CN112757168B - High-speed kinetic energy microparticle composite shot blasting surface strengthening process - Google Patents
High-speed kinetic energy microparticle composite shot blasting surface strengthening process Download PDFInfo
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- CN112757168B CN112757168B CN202011517295.1A CN202011517295A CN112757168B CN 112757168 B CN112757168 B CN 112757168B CN 202011517295 A CN202011517295 A CN 202011517295A CN 112757168 B CN112757168 B CN 112757168B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
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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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
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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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/80—After-treatment
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- Organic Chemistry (AREA)
- Cleaning In General (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a high-speed kinetic energy microparticle composite shot blasting surface strengthening process, which comprises the following steps: the method comprises the steps of shot blasting box installation, shot storage mechanism installation, dust removal mechanism installation, air supply mechanism installation and workpiece shot blasting reinforcement. The shot blasting surface strengthening process has simple steps, the workpiece is subjected to heating nitriding treatment to form compressive stress, and shot blasting treatment is performed by matching with micro-particle shots, so that the service life of the workpiece is greatly prolonged, the cost is saved, the defect of the sawtooth-shaped edge of the workpiece caused by medium fracturing is avoided, and meanwhile, dust removal treatment can be performed on generated waste gas and dust, so that the environment is protected.
Description
Technical Field
The invention relates to a surface strengthening process of high-speed kinetic energy microparticle composite shot blasting.
Background
Shot peening is a surface strengthening process widely used in factories, i.e., a cold working process in which shot particles are used to bombard the surface of a workpiece and residual compressive stress is implanted to improve the fatigue strength of the workpiece. The method is widely used for improving the mechanical strength, the wear resistance, the fatigue resistance, the corrosion resistance and the like of the parts.
In the shot blasting treatment in the prior art, steel shots, glass shots and ceramic shots are sprayed on the surface of a part to enable the part to generate plastic deformation so as to form a strengthening layer with a certain thickness, and high residual stress is formed in the strengthening layer, so that the part is easy to break.
Disclosure of Invention
The invention aims to provide a technical scheme of a high-speed kinetic energy microparticle composite shot blasting surface strengthening process aiming at the defects in the prior art, the workpiece is subjected to heating and nitriding treatment to form compressive stress, and then shot blasting treatment is performed by matching with microparticle shots, so that the service life of the workpiece is greatly prolonged, the cost is saved, the defect of saw-toothed edges of the workpiece caused by medium fracturing is avoided, and meanwhile, dust removal treatment can be performed on generated waste gas and dust, so that the environment is protected.
In order to solve the technical problem, the invention adopts the following technical scheme:
a high-speed kinetic energy micro-particle composite shot blasting surface strengthening process is characterized by comprising the following steps:
1) shot blasting box installation
a. Firstly, determining the sizes of a shot blasting box and a table board according to design requirements, processing the corresponding shot blasting box and the corresponding table board, wherein the upper part of the shot blasting box is of a cylindrical structure, the lower part of the shot blasting box is of an inverted cone structure, polishing is carried out along the surface of the shot blasting box, a workpiece taking and placing opening is formed in the shot blasting box, a corresponding protective door is processed according to the size of the workpiece taking and placing opening, the protective door is rotatably connected to the workpiece taking and placing opening and can be made of transparent glass, and the protective door not only can play a protective role, but also is convenient for observing the processing condition of a workpiece;
b. Then fixedly mounting the processed shot blasting box at a set position of the bedplate to be fixed, enabling the cylindrical structure to be positioned above the bedplate, enabling the inverted conical structure to be positioned below the bedplate, mounting a lower clamp and a third motor along the inner side of the inverted conical structure through a support table, enabling the third motor to be positioned at the inner side of the support table, enabling the lower clamp to be rotatably connected with the third motor and positioned above the support table, the design of the structure can lead the shot after the shot blasting to fall downwards under the action of gravity, thereby being convenient for uniform collection, improving the recycling efficiency of the shot, the stability and the reliability of the installation of the lower clamp and the third motor can be improved through the supporting frame, the third motor drives the lower clamp to rotate, the clamped workpiece can be driven to synchronously rotate, the shot blasting area is increased, and meanwhile, the support table can play a role in protecting the third motor, so that the service life of the third motor is prolonged;
c. then, an upper clamp matched with the lower clamp is selected according to the size of the lower clamp, the upper clamp is connected with a fixed rod through a telescopic rod, the top end of the fixed rod is connected with a first motor, the first motor is fixedly installed at the center of the top surface of the shot blasting box, the height position of the upper clamp can be adjusted by moving the telescopic rod, clamping and positioning of workpieces with different sizes are met, the first motor can drive the upper clamp to rotate, the workpieces can be driven to rotate, through the design of the first motor and a third motor, a single motor can be adopted to rotate the workpieces, and the other motor plays a standby role;
d. Two groups of lifting mechanisms are manufactured according to the size of the shot blasting box, the two groups of lifting mechanisms are symmetrically arranged in the shot blasting box, then the corresponding shot blasting mechanisms are manufactured, the shot blasting mechanisms are arranged on the lifting mechanisms through a horizontal boosting assembly, the shot blasting mechanisms can be driven to move up and down through the design of the lifting assemblies, the height positions of the shot blasting mechanisms are adjusted, the requirement of shot blasting processing on different height positions of a workpiece is met, the shot blasting area is increased, the horizontal boosting assembly can adjust the distance between the shot blasting mechanisms and the workpiece, and the use is flexible and convenient;
