CN112024619A - Online oil injection lubricating system of small-caliber cold pipe blank unit - Google Patents
Online oil injection lubricating system of small-caliber cold pipe blank unit Download PDFInfo
- Publication number
- CN112024619A CN112024619A CN202010919694.4A CN202010919694A CN112024619A CN 112024619 A CN112024619 A CN 112024619A CN 202010919694 A CN202010919694 A CN 202010919694A CN 112024619 A CN112024619 A CN 112024619A
- Authority
- CN
- China
- Prior art keywords
- oil
- pipe blank
- small
- pipe
- inner hole
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B2045/026—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for tubes
Abstract
The invention discloses an online oil injection lubricating system of a small-caliber cold pipe blank unit, which comprises a pipe blank inner hole oil injection assembly, a pipe blank outer surface oil injection assembly and at least one intelligent oil supply assembly, wherein the pipe blank inner hole oil injection assembly partially extends into a pipe blank to inject oil into an inner hole of the pipe blank, the front part of the pipe blank is also provided with a roller for rolling the pipe blank, the pipe blank outer surface oil injection assembly injects oil to a contact part of the pipe blank and the roller, the intelligent oil supply assembly comprises an upper industrial personal computer, a vector frequency converter and a hydraulic pump, the hydraulic pump is connected with an oil tank, and the upper industrial personal computer adjusts the oil supply amount of the hydraulic pump to the pipe blank inner hole oil injection. Through the mode, the quality of the inner surface and the outer surface of the small-caliber stainless steel pipe can be remarkably improved, and various surface quality problems of surface roughening, rolling fracture, microcrack and the like caused by oil loss of the inner surface and the outer surface of the small-caliber stainless steel seamless pipe in a rolling process with large deformation are effectively solved.
Description
Technical Field
The invention relates to the field of metal forming equipment, in particular to an online oil injection lubricating system of a small-caliber cold pipe blank unit.
Background
In the production process of the seamless steel tube, the inner surface and the outer surface of the small-caliber seamless steel tube need to be lubricated on line so as to reduce rolling friction and prevent the inner surface and the outer surface of the tube blank from generating cracks and rolling burrs due to excessive friction. Because rotation and feeding are needed to be realized simultaneously in the rolling process, and the speed is high, the lubrication in the seamless steel pipe rolling process needs to meet the requirements, and the pipe rolling phenomenon is easy to occur once the lubrication is lost.
In the existing production process, a simple flow control system cannot perform real-time control according to the size, specification and material of a tube blank, so that the influence on the quality of a finished tube is large, and in addition, the control system is immature in technology and not high in control precision, so that the control requirements on high precision and high speed of liquid flow cannot be met. Based on the method, the on-line oil-spraying lubrication intelligent control system of the small-caliber cold-rolled tube unit is invented. The system can control the spraying of the lubricating oil in real time according to the size, specification and material of the tube blank, effectively reduces the friction influence between the inner surface of the small-caliber seamless steel tube and the core rod and between the outer surface of the small-caliber seamless steel tube and the roller, realizes the effective control on the high precision and high speed of the liquid flow, improves the quality of the finished tube, has important significance for the improvement of the production efficiency, and leads the production process to develop towards networking and intellectualization.
Disclosure of Invention
The invention mainly solves the technical problem of providing an online oil spraying and lubricating system for a small-caliber cold pipe blank unit, which can obviously improve the quality of the inner surface and the outer surface of a small-caliber stainless steel pipe so as to improve the yield and effectively solve various surface quality problems of surface rolling, rolling fracture, microcrack and the like of the inner surface and the outer surface of a small-caliber stainless steel seamless pipe in the rolling process of large deformation due to oil loss.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides an online oil spout lubricating system of small-bore cold pipe billet unit, includes pipe blank hole oil spout subassembly, pipe blank surface oil spout subassembly and at least one intelligence fuel feeding unit, pipe blank hole oil spout subassembly part stretches into in the pipe blank to its hole oil spout, the front portion of pipe blank still is equipped with the roll that is used for rolling the pipe blank, pipe blank surface oil spout subassembly is located the pipe blank outside to carry out the oil spout to the contact site of pipe blank and roll, pipe blank hole oil spout subassembly includes mandrel rod and plug, the plug sets up in the hole of pipe blank, the mandrel rod is connected with the plug, and mandrel rod inside has the oil channel, the tip of plug is equipped with out the oil mouth portion, the oil channel communicates with the oil mouth portion, pipe blank surface oil spout subassembly includes the support, movable mounting has the oil spout ring on the support, the oil spout intra-annular has along the oil spout passageway of axial setting, the front end of oil spout passageway is connected with a plurality of shower nozzles, intelligence fuel feeding subassembly includes upper industrial computer, vector converter, hydraulic pump, the hydraulic pump is connected with the oil tank, upper industrial computer adjusts the fuel feeding volume of hydraulic pump to base pipe hole oil spout subassembly and/or base surface oil spout subassembly through control vector converter.
