Manufacturing equipment and manufacturing method of lightweight plunger rod

Abstract

The invention relates to the technical field of metal material manufacturing, in particular to manufacturing equipment and a manufacturing method of a light-weight plunger rod, aims to solve the technical problems that in the prior art, manufacturing is tedious, and eccentric wear is difficult to solve, and is mainly achieved through the following technical scheme. Comprising an equipment chamber, a mounting clamp, a machining workpiece and a magnetic control workpiece, and the mounting clamp, the machining workpiece and the magnetic control workpiece are all arranged in the equipment chamber. A manufacturing method of a lightweight plunger rod comprises the steps of plunger rod manufacturing, cladding material preparation, laser cladding, impact strengthening, hardness inspection, magnetron sputtering and the like, a machining workpiece and a magnetron workpiece are arranged in an equipment chamber in a centralized mode and are prevented from interfering with each other through an isolation assembly, and the manufacturing method integrally simplifies machining engineering; on the premise that the structure of the plunger rod is not changed, lightweight manufacturing and machining of the plunger rod are achieved, and the manufacturing and machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal material manufacturing, and in particular to a manufacturing device and a manufacturing method of a lightweight plunger rod. Background Art

[0002] At present, ultra-high pressure plunger pumps are mainly used in the field of shipbuilding and offshore engineering, involving the rust removal process on the surface of ships. As the core component of the ultra-high pressure plunger pump, the plunger rod is related to the operating efficiency of the pump and the progress of the rust removal operation. The plunger rods of existing ultra-high pressure plunger pumps are mostly made of cemented carbide, which has high overall hardness and is difficult to process, so it is inevitable that there are some defects on the surface of the workpiece. At the same time, the ultra-high pressure plunger rods currently used are relatively heavy. They are affected by gravity during operation and are very likely to produce eccentric wear with the plunger cylinder sleeve. Working in an ultra-high pressure and high-speed environment for a long time will cause the defects of the plunger rod to further develop and produce cracks, which seriously reduces the service life of the plunger rod. Therefore, it is necessary to manufacture the plunger rod in a lightweight manner while ensuring its use to effectively solve the problem of eccentric wear.

[0003] A Chinese patent with publication number CN106439003A discloses a lightweight piston rod, the cross-section of which is a cross-shaped column, and four concave arc grooves are symmetrically opened on its side along the axial direction of the rod body. Although the application reduces the weight of the plunger rod itself through structural design, it affects the bearing capacity of the plunger rod and is not suitable for the field of offshore engineering plunger pumps in high-pressure and complex environments; a Chinese patent with publication number CN102501026A discloses a method for manufacturing a piston rod coated with a stainless steel plate. By coating a layer of stainless steel plate on the outside of the piston rod, the strength and corrosion resistance of the piston rod are solved and the wear resistance of the plunger rod is improved. The application transfers the eccentric wear to the coating layer and does not effectively reduce the eccentric wear.

[0004] Therefore, there is a need for a manufacturing device and method that does not change the original structure of the plunger rod but can manufacture the plunger rod in a lightweight manner and reduce eccentric wear, and that simplifies the preparation process and ensures the surface strength of the plunger rod. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that the manufacturing is complicated and the eccentric wear is difficult to solve, so as to provide a manufacturing device and a manufacturing method of a lightweight plunger rod.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A manufacturing device for a lightweight plunger rod comprises a cylindrical equipment room, a frame is arranged below the equipment room, a working cavity is arranged in the equipment room, an operating door is hingedly arranged at the front side of the equipment room, a control console is also arranged outside the equipment room, the control console is connected to the equipment room signal control, and further comprises:

[0008] The mounting fixture is relatively arranged at two ends of the working chamber, the mounting fixture comprises an upper fixture and a lower fixture, the upper fixture is positioned and rotatably installed at the top of the working chamber, the lower fixture is positioned and rotatably installed at the bottom of the working chamber, the bottom of the lower fixture extends out of the equipment room and is also connected to a rotating member, the rotating member comprises a transmission gear, a rotating gear and a rotating motor, the transmission gear is coaxially arranged with the lower fixture and fixed at the bottom of the lower fixture, the rotating gear is meshed with the transmission gear, the rotating gear is also sleeved on the output shaft of the rotating motor, and the rotating motor is mounted on the frame;

[0009] A processing workpiece, wherein the processing workpiece is installed in a working chamber, wherein the processing workpiece comprises a cladding workpiece and an impact workpiece which are arranged oppositely, wherein vertical cladding tracks and impact tracks are respectively arranged in the working chamber corresponding to the cladding workpiece and the impact workpiece, wherein the cladding tracks and impact tracks are both arranged along the axis of the working chamber and fixed to the inner wall of the equipment room, wherein the cladding workpiece comprises a cladding drive, a cladding part and a cladding cable, wherein the cladding drive controls the cladding part to slide on the cladding track, wherein one end of the cladding cable is connected to the cladding part and slides vertically with the cladding part, and the other end extends out of the equipment room, wherein the impact workpiece comprises an impact drive, an impact part and a power line, wherein the impact drive controls the impact part to slide on the impact track, wherein one end of the power line is connected to the impact part and slides vertically with the impact part, and the other end extends out of the equipment room, and an impact power supply is arranged outside the equipment room and connected to the power line;

[0010] A magnetron workpiece, wherein the magnetron workpiece is arranged in a working chamber, the magnetron workpiece comprises an operating target material and an isolation assembly, wherein a plurality of operating targets are arranged and installed in a circular array on the inner wall of the equipment chamber, the isolation assembly is arranged in the working chamber near the top, the isolation assembly comprises two relatively arranged movable isolations and two relatively arranged fixed isolations, the movable isolations are arranged correspondingly on the top of the cladding workpiece, and the fixed isolations are arc-shaped and relatively arranged in the working chamber.

[0011] By adopting the above technical scheme, the present application realizes cladding operation, ultrasonic impact and magnetron sputtering in the equipment room, without the need to update equipment or transfer materials in the middle, etc., and can achieve the purpose of centralized processing. Compared with the existing equipment, it can shorten the production time, improve production efficiency, and improve processing quality; when in use, the cladding operation and ultrasonic impact can be carried out synchronously or asynchronously, and the cladding layer can be detected and processed in time, with good feedback effect, high timeliness of processing, and higher quality of manufactured plunger rods; a control console is set to be connected with the processing workpiece-cladding workpiece and impact workpiece, magnetron workpiece signal control, effectively improving the operation intelligence and realizing automated production operation; an isolation component is set above the operating target material to effectively avoid interference and damage to the processing workpiece during magnetron sputtering, thereby improving the service life of the equipment.