e. finally, two shot pre-storage boxes are symmetrically installed along the top surface of the shot blasting box, the shot pre-storage boxes are connected with the corresponding shot blasting mechanisms through second shot conveying pipes, the shots to be used can be pre-stored through the shot pre-storage boxes, the influence on the quality of shot blasting caused by discontinuous shot supply in the shot blasting process is prevented, and the shots in the shot pre-storage boxes are conveyed to the shot blasting mechanisms through the second shot conveying pipes and do not influence each other;
2) installation of mechanism is stored to shot
a. Firstly, determining the size of a pill storage box according to design requirements, processing the corresponding pill storage box, vertically installing a baffle plate along the top of the inner side of the pill storage box, and through the design of the baffle plate, stopping the pills conveyed into the pill storage box through a pill return pipe without influencing the normal conveying of the first pill conveying pipe to the pills;
b. Then fixedly mounting the processed pill storage box on a set position of a bedplate, selecting a first pill conveying pipe and two shunt pipes with proper sizes according to the space between the pill storage box and the two pill pre-storage boxes, vertically inserting one end of the first pill conveying pipe into the pill storage box, respectively connecting the other end of the first pill conveying pipe with the two shunt pipes, communicating the two shunt pipes with the corresponding pill pre-storage boxes, simultaneously mounting a first air pump on the first pill conveying pipe, generating air pressure through the first air pump, conveying pills in the pill storage box to the shunt pipes through the first pill conveying pipe, and then conveying the pills to the corresponding pill pre-storage boxes through the shunt pipes;
c. selecting a shot backflow pipe with a proper size according to the space between the shot storage box and the shot blasting box, connecting one end of the shot backflow pipe with the bottom of the shot blasting box, connecting the other end of the shot backflow pipe with the upper part of the shot storage box, arranging a second air pump horizontally along the shot backflow pipe, generating air pressure through the second air pump, and conveying the shots at the bottom of the shot blasting box into the shot storage box through the shot backflow pipe to realize the recycling of the shots;
3) dust removal mechanism installation
a. Firstly, determining the size of a dust removal box according to design requirements, processing the corresponding dust removal box, polishing the surface of the dust removal box, installing a liquid level sensor at a set position along the inner side of the dust removal box, installing a water inlet pipe and a water outlet pipe along the side surface of the dust removal box, enabling the water inlet pipe to be positioned above the water outlet pipe, respectively installing a one-way electromagnetic valve on the water inlet pipe and the water outlet pipe, injecting liquid into the dust removal box through the water inlet pipe, improving the mixing of dust and liquid, discharging through the water outlet pipe, preventing the dust from polluting the environment, detecting the liquid level in the dust removal box through the liquid level sensor, and stopping injecting the liquid when the liquid level reaches the position of the liquid level sensor;
b. Then fixedly mounting the processed dust removing box at a set position of the bedplate, and selecting a dust removing pipe with a proper size according to the distance between the dust removing box and the shot blasting box;
c. one end of the dust removal pipe is inserted into the dust removal box, the other end of the dust removal pipe is connected to the top of the shot blasting box, a filter screen is arranged on the dust removal pipe close to one end of the shot blasting box, a fan is arranged on the dust removal pipe, wind power is generated through the fan, dust in the shot blasting box can be adsorbed into the dust removal box, and shot can be prevented from entering the dust removal pipe through the filter screen;
4) gas supply mechanism installation
Processing a corresponding air supply box according to design requirements, installing an air supply pipeline and an electric control pipeline in the air supply box, connecting the air supply pipeline with a first air pump, a second air pump, a horizontal boosting assembly, a shot pre-storage box and a shot blasting mechanism, electrically connecting the electric control pipeline with a first motor, a third motor, a lifting assembly, the shot blasting mechanism, a fan and an electromagnetic valve, meanwhile, the nitrogen conveying device is arranged along the top surface of the bedplate, and through the design of the air supply box, each part can be independently supplied with air according to the actual requirement of shot blasting, so that the stability and the reliability of the whole shot blasting are improved, meanwhile, the electric control pipeline can control the work of each part, ensure the smooth processing of shot blasting, the design of the nitrogen conveying device can enable the workpiece to form pressure stress while heating and nitriding, and the kinetic energy of shot blasting treatment is improved due to the temperature effect;
5) Workpiece shot peening
a. Firstly, opening a protective door, placing a workpiece to be machined on a lower clamp, fixing the bottom of the workpiece through the lower clamp, manually adjusting a telescopic rod to enable an upper clamp to descend to the top of the workpiece, fixing the top of the workpiece through the upper clamp, starting a first motor or a third motor, and observing the rotation condition of the workpiece, wherein the workpiece is made of medium carbon alloy steel;
b. then opening a cover plate on the pellet storage box, filling a corresponding number of micro-particle pellets into the pellet storage box, closing the cover plate, simultaneously opening an electromagnetic valve of an upper water inlet pipe of the dust removal box, injecting liquid into the dust removal box, and closing the electromagnetic valve after the liquid in the dust removal box reaches the height position of the liquid level sensor;
c. continuously introducing nitrogen at 300-600 ℃ into the shot blasting box through a nitrogen conveying device, so that the workpiece forms compressive stress while being heated and nitrided;
d. then, the first air pump is controlled to work through the air supply box, the first shot conveying pipe in the shot storage box is conveyed into each shot pre-storage box through the flow dividing pipe, the air pressure in the shot pre-storage box is controlled through the air supply box to convey micro-particle shots to the shot blasting mechanism through the second shot conveying pipe, the shot blasting mechanism is used for carrying out continuous shot blasting on the workpiece, meanwhile, the lifting mechanism and the horizontal boosting assembly drive the shot blasting mechanism to move up and down and move horizontally, and the first motor or the second motor drives the workpiece to rotate so as to realize shot blasting on the workpiece;
e. Starting a fan during shot blasting, conveying dust in a shot blasting box into the dust removing box through a dust removing pipe, enabling shot-blasted shots to fall into the bottom of the shot blasting box, starting a second air pump, and conveying micro-particle shots in the shot blasting box into a shot storage box through a shot return pipe;
f. and finally, closing the shot blasting mechanism, the first motor and the second motor, taking out the machined workpiece, and performing shot blasting on the next workpiece.