In a preferred embodiment of the present invention, the oil outlet portion includes a plurality of oil outlets, the oil outlets are arranged obliquely to the axial direction, and outlets of the oil outlets are located on the outer periphery of the mandrel.
In a preferred embodiment of the invention, the oil outlets are uniformly arranged along the center of the mandrel at intervals, and the number of the oil outlets is 3.
In a preferred embodiment of the invention, an oil filling cup is mounted at the left end of the mandrel rod, the oil filling cup is communicated with the oil passing channel and is filled with lubricating oil through a hydraulic pump, and a sealing shell is sleeved on the outer side of the oil filling cup and is mounted in the supporting platform.
In a preferred embodiment of the invention, the pipe diameter of the mandrel gradually becomes larger and smaller from left to right, and the right end of the mandrel is further connected with a top extension rod.
In a preferred embodiment of the invention, the spray heads are arc flat spray heads, the number of the spray heads is 3, the spray heads are arranged closely and completely cover the outer side of the tube blank.
In a preferred embodiment of the invention, the number of the intelligent oil supply assemblies is 1, and the intelligent oil supply assemblies simultaneously spray oil to the inner hole of the tube blank and/or the outer surface of the tube blank, and the number of the intelligent oil supply assemblies is 1, and the intelligent oil supply assemblies respectively spray oil to the inner hole of the tube blank and the outer surface of the tube blank.
In a preferred embodiment of the invention, the hydraulic pump delivers oil to the tubular blank inner bore injection assembly and the tubular blank outer surface injection assembly through oil delivery conduits.
In a preferred embodiment of the invention, a pressure sensor for detecting the internal pressure of the oil tank and a proximity switch for detecting the liquid level are arranged in the oil tank.
The invention has the beneficial effects that: the online oil spraying lubricating system of the small-caliber cold pipe blank unit can obviously improve the quality of the inner surface and the outer surface of a small-caliber stainless steel pipe, thereby improving the yield, and effectively solving various surface quality problems of surface rolling, rolling fracture, microcrack and the like of the inner surface and the outer surface of the small-caliber stainless steel seamless pipe in the rolling process of large deformation due to oil loss.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a preferred embodiment of an on-line oil-spraying lubrication system of a small-caliber cold pipe blank unit according to the invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic view of a portion of the structure of FIG. 1;
FIG. 4 is a front view of FIG. 3;
the parts in the drawings are numbered as follows: 1. the pipe blank hole oil spout subassembly, 11, the mandrel pole, 12, the plug, 13, the oil passing passageway, 14, the oil outlet portion, 15, the oil-out, 16, the oiling cup, 17, sealed casing, 18, a supporting bench, 19, the top extension rod, 2, pipe blank surface oil spout subassembly, 21, the support, 22, spout oil ring, 23, the oil spout passageway, 24, the shower nozzle, 3, intelligent oil supply subassembly, 31, the upper industrial computer, 32, the vector converter, 33, the hydraulic pump, 34, the oil tank, 35, oil pipeline, 4, the pipe blank, 5, the roll.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, an online oil spraying and lubricating system for a small-caliber cold pipe blank unit comprises a pipe blank inner hole oil spraying assembly 1, a pipe blank outer surface oil spraying assembly 2 and at least one intelligent oil supply assembly 3, wherein the pipe blank inner hole oil spraying assembly 1 partially extends into a pipe blank 4 to spray oil to the inner hole of the pipe blank, a roller 5 for rolling the pipe blank is further arranged at the front part of the pipe blank 4, the pipe blank outer surface oil spraying assembly 3 is positioned at the outer side of the pipe blank 4 and sprays oil to the contact part of the pipe blank 4 and the roller 5, the pipe blank inner hole oil spraying assembly 1 comprises a mandrel rod 11 and a mandrel 12, the mandrel rod 12 is arranged in the inner hole of the pipe blank 4, the mandrel rod 11 is connected with the mandrel 12, an oil passing channel 13 is arranged inside the mandrel rod 11, an oil outlet part 14 is arranged at the end part of the mandrel 12, the oil passing channel 13 is communicated with the oil outlet part, the oil injection ring 22 is internally provided with an oil injection channel 23 arranged along the axial direction, the front end of the oil injection channel 23 is connected with a plurality of spray heads 24, the intelligent oil supply assembly 3 comprises an upper industrial personal computer 31, a vector frequency converter 32 and a hydraulic pump 33, the hydraulic pump is connected with an oil tank 34, and the upper industrial personal computer 31 regulates the oil supply amount of the hydraulic pump 33 to the pipe blank inner hole oil injection assembly 1 and/or the pipe blank outer surface oil injection assembly 2 through controlling the vector frequency converter 32.