[0012] Furthermore, the upper clamp includes an upper claw disc body, three upper claw bodies and an upper claw drive, and the upper claw drive is arranged in the upper claw disc body to control the radial relative movement of the three upper claw bodies along the upper claw disc body; the lower clamp includes a lower claw disc body, three lower claw bodies and a lower claw drive, and the lower claw drive is arranged in the lower claw disc body to control the radial relative movement of the three lower claw bodies along the lower claw disc body, and the lower claw disc body is also provided with a rolling bearing near the bottom outer wall, the rolling bearing is key-connected to the lower claw disc body, and the rolling bearing is positioned and rotatably installed at the bottom of the equipment room.

[0013] By adopting the above technical solution, the upper clamp and the lower clamp cooperate to realize the clamping operation of the machined plunger rod, and the mounting clamp cooperates with the rotating part at the bottom to realize the positioning rotation of the workpiece, so that the circular motion of the workpiece cooperates with the axial sliding of the processed workpiece to realize the surface coating of the plunger rod.

[0014] Furthermore, the cladding part includes a cladding operating arm, a cladding head and a cladding slider. The cladding operating arm is a telescopic structure and is radially arranged along the equipment room. A cladding head is fixed to one end of the cladding operating arm close to the center of the equipment room, and a cladding slider is fixed to the other end of the cladding operating arm. The cladding slider is controlled by the cladding drive to slide in the cladding track; the cladding cable includes a powder feeding channel, a cladding part power line and an optical fiber. The cladding cable passes through the cladding slider and extends out of the equipment room along the cladding track. An operating device is also arranged outside the equipment room to be connected to the cladding cable. The operating device includes a powder feeder, a cladding power supply and a laser transmitter. The other end of the powder feeding channel is connected to the powder feeder, the other end of the cladding part power line is connected to the cladding power supply, and the other end of the optical fiber is connected to the laser transmitter.

[0015] By adopting the above technical solution, the cladding head slides up and down with the cladding slider to realize the cladding operation on the surface of the plunger rod. The cladding operation arm can be extended to perform surface cladding according to plunger rods of different diameters. The operating equipment provides power, laser and powder feeding support for the cladding parts.

[0016] Furthermore, a through hole is provided on the equipment room corresponding to the cladding cable, and a sealing member is provided at the through hole, wherein the sealing member comprises a sealing ring and an expansion ring, wherein the sealing ring is clamped and installed in the through hole, the expansion ring is extended on the sealing ring and a through hole is left in the middle, and the expansion ring is arranged on the side of the sealing ring away from the equipment room; two vertically parallel wire wheels are provided on the top of the cladding track corresponding to the cladding cable, the axis of the wire wheels is arranged along the width direction of the cladding track and is positioned and rotatably installed in the equipment room, and a wire feeding wheel is also positioned and rotatably installed on the side of the cladding slider close to the cladding track, and the axis of the wire feeding wheel is also arranged along the width direction of the cladding track, and shielding plates are relatively arranged in the cladding track, the shielding plates are arranged along the length direction of the cladding track and the width is less than half of the width of the cladding track, and a gap is left between the two shielding plates.

[0017] By adopting the above technical solution, the powder feeder, cladding power supply and laser transmitter are combined into one cable to provide support for the cladding parts and connected into the equipment room through holes, reducing the contact between the equipment room and the outside world to ensure internal sealing and stable air pressure; the wire wheel cooperates with the wire feeding wheel to ensure stable wire feeding and avoid the entanglement of the wires when the cladding operating arm slides up and down, affecting the cladding process; the shielding plate shields part of the cladding track to reduce the impact of sliding and prevent impurities and dust from splashing into the cladding track.

[0018] Furthermore, an adjusting member is provided between the operating equipment and the equipment room, and the cladding cable is wound around the adjusting member. The adjusting member includes an adjusting frame, an adjusting drive, a plurality of guide wheels and a sliding wheel. The guide wheels and the sliding wheel are both positioned and rotatably installed on the adjusting frame. The guide wheels are arranged in pairs and are arranged on both sides of the sliding wheel. The sliding wheel is also controlled to be raised and lowered by the adjusting drive and is arranged on the adjusting frame. A sliding groove is provided on the adjusting frame for the sliding wheel to slide.

[0019] By adopting the above technical solution, since there are many wires wound around the cladding cable, an adjustment piece is provided to facilitate the smooth sliding of the cladding cable up and down, thereby realizing the combing operation of the cladding cable, avoiding the situation where the lines are tangled and messy, and also avoiding safety accidents caused by the interlaced pulling of the lines.

[0020] Furthermore, the impact member includes an impact operating arm, an impact head and an impact slider. The impact operating arm is a telescopic structure and is radially arranged along the equipment room. An impact head is fixed to one end of the impact operating arm close to the center of the equipment room, and an impact slider is fixed to the other end of the impact operating arm. A through hole is also opened on the equipment room corresponding to the power cord, and a seal is provided at the through hole. A limiting plate is relatively arranged in the impact track, and the limiting plate is arranged along the length direction of the impact track and has a width less than half of the width of the impact track, and a gap is left between the two limiting plates.

[0021] By adopting the above technical solution, the sealant seals the penetration hole to reduce the interference of the external environment on the interior of the equipment room, and the limit plate also protects the impact track.

[0022] Furthermore, the two movable isolations are connected by a telescopic drive of a double-end shaft, and each of the movable isolations includes two relatively arranged isolation plates and an isolation drive, and the isolation drive controls the relative movement of the two isolation plates. The isolation plates are provided with clearance gaps corresponding to the cladding track and the impact track, and the two isolation plates are relatively engaged with each other and the isolation plates are movably arranged above the fixed isolation. A limiting card is also extended from the fixed isolation, and the limiting card is arranged radially along the fixed isolation and relatively arranged on both sides of the top of the fixed isolation.

[0023] Furthermore, each of the isolation drives includes two drive gears and a drive rack, and the drive rack is respectively meshed with two drive gears on both sides. The drive gear is installed on the isolation plate and drives the isolation plate to move. The drive rack is arranged in the middle of the two isolation plates and is laterally slidably arranged above the fixed isolation. The drive rack is controlled by the telescopic drive of the double-end output shaft.

[0024] By adopting the above technical solution, taking the movable isolation on the left as an example, under normal circumstances, the movable isolation is opened without affecting the cladding operation. After the cladding operation and the impact operation are completed, the cladding workpiece and the impact workpiece are both raised and stored on the top of the equipment room. At this time, the output shafts at both ends of the telescopic drive are controlled to move close to the center of the circle, thereby pushing the driving rack on the left to the right, driving the two isolation plates to approach each other, until the gap is made to fit with the cladding track and the sides of the two isolation plates fit together, completing the closing operation. At this time, the magnetron sputtering operation is performed to avoid affecting the cladding workpiece and the impact workpiece during magnetron sputtering, thereby avoiding reducing their service life.