The shot blasting surface strengthening process has simple steps, the workpiece is subjected to heating nitriding treatment firstly to form compressive stress, and then shot blasting treatment is performed by matching with the micro-particle shot, so that the service life of the workpiece is greatly prolonged, the cost is saved, the defect of saw-toothed edges of the workpiece caused by medium fracturing is avoided, and meanwhile, the generated waste gas and dust can be subjected to dust removal treatment to protect the environment.
Further, the brace table includes the backup pad, and a support, fixed plate and rotor plate, the support symmetry is installed on the bottom surface of backup pad, the fixed plate is installed between two adjacent supports, be provided with the bottom plate between four supports, the bottom plate is located the below of backup pad, the rotor plate rotates to be connected between two supports of one side, the through-hole has been seted up in the backup pad, can improve joint strength and stability between backup pad and the peening case through the support, further improve the stability of work piece clamping, improve the quality of peening, design through the rotor plate, the maintenance is dismantled in the installation of the third motor of being convenient for, fixed plate and bottom plate can play the effect of protection third motor.
Further, elevating system includes the lifter plate, first screw rod, guide arm and second motor, the symmetry is provided with the mounting panel on the medial surface of peening case, first screw rod and guide arm are installed between two upper and lower mounting panels, the second motor is connected on the top of first screw rod, and be located the top surface of peening case, the lifter plate cup joints on first screw rod and guide arm, it is rotatory to drive first screw rod through the second motor, and then can drive the lifter plate and reciprocate, the guide arm has improved the stability and the reliability that the lifter plate reciprocated.
Further, horizontal boosting subassembly includes cylinder, boosting piece and piston rod, and the bottom of lifter plate is located to the cylinder, and peening mechanism passes through the boosting piece and connects the lifter plate, and the boosting piece passes through the piston rod and connects the cylinder, drives the piston rod through the cylinder and promotes boosting piece horizontal migration, and then can drive peening mechanism horizontal migration, adjusts the interval between peening mechanism and the work piece.
Further, peening mechanism includes the base plate, the peening accelerating rod, angle adjusting subassembly and promotion subassembly, the peening accelerating rod passes through locating piece connection angle adjusting subassembly, angle adjusting subassembly locates on the base plate, it rotates to promote the subassembly drive peening accelerating rod, the end connection of peening accelerating rod has the shower nozzle, be provided with the feed inlet on the top surface of peening accelerating rod, feed inlet and second shot conveyer pipe phase-match, be provided with gas-supply pipe and spacing on the side of peening accelerating rod, the shot of shot prestore incasement is in second shot conveyer pipe input feed inlet, the gas supply case passes through the gas-supply pipe and improves the atmospheric pressure in the shot accelerating rod, make the shot spout to the work piece surface through the shower nozzle fast, the promotion subassembly can drive the shot accelerating rod and rotate to required injection angle position under angle adjusting subassembly's effect.
Further, angle adjusting part includes the revolving stage, first guide pulley and second guide pulley, be provided with the guide slot on the revolving stage, pass the guide slot through fastening screw, realize the fixed connection between revolving stage and the base plate, first guide pulley passes through the grip block and connects the base plate, first guide pulley supports the outside of revolving stage, the base plate is connected to the second guide pulley, and the second guide pulley supports the inboard of revolving stage, after shot accelerating rod rotates to required angle position under the effect of revolving stage, can fix through fastening screw, first guide pulley and second guide pulley can play spacing effect.
Further, promote the subassembly and include fourth motor, turning block, second screw rod and boosting piece, the fourth motor passes through the turning block and rotates connection substrates, the motor is connected to the second screw rod, on the top surface of peening accelerating rod is located to the boosting piece, the boosting piece cup joints on the second screw rod, drives the second screw rod through the fourth motor and rotates, and then can drive boosting piece and shot accelerating rod and rotate, the turning block can realize carrying out the compensation of displacement and angle to the fourth motor.
Further, nitrogen gas conveyor includes nitrogen gas bin, nitrogen gas conveyer pipe and heater, and on the platen was located to the nitrogen gas bin, the nitrogen gas bin passed through nitrogen gas duct connections peening case, was provided with the heater on the nitrogen gas conveyer pipe, carries nitrogen gas to the heater through the nitrogen gas bin, and nitrogen gas after the heating again through nitrogen gas conveyer pipe input peening incasement, can realize heating the nitriding treatment to the work piece, improves the effect and the quality of peening.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the invention carries out heating and nitriding treatment on the workpiece to form compressive stress, and then carries out shot blasting treatment by matching with the micro-particle shots, thereby greatly prolonging the service life of the workpiece, saving the cost, avoiding the defect of the sawtooth-shaped edge of the workpiece caused by medium fracturing, and simultaneously carrying out dust removal treatment on the generated waste gas and dust to protect the environment.
