CN217709644U - Automatic cooling device for hot spraying processing of slender piston rod - Google Patents
Automatic cooling device for hot spraying processing of slender piston rod Download PDFInfo
- Publication number
- CN217709644U CN217709644U CN202221768829.2U CN202221768829U CN217709644U CN 217709644 U CN217709644 U CN 217709644U CN 202221768829 U CN202221768829 U CN 202221768829U CN 217709644 U CN217709644 U CN 217709644U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- cooling
- temperature
- air
- infrared thermometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Spray Control Apparatus (AREA)
Abstract
The utility model discloses an automatic cooling device for hot spraying of long and thin piston rod processing belongs to piston rod processing technology field, include: the temperature-sensing cooling device comprises a frame, a plurality of temperature-sensing cooling assemblies, an air supply system and a control unit. The rack is provided with an installation station for clamping the piston rod, and the rack can drive the piston rod to rotate; each temperature sensing cooling assembly comprises an infrared thermometer for detecting the surface temperature of the piston rod and a cooling air nozzle for blowing compressed air to the piston rod; the air supply system is communicated with each cooling air nozzle through a plurality of air pipelines; the control unit is electrically connected with each infrared thermometer and each electromagnetic valve; the utility model discloses a multiple spot cloth accuse automatically cooling can prevent on the one hand that long and thin piston rod hot spraying in-process from because of the deformation and the coating performance defect that the temperature inequality leads to, and on the other hand can avoid long and thin piston rod overheated, reduces and stops the rifle because of the work piece is overheated and carry out the refrigerated time in the course of working, has effectively improved work efficiency.
Description
Technical Field
The utility model belongs to the technical field of the piston rod processing technique and specifically relates to an automatic cooling device for processing of long and thin piston rod hot spraying is related to.
Background
The long and thin piston rod is an important component of the long-stroke hydraulic oil cylinder and is widely applied to the fields of ships, water conservancy, nuclear power and the like. In order to improve the surface performance of the slender piston rod, an anticorrosive wear-resistant alloy or ceramic coating is generally prepared on the surface of the slender piston rod in a thermal spraying mode.
The publication No. CN214390734U provides a thermal spraying workpiece positioning device, the general processing mode of thermal spraying on the surface of a slender piston rod is that a machine tool clamps the slender piston rod to rotate, a thermal spraying gun is perpendicular to the slender piston rod and performs spraying along the axial reciprocating motion of the slender piston rod, and in order to cool the slender piston rod, a tuyere is generally arranged near the thermal spraying gun and performs purging through synchronous motion of the tuyere. The cooling mode has a simple structure, but mainly has the following problems for the thermal spraying processing of the slender piston rod: on one hand, because the length of the spraying part of the slender piston rod is large, the temperature of the slender piston rod is uneven due to local heating and local cooling in the reciprocating motion process of the thermal spraying gun, so that deformation or coating defects are caused; on the other hand, the cooling efficiency of the air nozzle in the existing cooling mode is low, and the surface temperature of the long and thin piston rod cannot be detected in real time, so that manual temperature measurement is needed, the gun needs to be stopped to cool the workpiece when the temperature is too high, and the working efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide an automatic cooling device for processing of long and thin piston rod hot spraying, can realize the automatically cooling of long and thin piston rod hot spraying in-process, reduce the deformation that long and thin piston rod leads to because of being heated inequality or high temperature, improve hot spraying coating quality and production machining efficiency.
In order to achieve the above technical object, the technical solution of the present invention provides an automatic cooling device for hot spraying processing of a slender piston rod, including:
the piston rod clamping device comprises a rack, wherein a mounting station for clamping a piston rod is arranged on the rack, and the rack can drive the piston rod to rotate;
the temperature sensing cooling assemblies are sequentially arranged along the length direction of the mounting station, and each temperature sensing cooling assembly comprises an infrared thermometer for detecting the surface temperature of the piston rod and a cooling air nozzle for blowing compressed air to the piston rod;
the air supply system is communicated with each cooling air nozzle through a plurality of air pipelines and is used for providing dry and clean compressed air for the cooling air nozzles through the air pipelines, and each air pipeline is provided with an electromagnetic valve;
and the control unit is electrically connected with each infrared thermometer and each electromagnetic valve and is used for receiving the temperature signals measured by the infrared thermometers to generate driving signals for respectively driving each electromagnetic valve to open and close.