In addition, the oil outlet portion 14 includes a plurality of oil outlets 15, the oil outlets 15 are arranged obliquely to the axial direction, and outlets of the oil outlets 15 are located on the outer periphery to the core rods 12. Oil outlets 15 are evenly spaced along the center of the mandrel 12, and the number of the oil outlets 15 is 3.
In addition, an oil filling cup 16 is installed at the left end of the mandrel rod 11, the oil filling cup 16 is communicated with the oil passing channel 13, lubricating oil is filled in through a hydraulic pump 33, a sealing shell 17 is sleeved on the outer side of the oil filling cup 16, and the sealing shell 17 is installed in a support platform 18. The pipe diameter of the core rod 12 gradually increases from left to right and then gradually decreases, and the right end of the core rod 12 is connected with a top extension rod 19.
In addition, the spray heads 24 are arc flat spray heads, the spray heads 24 are arranged close to each other and completely cover the outer side of the tube blank 4, the number of the spray heads 24 is 6, the angle is inwards inclined for 6-10 degrees and can be adjusted, lubricating oil can be uniformly sprayed on the outer surface of the tube blank in an all-around covering mode, and a continuous annular oil film is formed.
In addition, the quantity of intelligence oil supply unit 3 is 1 and simultaneously to pipe hole oil spout subassembly 1 and/pipe surface oil spout subassembly 2, and the quantity of intelligence oil supply unit 3 is 1 and respectively to pipe hole oil spout subassembly 1 and pipe surface oil spout subassembly 2. The hydraulic pump 33 transmits oil to the tube blank inner hole oil injection assembly 1 and the tube blank outer surface oil injection assembly 2 through an oil transmission pipeline 35. The oil tank 35 is provided with a pressure sensor for detecting the internal pressure of the oil tank and a proximity switch for detecting the liquid level. The vector frequency converter 32 is adopted to drive the motor and the hydraulic pump 66, the flow control in the oil circuit is completed by directly controlling the rotating speed of the motor and the oil pump by the vector frequency converter, the system pressure is controlled by an overflow valve, the efficiency can be improved and the cost can be reduced under the condition of meeting the process conditions. The PLC configuration and programming software package are completed in an off-line state, and then the data are downloaded to the controller as a complete file through a serial port of a computer, so that the functions of pressure loss, flow control detection, fault detection alarm and the like are realized. The pressure of the system can be ensured by the pressure actuating element, and the flow of the system can be automatically controlled and adjusted along with the change of group distances of various specifications. The device is provided with a proximity switch which can be actuated according to the feeding of the tube blank to a corresponding position, the whole rolling oil lubrication system can be automatically opened and closed according to the actual working conditions, and the device is also provided with a control system which is connected with a cold tube blank machine, so that the main system can automatically control the lubrication subsystem, the lubrication system is automatically locked and alarms when the main machine fails, and the control integrity of the whole system is realized. The upper industrial personal computer and the configuration software can comprehensively and dynamically display the dynamic process flow of the operation rolling process, and realize the dynamic monitoring, fault detection, alarm, fault diagnosis, system maintenance and the like of the decompression and multistage flow system.
The online oil injection lubricating system for the small-caliber cold pipe blank unit has the following specific working principle: before rolling begins, field personnel operate configuration software of an upper industrial personal computer according to parameters of different specification group distances of the pipes, and adjust the power of the vector frequency converter, so that oil transportation of the hydraulic pump is controlled. At the moment, a calculator in the upper industrial personal computer automatically calculates the oil injection quantity and the oil injection speed required by rolling the small-caliber seamless steel pipe with corresponding parameters, the calculator transmits the calculation result to the PLC, and the PLC controls the vector frequency converter to adjust the hydraulic pump, so that the oil transportation speed is adjusted.
The core rod 12 is inserted into the inner hole of the tube blank 4, the oil outlet 15 is positioned at the end part of the tube blank 4, then the oil tank 34 enters the oil filling cup 16 through the oil pipeline 35 under the action of the hydraulic pump 33, and then the lubricating oil flows out to the position between the core rod 12 and the tube blank 4 through the oil outlet 15 part.