Description of the drawings:
the invention is further described below with reference to the accompanying drawings:
FIG. 1 is a diagram illustrating the effect of shot peening equipment in the surface peening process of high-speed kinetic energy micro-particle composite shot peening according to the present invention;
FIG. 2 is a schematic view showing the structure of a shot-blasting box according to the present invention;
FIG. 3 is a schematic view of the structure of the blasting mechanism according to the present invention;
FIG. 4 is a schematic view of the connection between the shot-peening acceleration lever and the positioning block in the present invention;
FIG. 5 is a schematic view of a support stage according to the present invention;
FIG. 6 is a schematic view of the structure of the storage case for pellets in the present invention;
FIG. 7 is a schematic view of the dust box of the present invention.
In the figure: 1-a bedplate; 2-shot blasting box; 3-a pellet storage bin; 4-dust removal box; 5-a gas supply box; 6-a protective door; 7-a first motor; 8-a second motor; 9-pill pre-storage box; 10-a first projectile delivery tube; 11-shunt tubes; 12-a first air pump; 13-shot reflux pipe; 14-a second air pump; 15-a dust removal pipe; 17-upper clamp; 18-a fixation rod; 19-a telescopic rod; 20-a shot blasting mechanism; 21-a lifting plate; 22-a cylinder; 23-a second projectile delivery tube; 24-a first screw; 25-a guide rod; 26-lower clamp; 27-a support table; 28-a third motor; 29-a substrate; 30-projectile acceleration lever; 31-a spray head; 32-a feed inlet; 33-positioning blocks; 34-a rotating table; 35-a guide groove; 36-a fastening screw; 37-a boosting block; 38-a turning block; 39-a fourth motor; 40-a second screw; 41-gas transmission pipe; 42-a clamping block; 43-a first guide wheel; 44-a second guide wheel; 45-limit strip; 46-a support plate; 47-a scaffold; 48-a fixed plate; 49-rotating plate; 50-a baffle; 51-a liquid level sensor; 52-water inlet pipe; 53-water outlet pipe; 54-nitrogen storage tank; 55-nitrogen gas conveying pipe; 56-heater.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims, and in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
As shown in fig. 1 to 7, the process for surface strengthening of high-speed kinetic energy micro-particle composite shot blasting according to the present invention comprises the following steps:
1) Shot blasting box installation
a. Firstly, determining the sizes of a shot blasting box 2 and a platen 1 according to design requirements, processing the corresponding shot blasting box 2 and the corresponding platen 1, wherein the upper part of the shot blasting box 2 is of a cylindrical structure, the lower part of the shot blasting box 2 is of an inverted cone structure, polishing is carried out along the surface of the shot blasting box 2, a workpiece taking and placing opening is formed in the shot blasting box 2, a corresponding protective door 6 is processed according to the size of the workpiece taking and placing opening, the protective door 6 is rotatably connected to the workpiece taking and placing opening, the protective door 6 can be made of transparent glass, the protective door 6 can play a protective role and is convenient for observing the processing condition of the workpiece;
b. then the processed shot blasting box 2 is fixedly arranged at a set position of the bedplate 1, so that the cylindrical structure is positioned above the bedplate 1, the inverted cone structure is positioned below the bedplate 1, a lower clamp 26 and a third motor 28 are arranged along the inner side of the inverted cone structure through a support platform 27, the third motor 28 is positioned at the inner side of the support platform 27, the lower clamp 26 is rotatably connected with the third motor 28 and positioned above the support platform 27, the structure can ensure that shot after shot blasting is finished falls downwards under the action of gravity, so that uniform collection is facilitated, the recycling efficiency of the shot is improved, the stability and reliability of the installation of the lower clamp 26 and the third motor 28 can be improved through the support frame, the third motor 28 drives the lower clamp 26 to rotate, further, the clamped workpiece can be driven to rotate synchronously, the shot blasting area is improved, and the support platform 27 can play a role of protecting the third motor 28, extending the useful life of the third motor 28;
The supporting platform 27 comprises a supporting plate 46, brackets 47, a fixing plate 48 and a rotating plate 49, the brackets 47 are symmetrically installed on the bottom surface of the supporting plate 46, the fixing plate 48 is installed between two adjacent brackets 47, a bottom plate is arranged between the four brackets 47 and is positioned below the supporting plate 46, the rotating plate 49 is rotatably connected between the two brackets 47 on one side, a through hole is formed in the supporting plate 46, the connecting strength and the stability between the supporting plate 46 and the shot blasting box 2 can be improved through the brackets 47, the stability of workpiece clamping is further improved, the quality of shot blasting is improved, through the design of the rotating plate 49, the third motor 28 can be conveniently installed, disassembled and maintained, and the fixing plate 48 and the bottom plate can play a role in protecting the third motor 28.
c. Then, an upper clamp 17 matched with the lower clamp 26 is selected according to the size of the lower clamp, the upper clamp 17 is connected with a fixed rod 18 through an expansion link 19, the top end of the fixed rod 18 is connected with a first motor 7, the first motor 7 is fixedly installed at the center of the top surface of the shot blasting box 2, the height position of the upper clamp 17 can be adjusted by moving the expansion link 19, clamping and positioning of workpieces with different sizes are met, the first motor 7 can drive the upper clamp 17 to rotate, further, the workpieces can be driven to rotate, through the design of the first motor 7 and a third motor 28, a single motor can be adopted to rotate the workpieces, and the other motor plays a standby role;
d. Two groups of lifting mechanisms are manufactured according to the size of the shot blasting box 2, the two groups of lifting mechanisms are symmetrically arranged in the shot blasting box 2, then the corresponding shot blasting mechanisms 20 are manufactured, the shot blasting mechanisms 20 are arranged on the lifting mechanisms through horizontal boosting components, the shot blasting mechanisms 20 can be driven to move up and down through the design of the lifting components, the height positions of the shot blasting mechanisms 20 are adjusted, the requirement of shot blasting processing on different height positions of workpieces is met, the shot blasting area is increased, the horizontal boosting components can adjust the distance between the shot blasting mechanisms 20 and the workpieces, and the use is flexible and convenient;
elevating system includes lifter plate 21, first screw rod 24, guide arm 25 and second motor 8, the symmetry is provided with the mounting panel on the medial surface of peening case 2, first screw rod 24 and guide arm 25 are installed between two upper and lower mounting panels, second motor 8 is connected on the top of first screw rod 24, and be located peening case 2's top surface, lifter plate 21 cup joints on first screw rod 24 and guide arm 25, it is rotatory to drive first screw rod 24 through second motor 8, and then can drive lifter plate 21 and reciprocate, guide arm 25 has improved the stability and the reliability that lifter plate 21 reciprocated.
The horizontal boosting assembly comprises an air cylinder 22, a boosting block 37 and a piston rod, the air cylinder 22 is arranged at the bottom of the lifting plate 21, the shot blasting mechanism 20 is connected with the lifting plate 21 through the boosting block 37, the boosting block 37 is connected with the air cylinder 22 through the piston rod, the piston rod is driven by the air cylinder 22 to push the boosting block 37 to move horizontally, then the shot blasting mechanism 20 can be driven to move horizontally, and the distance between the shot blasting mechanism 20 and a workpiece is adjusted.
e. Finally, two shot pre-storage boxes 9 are symmetrically arranged along the top surface of the shot blasting box 2, the shot pre-storage boxes 9 are connected with the corresponding shot blasting mechanisms 20 through second shot conveying pipes 23, shots to be used can be pre-stored through the shot pre-storage boxes 9, the influence on the shot blasting quality caused by discontinuous shot supply in the shot blasting process is prevented, and the shots in the shot pre-storage boxes 9 are conveyed to the shot blasting mechanisms 20 through the second shot conveying pipes 23 and do not influence each other;
The angle adjusting assembly comprises a rotating table 34, a first guide wheel 43 and a second guide wheel 44, wherein a guide groove 35 is formed in the rotating table 34, a fastening screw 36 penetrates through the guide groove 35 to realize fixed connection between the rotating table 34 and the base plate 29, the first guide wheel 43 is connected with the base plate 29 through a clamping block 42, the first guide wheel 43 abuts against the outer side of the rotating table 34, the second guide wheel 44 is connected with the base plate 29, the second guide wheel 44 abuts against the inner side of the rotating table 34, after the shot accelerating rod 30 rotates to a required angle position under the action of the rotating table 34, the shot accelerating rod can be fixed through the fastening screw 36, and the first guide wheel 43 and the second guide wheel 44 can play a limiting role.
The pushing assembly comprises a fourth motor 39, a rotating block 38, a second screw rod 40 and a boosting block 37, the fourth motor 39 rotates the connecting substrate 29 through the rotating block 38, the second screw rod 40 is connected with the motor, the boosting block 37 is arranged on the top surface of the shot blasting accelerating rod, the boosting block 37 is sleeved on the second screw rod 40 and drives the second screw rod 40 to rotate through the fourth motor 39, the boosting block 37 and the shot blasting accelerating rod 30 can be driven to rotate, and the rotating block 38 can compensate the displacement and the angle of the fourth motor 39.
2) Installation of mechanism is stored to shot
a. Firstly, determining the size of a shot storage box 3 according to design requirements, processing the corresponding shot storage box 3, vertically installing a baffle 50 along the top of the inner side of the shot storage box 3, and blocking the shots conveyed into the shot storage box 3 through a shot return pipe 13 by the design of the baffle 50 without influencing the normal conveying of the shots by a first shot conveying pipe 10;
b. Then fixedly mounting the processed pill storage box 3 on a set position of a platen 1, selecting a first pill conveying pipe 10 and two shunt pipes 11 with proper sizes according to the space between the pill storage box 3 and the two pill pre-storage boxes 9, vertically inserting one end of the first pill conveying pipe 10 into the pill storage box 3, respectively connecting the other end of the first pill conveying pipe 10 with the two shunt pipes 11, communicating the two shunt pipes 11 with the corresponding pill pre-storage boxes 9, simultaneously mounting a first air pump 12 on the first pill conveying pipe 10, generating air pressure through the first air pump 12, conveying pills in the pill storage box 3 to the shunt pipes 11 through the first pill conveying pipe 10, and then conveying the pills into the corresponding pill pre-storage boxes 9 through the shunt pipes 11;
c. selecting a shot return pipe 13 with a proper size according to the space between the shot storage box 3 and the shot blasting box 2, connecting one end of the shot return pipe 13 with the bottom of the shot blasting box 2, connecting the other end of the shot return pipe 13 with the upper part of the shot storage box 3, horizontally arranging an outlet, installing a second air pump 14 along the shot return pipe 13, generating air pressure through the second air pump 14, and conveying the shots at the bottom of the shot blasting box 2 into the shot storage box 3 through the shot return pipe 13 to realize the recycling of the shots;
3) Dust removal mechanism installation
a. Firstly, determining the size of a dust removal box 4 according to design requirements, processing the corresponding dust removal box 4, polishing the surface of the dust removal box 4, installing a liquid level sensor 51 at a set position along the inner side of the dust removal box 4, installing a water inlet pipe 52 and a water outlet pipe 53 along the side surface of the dust removal box 4, enabling the water inlet pipe 52 to be positioned above the water outlet pipe 53, installing a one-way electromagnetic valve on the water inlet pipe 52 and the water outlet pipe 53 respectively, injecting liquid into the dust removal box 4 through the water inlet pipe 52, improving the mixing of dust and liquid, and discharging through the water outlet pipe 53 to prevent the environment from being polluted by the dust, enabling the liquid level sensor 51 to detect the liquid level in the dust removal box 4, and stopping injecting the liquid when the liquid level reaches the position of the liquid level sensor 51;
b. then fixedly installing the processed dust removing box 4 at a set position of the bedplate 1, and selecting a dust removing pipe 15 with a proper size according to the space between the dust removing box 4 and the shot blasting box 2;
c. then, inserting one end of a dust removal pipe 15 into the dust removal box 4, connecting the other end of the dust removal pipe 15 to the top of the shot blasting box 2, installing a filter screen at one end, close to the shot blasting box 2, of the dust removal pipe 15, installing a fan on the dust removal pipe 15, generating wind power through the fan, absorbing dust in the shot blasting box 2 into the dust removal box 4, and preventing shot from entering the dust removal pipe 15 through the filter screen;
4) Gas supply mechanism installation
The corresponding air supply box 5 is processed according to the design requirements, an air supply pipeline and an electric control pipeline are arranged in the air supply box 5, the air supply pipeline is electrically connected with a first air pump 12, a second air pump 14, a horizontal boosting assembly, a shot pre-storage box 9 and a shot blasting mechanism 20, the electric control pipeline is electrically connected with a first motor 7, a third motor 28, a lifting assembly, the shot blasting mechanism 20, a fan and an electromagnetic valve, meanwhile, a nitrogen conveying device is arranged along the top surface of the bedplate 1, through the design of the air supply box 5, each part can be independently supplied with air according to the actual shot blasting requirement, the stability and the reliability of the whole shot blasting are improved, meanwhile, each part can be controlled to work through the electric control pipeline, the shot blasting is ensured to be smoothly carried out, the workpiece can form pressure stress while being heated and nitrided through the design of the nitrogen conveying device, due to the effect of temperature, the kinetic energy of shot blasting is improved;
nitrogen gas conveyor includes nitrogen gas bin 54, nitrogen gas conveyer pipe 55 and heater 56, and nitrogen gas bin 54 is located on platen 1, and nitrogen gas bin 54 passes through nitrogen gas conveyer pipe 55 and connects peening case 2, is provided with heater 56 on the nitrogen gas conveyer pipe 55, carries nitrogen gas to heater 56 through nitrogen gas bin 54, and nitrogen gas after the heating again through nitrogen gas conveyer pipe 55 input peening case 2 in, can realize heating the nitriding treatment to the work piece, improve the effect and the quality of peening.
5) Workpiece shot peening
a. Firstly, opening a protective door 6, placing a workpiece to be processed on a lower clamp 26, fixing the bottom of the workpiece through the lower clamp 26, manually adjusting a telescopic rod 19 to enable an upper clamp 17 to descend to the top of the workpiece, fixing the top of the workpiece through the upper clamp 17, starting a first motor 7 or a third motor 28, and observing the rotation condition of the workpiece, wherein the workpiece is made of medium carbon alloy steel, and the micro-particle shot is high alloy shot of iron, boron and silicon;
b. then, opening a cover plate on the pellet storage box 3, filling a corresponding number of micro-particle pellets into the pellet storage box 3, closing the cover plate, simultaneously opening an electromagnetic valve of an upper water inlet pipe 52 of the dust removal box 4, injecting liquid into the dust removal box 4, and closing the electromagnetic valve after the liquid in the dust removal box 4 reaches the height position of the liquid level sensor 51;
c. continuously introducing nitrogen gas at 300-600 ℃ into the shot blasting box 2 through a nitrogen gas conveying device, so that the workpiece forms compressive stress while being heated and nitrided;
d. then, the first air pump 12 is controlled to work through the air supply box 5, the first shot conveying pipe 10 in the shot storage box 3 is conveyed into each shot pre-storage box 9 through the shunt pipe 11, the air supply box 5 controls the air pressure in the shot pre-storage boxes 9 to convey micro-particle shots to the shot blasting mechanism 20 through the second shot conveying pipe 23, the workpiece is subjected to continuous shot blasting through the shot blasting mechanism 20, meanwhile, the lifting mechanism and the horizontal boosting assembly drive the shot blasting mechanism 20 to move up and down and move horizontally, and the first motor 7 or the second motor 8 drives the workpiece to rotate to achieve shot blasting of the workpiece;
e. Starting a fan during shot blasting, inputting dust in the shot blasting box 2 into the dust removing box 4 through a dust removing pipe 15, enabling shot after shot blasting to fall into the bottom of the shot blasting box 2, starting a second air pump 14, and conveying micro-particle shots in the shot blasting box 2 into a shot storage box 3 through a shot return pipe 13;
f. and finally, closing the shot blasting mechanism 20, the first motor 7 and the second motor 8, taking out the machined workpiece, and performing shot blasting on the next workpiece.