In some embodiments, the control unit comprises a PLC and a touch screen, the touch screen is electrically connected to the PLC, and the PLC is electrically connected to each of the infrared thermometers and the electromagnetic valves.
In some embodiments, the air supply system comprises a freeze dryer, an air storage tank and an air compressor, and the air inlet end of the air pipeline is connected with the freeze dryer, the air storage tank and the air compressor in sequence.
In some embodiments, the frame includes a base, a chuck and a tailstock, the chuck and the tailstock are respectively connected with the base, a mounting station is formed between the chuck and the tailstock, the tailstock is provided with a tip and a cylinder, the cylinder is connected with the tip and used for driving the tip to move towards one side close to or away from the chuck, the chuck and the tailstock are both connected with the base, and the plurality of temperature-sensitive cooling assemblies are arranged on the base.
In some embodiments, the distance between the two temperature sensitive cooling assemblies is less than 300mm.
In some embodiments, a mounting plate is arranged at a position, corresponding to the temperature-sensing cooling assembly, on the machine frame, the length of the mounting plate is the same as that of the mounting station, and the cooling air nozzle and the infrared thermometer are mounted on the mounting plate through a locking nut combination.
In some embodiments, the infrared thermometer has a stainless steel housing, the measurement temperature of the infrared thermometer ranges from 0 ℃ to 500 ℃, and the measurement accuracy of the infrared thermometer does not exceed ± 1% of the measurement value.
In some embodiments, the infrared detection end of the infrared thermometer and the air opening of the cooling air nozzle are opposite to the installation station.
In some embodiments, the cooling tuyere head is a round or flat type structure.
In some embodiments, the tail of the cooling tuyere is provided with a quick connector, and the cooling tuyere is connected with the gas pipeline through the quick connector.
Compared with the prior art, the beneficial effects of the utility model include: through the temperature-sensing cooling assembly, the gas supply system and the control unit, the device generates compressed gas by the gas supply system, the compressed gas is blown to the piston rod from the cooling air nozzle through a gas pipeline to realize cooling of the piston rod, the temperature-sensing cooling assembly is sequentially arranged along the length direction of the installation station to realize multipoint distribution and control cooling, and deformation and coating performance defects caused by uneven temperature in the thermal spraying process of the slender piston rod can be prevented; the control unit receives temperature signals measured by the infrared thermometer and generates driving signals for respectively driving the electromagnetic valves to open and close, so that the electromagnetic valves can control the on-off of compressed air of different gas pipelines according to the detection temperature of the infrared thermometer, the automatic cooling in the hot spraying processing process of the long and thin piston rod can be realized, the deformation of the long and thin piston rod caused by uneven heating or overhigh temperature is reduced, and the quality of a hot spraying coating and the production processing efficiency are improved.
Drawings
Fig. 1 is a schematic overall front view of an embodiment of the automatic cooling device for hot spray machining of an elongated piston rod according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic structural diagram of an air supply system of an embodiment of the automatic cooling device for the thermal spraying processing of the slender piston rod according to the present invention.
In the figure: 1. a frame; 11. a base; 12. a chuck; 13. a tailstock; 14. installing a station; 2. a temperature sensing cooling assembly; 21. an infrared thermometer; 22. cooling the blast nozzle; 3. a gas supply system; 31. a freeze dryer; 32. a gas storage tank; 33. an air compressor; 4. a control unit; 5. a gas line; 6. an electromagnetic valve; 7. mounting a plate; 8. locking the nut; 9. a quick coupling.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, the utility model provides an automatic cooling device for hot spraying processing of a slender piston rod, which comprises: the temperature-sensing cooling device comprises a frame 1, a plurality of temperature-sensing cooling assemblies 2, an air supply system 3 and a control unit 4.
The frame 1 is provided with an installation station 14 for clamping the piston rod, and the frame 1 can drive the piston rod to rotate.
The temperature-sensing cooling assemblies 2 are sequentially arranged along the length direction of the installation station 14, and each temperature-sensing cooling assembly 2 comprises an infrared thermometer 21 used for detecting the surface temperature of the piston rod and a cooling air nozzle 22 used for blowing compressed air to the piston rod.