The oil spray ring 22 is arranged on the bracket 21, the bracket 21 is fixed on the feeding side of the rolling mill, and when the small-caliber stainless steel seamless tube is rolled, lubricating oil passes through the oil spray ring 22 under the action of the hydraulic pressure 33 and is uniformly sprayed on the outer surface of the tube blank 4 in an all-around covering manner at the arc-shaped flat spray head 24.
The upper industrial personal computer is completed by the configuration of the PLC and a programming software package in an off-line state, and then is downloaded to the controller by a serial port of the computer as a complete file, so that the functions of pressure loss, flow control detection, fault detection alarm and the like are realized. The pressure of the system can be ensured by the pressure actuating element, and the flow of the system can be automatically controlled and adjusted along with the change of group distances of various specifications. The device is provided with a proximity switch which can be actuated according to the feeding of the tube blank to a corresponding position, the whole rolling oil lubrication system can be automatically opened and closed according to the actual working conditions, and the device is also provided with a control system which is connected with a cold tube blank machine, so that the main system can automatically control the lubrication subsystem, the lubrication system is automatically locked and alarms when the main machine fails, and the control integrity of the whole system is realized. The upper industrial personal computer and the configuration software can comprehensively and dynamically display the dynamic process flow of the operation rolling process, and realize dynamic monitoring, control and the like of the flow system. The system is provided with complete fault detection, alarm, diagnosis and safety protection functions. The system can realize remote monitoring, fault diagnosis, system maintenance, operation guidance, system upgrade and the like through a remote communication medium.
Different from the prior art, the online oil-spraying lubrication system for the small-caliber cold pipe blank unit can perform online oil-spraying lubrication on the inner surface and the outer surface of a small-caliber seamless steel pipe, and obviously improve the quality of the inner surface and the outer surface of a small-caliber stainless steel pipe, so that the yield is improved, and various surface quality problems of surface rolling, rolling fracture, microcrack and the like caused by oil loss of the inner surface and the outer surface of the small-caliber stainless steel seamless pipe in the rolling process with large deformation are effectively solved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The on-line oil spraying and lubricating system of the small-caliber cold pipe blank unit is characterized by comprising a pipe blank inner hole oil spraying assembly, a pipe blank outer surface oil spraying assembly and at least one intelligent oil supply assembly, wherein the pipe blank inner hole oil spraying assembly partially extends into a pipe blank to spray oil to an inner hole of the pipe blank, the front part of the pipe blank is also provided with a roller for rolling the pipe blank, the pipe blank outer surface oil spraying assembly is positioned outside the pipe blank and sprays oil to a contact part of the pipe blank and the roller, the pipe blank inner hole oil spraying assembly comprises a mandrel rod and a mandrel, the mandrel is arranged in an inner hole of the pipe blank, the mandrel rod is connected with the mandrel, an oil passing channel is arranged inside the mandrel rod, an oil outlet part is arranged at the end part of the mandrel, the oil passing channel is communicated with the oil outlet part, the pipe blank outer surface oil spraying assembly comprises a support, an oil spraying ring is movably arranged, the front end of oil spout passageway is connected with a plurality of shower nozzles, intelligence fuel feeding subassembly includes upper industrial computer, vector converter, hydraulic pump, the hydraulic pump is connected with the oil tank, upper industrial computer adjusts the fuel feeding volume of hydraulic pump to base pipe hole oil spout subassembly and/or base surface oil spout subassembly through control vector converter.
2. The online oil injection lubrication system for the small-caliber cold pipe blank unit as claimed in claim 1, wherein the oil outlet part comprises a plurality of oil outlets, the oil outlets are arranged obliquely to the axial direction, and outlets of the oil outlets are located on the periphery of the mandrel.
3. The online oil spray lubrication system for the small-caliber cold pipe blank machine set according to claim 2, wherein the oil outlets are uniformly arranged along the center of the mandrel at intervals, and the number of the oil outlets is 3.
4. The on-line oil injection lubrication system for the small-caliber cold pipe blank unit according to claim 3, wherein an oil injection cup is installed at the left end of the mandrel rod and is communicated with an oil passing channel to inject lubricating oil through a hydraulic pump, a sealing shell is sleeved on the outer side of the oil injection cup and is installed in the supporting platform.
5. The on-line oil spray lubrication system for the small-caliber cold pipe blank unit according to claim 4, wherein the pipe diameter of the core rod gradually increases from left to right and then gradually decreases, and the right end of the core rod is further connected with a top extension rod.