The shot blasting surface strengthening process has simple steps, the workpiece is subjected to heating nitriding treatment firstly to form compressive stress, and then shot blasting treatment is performed by matching with the micro-particle shot, so that the service life of the workpiece is greatly prolonged, the cost is saved, the defect of saw-toothed edges of the workpiece caused by medium fracturing is avoided, and meanwhile, the generated waste gas and dust can be subjected to dust removal treatment to protect the environment.
The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are all covered by the scope of the present invention.
Claims (4)
1. A high-speed kinetic energy micro-particle composite shot blasting surface strengthening process is characterized by comprising the following steps:
1) Shot blasting box installation
a. Firstly, determining the sizes of a shot blasting box and a table plate according to design requirements, processing the corresponding shot blasting box and the table plate, wherein the upper part of the shot blasting box is of a cylindrical structure, the lower part of the shot blasting box is of an inverted conical structure, polishing the surface of the shot blasting box, arranging a workpiece taking and placing opening on the shot blasting box, processing a corresponding protective door according to the size of the workpiece taking and placing opening, and rotatably connecting the protective door to the workpiece taking and placing opening;
b. then fixedly installing the processed shot blasting box at a set position of the bedplate to be fixed, enabling the cylindrical structure to be located above the bedplate, enabling the inverted conical structure to be located below the bedplate, installing a lower clamp and a third motor along the inner side of the inverted conical structure through a supporting platform, enabling the third motor to be located on the inner side of the supporting platform, and enabling the lower clamp to be rotationally connected with the third motor and located above the supporting platform; the supporting table comprises supporting plates, supports, fixing plates and rotating plates, the supports are symmetrically arranged on the bottom surface of the supporting plate, the fixing plates are arranged between every two adjacent supports, a bottom plate is arranged between every two adjacent supports, the bottom plate is located below the supporting plates, the rotating plates are rotatably connected between the two supports on one side, and through holes are formed in the supporting plates;
c. Selecting an upper clamp matched with the lower clamp according to the size of the lower clamp, connecting the upper clamp with a fixed rod through a telescopic rod, connecting the top end of the fixed rod with a first motor, and fixedly installing the first motor at the center of the top surface of the shot blasting box;
d. manufacturing two groups of lifting mechanisms according to the size of the shot blasting box, symmetrically installing the two groups of lifting mechanisms in the shot blasting box, manufacturing corresponding shot blasting mechanisms, and installing the shot blasting mechanisms on the lifting mechanisms through a horizontal boosting assembly; the lifting mechanism comprises a lifting plate, a first screw rod, a guide rod and a second motor, mounting plates are symmetrically arranged on the inner side surface of the shot blasting box, the first screw rod and the guide rod are mounted between the upper mounting plate and the lower mounting plate, the second motor is connected to the top end of the first screw rod and is positioned on the top surface of the shot blasting box, and the lifting plate is sleeved on the first screw rod and the guide rod; the horizontal boosting assembly comprises an air cylinder, a boosting block and a piston rod, the air cylinder is arranged at the bottom of the lifting plate, the shot blasting mechanism is connected with the lifting plate through the boosting block, and the boosting block is connected with the air cylinder through the piston rod;
e. finally, symmetrically installing two shot pre-storage boxes along the top surface of the shot blasting box, and connecting the shot pre-storage boxes with corresponding shot blasting mechanisms through second shot conveying pipes; the shot blasting mechanism comprises a substrate, a shot blasting accelerating rod, an angle adjusting assembly and a pushing assembly, the shot blasting accelerating rod is connected with the angle adjusting assembly through a positioning block, the angle adjusting assembly is arranged on the substrate, the pushing assembly drives the shot blasting accelerating rod to rotate, the end part of the shot blasting accelerating rod is connected with a spray head, a feed port is arranged on the top surface of the shot blasting accelerating rod, the feed port is matched with the second shot conveying pipe, and a gas pipe and a limiting strip are arranged on the side surface of the shot blasting accelerating rod;
2) Installation of projectile storage mechanism
a. Firstly, determining the size of a shot storage box according to design requirements, processing the corresponding shot storage box, and vertically installing a baffle plate along the top of the inner side of the shot storage box;
b. then fixedly mounting the processed pill storage box on a set position of a bedplate, selecting a first pill conveying pipe and two shunt pipes with proper sizes according to the space between the pill storage box and the two pill pre-storage boxes, vertically inserting one end of the first pill conveying pipe into the pill storage box, respectively connecting the other end of the first pill conveying pipe with the two shunt pipes, communicating the two shunt pipes with the corresponding pill pre-storage boxes, and simultaneously mounting a first air pump on the first pill conveying pipe;
c. selecting a shot backflow pipe with a proper size according to the space between the shot storage box and the shot blasting box, connecting one end of the shot backflow pipe with the bottom of the shot blasting box, connecting the other end of the shot backflow pipe with the upper part of the shot blasting box, arranging an outlet horizontally, and installing a second air pump along the shot backflow pipe;
3) dust removal mechanism installation
a. Firstly, determining the size of a dust removal box according to design requirements, processing the corresponding dust removal box, polishing the surface of the dust removal box, mounting a liquid level sensor at a set position along the inner side of the dust removal box, mounting a water inlet pipe and a water outlet pipe along the side surface of the dust removal box, enabling the water inlet pipe to be positioned above the water outlet pipe, and mounting a one-way electromagnetic valve on the water inlet pipe and the water outlet pipe respectively;
b. Then fixedly mounting the processed dust removing box at a set position of the bedplate, and selecting a dust removing pipe with a proper size according to the distance between the dust removing box and the shot blasting box;
c. inserting one end of the dust removing pipe into the dust removing box, connecting the other end of the dust removing pipe to the top of the shot blasting box, installing a filter screen at one end of the dust removing pipe close to the shot blasting box, and meanwhile, installing a filter screen on the dust removing pipe
Installing a fan;
4) gas supply mechanism installation
Processing a corresponding air supply box according to design requirements, installing an air supply pipeline and an electric control pipeline in the air supply box, connecting the air supply pipeline with a first air pump, a second air pump, a horizontal boosting assembly, a shot pre-storage box and a shot blasting mechanism, electrically connecting the electric control pipeline with a first motor, a third motor, a lifting assembly, the shot blasting mechanism, a fan and an electromagnetic valve, and meanwhile installing a nitrogen conveying device along the top surface of the bedplate;
5) workpiece shot peening
a. Firstly, opening a protective door, placing a workpiece to be processed on a lower clamp, fixing the bottom of the workpiece through the lower clamp, manually adjusting a telescopic rod to enable an upper clamp to descend to the top of the workpiece, fixing the top of the workpiece through the upper clamp, starting a first motor or a third motor, and observing the rotation condition of the workpiece;
b. Then opening a cover plate on the pellet storage box, filling a corresponding number of micro-particle pellets into the pellet storage box, closing the cover plate, simultaneously opening an electromagnetic valve of an upper water inlet pipe of the dust removal box, injecting liquid into the dust removal box, and closing the electromagnetic valve after the liquid in the dust removal box reaches the height position of the liquid level sensor;
c. continuously introducing nitrogen at 300-600 ℃ into the shot blasting box through a nitrogen conveying device;
d. then, the first air pump is controlled to work through the air supply box, the first shot conveying pipe in the shot storage box is conveyed into each shot pre-storage box through the flow dividing pipe, the air pressure in the shot pre-storage box is controlled through the air supply box to convey micro-particle shots to the shot blasting mechanism through the second shot conveying pipe, the shot blasting mechanism is used for carrying out continuous shot blasting on the workpiece, meanwhile, the lifting mechanism and the horizontal boosting assembly drive the shot blasting mechanism to move up and down and move horizontally, and the first motor or the second motor drives the workpiece to rotate so as to realize shot blasting on the workpiece;
e. starting a fan during shot blasting, conveying dust in a shot blasting box into the dust removal box through a dust removal pipe, enabling shot-blasted shots to fall into the bottom of the shot blasting box, starting a second air pump, and conveying micro-particle shots in the shot blasting box into a shot storage box through a shot return pipe;
f. And finally, closing the shot blasting mechanism, the first motor and the second motor, taking out the machined workpiece, and performing shot blasting on the next workpiece.
2. The surface peening process of claim 1, wherein the surface peening process comprises: the angle adjusting assembly comprises a rotating table, a first guide wheel and a second guide wheel, a guide groove is formed in the rotating table, a fastening screw penetrates through the guide groove to achieve fixed connection between the rotating table and the base plate, the first guide wheel is connected with the base plate through a clamping block, the first guide wheel abuts against the outer side of the rotating table, the second guide wheel is connected with the base plate, and the second guide wheel abuts against the inner side of the rotating table.
3. The surface peening process of claim 1, wherein the surface peening process comprises: the pushing assembly comprises a fourth motor, a rotating block, a second screw and a boosting block, the fourth motor is connected with the base plate through the rotating block in a rotating mode, the second screw is connected with the motor, the boosting block is arranged on the top face of the shot blasting accelerating rod, and the boosting block is sleeved on the second screw.
4. The surface peening process of claim 1, wherein the surface peening process comprises: the nitrogen conveying device comprises a nitrogen storage box, a nitrogen conveying pipe and a heater, wherein the nitrogen storage box is arranged on the bedplate and is connected with the shot blasting box through the nitrogen conveying pipe, and the heater is arranged on the nitrogen conveying pipe.
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| CN114378722B (en) * | 2022-01-10 | 2023-05-05 | 沈阳格瑞德泵业有限公司 | Shot blasting equipment for manufacturing water pump shell and using method thereof |
| CN114559375A (en) * | 2022-04-08 | 2022-05-31 | 中国石油大学(华东) | Shot blasting device for strengthening metal surface by impact of particle flow |
| CN116004952A (en) * | 2022-12-20 | 2023-04-25 | 华南理工大学 | Electric pulse auxiliary surface strengthening and morphology regulation collaborative manufacturing method and device |
| CN116061095B (en) * | 2023-03-13 | 2023-06-09 | 成都裕鸢航空智能制造股份有限公司 | Shot blasting device and shot blasting process |
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