[0025] A method for manufacturing a lightweight plunger rod, characterized in that: the manufacturing equipment for a lightweight plunger rod according to any one of claims 1 to 8 comprises:

[0026] S1. Manufacturing of plunger rod. The plunger rod core is composed of the following components in weight percentage: 0.5-1.5% chromium, 0.5-1.5% iron, 4.4-5.7% aluminum, 4.0-5.5% molybdenum, 85.8-90.6% titanium. After melting and casting, it is turned to the required size and the surface is machined and polished;

[0027] S2. Preparation of cladding materials. Nickel-aluminum alloy powder is used as the cladding layer powder. The mass ratio of nickel-aluminum alloy powder is: aluminum 28.8-36.1%, chromium 19-23%, iron 3.2-9.3%, molybdenum 5.7-10%, nickel 28.9%-36%, Al powder particle size range is between 100-200 mesh, Ni powder particle size range is between 150-250 mesh;

[0028] S3, laser cladding, the plunger rod to be processed is installed in the working chamber and driven by the fixing fixture to rotate in a circle, and the cladding workpiece moves axially on the outside of the plunger rod until the surface of the plunger rod is completely clad; laser power 2200W, spot diameter 4mm, overlap rate 50%, scanning speed 0.007m / s, powder feeding speed 12g / min, nitrogen protection is used in the process of laser cladding, the protective gas flow rate is 15L / min, and the thickness of the prepared cladding layer is 4mm;

[0029] S4, impact strengthening, the plunger rod to be processed is installed in the working chamber and driven by the fixed fixture to rotate in a circle, the impact workpiece moves axially on the outside of the plunger rod, the ultrasonic impact parameters are adjusted to ultrasonically treat the laser cladding layer to eliminate the residual stress of the cladding layer, and the hardness of the laser cladding transition layer is adjusted to be 0.6-0.65 of the hardness span of the substrate and the magnetron sputtering layer. The hardness after ultrasonic impact strengthening is used to test the selected nickel-aluminum alloy powder ratio and the laser cladding and ultrasonic impact process parameters;

[0030] S5. Use nanoindentation technology to check the hardness change of the cladding layer and verify the strengthening effect of ultrasonic impact. If the strengthening effect meets the requirements, determine the alloy powder ratio and cladding and ultrasonic parameters in S2-S4; if the strengthening effect does not meet the requirements, repeat steps S2-S4 to readjust the alloy powder ratio and cladding and ultrasonic process parameters;

[0031] S6. Magnetron sputtering was used to deposit a thin film on the cladding layer to further increase the surface hardness to 1000 HV. The magnetron sputtering parameters were adjusted to a bias voltage of -180 V, a temperature of 25 °C, a gas flow rate of 140 sccm, a current of 6.5 A, a high entropy alloy target as the sputtering target, and working gases of Ar and N2, wherein the ratio of N2:Ar was 0.5. The target-substrate distance was 130 mm, the duty cycle was 50%, and the target atomic fraction ratio was: 11.2% copper, 22.2% cobalt, 22.2% chromium, 22.8% iron, and 22.8% nickel.

[0032] By adopting the above technical scheme, the present application first prepares the rod core of the plunger rod with a lightweight alloy material and machines it, and then uses laser cladding equipment to process a cladding layer on the surface of the plunger rod core. During the laser cladding process, ultrasonic impact is continuously strengthened to eliminate the residual stress of the cladding layer, thereby enhancing the surface hardness of the plunger rod after laser cladding. Finally, magnetron sputtering is used to deposit a magnetron sputtering film on the cladding layer to further improve the surface hardness of the plunger rod and complete the manufacturing of the plunger rod. The present application improves the comprehensive performance of the plunger rod, such as hardness, toughness and strength. The product meets the complex environment in which the ultra-high pressure plunger pump is used without changing the structure of the plunger rod, thereby effectively reducing the manufacturing cost of the plunger rod.

[0033] Furthermore, before the magnetron sputtering operation, a glow sputtering pretreatment of 15-20 minutes is performed to clean the target material. During the cleaning process, the target current is set to 4A, the negative bias voltage is -240V, and the duration is 15-20 minutes.

[0034] By adopting the above technical solution, the purpose of cleaning the target material is achieved through the pretreatment of glow sputtering, which facilitates the combination of the thin film produced by the magnetron sputtering operation and the cladding layer.

[0035] In summary, the technical solution of the present invention has the following advantages:

[0036] 1. The manufacturing equipment for the lightweight plunger rod provided by the present invention realizes cladding operation, ultrasonic impact and magnetron sputtering in the equipment room, and there is no need to update the equipment or transfer materials in the middle, so the purpose of centralized processing can be achieved. Compared with the existing equipment, it can shorten the production time, improve the production efficiency and improve the processing quality; when in use, the cladding operation and the ultrasonic impact can be carried out synchronously or asynchronously, the processing timeliness is high, and the quality of the manufactured plunger rod is higher.

[0037] 2. The manufacturing equipment for the lightweight plunger rod provided by the present invention can effectively avoid interference and damage to the processed workpiece during magnetron sputtering by arranging an isolation component above the operating target material, thereby improving the service life of the equipment.

[0038] 3. The manufacturing method of the lightweight plunger rod provided by the present invention comprises the following steps: the cladding layer is manufactured by laser cladding, the cladding layer is strengthened by ultrasonic impact, and then a magnetron sputtering process is added to form a magnetron sputtering film. The composite layer composed of the cladding layer and the magnetron sputtering film has good bonding force, which meets the use requirements of the plunger rod in the ultra-high pressure offshore engineering plunger pump. At the same time, the weight introduced is negligible, thereby achieving the purpose of lightweight manufacturing and reducing eccentric wear.

[0039] 4. The manufacturing method of the lightweight plunger rod provided by the present invention makes the hardness value of the laser cladding layer be located at 0.6-0.65 of the hardness span of the substrate and the magnetron sputtering layer through the cladding layer powder ratio, and adjusts the surface hardness of the laser cladding layer to be located at 0.6-0.63 of the hardness span of the cladding layer and the magnetron sputtering layer through ultrasonic impact, thereby achieving an optimal hardness gradient and making the prepared composite layer less prone to cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1It is a schematic diagram of the overall structure of a lightweight plunger rod manufacturing device provided in one embodiment of the present invention;

[0042] Figure 2 A cross-sectional view of a manufacturing device for a lightweight plunger rod provided in one embodiment of the present invention;

[0043] Figure 3 A schematic diagram of the internal structure of an equipment room provided in one embodiment of the present invention;

[0044] Figure 4 A schematic diagram of a partial structure of a magnetron workpiece provided in one embodiment of the present invention;

[0045] Figure 5 A flowchart of a method for manufacturing a lightweight plunger rod provided in one embodiment of the present invention;

[0046] Figure 6 The microscopic morphology of magnetron sputtering films on the surface of cladding layers with different aluminum contents;

[0047] Figure 7 Comparison of cross-sectional microstructures of magnetron sputtering operations with different hardness gradients.