The air supply system 3 is communicated with each cooling tuyere 22 through a plurality of air pipelines 5 and is used for supplying dry and clean compressed air to the cooling tuyere 22 through the air pipelines 5, and each air pipeline 5 is provided with an electromagnetic valve 6.
The control unit 4 is electrically connected with each infrared thermometer 21 and each electromagnetic valve 6, and the control unit 4 is used for receiving the temperature signals measured by the infrared thermometers 21 to generate driving signals for respectively driving each electromagnetic valve 6 to open and close.
In the device, the piston rod is transversely arranged on the installation station 14 during machining, the temperature-sensing cooling components 2 are sequentially arranged along the length direction of the installation station 14, the air supply system 3 can supply dry and clean compressed air to the piston rod through a plurality of gas pipelines 5, each cooling air nozzle 22 can blow and control the compressed air to the piston rod at multiple points along the length direction of the piston rod, the control unit 4 is electrically connected with each infrared thermometer 21 and each electromagnetic valve 6, the infrared thermometers 21 can perform fixed-point detection on the surface temperature of the piston rod and receive temperature signals measured by the infrared thermometers 21, the control unit 4 generates driving signals for respectively driving the electromagnetic valves 6 to open and close according to the temperature detected by the infrared thermometers 21, the electromagnetic valves 6 corresponding to the infrared thermometers 21 are driven to open and close, and automatic cooling in the hot spraying machining process of the long and thin piston rod can be realized.
Further, the control unit 4 can enter a start cooling temperature setting value (that is, when the surface temperature of the piston rod is higher than the temperature, the piston rod needs to be cooled to ensure normal processing of the piston rod) and an end cooling temperature setting value (that is, when the surface temperature of the piston rod is against the temperature, the piston rod does not need to be cooled and normal processing of the piston rod is not affected) and compare the start cooling temperature setting value with the detection temperature of the infrared thermometer 21, when the detection temperature is higher than the start cooling temperature setting value set by the control unit 4, the control unit 4 can drive the electromagnetic valve 6 corresponding to the infrared thermometer 21 to be opened, so that the cooling air nozzle 22 can introduce compressed gas to purge and cool the piston rod, and when the detection temperature is against the end cooling temperature setting value set by the control unit 4, the control unit 4 can drive the electromagnetic valve 6 corresponding to the infrared thermometer 21 to be closed to block the circulation of the compressed gas, so that the cooling air nozzle 22 stops cooling the piston rod.
Further, the model of the infrared thermometer 21 is BRW600-6WB.
As shown in fig. 1, in some embodiments, the control unit 4 includes a PLC and a touch screen, the touch screen is electrically connected to the PLC, the PLC is electrically connected to each of the infrared thermometers 21 and the electromagnetic valve 6, specifically, the PLC is used for collecting signals of the infrared thermometers 21 and controlling the electromagnetic valve 6 on the gas pipeline 5, the touch screen is used for selecting a connected pipeline and setting a cooling start temperature and a cooling end temperature of each pipeline, when in use, the cooling start temperature and the cooling end temperature are set in the touch screen, after the infrared thermometers 21 at different positions detect the surface temperature of the piston rod, a signal is transmitted to the PLC, and after the PLC recognizes the temperature, the PLC determines whether to open the electromagnetic valve 6 of the corresponding pipeline in the gas distribution box.
Further, the rack 1 comprises a base 11, a chuck 12 and a tailstock 13, the chuck 12 and the tailstock 13 are respectively connected with the base 11, an installation station 14 is formed between the chuck 12 and the tailstock 13, the chuck 12 and the tailstock 13 are respectively arranged at two ends of the installation station 14, the tailstock 13 is provided with a tip and an air cylinder, the air cylinder is connected with the tip and used for driving the tip to move towards one side close to or away from the chuck 12, the chuck 12 and the tailstock 13 are both connected with the base 11, the temperature-sensing cooling assemblies 2 are all arranged on the base 11, the chuck 12 and the tailstock 13 are preferably a three-jaw chuck, one end of the piston rod can be clamped by the chuck 12, the tailstock 13 is located at the other end of the piston rod, the tip of the tailstock 13 corresponds to a central shaft of the piston rod, the cylinder is used for driving the tip to approach the piston rod, the piston rod is clamped between the chuck 12 and the tailstock 13, namely, the piston rod can be fixed, further, the tip is rotatably connected with one end of the air cylinder, a motor is arranged in the base 11 and can drive the piston rod to rotate, so as to further drive the piston rod to rotate, the chuck to rotate when the hot spraying machine works, and the hot spraying machine rack 1 can be installed at high in stability.
