CN114918837B - Cavitation water shot blasting device and method based on temperature alternation - Google Patents
Cavitation water shot blasting device and method based on temperature alternation Download PDFInfo
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- CN114918837B CN114918837B CN202210760551.2A CN202210760551A CN114918837B CN 114918837 B CN114918837 B CN 114918837B CN 202210760551 A CN202210760551 A CN 202210760551A CN 114918837 B CN114918837 B CN 114918837B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000005422 blasting Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 83
- 238000005192 partition Methods 0.000 claims abstract description 13
- 238000005728 strengthening Methods 0.000 claims abstract description 13
- 238000005480 shot peening Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000001802 infusion Methods 0.000 claims description 7
- 230000035939 shock Effects 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a cavitation water shot blasting device and a cavitation water shot blasting method based on temperature alternation in the field of part surface strengthening and processing and manufacturing, wherein the inside of a solution cavity is divided into a left cavity, a middle cavity and a right cavity by a partition plate, the bottom in the middle cavity is a workbench, and the upper part of the workbench is provided with a workpiece and a clamping element capable of clamping the workpiece; a nozzle with a spout facing the side wall of the workpiece is arranged on each baffle, and a quick heater is arranged on the inner side wall of the left cavity and the right cavity facing the nozzle; an electromagnetic door is arranged at the inlet of each nozzle, two electromagnetic doors are electrified, two rapid heaters are used for heating, the liquid pressure in the left cavity and the right cavity is increased, and high-pressure water passes through the corresponding nozzles to carry out shot peening strengthening on the side wall surface of the workpiece; according to the invention, the pressure in the solution cavity is continuously converted between high pressure and low pressure in a temperature alternating mode, and the cavitation water jet and the shock wave generated by high pressure water through the nozzle are utilized to carry out shot peening strengthening on the wall surface of the workpiece.
Description
Technical Field
The invention relates to the field of part surface strengthening and machining and manufacturing, in particular to a cavitation water shot blasting device and a shot blasting method based on temperature alternation, which can be used for strengthening the part surface.
Background
The traditional mechanical shot blasting technology has the problems of poor surface quality, low universality and the like, and is difficult to meet the requirements, so that a series of advanced shot peening technologies such as laser shot peening, ultrasonic shot peening, high-pressure water jet peening and the like appear. However, the above advanced processing method has a limitation on the surface strengthening of the parts. The surface hardening degree under laser peening is low, the strengthening efficiency of the ultrasonic peening technology is low, and the wide-range industrial application of the ultrasonic peening technology is restricted; the driving pressure of the high-pressure water jet shot blasting generally needs to exceed 200MPa, and the energy consumption is excessive.
The cavitation water shot blasting technology is a novel metal material surface modification technology for removing a tire from high-pressure water jet shot blasting, and the working principle is that a large amount of tiny cavitation clouds formed after submerged high-speed high-pressure water jet cavitation are reasonably utilized, and single tiny cavitation can generate shock waves of up to several GPa and high-speed water jet when the surface of the material collapses, so that the near-surface layer of the material is subjected to elastoplastic deformation, a residual stress layer with a certain depth is induced to be formed, and further the fatigue life, the wear resistance and the like of the material are improved. However, the cavitation water shot blasting technology still faces the problems of poor quality of part surfaces, low wear resistance, low machining efficiency and the like, and the technology has large driving pressure and excessive energy consumption.
The Chinese patent publication No. CN1113714940A discloses a cavitation jet device which is submerged manually, a working method thereof and a combined nozzle, high-pressure water generates cavitation jet flow and cavitation shock wave through the nozzle, and the state, strength and impact effect on materials of the cavitation jet flow and the cavitation shock wave are captured through an acoustic wave sensor, so that feedback and adjustment are performed, and optimization of the cavitation impact effect is realized; however, when high-pressure water generated by a high-pressure water pump is used to impact a metal material with high hardness, the driving pressure is generally required to exceed 200MPa, so that the energy consumption is too large and the cost is high. In the document of Chinese patent publication No. CN113084714A, cavitation shot blasting device is disclosed, cavitation is generated by utilizing the principle of ultrasonic induced cavitation, the shot blasting strength is regulated by regulating the flow velocity and ultrasonic power, and further the surface quality of a part is improved, but the device can only jet one surface of the part during shot blasting, and the machining efficiency is lower.