[0048] Description of reference numerals:

[0049] 1. Equipment room; 11. Frame; 12. Working chamber; 13. Cladding track; 131. Wire pulley; 132. Wire feeding wheel; 133. Shielding sheet; 14. Impact track; 141. Limiting sheet; 15. Operating door; 16. Through hole; 17. Seal; 171. Seal ring; 172. Expansion ring; 1721. Through hole; 2. Control console; 3. Installation fixture; 31. Upper fixture; 311. Upper claw disc body; 312, upper clamping jaw body; 313, upper clamping jaw drive; 32, lower clamp; 321, lower clamping jaw disc body; 3211, rolling bearing; 322, lower clamping jaw body; 323, lower clamping jaw drive; 33, rotating part; 331, transmission gear; 332, rotating gear; 333, rotating motor; 4, processing workpiece; 41, cladding workpiece; 412, cladding part; 4121, cladding operation arm; 4122, Cladding head; 4123, cladding slider; 413, cladding cable; 4131, powder feeding channel; 4132, cladding power cord; 4133, optical fiber; 42, impact workpiece; 422, impact piece; 4221, impact operating arm; 4222, impact head; 4223, impact slider; 423, power cord; 5, magnetron workpiece; 51, operating target; 52, isolation component; 521, movable isolation; 5211, isolation plate; 52111, clearance gap; 5212, isolation drive; 52121, drive gear; 52122, drive rack; 522, fixed isolation; 5221, limiting card; 6, operating equipment; 61, powder feeder; 62, cladding power supply; 63, laser transmitter; 7, adjustment member; 71, adjustment frame; 711, sliding groove; 72, adjustment drive; 73, guide wheel; 74, sliding wheel. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] A manufacturing device for a lightweight plunger rod, such as Figure 1 and Figure 2 As shown, it includes an equipment room 1, a mounting fixture 3, a processing workpiece 4 and a magnetron workpiece 5, which are all arranged in the equipment room 1, and also includes a control console 2. The present application realizes cladding operation, ultrasonic impact and magnetron sputtering in the equipment room 1, without the need to update equipment or transfer materials in the middle, etc., and can achieve the purpose of centralized processing. Compared with the existing equipment, it can shorten the production time, improve production efficiency and improve processing quality; the control console 2 is set to be connected with the processing workpiece 4 - cladding workpiece 41 and impact workpiece 42, magnetron workpiece 5 signal control, which is necessary to improve the operation intelligence and realize automated production operation.

[0052] like Figure 1 and Figure 2As shown, the installation fixture 3 is relatively arranged at the upper and lower ends of the working chamber 12, and the installation fixture 3 includes an upper fixture 31 and a lower fixture 32. The upper fixture 31 is positioned and rotatably installed at the top of the working chamber 12, and the lower fixture 32 is positioned and rotatably installed at the bottom of the working chamber 12. The upper fixture 31 includes an upper claw disc body 311, three upper claw bodies 312 and an upper claw drive 313. The upper claw drive 313 is arranged in the upper claw disc body 311 to control the three upper claw bodies 312 to move relative to each other along the radial direction of the upper claw disc body 311. The upper claw drive 313 includes a plurality of upper bevel gears, a gear plate and a spiral track. The upper bevel gear is meshed with the gear plate, and the upper claw body 312 is engaged with the spiral track. When a certain upper bevel gear is rotated, the gear plate is driven to rotate, so that the spiral track fixed to the gear plate rotates accordingly, thereby driving the upper claw body 312 to slide along the radial groove on the surface of the upper claw disc body 311, thereby realizing the clamping and loosening of the upper fixture 31.

[0053] The lower clamp 32 includes a lower jaw disc body 321, three lower jaw bodies 322 and a lower jaw drive 323. The lower jaw drive 323 is arranged in the lower jaw disc body 321 to control the three lower jaw bodies 322 to move relative to each other along the radial direction of the lower jaw disc body 321. The lower jaw disc body 321 is also sleeved with a rolling bearing 3211 near the bottom outer wall. The rolling bearing 3211 is key-connected with the lower jaw disc body 321, and the rolling bearing 3211 is positioned and rotatably installed at the bottom of the equipment room 1. The working principle of the lower clamp 32 is the same as that of the upper clamp 31.

[0054] like Figure 2 and Figure 3 As shown, the bottom of the lower fixture 32 extends out of the equipment room 1 and is also connected to a rotating member 33, which includes a transmission gear 331, a rotating gear 332 and a rotating motor 333. The transmission gear 331 is coaxially arranged with the lower fixture 32 and fixed at the bottom of the lower fixture 32. The rotating gear 332 is meshed with the transmission gear 331. The rotating gear 332 is also sleeved on the output shaft of the rotating motor 333, and the rotating motor 333 is installed on the frame 11. The mounting fixture 3 cooperates with the rotating member 33 at the bottom to realize the positioning and rotation of the workpiece, so that the circular motion of the workpiece cooperates with the axial sliding of the processed workpiece 4 to realize the surface coating of the plunger rod.

[0055] like Figure 1 , Figure 2 and Figure 3As shown, the processing workpiece 4 is installed in the working chamber 12, and the processing workpiece 4 includes a cladding workpiece 41 and an impact workpiece 42 which are relatively arranged. Vertical cladding tracks 13 and impact tracks 14 are respectively arranged in the working chamber 12 corresponding to the cladding workpiece 41 and the impact workpiece 42. The cladding tracks 13 and the impact tracks 14 are both arranged along the axis of the working chamber 12 and fixed to the inner wall of the equipment room 1. The cladding workpiece 41 includes a cladding drive, a cladding part 412 and a cladding cable 413. The cladding drive (not shown in the figure) controls the cladding part 412 to slide on the cladding track 13. One end of the cladding cable 413 is connected to the cladding part 412 and slides vertically with the cladding part 412, and the other end extends out of the equipment room 1.

[0056] The impact workpiece 42 includes an impact drive, an impact piece 422 and a power cord 423. The impact drive (not shown in the figure) controls the impact piece 422 to slide on the impact track 14. One end of the power cord 423 is connected to the impact piece 422 and slides vertically with the impact piece 422, and the other end extends out of the equipment room 1. An impact power supply is provided outside the equipment room 1 and is connected to the power cord 423.

[0057] like Figure 1 , Figure 2 and Figure 3 As shown, the cladding part 412 includes a cladding operating arm 4121, a cladding head 4122 and a cladding slider 4123. The cladding operating arm 4121 is a telescopic structure and is arranged radially along the equipment room 1. The cladding operating arm 4121 is fixed with a cladding head 4122 at one end close to the center of the equipment room 1, and a cladding slider 4123 is fixed at the other end of the cladding operating arm 4121. The cladding slider 4123 is controlled by the cladding drive to slide in the cladding track 13. The cladding head 4122 slides up and down with the cladding slider 4123 to realize the cladding operation on the surface of the plunger rod. The cladding operating arm 4121 can be telescopic to perform surface cladding according to plunger rods of different diameters. Shielding sheets 133 are arranged relatively in the cladding track 13. The shielding sheets 133 are arranged along the length direction of the cladding track 13 and the width is less than half of the width of the cladding track 13. A gap is left between the two shielding sheets 133. The shielding piece 133 shields part of the cladding track 13 to reduce the impact of slippage and prevent impurities and dust from splashing into the cladding track 13 .

[0058] The cladding cable 413 includes a powder delivery channel 4131, a cladding power line 4132 and an optical fiber 4133. The cladding cable 413 passes through the cladding slider 4123 and extends out of the equipment room 1 along the cladding track 13. An operating device 6 connected to the cladding cable 413 is also provided outside the equipment room 1. The operating device 6 includes a powder feeder 61, a cladding power supply 62 and a laser transmitter 63. The other end of the powder delivery channel 4131 is connected to the powder feeder 61, the other end of the cladding power line 4132 is connected to the cladding power supply 62, and the other end of the optical fiber 4133 is connected to the laser transmitter 63. The operating device 6 provides power, laser and powder delivery support for the cladding part 412.

[0059] Two vertically parallel wire wheels 131 are arranged at the top of the cladding track 13 corresponding to the cladding cable 413. The axis of the wire wheel 131 is arranged along the width direction of the cladding track 13 and both ends are positioned and rotatably installed in the equipment room 1. A wire feeding wheel 132 is also positioned and rotatably installed at the bottom of the cladding slider 4123 near the side of the cladding track 13. The axis of the wire feeding wheel 132 is also arranged along the width direction of the cladding track 13. The cladding cable 413 passes through the wire feeding wheel 132 and the two wire wheels 131 successively and passes through the through hole 16 to extend outside the equipment room 1.

[0060] like Figure 2 and Figure 3 As shown, the impact member 422 includes an impact operating arm 4221, an impact head 4222 and an impact slider 4223. The impact operating arm 4221 is a telescopic structure and is arranged radially along the equipment room 1. The impact operating arm 4221 is fixed with an impact head 4222 at one end close to the center of the equipment room 1, and the impact slider 4223 is fixed at the other end of the impact operating arm 4221. The impact member 422 is similar to the cladding member 412, and both are driven to drive the slider to achieve axial movement. A limiting plate 141 is relatively arranged in the impact track 14. The limiting plate 141 is arranged along the length direction of the impact track 14 and has a width less than half the width of the impact track 14. A gap is left between the two limiting plates 141, and the limiting plates 141 also protect the impact track 14.

[0061] like Figure 2 As shown, a through hole 16 is provided on the equipment room 1 corresponding to the cladding cable 413, and a seal 17 is provided at the through hole 16. The seal 17 includes a sealing ring 171 and an expansion ring 172. The sealing ring 171 is clamped and installed in the through hole 16, and the expansion ring 172 is extended and arranged on the sealing ring 171 and has a through hole 1721 in the middle. The expansion ring 172 is arranged on the side of the sealing ring 171 away from the equipment room 1. The powder feeder 61, the cladding power supply 62 and the laser transmitter 63 are combined into one cable to provide support for the cladding part 412 and are connected to the equipment room 1 through the through hole 16, reducing the contact between the equipment room 1 and the outside world to ensure internal sealing and stable air pressure. A through hole 16 is also provided on the equipment room 1 corresponding to the power line 423, and a seal 17 is provided at the through hole 16. The seal 17 seals the through hole 16 to reduce the interference of the external environment on the inside of the equipment room 1.

[0062] like Figure 1 and Figure 2As shown, an adjustment member 7 is also provided between the operating device 6 and the equipment room 1, and the cladding cable 413 is wound around the adjustment member 7. The adjustment member 7 includes an adjustment frame 71, an adjustment drive 72, four guide wheels 73 and a sliding wheel 74. The guide wheels 73 and the sliding wheel 74 are both positioned and rotatably installed on the adjustment frame 71. Two pairs of vertically parallel guide wheels 73 are arranged on the left and right sides above the sliding wheel 74. The sliding wheel 74 is also controlled by the adjustment drive 72 to be raised and lowered and arranged on the adjustment frame 71. The adjustment frame 71 is provided with a sliding groove 711 for the sliding wheel 74 to slide. The cladding cable 413 first passes between the right pair of guide wheels 73 and winds around the bottom of the sliding wheel 74, then passes between the left pair of guide wheels 73 and is connected to the operating device 6. Since there are many winding wires at the cladding cable 413, the adjustment member 7 is provided to facilitate the smooth sliding of the cladding cable 413 up and down, so as to realize the combing operation of the cladding cable 413, avoid the situation of the line being tangled and messy, and also avoid the safety accidents caused by the interlaced pulling of the lines.

[0063] like Figure 2 , Figure 3 and Figure 4 As shown, the magnetron workpiece 5 is arranged in the working chamber 12, and the magnetron workpiece 5 includes an operating target material 51 and an isolation assembly 52. ​​The operating target material 51 is provided with multiple and is arranged in a circular array and installed on the inner wall of the equipment room 1. The isolation assembly 52 is arranged near the top of the working chamber 12. The isolation assembly 52 includes two movable isolations 521 arranged opposite to each other in the transverse direction and two fixed isolations 522 arranged opposite to each other in the longitudinal direction. The movable isolation 521 is correspondingly arranged on the top of the cladding workpiece 41, and the fixed isolation 522 is arc-shaped and is relatively arranged in the working chamber 12.

[0064] The two movable isolations 521 are connected by a telescopic drive of a double-end shaft. Each movable isolation 521 includes two isolation plates 5211 and an isolation drive 5212 that are relatively arranged front and back. The isolation drive 5212 controls the two isolation plates 5211 to rotate relative to each other closer or farther away. The isolation plates 5211 are provided with clearance gaps 52111 corresponding to the cladding track 13 and the impact track 14. The two isolation plates 5211 are relatively engaged with each other and the isolation plates 5211 are movably arranged above the fixed isolation 522. A limiting card 5221 is also extended from the fixed isolation 522. The limiting card 5221 is radially arranged along the fixed isolation 522 and relatively arranged on both sides of the top of the fixed isolation 522. Each isolation drive 5212 includes two driving gears 52121 and a driving rack 52122. The driving rack 52122 is meshed with two driving gears 52121 on both sides. The driving gear 52121 is installed on the isolation plate 5211 and drives the isolation plate 5211 to move. The driving rack 52122 is set in the middle of the two isolation plates 5211 and is laterally slidably set above the fixed isolation 522. The driving rack 52122 is controlled by the telescopic drive of the double-end output shaft.

[0065] A method for manufacturing a lightweight plunger rod, suitable for the above-mentioned lightweight plunger rod manufacturing equipment, such as Figure 5 As shown, it includes: S1, plunger rod manufacturing, the plunger rod core is composed of the following components in weight percentage: chromium 0.5-1.5%, iron 0.5-1.5%, aluminum 4.4-5.7%, molybdenum 4.0-5.5%, titanium 85.8-90.6%, after casting, it is turned to the required size, and the surface is machined and polished; S2, cladding material preparation, the cladding layer powder is nickel-aluminum alloy powder, the mass ratio of nickel-aluminum alloy powder is: aluminum 28.8-36.1%, chromium 19-23%, iron 3.2-9.3%, molybdenum 5.7-10%, nickel 28.9%-36%, Al powder particle size range is between 100-200 mesh, The particle size range of Ni powder is between 150 and 250 meshes; S3, laser cladding, the plunger rod to be processed is installed in the working chamber 12 and driven by the fixed fixture to rotate in a circle, and the cladding workpiece 41 moves axially on the outside of the plunger rod until the surface of the plunger rod is completely clad; laser power 2200W, spot diameter 4mm, overlap rate 50%, scanning speed 0.007m / s, powder feeding speed 12g / min, nitrogen protection is used during the laser cladding process, the protective gas flow rate is 15L / min, and the thickness of the prepared cladding layer is 4mm; S4, impact strengthening, the plunger rod to be processed is installed in the working chamber 12 and driven by the fixed fixture Drive the workpiece 42 to rotate in a circle, and impact the workpiece 42 to make an axial movement on the outside of the plunger rod. Adjust the ultrasonic impact parameters to ultrasonically treat the laser cladding layer to eliminate the residual stress of the cladding layer, and adjust the hardness of the laser cladding transition layer to be located at 0.6-0.65 of the hardness span of the substrate and the magnetron sputtering layer. Use the hardness after ultrasonic impact strengthening to test the selected nickel-aluminum alloy powder ratio and laser cladding and ultrasonic impact process parameters; S5, use nanoindentation technology to test the hardness change of the cladding layer and verify the strengthening effect of ultrasonic impact. If the strengthening effect meets the requirements, determine the alloy powder ratio and cladding and ultrasonic parameters in S2-S4; if the strengthening effect does not meet the requirements, determine the alloy powder ratio and cladding and ultrasonic parameters in S2-S4; if the strengthening effect does not meet the requirements, determine the alloy powder ratio and cladding and ultrasonic parameters in S2-S4. If the requirements are met, repeat steps S2-S4 and readjust the alloy powder ratio and cladding and ultrasonic process parameters; S6, magnetron sputtering, deposit a thin film on the cladding layer to further increase the surface hardness to 1000HV, adjust the magnetron sputtering parameters, bias voltage -180V, temperature 25℃, gas flow rate 140sccm, current 6.5A, the sputtering target is a high entropy alloy target, the working gas is Ar and N2, among which N2:Ar is 0.5, the target-substrate distance is 130mm, the duty cycle is 50%, and the target atomic fraction ratio is: copper 11.2%, cobalt 22.2%, chromium 22.2%, iron 22.8%, nickel 22.8%.

[0066] Before the magnetron sputtering operation, a 15-20 minute glow sputtering pretreatment is performed to clean the target material. During the cleaning process, the target current is set to 4A, the negative bias voltage is -240V, and the duration is 15-20 minutes.

[0067] First, a rod core of a plunger rod is prepared with a lightweight alloy material and machined. Then, an alloy powder is used to laser alloy the surface of the plunger rod to form a cladding layer. During the laser cladding process, ultrasonic impact is used to continuously strengthen and eliminate the residual stress of the cladding layer, thereby enhancing the surface hardness of the plunger rod after laser cladding. Finally, magnetron sputtering is used to deposit a magnetron sputtering film on the cladding layer to further improve the surface hardness of the plunger rod and complete the manufacture of the plunger rod. This application improves the comprehensive performance of the plunger rod, such as hardness, toughness and strength. The product meets the complex environment in which an ultra-high pressure plunger pump is used without changing the structure of the plunger rod, thereby effectively reducing the manufacturing cost of the plunger rod.

[0068] like Figure 5 , Figure 6 and Figure 7 As shown, the magnetron sputtering films on the surface of the cladding layer with different aluminum contents have different microscopic morphologies. In a, the aluminum content of the cladding layer powder is 10% to 25%, and there is agglomeration. In b, the aluminum content of the cladding layer powder is 25% to 40%, and the deposition is uniform and relatively smooth. In c, the aluminum content of the cladding layer powder is greater than 40%, and the agglomeration is aggravated. Therefore, the present application selects a suitable proportion of aluminum content to achieve high performance of the magnetron sputtering film on the surface of the cladding layer, ensuring the overall quality of the subsequent plunger rod.

[0069] In d, the hardness of the cladding transition layer was not regulated by ultrasonic impact before magnetron sputtering, and there was a gap between the magnetron sputtering film and the cladding layer. In e, the hardness of the cladding transition layer was regulated by ultrasonic impact before magnetron sputtering, and the magnetron sputtering film and the cladding layer were well combined. The manufacturing quality of the plunger rod is effectively improved by setting the ultrasonic impact step to ensure the quality of the plunger rod.

[0070] According to the calculation of eccentric wear, the wear amount of the plunger rod prepared in the present application is only 0.156 of the wear amount of the conventional plunger rod. However, this is the result under the condition of constant wear efficiency. In reality, the presence of aluminum in the cladding layer promotes the deposition of nitrogen atoms in magnetron sputtering, and the surface of the deposited film is smooth and flat, which reduces the wear efficiency and can further reduce the wear amount of the plunger rod of the present invention.

[0071] The working principle and use method of the manufacturing equipment of the lightweight plunger rod are as follows: the machined plunger rod is installed in the installation fixture 3, and the upper fixture 31 and the lower fixture 32 are clamped according to the diameter of the plunger rod; the cladding workpiece 41 is started to perform the cladding operation, and the impact workpiece 42 is started at a certain interval or synchronously to operate the surface of the plunger rod; after the cladding and impact operations are completed, the cladding workpiece 41 and the reconstruction are both stored at the top of the equipment room 1, the isolation component 52 isolates the bottom from the top, and the magnetron sputtering target is started to perform the magnetron sputtering operation.

[0072] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A manufacturing device for a lightweight plunger rod, comprising a cylindrical equipment room (1), a frame (11) is arranged below the equipment room (1), a working chamber (12) is arranged inside the equipment room (1), an operating door (15) is hingedly arranged on the front side of the equipment room (1), and a control console (2) is arranged outside the equipment room (1), and the control console (2) is connected to the equipment room (1) by signal control, characterized in that: Also includes: An installation fixture (3), wherein the installation fixture (3) is relatively arranged at two ends in the working chamber (12), and the installation fixture (3) comprises an upper fixture (31) and a lower fixture (32). The upper fixture (31) is positioned and rotatably installed at the top of the working chamber (12), and the lower fixture (32) is positioned and rotatably installed at the bottom of the working chamber (12). The bottom of the lower fixture (32) extends out of the equipment room (1) and is also connected to a rotating member (33). The rotating member (33) comprises a transmission gear (331), a rotating gear (332) and a rotating motor (333). The transmission gear (331) is coaxially arranged with the lower fixture (32) and fixed to the bottom of the lower fixture (32). The rotating gear (332) is meshed with the transmission gear (331). The rotating gear (332) is also sleeved on the output shaft of the rotating motor (333). The rotating motor (333) is installed on the frame (11); A processing workpiece (4), wherein the processing workpiece (4) is installed in a working chamber (12), wherein the processing workpiece (4) comprises a cladding workpiece (41) and an impact workpiece (42) which are arranged opposite to each other, wherein a vertical cladding track (13) and an impact track (14) are respectively arranged in the working chamber (12) corresponding to the cladding workpiece (41) and the impact workpiece (42), wherein the cladding track (13) and the impact track (14) are both arranged along the axis of the working chamber (12) and fixed to the inner wall of the equipment room (1), wherein the cladding workpiece (41) comprises a cladding drive, a cladding component (412) and a cladding cable (413), wherein the cladding drive controls the cladding The component (412) is slidably arranged on the cladding track (13); one end of the cladding cable (413) is connected to the cladding component (412) and slides vertically with the cladding component (412), and the other end extends out of the equipment room (1); the impact workpiece (42) comprises an impact drive, an impact component (422) and a power line (423); the impact drive controls the impact component (422) to be slidably arranged on the impact track (14); one end of the power line (423) is connected to the impact component (422) and slides vertically with the impact component (422), and the other end extends out of the equipment room (1); an impact power supply is arranged outside the equipment room (1) and is connected to the power line (423); A magnetron workpiece (5), the magnetron workpiece (5) being arranged in a working chamber (12), the magnetron workpiece (5) comprising an operating target (51) and an isolation assembly (52), the operating target (51) being provided with a plurality of targets and being arranged in a circular array on the inner wall of an equipment chamber (1), the isolation assembly (52) being arranged in the working chamber (12) near the top, the isolation assembly (52) comprising two movable isolations (521) arranged opposite to each other and two fixed isolations (522) arranged opposite to each other, the movable isolations (521) being arranged correspondingly at the top of a cladding workpiece (41) and an impact workpiece (42), the fixed isolations (522) being arc-shaped and being arranged opposite to each other in the working chamber (12).

2. A lightweight plunger rod manufacturing device according to claim 1, characterized in that: The upper clamp (31) comprises an upper jaw disc body (311), three upper jaw bodies (312) and an upper jaw drive (313), wherein the upper jaw drive (313) is arranged in the upper jaw disc body (311) to control the three upper jaw bodies (312) to move relative to each other along the radial direction of the upper jaw disc body (311); the lower clamp (32) comprises a lower jaw disc body (321), three lower jaw bodies (322) and a lower jaw drive (323), wherein the lower jaw drive (323) is arranged in the lower jaw disc body (321) to control the three lower jaw bodies (322) to move relative to each other along the radial direction of the lower jaw disc body (321), and a rolling bearing (3211) is sleeved near the bottom outer wall of the lower jaw disc body (321), wherein the rolling bearing (3211) is key-connected to the lower jaw disc body (321), and the rolling bearing (3211) is positioned and rotatably installed at the bottom of the equipment room (1).

3. The manufacturing equipment for a lightweight plunger rod according to claim 1, characterized in that: The cladding component (412) comprises a cladding operating arm (4121), a cladding head (4122) and a cladding slider (4123); the cladding operating arm (4121) is a telescopic structure and is arranged radially along the equipment room (1); the cladding operating arm (4121) is fixed with a cladding head (4122) at one end close to the center of the equipment room (1); the cladding operating arm (4121) is fixed with a cladding slider (4123) at the other end; the cladding slider (4123) is controlled by a cladding drive to slide in a cladding track (13); the cladding cable (413) comprises a powder feeding channel (4131), a cladding component power line (4132), and a cladding component power line (4133). The cladding cable (4132) and the optical fiber (4133) are connected to the cladding cable (413) through the cladding slider (4123) and extend out of the equipment room (1) along the cladding track (13). An operating device (6) connected to the cladding cable (413) is also arranged outside the equipment room (1). The operating device (6) includes a powder feeder (61), a cladding power supply (62) and a laser emitter (63). The other end of the powder feeding channel (4131) is connected to the powder feeder (61), the other end of the cladding power supply line (4132) is connected to the cladding power supply (62), and the other end of the optical fiber (4133) is connected to the laser emitter (63).

4. A lightweight plunger rod manufacturing device according to claim 3, characterized in that: The equipment room (1) is provided with a through hole (16) corresponding to the cladding cable (413), and a sealing member (17) is provided at the through hole (16). The sealing member (17) comprises a sealing ring (171) and an expansion ring (172). The sealing ring (171) is mounted in the through hole (16) by snapping, and the expansion ring (172) is extended on the sealing ring (171) and has a through hole (1721) in the middle. The expansion ring (172) is arranged on the side of the sealing ring (171) away from the equipment room (1); two vertically parallel conducting wires are provided at the top of the cladding track (13) corresponding to the cladding cable (413). A wire wheel (131) is provided, the axis of the wire wheel (131) is arranged along the width direction of the cladding track (13) and is positioned and rotatably installed in the equipment room (1); a wire feeding wheel (132) is also positioned and rotatably installed on the side of the cladding slider (4123) close to the cladding track (13); the axis of the wire feeding wheel (132) is also arranged along the width direction of the cladding track (13); shielding plates (133) are arranged opposite to each other in the cladding track (13); the shielding plates (133) are arranged along the length direction of the cladding track (13) and have a width less than half the width of the cladding track (13); and a gap is left between the two shielding plates (133).