Furthermore, the distance between the two temperature-sensing cooling assemblies 2 is smaller than 300mm, so that the number of the temperature-sensing cooling assemblies 2 is determined according to the length of the slender piston rod, and the temperature-sensing cooling assemblies 2 are arranged at intervals of about 300mm during thermal spraying processing of the piston rod so as to detect the temperatures of different parts of the piston rod and cool the piston rod.
Furthermore, a mounting plate 7 is arranged at a position, corresponding to the temperature-sensing cooling assembly 2, on the frame 1, the length of the mounting plate 7 is the same as that of the mounting station 14, the cooling air nozzle 22 and the infrared thermometer 21 are assembled and mounted on the mounting plate 7 through a locking nut 8, and the infrared thermometer 21 and the cooling air nozzle 22 are connected with the mounting plate 7 through the mounting plate 7, so that the mounting mode is simple and convenient, the length of the mounting plate 7 is the same as that of the mounting station 14, and the temperature-sensing cooling assembly 2 can perform temperature-sensing cooling on a piston rod in the mounting station 14.
Further, the infrared thermometer 21 has a stainless steel housing, the measurement temperature range of the infrared thermometer 21 is 0-500 ℃, the measurement precision of the infrared thermometer 21 does not exceed plus or minus 1% of the measurement value, the adaptability of the infrared thermometer 21 is wide, and the measurement precision is high.
Further, an infrared detection end of the infrared thermometer 21 and an air port of the cooling air nozzle 22 are opposite to the installation station 14; the head of the cooling air nozzle 22 is of a round or flat structure, when the cooling air nozzle is used, compressed gas can be intensively discharged to the piston rod through the cooling air nozzle 22, and the infrared detection end of the infrared thermometer 21 can be over against the piston rod in the installation station 14 for detection.
Furthermore, the tail part of the cooling air nozzle 22 is provided with a quick coupling 9, the cooling air nozzle 22 is connected with the gas pipeline 5 through the quick coupling 9, and the quick coupling 9 is arranged, so that the gas pipeline 5 and the quick coupling 9 can be assembled and disassembled conveniently.
Furthermore, the automatic cooling device also comprises a gas distribution box, the part of the gas pipeline, which is provided with the electromagnetic valve 6, is arranged in the gas distribution box, and the gas pipeline part in the gas distribution box is connected with the gas pipeline part connected with the cooling air nozzle 22 through a quick joint 9, so that the gas pipeline is convenient to assemble, disassemble and maintain.
As shown in fig. 3, in some embodiments, the air supply system 3 includes a freeze dryer 31, an air tank 32 and an air compressor 33, and the air inlet end of the air pipeline 5 is connected to the freeze dryer 31, the air tank 32 and the air compressor 33 in sequence, specifically, the air compressor 33 in the air supply system 3 is a screw air compressor 33 or a piston air compressor 33 for providing compressed air; the air storage tank 32 is used for storing and providing stable compressed air, and the pressure bearing range of the air storage tank is more than 0.8MPa; the freeze dryer 31 is of an air-cooling type or a water-cooling type, and is used to reduce the water content in the compressed air, so that the freeze dryer 31, the air tank 32, and the air compressor 33 can supply dry and clean compressed air to the cooling air nozzle 22.