Disclosure of Invention
The invention aims to solve the problems of the surface strengthening treatment of the existing parts, and provides a cavitation water shot blasting device and a shot blasting method based on temperature alternation, which improve the quality of the machined surface and the machining efficiency and reduce the energy consumption.
The invention discloses a cavitation water shot blasting device based on temperature alternation, which adopts the following technical scheme:
the liquid-collecting device comprises a solution cavity, wherein the inside of the solution cavity is divided into a left cavity, a middle cavity and a right cavity by a partition plate, the bottom wall of each cavity is provided with a liquid outlet, the inner bottom of each cavity is provided with a pressure sensor, and the top of the left cavity or the right cavity is provided with an infusion port; the bottom in the middle cavity is a workbench, and a workpiece is arranged at the upper part of the workbench and a clamping element capable of clamping the workpiece is arranged at the upper part of the workbench; each partition plate is provided with a nozzle opening opposite to the side wall of the workpiece, and the two nozzles are symmetrically arranged relative to the workpiece; the inner side walls of the left cavity and the right cavity, which face the nozzle, are respectively provided with a quick heater; an electromagnetic door is arranged at the inlet of each nozzle to control the closing or opening of the nozzle; the two electromagnetic doors are electrified, the two rapid heaters heat, when the liquid pressure in the left cavity and the right cavity reaches a high-pressure state, the two electromagnetic doors are powered off, and cavitation water jet generated by the high-pressure water through the nozzle is used for shot peening strengthening of the workpiece.
The electromagnetic door consists of a spring, an electromagnet and a magnet block, wherein the electromagnet and the magnet block are respectively arranged on the upper side and the lower side of the nozzle inlet and fixedly connected with the partition board, the magnet block is connected with one end of the vertical spring, the other end of the spring is fixedly connected with the partition board, and the electromagnet is electrified or powered off.
The liquid outlet is connected with the solution collecting box through a first one-way valve and a reversing valve.
The liquid collecting box is connected with the cooling box through the first liquid pump and the second one-way valve in sequence.
The cooling tank is connected with the liquid nitrogen tank through a valve.
The cooling box is internally provided with a stirrer, and the stirrer is driven by a motor to rotate.
The infusion port is connected with the cooling box through the second liquid pump and the filter.
The invention relates to a peening method of a cavitation water peening device based on temperature alternation, which adopts the following technical scheme: the method comprises the following steps:
step 1): simultaneously, the two electromagnetic doors are electrified and the two nozzles are closed, the two rapid heaters heat simultaneously, the liquid pressure in the left cavity and the right cavity rises, and when the set high-pressure state is reached, the two electromagnetic doors are powered off, and the two rapid heaters stop heating;
step 2): the high-pressure water in the left cavity and the right cavity passes through corresponding nozzles to carry out shot peening strengthening on the side wall surface of the workpiece;
step 3): when the pressure sensor detects that the liquid pressure in the left cavity and the liquid pressure in the right cavity tend to be consistent, the liquid is discharged from the liquid outlet.
Further, an opening is formed in the top of the middle cavity, the opening is sealed by a detachable upper end cover, a bolt fastener extends into the middle cavity from the upper end cover 7 and is screwed with the upper end cover through threads, the lower end of the bolt fastener is tightly pressed on a workpiece, and after the step 3) is completed, the bolt fastener is loosened, the upper end cover is opened, and the workpiece is taken out.
The beneficial effects of the invention after adopting the technical scheme are as follows:
1. according to the invention, the traditional high-pressure water pump is not used for conveying high-pressure water to generate water jet flow and shock wave through the nozzle, but the liquid pressure of the left cavity and the right cavity is high in a heating expansion mode to generate high-pressure water, so that compared with the high-pressure water generated by the traditional high-pressure water pump, the energy consumption is lower, and the economic cost is lower.
2. According to the invention, the liquid pressure of the left cavity and the right cavity can be adjusted according to the shot blasting effect of different workpiece materials, and the pressure in a high pressure state is set to change the shot blasting strength, so that the shot blasting strength is matched with the residual stress of the surface of the part, thereby being beneficial to improving the quality and the wear resistance of the surface of the part and the like.
3. The invention can simultaneously carry out shot peening on two sides of the part, and can improve the surface quality and the processing efficiency of the part.
4. According to the invention, the pressure in the solution cavity is continuously converted between high pressure and low pressure in a temperature alternating mode, and the cavitation water jet and the shock wave generated by high pressure water through the nozzle are utilized to carry out shot peening strengthening on the wall surface of the workpiece.
5. The liquid in the device can be common tap water, and secondary pollution is not generated, so that the device has the remarkable advantages of low processing cost, green and environment-friendly performance and the like, is not limited by the reinforced surface, and can be used for reinforcing various complex surfaces.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic diagram of a cavitation water shot blasting device based on temperature alternation;
FIG. 2 is a schematic diagram of the solution chamber of FIG. 1;
FIG. 3 is an enlarged view of the agitator and motor assembly of FIG. 1;
in the figure: 1. solution chamber 2, quick heater, 3, spring, 4, magnet block, 5, first nozzle, 6, electromagnet, 7, upper end cap, 8, bolt fastener, 9, work piece, 10, clamping element, 11, work table, 12, first fluid outlet, 13, first pressure sensor, 14, second pressure sensor, 15, second fluid outlet, 16, third pressure sensor, 17, third fluid outlet, 18, fluid inlet, 19, controller, 20, first check valve, 21, reversing valve, 22, solution collection tank, 23, first liquid pump, 24, second check valve, 25, liquid nitrogen tank, 26, cooling tank, 27, agitator, 28, valve, 29, second liquid pump, 30, filter, 31, second nozzle, 32, motor, 101, left cavity, 102, middle cavity, 103, right cavity.
Detailed Description
Referring to fig. 1 and 2, the cavitation water shot blasting device based on temperature alternation is provided with a solution cavity 1, wherein the inside of the solution cavity 1 is divided into a left cavity 101, a middle cavity 102 and a right cavity 103 by a partition plate, the left cavity 101 and the right cavity 103 have the same structure and are bilaterally symmetrical relative to the middle cavity 102.
The bottom in the middle cavity 102 is a workbench 11, the upper part of the workbench 11 is provided with a workpiece 9 and a clamping element 10, the clamping element 10 is fixedly connected with the upper part of the workbench 11, and the workpiece 9 is clamped by the clamping element 10 for left and right positioning of the workpiece 9. The top of the intermediate chamber 102 has an opening which is sealed with a removable upper end cap 7. The bolt fastener 8 extends into the middle cavity 102 from the upper end cover 7, is screwed with the upper end cover 7 through threads, and the lower end of the bolt fastener 8 is pressed on the workpiece 9 to fix the workpiece 9. After the completion of the processing, the bolt fastener 8 is loosened, the upper end cap 7 is opened, the clamping member 10 is loosened, and the work piece 9 can be taken out.
A second liquid outlet 15 is formed on the bottom wall of the middle cavity 102 and is used for discharging the liquid in the middle cavity 102, and the second liquid outlet 15 is connected with the input end of the first one-way valve 20 through a pipe. The bottom in the middle cavity 102 is provided with a second pressure sensor 14 for detecting the liquid pressure in the middle cavity 102, and the second pressure sensor 14 is connected with the controller 19 through a signal wire.
Two partition boards in the solution cavity 1 are respectively provided with a nozzle, namely a first nozzle 5 and a second nozzle 31, the first nozzle 5 penetrates through the left cavity 101 and the middle cavity 102, an inlet of the first nozzle 5 faces the left cavity 101, and a nozzle faces the middle cavity 102. The second nozzle 31 penetrates the middle cavity 102 and the right cavity 103, the inlet of the second nozzle 31 faces the right cavity 103, and the outlet faces the middle cavity 102. The first nozzle 5 and the second nozzle 31 are symmetrically arranged left and right relative to the workpiece 9, the central axes are collinear, and the nozzle opening is opposite to the side wall of the workpiece 9.
An electromagnetic gate is provided at the inlet of the first nozzle 5 and the second nozzle 31, and the electromagnetic gate is connected to the controller 19. When the electromagnetic valve is electrified, the electromagnetic valve is closed, and conversely, the electromagnetic valve is opened, so that the electromagnetic valve is a switch for controlling whether the nozzle sprays or not.
The electromagnetic valve consists of a spring 3, an electromagnet 6 and a magnet block 4. The electromagnet 6 and the magnet block 4 are respectively arranged on the upper side and the lower side of the nozzle inlet and fixedly connected on the partition plate. The magnet block 4 is connected with one end of the vertical spring 3, and the other end of the vertical spring 3 is fixedly connected with the partition plate. The electromagnet 6 is electrically connected with the controller 19, when the controller 19 controls the electromagnet 6 to be electrified, the electromagnet 4 is attracted, the corresponding nozzle inlet is closed by the electromagnet 4, and the left cavity 101, the middle cavity 102 and the right cavity 103 are in a sealing state at the moment; when the electromagnet 6 is powered off, the spring 3 is reset, the magnet block 4 is pulled back, the first nozzle 5 and the second nozzle 31 are opened, and at the moment, the left cavity 101, the middle cavity 102 and the right cavity 103 are communicated.
On the inner side walls facing the first nozzle 5 and the second nozzle 31 in the left cavity 101 and the right cavity 103, a quick heater 2 is fixedly installed, and the quick heater 2 is fixed by a plurality of bolts. The two rapid heaters 2 are respectively connected with a controller 19 through control lines, and the controller 19 controls the rapid heaters 2 to work.
The bottoms in the left cavity 101 and the right cavity 103 are respectively provided with a pressure sensor for detecting the liquid pressure in the corresponding cavity. The bottom walls of the left cavity 101 and the right cavity 103 are respectively provided with a liquid outlet for discharging liquid in the corresponding cavities. The bottom in the left cavity 101 is provided with a first pressure sensor 13, and the bottom wall is provided with a first liquid outlet 12. A third pressure sensor 16 is arranged at the bottom in the right cavity 103, and a third liquid outlet 17 is arranged on the bottom wall. The first drain port 12 and the third drain port 17 are both connected to the inlet of the first check valve 20 via pipes. The first pressure sensor 13 and the third pressure sensor 16 are connected to the controller 19 via signal lines.
The outlet of the first one-way valve 20 is connected with a solution collecting box 22 through a reversing valve 21, and the reversing valve 21 is connected with the controller 19 through a control line. When the reversing valve 21 is opened, the liquid in the solution chamber 1 flows into the solution collection tank 22 due to the gravity. When all the liquid in the solution chamber 1 flows into the solution collection tank 22, the controller 19 closes the reversing valve 21.
The solution collecting tank 22 is also connected with a cooling tank 26 through a first liquid pump 23 and a second one-way valve 24 in sequence. The first liquid pump 23 is connected to the control unit 19 via a control line. The controller 19 controls the first liquid pump 23 to operate, and the first liquid pump 23 supplies the liquid in the pumped-solution collection tank 22 to the cooling tank 26. When the first liquid pump delivers all the liquid in the solution collection tank 22 to the cooling tank 26, the controller 19 turns off the first liquid pump 23.
The cooling tank 26 is internally provided with a stirrer 27, as shown in fig. 3, and the stirrer 27 is rotated by a motor 32. The stirrer 27 works in the cooling tank 26, a central shaft of the stirrer 27 is fixedly and coaxially connected to an output shaft of the motor 32, and the stirrer 27 is rotated by the motor 32. The motor 32 is fixed outside or inside the cooling box 26, and is connected with the controller 19 through a control wire, and the start and stop of the motor 32 are controlled by the controller 19.
The liquid nitrogen tank 25 is connected with the cooling box 26 through the valve 28, the valve 28 is connected with the controller 19 through a control line, when the controller 19 opens the valve 28 and the motor 32, liquid nitrogen in the liquid nitrogen tank 25 can naturally volatilize into the cooling box 26, and the stirrer 27 stirs the cooling box 26 to accelerate cooling. When the liquid nitrogen in the liquid nitrogen tank 25 naturally volatilizes to a set time, the purpose of uniformly cooling the liquid is achieved, and the invention sets the natural liquid nitrogen volatilization time to 15 minutes. The controller 19 may then close the valve 28 and the motor 32.
An infusion port 18 is formed in the top of the left cavity 101 or the right cavity 103, and liquid is input from the infusion port 18. The infusion port 18 is connected in sequence to a second liquid pump 29, a filter 30 and a cooling tank 26 via a pipe, and the second liquid pump 29 is connected to the controller 19 via a control line. When the controller 19 turns on the second liquid pump 29, the cooled liquid in the cooling tank 26 can be re-conveyed into the solution cavity 1 through the infusion port 18, and when all the liquid in the cooling tank 26 is conveyed into the solution cavity 1, the gap in the solution cavity 1 is just filled with the liquid, and at the moment, the controller 19 turns off the second liquid pump 29.