6. The online oil spray lubrication system for the small-caliber cold pipe blank machine set according to claim 1, wherein the spray heads are arc-shaped flat spray heads, the number of the spray heads is 3, the spray heads are arranged closely and completely cover the outer side of the pipe blank.
7. The on-line oil injection lubricating system for the small-caliber cold pipe blank unit according to any one of claims 1 to 6, wherein the number of the intelligent oil supply assemblies is 1, and the oil supply assemblies simultaneously spray oil to the inner hole of the pipe blank and/or the outer surface of the pipe blank, and the number of the intelligent oil supply assemblies is 1, and the oil supply assemblies respectively spray oil to the inner hole of the pipe blank and the outer surface of the pipe blank.
8. The on-line oil injection lubrication system for the small-caliber cold pipe blank unit according to claim 7, wherein the hydraulic pump transmits oil to the oil injection assembly of the inner hole of the pipe blank and the oil injection assembly of the outer surface of the pipe blank through an oil pipeline.
9. The on-line oil injection lubrication system for the small-caliber cold pipe blank unit according to claim 8, wherein a pressure sensor for detecting the internal pressure of the oil tank and a proximity switch for detecting the liquid level are arranged in the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919694.4A CN112024619A (en) | 2020-09-04 | 2020-09-04 | Online oil injection lubricating system of small-caliber cold pipe blank unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919694.4A CN112024619A (en) | 2020-09-04 | 2020-09-04 | Online oil injection lubricating system of small-caliber cold pipe blank unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112024619A true CN112024619A (en) | 2020-12-04 |
Family
ID=73591453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010919694.4A Pending CN112024619A (en) | 2020-09-04 | 2020-09-04 | Online oil injection lubricating system of small-caliber cold pipe blank unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112024619A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022048408A1 (en) * | 2020-09-04 | 2022-03-10 | 江苏武进不锈股份有限公司 | On-line oil injection lubrication system of small-caliber cold pipe blank unit |
-
2020
- 2020-09-04 CN CN202010919694.4A patent/CN112024619A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022048408A1 (en) * | 2020-09-04 | 2022-03-10 | 江苏武进不锈股份有限公司 | On-line oil injection lubrication system of small-caliber cold pipe blank unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104924148B (en) | Oil-water-gas three-phase micro lubricating cooling system | |
| CN212597966U (en) | Online oil injection lubricating system of small-caliber cold pipe blank unit | |
| CN112024619A (en) | Online oil injection lubricating system of small-caliber cold pipe blank unit | |
| CN206592747U (en) | Lubricating grease atomizing spraying system for steel wire rope | |
| CN110052351A (en) | A kind of self-propelled bulk cement carrier cylinder reparation spray-painting plant | |
| CN105290242B (en) | Full-length expanding unit for medium-diameter submerged-arc welded pipe | |
| CN112024620A (en) | Online oil injection lubricating system of large-diameter cold pipe blank unit | |
| CN201632478U (en) | Cooling and lubricating device of movable core rod | |
| CN106925476B (en) | A kind of pipeline inside and outside coating all-in-one machine | |
| CN212597967U (en) | Online oil injection lubricating system of large-diameter cold pipe blank unit | |
| CN206519285U (en) | Pipe die spraying equipment and pipe die spraying equipment system | |
| CN103334730B (en) | The combination oil nozzle device of daily output is accurately controlled for heavy oil wells open flow | |
| CN210030753U (en) | Spraying device for treating desulfurization slag | |
| CN203610413U (en) | Roll cooling device used for rolling composite metal material | |
| CN204627534U (en) | A kind of oil well leak stopping ball-throwing apparatus | |
| CN206794004U (en) | Large-scale petroleum internal surface of sleeve pipe spray-painting plant | |
| CN206981074U (en) | A kind of pipe inner-wall spraying device | |
| CN204276207U (en) | A kind of graphitic lubricant nozzle | |
| CN213775331U (en) | Anticorrosive medicament atomizing filling device of gas production pipeline | |
| CN202070582U (en) | Lubricant supplying structure for wire drawing machine | |
| CN202479231U (en) | Bore lubricating device for tube rolling | |
| CN207468674U (en) | Reducing type sprays quenching apparatus | |
| CN206573756U (en) | Ointment spray equipment | |
| CN111578113A (en) | Intelligent concentrated dry oil lubricating system suitable for drill crown block | |
| CN217251648U (en) | Extrusion die lubricating arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |