterized in that: in the step c, when the pressure of the furnace pipe is more than 0.05MPa, the zinc impregnation furnace automatically alarms and closes, and the zinc impregnation furnace automatically opens again after the temperature and the pressure are reduced.
10. Zincating method according to claim 8 or 9, characterized in that: performing ultrasonic oil removal before the step a, specifically: adding degreasing and oil removing powder and water into ultrasonic oil removing equipment according to the mass ratio of 1:30, wherein the water level does not exceed 2/3 of a water tank; the coupling is moved into the iron material frame, the iron material frame is placed neatly and stacked firmly, the material frame is hung into a water tank of ultrasonic oil removal equipment by using a travelling crane, the material frame is taken out after being soaked for 3 minutes, and then the material frame is washed for 2 minutes by using clean water and dried by using compressed air.
CN201910983596.4A 2019-10-16 2019-10-16 Zinc impregnation system and zinc impregnation method Active CN110541143B (en)

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CN111485193A (en) * 2020-05-13 2020-08-04 杭州兴靼德科技有限公司 Prevent raise dust zinc infiltration stove
CN111941290A (en) * 2020-07-24 2020-11-17 绍兴电力设备有限公司 Galvanizing process for steel

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CN204727939U (en) * 2015-06-13 2015-10-28 青海中恒金属材料科技有限公司 A kind of zincizing device of workpiece
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