Defining the initial pressure 101.325kPa (one atmosphere pressure) in the solution cavity 1 as a low pressure state, powering on the electromagnet 6 by the controller 19, closing the first nozzle 5 and the second nozzle 31, enabling the left cavity 101 and the right cavity 103 in the solution cavity 1 to be in a closed state, then controlling the rapid heater 2 to generate heat by the controller 19, continuously expanding the liquid by heating to continuously raise the pressure in the left cavity 101 and the right cavity 103, and defining the pressure in the left cavity 101 and the right cavity 103 as a high pressure state, 150MPa and above as a high pressure state, wherein the pressure in the middle cavity 102 is still the low pressure state because the left cavity 101, the middle cavity 102 and the right cavity 103 are mutually independent; the controller 19 controls the electromagnet 6 to be powered off, the first nozzle 5 and the second nozzle 31 are opened, the left cavity 101, the middle cavity 102 and the right cavity 103 are communicated, and high-pressure water in the left cavity 101 and the right cavity 103 is impacted on the workpiece 9 through the corresponding first nozzle 5 and the second nozzle 31.
The high-pressure state can be adjusted to 150MPa, 200MPa, 250MPa and the like according to the pressure values of the high-pressure states of different workpiece materials), so that the shot blasting strength can be changed.
The invention relates to a cavitation water shot blasting device based on temperature alternation, which comprises the following specific working processes:
the workpiece 9 to be processed is placed on the table 11 in the solution chamber 1, the workpiece 9 is clamped by the clamping member 10, and then the bolt fastener 8 is screwed, and the workpiece 9 is fixed from the upper portion.
The controller 19 turns on the second liquid pump 29 to feed the liquid in the cooling tank 26 into the solution chamber 1, and when the liquid in the solution chamber 1 is filled, the controller 19 turns off the second liquid pump 29.
Simultaneously, two electromagnetic doors are electrified and two nozzles are closed, the controller 19 simultaneously electrifies two electromagnets 6, closes the first nozzle 5 and the second nozzle 31, and simultaneously opens two rapid heaters 2 for heating. The first pressure sensor 13 and the third pressure sensor 16 respectively detect the pressures in the left cavity 101 and the right cavity 103 and transmit pressure signals to the controller 19, when the liquid pressures in the left cavity 101 and the right cavity 103 reach a high-pressure state (200 MPa is set in the invention), namely, the set high-pressure state is reached, the two electromagnetic doors are powered off, and the controller 19 controls the two electromagnets 6 to be powered off and the two rapid heaters 2 to stop heating. The liquid pressure in the intermediate chamber 102 is still at a low pressure of 101.325kPa.
After the two electromagnets 6 are powered off, high-pressure water in the left cavity 101 and the right cavity 103 passes through the corresponding first nozzle 5 and the second nozzle 31 at the same time, cavitation water jet flow and shock wave are generated, and shot peening strengthening is carried out on the side wall surface of the workpiece 9 at the same time. At the same time, the first pressure sensor 13, the second pressure sensor 14 and the third pressure sensor 16 respectively detect the liquid pressures of the left cavity 101, the middle cavity 102 and the right cavity 103, and when the pressures of the three are consistent, the controller 19 opens the reversing valve 21, and the liquid in the left cavity 101, the middle cavity 102 and the right cavity 103 naturally flows into the solution collecting tank 22 under the action of gravity. When the liquid in the solution chamber 1 flows entirely into the solution collection tank 22, the controller 19 closes the reversing valve 21.
The first liquid pump 23, the motor 32 and the valve 28 are opened, the solution in the solution collecting tank 22 is pumped into the cooling tank 26, liquid nitrogen in the liquid nitrogen tank 25 volatilizes into the cooling tank 26 to cool the liquid, the stirrer 27 works to accelerate the cooling of the liquid, and the liquid is cooled in the cooling tank 26.
The cooled cold water can be conveyed into the solution cavity 1 again, and the work piece 9 can be taken out by unscrewing the bolt fastener 8 and opening the upper end cover 7 and the clamping element 10 after the predetermined working time is finished.
Claims (9)
1. Cavitation water shot blasting device based on temperature alternation is provided with a solution cavity (1), and is characterized in that: the solution cavity (1) is internally divided into a left cavity (101), a middle cavity (102) and a right cavity (103) by a partition plate, the bottom wall of each cavity is provided with a liquid outlet, the inner bottom is provided with a pressure sensor, and the top of the left cavity (101) or the right cavity (103) is provided with a liquid inlet (18); the bottom in the middle cavity (102) is provided with a workbench (11), and the upper part of the workbench (11) is provided with a workpiece (9) and a clamping element (10) capable of clamping the workpiece (9); each partition board is provided with a nozzle opening opposite to the side wall of the workpiece (9), and the two nozzles are symmetrically arranged relative to the workpiece (9); the inner side walls of the left cavity (101) and the right cavity (103) facing the nozzle are respectively provided with a quick heater (2); an electromagnetic door is arranged at the inlet of each nozzle to control the closing or opening of the nozzle; the two electromagnetic doors are electrified, the two rapid heaters (2) heat, when the liquid pressure in the left cavity (101) and the right cavity (103) reaches a high-pressure state, the two electromagnetic doors are powered off, and cavitation water jet generated by the high-pressure water through the nozzle strengthens the shot blasting of the workpiece (9);
simultaneously, two electromagnetic doors are electrified and two nozzles are closed, two rapid heaters (2) heat simultaneously, the liquid pressure in the left cavity (101) and the right cavity (103) rises, and when the set high-pressure state is reached, the two electromagnetic doors are powered off, and the two rapid heaters (2) stop heating;
the high-pressure water in the left cavity (101) and the right cavity (103) passes through corresponding nozzles to carry out shot peening strengthening on the side wall surface of the workpiece (9);
when the pressure sensor detects that the liquid pressure in the left cavity (101) and the liquid pressure in the right cavity (103) tend to be consistent, the liquid is discharged from the liquid outlet.
2. A cavitation water peening apparatus according to claim 1, wherein the cavitation water peening apparatus is based on temperature alternation, characterized by: the electromagnetic door consists of a spring (3), an electromagnet (6) and a magnet block (4), wherein the electromagnet (6) and the magnet block (4) are respectively arranged on the upper side and the lower side of a nozzle inlet and fixedly connected with a partition plate, the magnet block (4) is connected with one end of the vertical spring (3), the other end of the spring (3) is fixedly connected with the partition plate, and the electromagnet (6) is electrified or powered off.
3. A cavitation water peening apparatus according to claim 1, wherein the cavitation water peening apparatus is based on temperature alternation, characterized by: the liquid draining ports are connected with the solution collecting box (22) through the first one-way valve (20) and the reversing valve (21).
4. A cavitation water peening apparatus according to claim 3, wherein the temperature is alternating based on: the liquid collecting box (22) is connected with the cooling box (26) through the first liquid pump (23) and the second one-way valve (24) in sequence.
5. A cavitation water peening apparatus according to claim 4, wherein the cavitation water peening apparatus is based on temperature alternation, characterized by: the cooling box (26) is connected with the liquid nitrogen tank (25) through a valve (28).
6. A temperature-alternating-based cavitation water peening device according to claim 5, wherein: the cooling box (26) is internally provided with a stirrer (27), and the stirrer (27) is driven to rotate by a motor (32).
7. A cavitation water peening apparatus according to claim 1, wherein the cavitation water peening apparatus is based on temperature alternation, characterized by: the infusion port (18) is connected with the cooling box (26) through the second liquid pump (29) and the filter (30).
8. A cavitation water peening apparatus according to claim 1, wherein the cavitation water peening apparatus is based on temperature alternation, characterized by: the top of the middle cavity (102) is provided with an opening, the opening is sealed by a detachable upper end cover (7), a bolt fastener (8) stretches into the middle cavity (102) from the upper end cover (7) and is screwed with the upper end cover (7) through threads, the lower end of the bolt fastener (8) is tightly pressed on a workpiece (9), after the step (3) is completed, the bolt fastener (8) is loosened, the upper end cover (7) is opened, and the workpiece (9) is taken out.
9. A cavitation water peening apparatus according to claim 1, wherein the cavitation water peening apparatus is based on temperature alternation, characterized by: the high-pressure state is a state in which the liquid pressure in the left cavity (101) and the right cavity (103) is 150MPa or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210760551.2A CN114918837B (en) | 2022-06-30 | 2022-06-30 | Cavitation water shot blasting device and method based on temperature alternation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210760551.2A CN114918837B (en) | 2022-06-30 | 2022-06-30 | Cavitation water shot blasting device and method based on temperature alternation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114918837A CN114918837A (en) | 2022-08-19 |
| CN114918837B true CN114918837B (en) | 2024-04-09 |
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Family Applications (1)
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