5. The manufacturing equipment for a lightweight plunger rod according to claim 4, characterized in that: An adjusting member (7) is also provided between the operating device (6) and the equipment room (1), the cladding cable (413) is wound around the adjusting member (7), the adjusting member (7) comprises an adjusting frame (71), an adjusting drive (72), a plurality of guide wheels (73) and a sliding wheel (74), the guide wheels (73) and the sliding wheel (74) are both positioned and rotatably mounted on the adjusting frame (71), the guide wheels (73) are arranged in pairs and are arranged on both sides of the sliding wheel (74), the sliding wheel (74) is also controlled by the adjusting drive (72) to be raised and lowered and arranged on the adjusting frame (71), and a sliding groove (711) is provided on the adjusting frame (71) for the sliding wheel (74) to slide.

6. The manufacturing equipment for a lightweight plunger rod according to claim 1, characterized in that: The impact member (422) comprises an impact operating arm (4221), an impact head (4222) and an impact slider (4223); the impact operating arm (4221) is a telescopic structure and is arranged radially along the equipment chamber (1); the impact head (4222) is fixed at one end of the impact operating arm (4221) close to the center of the equipment chamber (1); the impact slider (4223) is fixed at the other end of the impact operating arm (4221); a through hole (16) is also provided on the equipment chamber (1) corresponding to the power line (423); a sealing member (17) is provided at the through hole (16); and a limiting piece (141) is relatively arranged in the impact track (14); the limiting piece (141) is arranged along the length direction of the impact track (14) and has a width less than half the width of the impact track (14); and a gap is left between the two limiting pieces (141).

7. The manufacturing equipment for a lightweight plunger rod according to claim 1, characterized in that: The two movable isolators (521) are connected by a telescopic drive of a double-end shaft. Each movable isolator (521) comprises two relatively arranged isolation plates (5211) and an isolation drive (5212). The isolation drive (5212) controls the relative movement of the two isolation plates (5211). The isolation plates (5211) are positioned and rotatably installed above the fixed isolators (522). The isolation plates (5211) are provided with clearance notches (52111) corresponding to the cladding track (13) and the impact track (14). Each fixed isolator (522) is also provided with two limiting cards (5221), and the limiting cards (5221) are relatively arranged on both sides of the fixed isolator (522).

8. The manufacturing equipment for a lightweight plunger rod according to claim 7, characterized in that: Each of the isolation drives (5212) comprises two drive gears (52121) and a drive rack (52122), the two sides of the drive rack (52122) are respectively meshed with the two drive gears (52121), the drive gear (52121) is installed on the isolation plate (5211) and drives the isolation plate (5211) to move, the drive rack (52122) is arranged in the middle of the two isolation plates (5211) and is laterally slidably arranged above the fixed isolation (522), and the drive rack (52122) is controlled by the telescopic drive of the double-end output shaft.

9. A method for manufacturing a lightweight plunger rod, characterized in that: A manufacturing device for a lightweight plunger rod according to any one of claims 1 to 8, comprising: S1. Manufacturing of plunger rod. The plunger rod core is composed of the following components in weight percentage: 0.5-1.5% chromium, 0.5-1.5% iron, 4.4-5.7% aluminum, 4.0-5.5% molybdenum, 85.8-90.6% titanium. After melting and casting, it is turned to the required size and the surface is machined and polished; S2. Preparation of cladding materials. Nickel-aluminum alloy powder is used as the cladding layer powder. The mass ratio of nickel-aluminum alloy powder is: aluminum 28.8-36.1%, chromium 19-23%, iron 3.2-9.3%, molybdenum 5.7-10%, nickel 28.9%-36%, Al powder particle size range is between 100-200 mesh, Ni powder particle size range is between 150-250 mesh; S3, laser cladding, the plunger rod to be processed is installed in the working chamber (12) and driven by the installation fixture (3) to rotate in a circle, and the cladding workpiece (41) moves axially on the outside of the plunger rod until the surface of the plunger rod is completely clad; laser power 2200W, spot diameter 4mm, overlap rate 50%, scanning speed 0.007m / s, powder feeding speed 12g / min, nitrogen protection is used during the laser cladding process, the protective gas flow rate is 15L / min, and the prepared cladding layer thickness is 4mm; S4, impact strengthening, the plunger rod to be processed is installed in the working chamber (12) and driven by the installation fixture (3) to rotate in a circle, and the impact workpiece (42) is axially moved on the outside of the plunger rod, and the ultrasonic impact parameters are adjusted to ultrasonically treat the laser cladding layer to eliminate the residual stress of the cladding layer, and the hardness of the laser cladding transition layer is adjusted to be 0.6 to 0.65 of the hardness span of the substrate and the magnetron sputtering layer. The hardness after ultrasonic impact strengthening is used to test the selected nickel-aluminum alloy powder ratio and the laser cladding and ultrasonic impact process parameters; S5. Use nano-indentation technology to check the hardness change of the cladding layer and verify the strengthening effect of ultrasonic impact. If the strengthening effect meets the requirements, determine the alloy powder ratio and cladding and ultrasonic parameters in S2-S4; if the strengthening effect does not meet the requirements, repeat steps S2-S4 to readjust the nickel-aluminum alloy powder ratio and cladding process and ultrasonic process parameters; S6. Magnetron sputtering was used to deposit a thin film on the cladding layer to further increase the surface hardness to 1000 HV. The magnetron sputtering parameters were adjusted to a bias voltage of -180 V, a temperature of 25 °C, a gas flow rate of 140 sccm, a current of 6.5 A, a high entropy alloy target as the sputtering target, and working gases of Ar and N2, wherein the ratio of N2:Ar was 0.

5. The target-substrate distance was 130 mm, the duty cycle was 50%, and the target atomic fraction ratio was: 11.2% copper, 22.2% cobalt, 22.2% chromium, 22.8% iron, and 22.8% nickel.

10. A method for manufacturing a lightweight plunger rod according to claim 9, characterized in that: Before the magnetron sputtering operation, a 15-20 minute glow sputtering pretreatment is performed to clean the target material. The target current is set to 4A, the negative bias voltage is -240V, and the duration is 15-20 minutes.

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