The working principle is as follows: firstly, a piston rod is fixed through a chuck 12 and a tail frame 13 on a base 11, then a proper mounting plate 7 is selected according to the length of the slender piston rod and fixed at the lower end of the slender piston rod, an infrared thermometer 21 and a cooling air nozzle 22 are combined and fixed on the mounting plate 7 through a locking nut 8, the distance between the infrared thermometers 21 is kept to be not more than 300mm, then a quick connector 9 at the tail part of the cooling air nozzle 22 is connected with a gas distribution box through a gas pipe, the infrared thermometers 21 and an electromagnetic valve 6 are connected with a control unit 4 through control lines, after the required pipelines and circuits are mounted, the cooling starting temperature and the cooling stopping temperature of each detection part are set on a touch screen of the control unit 4, after the setting is finished, the hot spraying piston rod can be rotated, a spray gun starts to reciprocate to perform slender machining, when the infrared thermometers 21 detect that the temperature of the piston rod is higher than the set cooling starting temperature value in the machining process, the control unit 4 drives the electromagnetic valve 6 to be opened, a gas supply system 3 to generate compressed gas, and the compressed gas is blown to the piston rod from the cooling air nozzle 22 through a gas pipeline 5; when the infrared thermometer 21 detects that the temperature of the piston rod is in the set stop cooling temperature value, the control unit 4 drives the electromagnetic valve 6 to close, and the cooling of the piston rod is finished.
The utility model discloses a temperature sensing cooling module 2, air supply system 3 and the control unit 4 that set up, the device produces compressed gas by air supply system 3, and compressed gas blows to the piston rod from cooling tuyere 22 via gas line 5, realizes the cooling to the piston rod, and temperature sensing cooling module 2 arranges along 14 length directions of installation station in proper order, realizes the multiple spot cloth accuse cooling, can prevent deformation and coating performance defect that the long and thin piston rod hot spraying process leads to because of the temperature inequality; the control unit 4 receives temperature signals measured by the infrared thermometer 21 to generate driving signals for respectively driving the electromagnetic valves 6 to open and close, so that the electromagnetic valves 6 can control the on-off of compressed air of different gas pipelines 5 according to the detection temperature of the infrared thermometer 21, the automatic cooling in the process of hot spraying of the long and thin piston rod can be realized, the deformation of the long and thin piston rod caused by uneven heating or overhigh temperature is reduced, and the quality of a hot spraying coating and the production and processing efficiency are improved.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An automatic cooling apparatus for thermal spray machining of an elongated piston rod, comprising:
the piston rod clamping device comprises a rack, wherein a mounting station for clamping a piston rod is arranged on the rack, and the rack can drive the piston rod to rotate;
the temperature sensing cooling assemblies are sequentially arranged along the length direction of the mounting station, and each temperature sensing cooling assembly comprises an infrared thermometer for detecting the surface temperature of the piston rod and a cooling air nozzle for blowing compressed air to the piston rod;
the air supply system is communicated with each cooling air nozzle through a plurality of air pipelines and is used for providing dry and clean compressed air for the cooling air nozzles through the air pipelines, and each air pipeline is provided with an electromagnetic valve;
the control unit is electrically connected with each infrared thermometer and each electromagnetic valve and is used for receiving temperature signals measured by the infrared thermometers to generate driving signals for respectively driving the electromagnetic valves to open and close.
2. The automatic cooling device for the hot spray machining of the elongated piston rod as claimed in claim 1, wherein the control unit comprises a PLC and a touch screen, the touch screen is electrically connected with the PLC, and the PLC is electrically connected with each infrared thermometer and each electromagnetic valve.
3. The automatic cooling device for the hot spraying processing of the slender piston rod as claimed in claim 1, wherein the gas supply system comprises a freeze dryer, a gas storage tank and an air compressor, and a gas inlet end of the gas pipeline is connected with the freeze dryer, the gas storage tank and the air compressor in sequence.
4. The automatic cooling device for the hot spraying processing of the elongated piston rod as claimed in claim 1, wherein the frame comprises a base, a chuck and a tailstock, the chuck and the tailstock are respectively connected with the base, an installation station is formed between the chuck and the tailstock, the tailstock is provided with a tip and an air cylinder, the air cylinder is connected with the tip and used for driving the tip to move towards one side close to or away from the chuck, the chuck and the tailstock are both connected with the base, and the plurality of temperature-sensitive cooling assemblies are all arranged on the base.
5. The automatic cooling device for elongate piston rod thermal spray machining of claim 1 wherein the distance between the two temperature sensitive cooling assemblies is less than 300mm.
6. The automatic cooling device for the hot spraying processing of the elongated piston rod as claimed in claim 1, wherein a mounting plate is arranged at a position on the rack corresponding to the temperature-sensitive cooling assembly, the length of the mounting plate is the same as that of a mounting station, and the cooling air nozzle and the infrared thermometer are mounted on the mounting plate through a lock nut combination.
7. The automatic cooling device for the hot spraying processing of the elongated piston rod as claimed in claim 1, wherein the infrared thermometer has a stainless steel housing, the measuring temperature range of the infrared thermometer is 0-500 ℃, and the measuring precision of the infrared thermometer is not more than ± 1% of the measured value.
8. The automatic cooling device for the thermal spraying processing of the slender piston rod as claimed in claim 1, wherein an infrared detection end of the infrared thermometer and a tuyere of the cooling tuyere are both opposite to the mounting station.
9. The automatic cooling device for elongate piston rod thermal spray machining of claim 1 wherein the cooling tuyere head is of a round or flat type configuration.
10. The automatic cooling device for the hot spray machining of the long and thin piston rod of claim 1 is characterized in that a quick connector is arranged at the tail part of the cooling air nozzle, and the cooling air nozzle is connected with a gas pipeline through the quick connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221768829.2U CN217709644U (en) | 2022-07-08 | 2022-07-08 | Automatic cooling device for hot spraying processing of slender piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221768829.2U CN217709644U (en) | 2022-07-08 | 2022-07-08 | Automatic cooling device for hot spraying processing of slender piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217709644U true CN217709644U (en) | 2022-11-01 |
Family
ID=83776749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221768829.2U Active CN217709644U (en) | 2022-07-08 | 2022-07-08 | Automatic cooling device for hot spraying processing of slender piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217709644U (en) |
-
2022
- 2022-07-08 CN CN202221768829.2U patent/CN217709644U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7578451B2 (en) | Apparatus for thermal spraying | |
| CN205246401U (en) | Maintain medium temperature sampling probe less | |
| CN217709644U (en) | Automatic cooling device for hot spraying processing of slender piston rod | |
| CN113640648A (en) | High-low temperature heat flow instrument for chip reliability test | |
| CN116678772A (en) | Turbine blade thermal barrier coating service environment simulation test platform and method | |
| CN112936021A (en) | Thin-wall large-caliber aspheric carbon fiber composite high-performance part grinding equipment | |
| CN218032659U (en) | Multi-equipment high-temperature high-pressure gas supply system | |
| CN209021360U (en) | The automatic air ballooning unit of Double end chamfering machine | |
| CN110314826A (en) | Spraying and curing method and spraying and curing equipment for protecting heating core | |
| CN113340556B (en) | Global overtemperature monitoring and temperature control auxiliary system for plate heater | |
| CN210974848U (en) | Supersonic flame spraying and induction remelting composite processing device for revolving body part | |
| CN112903276A (en) | Open turbine blade test equipment | |
| CN109252127B (en) | A kind of plate clamping device used for hot spraying and working method | |
| CN210705601U (en) | Cooling forming device for processing PE pipe | |
| CN211626082U (en) | Novel bell jar sintering furnace for sintering magnetic materials | |
| CN103737138A (en) | Large-size refrigeration plate accurate furnace welding method | |
| CN110207904B (en) | Leakage pressure difference detection device and detection method thereof | |
| CN110411883B (en) | Thermal fatigue test device | |
| CN220659841U (en) | High-speed accurate work piece cold and hot assembly machine | |
| CN100503140C (en) | Renovation technique of combustion turbine transition section | |
| CN221883413U (en) | Slit corrosion test device for bimetal composite material | |
| CN213813227U (en) | Scouring test device | |
| CN211102270U (en) | Electronic expansion valve welding machine | |
| CN117086691A (en) | Liquid nitrogen spray pipe regulating and controlling device | |
| CN221926080U (en) | Intensity detection equipment for processing surface strengthening agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Two road 430030 in Hubei province in Qiaokou District of Wuhan city Baofeng No. 126 Patentee after: Wuhan Material Protection Research Institute Co., Ltd. of China National Machinery Engineering Corp. Address before: Two road 430030 in Hubei province in Qiaokou District of Wuhan city Baofeng No. 126 Patentee before: WUHAN RESEARCH INSTITUTE OF MATERIALS PROTECTION Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |