CN116475692A - Processing technology of bearing bush in sliding bearing - Google Patents
Processing technology of bearing bush in sliding bearing Download PDFInfo
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- CN116475692A CN116475692A CN202310209596.5A CN202310209596A CN116475692A CN 116475692 A CN116475692 A CN 116475692A CN 202310209596 A CN202310209596 A CN 202310209596A CN 116475692 A CN116475692 A CN 116475692A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 83
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 56
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 56
- 238000003466 welding Methods 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 52
- 230000008569 process Effects 0.000 claims abstract description 45
- 230000007704 transition Effects 0.000 claims abstract description 38
- 230000007547 defect Effects 0.000 claims abstract description 32
- 238000003754 machining Methods 0.000 claims abstract description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000000748 compression moulding Methods 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 9
- 239000001569 carbon dioxide Substances 0.000 claims description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 7
- 239000010962 carbon steel Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 238000003825 pressing Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 36
- 239000007789 gas Substances 0.000 description 34
- 239000004033 plastic Substances 0.000 description 14
- 239000007769 metal material Substances 0.000 description 5
- 238000004023 plastic welding Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 238000004021 metal welding Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention belongs to the technical field of bearing bush processing, and particularly relates to a processing technology of a bearing bush in a gearbox sliding bearing in the wind power industry. The invention forms a transition layer consisting of defect hole grooves on the concave surface of the metal bearing bush through a welding process, then processes a groove on the concave surface of the metal bearing bush through a machining process, finally places a polyether-ether-ketone plate on the concave surface of the metal bearing bush, and molds the polyether-ether-ketone plate in a mold to obtain the polyether-ether-ketone reinforced bearing bush, wherein the polyether-ether-ketone is melted and permeated into the defect hole grooves of the transition layer and the grooves of the bearing bush in the mold pressing process, thereby achieving the purposes of tightly combining the metal bearing bush with the polyether-ether-ketone plate and improving the integral connection strength of the bearing bush. The processing technology of the bearing bush in the sliding bearing is simple and reliable, the cost is low, and the good combination of the metal bearing bush and the polyether-ether-ketone plate can be ensured, so that the sliding bearing is ensured to have longer service life.
Description
Technical Field
The invention belongs to the field of machining of bearing bushes, and particularly relates to a machining process of a bearing bush in a gearbox sliding bearing in the wind power industry.
Background
Along with the rapid development of world economy, the problems of energy shortage and environment are highlighted, the development and utilization force of environmental protection new energy is increased in many countries, wind energy is used as a green new energy with abundant reserves, and the wind energy is more and more valued in the world, so that wind energy power generation has a very wide development prospect. The wind power speed increasing gear box is one of main key components of the wind generating set, is arranged between the wind wheel and the generator, transmits the wind wheel power to the generator to generate power, and simultaneously converts the very low rotation speed input by the wind wheel into the rotation speed required by the generator. In wind power speed-up gearboxes, bearings are important parts, the proportion of which fail is large, and failure of which often causes catastrophic failure of the gearbox.
At present, a rolling bearing is mainly used in a wind power gear box, but the rolling bearing has the defects of limited service life, large volume, high cost and the like, and the sliding bearing has the advantages of small radial size, strong bearing capacity, stable and reliable work, no noise, low cost and the like, and the use of the sliding bearing to replace the rolling bearing is one of the development trends of the wind power industry.
The bearing shell is the part of the plain bearing in contact with the journal, is in the form of a half-cylindrical surface in the shape of a tile, is very smooth, and is a layer of friction reducing material cast on its inner surface in order to improve the friction properties of the bearing shell surface, called the bearing lining. The materials of the bearing bush and the bearing bush are commonly called as sliding bearing materials, and main indexes for evaluating the advantages and disadvantages of the sliding bearing materials are as follows: compressive strength and fatigue resistance; wear resistance; running-in property; friction compatibility to prevent sticking to journals; the compliance of compensating the initial poor fit of the sliding surface, the embeddability, thermal conductivity, corrosion resistance, processing manufacturability and the like of allowing hard particles to embed to relieve the scratch of the journal; however, no material can completely meet the requirements, and the indexes are related to each other, so that the problem is solved by adopting a metal and plastic double-layer structure at present, the metal material has high compressive strength and fatigue resistance, good wear resistance and thermal conductivity, good self-lubricating performance, small friction coefficient, good fatigue resistance, strong shock absorption capability, good corrosion resistance and good embedding property. How to perfectly combine metal and plastic becomes critical.
At present, aiming at the combination problem of metal and plastic, modes such as gluing, electroplating, riveting and metal insert injection molding are generally adopted, and as disclosed in the patent of the invention with the publication number of CN101306568B, the connecting structure of the metal piece and the plastic piece comprises a metal piece and a plastic piece, wherein the metal piece comprises a locking groove, the plastic piece is filled in the locking groove through integral molding, the metal piece comprises a bottom surface and a side surface, the locking groove is arranged at the joint of the side surface and the bottom surface, the locking groove is V-shaped and is provided with two wall surfaces which are connected with each other, one wall surface is connected with the bottom surface, the other wall surface is connected with the side surface, and a concave part is formed on the wall surface connected with the bottom surface, so that the metal piece and the plastic piece are strongly connected. Another patent of the invention, for example CN105643090, discloses an ultrasonic metal rivet welding method for well connecting plastic and metal, specifically: the plastic welding piece is provided with more than 2T-shaped pin holes, T-shaped metal rivets with the shape identical to that of the T-shaped pin holes formed in the plastic welding piece are manufactured, the plastic welding piece is placed on the metal welding piece and aligned, the T-shaped metal rivets are inserted into the T-shaped pin holes of the plastic welding piece, the ultrasonic metal rivet welding mode is adopted to carry out ultrasonic metal solid-state welding on the bottom end faces of the T-shaped metal rivets and the metal welding piece, and cleaning and detection after welding are carried out, so that firm combination of the metal welding piece and the plastic welding piece is ensured.
Aiming at the problem of combination of metal and plastic in a bearing bush of a sliding bearing in a wind power gear box, the method mainly adopts an adhesive mode at present, but has poor adhesive performance, insufficient combination strength and uneven adhesive layer, and the wind power gear box has high reliability, long running time (20-25 years) and incapability of being replaced in the service life (extremely expensive replacement cost), so the bearing bush processed by the adhesive mode cannot adapt to the requirements of the wind power gear box.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a processing technology of a bearing bush in a sliding bearing, and aims to solve the technical problems of low reliability, short service life and the like of the sliding bearing caused by the fact that the adhesion between metal and plastic in the existing bearing bush is not firm, the adhesive layer is uneven and the bonding strength between parts is poor.
The invention provides a processing technology of a bearing bush in a sliding bearing, which comprises the following specific technical scheme:
the processing technology of the bearing bush in the sliding bearing comprises the steps of preprocessing the concave surface of the metal bearing bush to form a defect hole groove and a groove, and connecting the polyether-ether-ketone plate with the concave surface of the metal bearing bush through a compression molding technology.
Preferably, the processing technology of the bearing bush in the sliding bearing specifically comprises the following steps:
s1: forming a transition layer consisting of defect hole grooves on the concave surface of the metal bearing bush through a welding process;
s2: after removing the welding impurities and welding slag of the transition layer, processing a groove on the concave surface of the metal bearing bush;
s3: and placing the polyether-ether-ketone plate on the concave surface of the metal bearing bush, and placing the plate into a mould for moulding to obtain the polyether-ether-ketone reinforced bearing bush.
The defective cell is a defect such as a crack, a honeycomb pore, or an irregular void, which is generated during welding.
Preferably, the welding process is gas shielded welding, and specific process parameters are as follows: the welding current is set to be 200A, the shielding gas is carbon dioxide gas, the gas flow is set to be 3-5L/min, and the distance between the shielding gas nozzle and the concave surface of the metal bearing bush is set to be 20-30mm.
Preferably, the thickness of the transition layer is less than or equal to 3mm, and the diameter size of the defect hole groove is 0.1mm-2mm.
Preferably, the groove is a trapezoid groove or a dovetail groove.
Preferably, the compression molding process parameters are set as follows: the temperature is 350-400 ℃, the pressure is 2-4MPa, and the molding time is 1-2h.
Preferably, the metal bearing bush material is carbon steel or alloy steel material.
Preferably, the polyether-ether-ketone plate has a thickness of 3-5mm.
The invention utilizes the gas to protect the welding process to treat the concave surface of the metal bearing bush, form the transition layer formed by defective hole groove, its mechanism lies in, when using carbon dioxide as protective gas in the gas shielded arc welding generally, the gas flow is set up to 20-25L/min, make the surface of welded seam crack free, there are no air holes, the gas flow of the carbon dioxide of the invention is set up to 3-5L/min, thus increase the oxygen concentration in the welding process, metal is oxidized and forms the defective hole groove during electric welding, get the transition layer formed by defective hole groove, and then help polyether-ether-ketone material to permeate into the transition layer, thus strengthen the bonding of polyether-ether-ketone plate and transition layer, namely strengthen the bonding strength of polyether-ether-ketone plate and metal bearing bush; in addition, when carbon dioxide gas is used as welding shielding gas, the flow rate of the shielding gas is regulated through an automatic control loop, so that the porosity of the transition layer can be controlled, and the proper shielding gas flow rate is selected according to the requirement of bonding strength.
According to the invention, the polyether-ether-ketone plate is tightly combined with the concave surface of the metal bearing bush by adopting a compression molding process, the polyether-ether-ketone material can uniformly enter the trapezoid groove or the dovetail groove of the concave surface of the metal bearing bush in the compression molding process, and the polyether-ether-ketone can not generate bubbles and bulges in the melting and solidifying processes under the action of compression molding pressure, so that a compact combination layer is obtained, the combination strength of the metal bearing bush and the polyether-ether-ketone plate is enhanced, the combination strength is 40-80MPa, and the expected service life is 20-25 years.
The processing technology of the bearing bush in the sliding bearing is simple and reliable, the cost is lower, and the good combination of the metal bearing bush and the polyether-ether-ketone plate can be ensured, so that the sliding bearing is ensured to have longer service life, the bearing bush processed by the invention combines the advantages of metal materials and plastic materials, the metal material part has stronger compressive strength and fatigue resistance, the wear resistance and the heat conductivity are good, the self-lubricating performance of the plastic material part (polyether-ether-ketone) is good, the friction coefficient is small, the fatigue resistance is good, the vibration absorbing capacity is strong, the corrosion resistance and the embedding property are good, and the application conditions of the gearbox sliding bearing in the wind power industry can be met.
Drawings
FIG. 1 is a flow chart of a processing process of a bearing bush in a sliding bearing;
FIG. 2 is a schematic illustration of the location of a concave surface welded transition layer of a mandrel in example 2 of the present invention;
FIG. 3 is a cross-sectional view of a PEEK-reinforced bearing shell according to example 3 of the present invention.
Detailed Description
The present invention will be further described in detail below with reference to specific embodiments and with reference to fig. 1 to 3, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Example 1
The processing technology of the bearing bush in the sliding bearing provided by the embodiment comprises the following specific technical scheme:
the processing technology of the bearing bush in the sliding bearing comprises the following steps: the concave surface of the metal bearing bush is pretreated to form a defect hole groove and a groove, and then the polyether-ether-ketone plate is connected with the concave surface of the metal bearing bush through a compression molding process.
The method specifically comprises the following steps:
s1: forming a transition layer consisting of defect hole grooves on the concave surface of the metal bearing bush through a welding process;
s2: after removing the welding impurities and welding slag of the transition layer, processing a groove on the concave surface of the metal bearing bush;
s3: and placing the polyether-ether-ketone plate on the concave surface of the metal bearing bush, and placing the plate into a mould for moulding to obtain the polyether-ether-ketone reinforced bearing bush.
The metal bearing shell in step S1 is made of carbon steel, and the surface of the bearing shell is cleaned by WD40 before welding.
In step S1, the welding process is gas shielded welding, and specific process parameters are as follows: the welding current is set to be 200A, the shielding gas is carbon dioxide gas, the gas flow is set to be 3L/min, and the distance between the shielding gas nozzle and the concave surface of the metal bearing bush is set to be 20mm.
The thickness of the welding transition layer is 3mm by milling machine processing, and the diameter size of the defect hole groove is 0.1mm-2mm.
In step S2, the concave groove of the metal bearing bush is a trapezoid groove.
In the step S3, polyether-ether-ketone plates with the thickness of 4mm are selected to be placed on the concave surface of the metal bearing bush, and the compression molding process parameters are set as follows: the temperature is 350 ℃, the pressure is 4MPa, and the molding time is 2 hours.
The polyether-ether-ketone reinforced carbon steel bearing bush interlayer bonding strength is 40MPa, the bearing bush transition layer is densely distributed with defect hole grooves of 0.1-2 mm, the pressed polyether-ether-ketone can be fully filled into the trapezoid grooves of the metal bearing bush and the defect hole grooves of the transition layer to play a good role in bonding, the surface of the polyether-ether-ketone plate is smooth and free of bulge phenomenon, the expected service life is 20 years, and the service requirement of long running time of a wind power gear box is met.
Example 2
The processing technology of the bearing bush in the sliding bearing provided by the embodiment comprises the following specific technical scheme:
the processing technology of the bearing bush in the sliding bearing comprises the following steps: the concave surface of the metal bearing bush is pretreated to form a defect hole groove and a groove, and then the polyether-ether-ketone plate is connected with the concave surface of the metal bearing bush through a compression molding process.
The method specifically comprises the following steps:
s1: forming a transition layer consisting of defect hole grooves on the concave surface of the metal bearing bush through a welding process;
s2: after removing the welding impurities and welding slag of the transition layer, processing a groove on the concave surface of the metal bearing bush;
s3: and placing the polyether-ether-ketone plate on the concave surface of the metal bearing bush, and placing the plate into a mould for moulding to obtain the polyether-ether-ketone reinforced bearing bush.
The metal bearing shell in step S1 is made of alloy steel, and the surface of the bearing shell is cleaned by WD40 before welding.
In step S1, the welding process is gas shielded welding, and specific process parameters are as follows: the welding current is set to be 200A, the shielding gas is carbon dioxide gas, the gas flow is set to be 5L/min, and the distance between the shielding gas nozzle and the surface of the bearing bush is set to be 25mm. The position distribution of the metal bearing concave welding transition layer is shown in figure 2, and the transition layer 2 consisting of defect hole grooves is uniformly distributed on the concave surface of the metal bearing 1 at intervals.
The thickness of the welding transition layer is 2mm by milling machine processing, and the diameter size of the defect hole groove is 0.1mm-2mm.
In step S2, the concave groove of the metal bearing bush is a dovetail groove.
In the step S3, polyether-ether-ketone plates with the thickness of 3mm are selected, and the compression molding process parameters are as follows: the temperature is 400 ℃, the pressure is 3MPa, and the molding time is 2 hours.
The polyether-ether-ketone reinforced carbon steel bearing bush interlayer bonding strength is 60MPa, the bearing bush transition layer is densely distributed with defect hole grooves of 0.1-2 mm, the polyether-ether-ketone can be fully filled into the dovetail groove of the metal bearing bush and the defect hole groove of the transition layer after mould pressing, a good bonding effect is achieved, the surface of the polyether-ether-ketone plate is smooth and free of bulge phenomenon, the expected service life is 25 years, and the use requirement of long running time of a wind power gear box is met.
Example 3
The processing technology of the bearing bush in the sliding bearing provided by the embodiment comprises the following specific technical scheme:
the processing technology of the bearing bush in the sliding bearing comprises the following steps: the concave surface of the metal bearing bush is pretreated to form a defect hole groove and a groove, and then the polyether-ether-ketone plate is connected with the concave surface of the metal bearing bush through a compression molding process.
The method specifically comprises the following steps:
s1: forming a transition layer consisting of defect hole grooves on the concave surface of the metal bearing bush through a welding process;
s2: after removing the welding impurities and welding slag of the transition layer, processing a groove on the concave surface of the metal bearing bush;
s3: and placing the polyether-ether-ketone plate on the concave surface of the metal bearing bush, and placing the plate into a mould for moulding to obtain the polyether-ether-ketone reinforced bearing bush.
The metal bearing bush in the step S1 is made of alloy steel.
In step S1, the welding process is gas shielded welding, and specific process parameters are as follows: the welding current is set to be 200A, the shielding gas is carbon dioxide gas, the gas flow is set to be 4L/min, and the distance between the shielding gas nozzle and the surface of the bearing bush is set to be 30mm.
And (3) processing the welding transition layer by a milling machine, wherein the thickness of the transition layer after processing is 3mm, and the diameter size of the defect hole groove is 0.1-2 mm.
In step S2, the concave groove of the metal bearing bush is a dovetail groove.
In the step S3, polyether-ether-ketone plates with the thickness of 5mm are selected, and the compression molding process parameters are as follows: the temperature is 380 ℃, the pressure is 2MPa, and the molding time is 1.5h.
The cross-sectional view of the polyether-ether-ketone reinforced carbon steel bearing bush prepared by the embodiment is shown in figure 3, the surface of the polyether-ether-ketone plate is smooth and has no bulge phenomenon, the polyether-ether-ketone material is fully filled into a dovetail groove on the concave surface of the metal bearing bush, the interlayer bonding strength of the polyether-ether-ketone part and the metal part is 80MPa, the bonding strength of common glue is generally 5-15MPa, and the bonding strength of the invention is 3-16 times of the bonding strength of the glue. The defect hole grooves with the thickness of 0.1-2 mm are densely distributed on the transition layer of the bearing bush can be seen by cutting, the polyether-ether-ketone is fully filled in the defect hole grooves of the transition layer, the bonding strength of the polyether-ether-ketone and the metal bearing bush is further enhanced, the expected service life is 24 years, and the use requirement of long running time of the wind power gear box is met.
Example 4
The processing technology of the bearing bush in the sliding bearing provided by the embodiment comprises the following specific technical scheme:
the processing technology of the bearing bush in the sliding bearing comprises the following steps: the concave surface of the metal bearing bush is pretreated to form a defect hole groove and a groove, and then the polyether-ether-ketone plate is connected with the concave surface of the metal bearing bush through a compression molding process.
The method specifically comprises the following steps:
s1: forming a transition layer consisting of defect hole grooves on the concave surface of the metal bearing bush through a welding process;
s2: after removing the welding impurities and welding slag of the transition layer, processing a groove on the concave surface of the metal bearing bush;
s3: and placing the polyether-ether-ketone plate on the concave surface of the metal bearing bush, and placing the plate into a mould for moulding to obtain the polyether-ether-ketone reinforced bearing bush.
The metal bearing shell in step S1 is made of alloy steel, and the surface of the bearing shell is cleaned by WD40 before welding.
In step S1, the welding process is gas shielded welding, and specific process parameters are as follows: the welding current is set to be 200A, the shielding gas is carbon dioxide gas, the gas flow is set to be 4L/min, and the distance between the shielding gas nozzle and the surface of the bearing bush is set to be 23mm.
And (3) processing the welding transition layer by a milling machine, wherein the thickness of the processed transition layer is 1mm, and the diameter size of the defect hole groove is 0.1-2 mm.
In step S2, the concave groove of the metal bearing bush is a trapezoid groove.
In the step S3, polyether-ether-ketone plates with the thickness of 4.5mm are selected, and the compression molding process parameters are set as follows: the temperature is 390 ℃, the pressure is 2.5MPa, and the molding time is 2 hours.
The polyether-ether-ketone reinforced carbon steel bearing bush interlayer bonding strength is 50MPa, the bearing bush transition layer is densely distributed with defect hole grooves of 0.1-2 mm, the polyether-ether-ketone can be fully filled into the trapezoid grooves of the metal bearing bush and the defect hole grooves of the transition layer after mould pressing, a good bonding effect is achieved, the surface of the polyether-ether-ketone plate is smooth and free of bulge phenomenon, the expected service life is 22 years, and the service requirement of long running time of a wind power gear box is met.
In summary, the processing technology of the bearing bush in the sliding bearing is simple and reliable, the cost is low, the good combination of the metal bearing bush and the polyether-ether-ketone plate can be ensured, the combination strength can reach 40-80MPa, which is 3-16 times of the common adhesive strength, the expected service life is 20-25 years, the bearing bush processed by the invention can be used for a long time, the advantages of the metal material and the plastic material are combined, the metal material part has stronger compressive strength and fatigue resistance, the wear resistance and the heat conductivity are good, the self-lubricating property of the plastic material (polyether-ether-ketone) part is good, the friction coefficient is small, the fatigue resistance is good, the vibration absorbing capacity is strong, the corrosion resistance and the embedding property are good, and the application conditions of the gearbox sliding bearing in the wind power industry can be satisfied.
The above preferred embodiments of the present invention are not limited to the above examples, and the present invention is not limited to the above examples, but can be modified, added or replaced by those skilled in the art within the spirit and scope of the present invention.
Claims (8)
1. The processing technology of the bearing bush in the sliding bearing is characterized in that: the concave surface of the metal bearing bush is pretreated to form a defect hole groove and a groove, and then the polyether-ether-ketone plate is connected with the concave surface of the metal bearing bush through a compression molding process.
2. A process for machining a bush in a plain bearing according to claim 1, characterized in that: the method comprises the following steps:
s1: forming a transition layer consisting of defect hole grooves on the concave surface of the metal bearing bush through a welding process;
s2: after removing the welding impurities and welding slag of the transition layer, processing a groove on the concave surface of the metal bearing bush;
s3: and placing the polyether-ether-ketone plate on the concave surface of the metal bearing bush, and placing the plate into a mould for moulding to obtain the polyether-ether-ketone reinforced bearing bush.
3. A process for machining a bush in a sliding bearing according to claim 2, characterized in that: in step S1, the welding process is gas shielded welding, and specific process parameters are as follows: the welding current is set to be 200A, the shielding gas is carbon dioxide gas, the gas flow is set to be 3-5L/min, and the distance between the shielding gas nozzle and the concave surface of the metal bearing bush is set to be 20-30mm.
4. A process for machining a bush in a sliding bearing according to claim 2, characterized in that: in the step S1, the thickness of the transition layer is less than or equal to 3mm, and the diameter size of the defect hole groove is 0.1mm-2mm.
5. A process for machining a bush in a sliding bearing according to claim 2, characterized in that: in step S2, the groove is a trapezoid groove or a dovetail groove.
6. A process for machining a bush in a sliding bearing according to claim 2, characterized in that: in step S3, the compression molding process parameters are set as follows: the temperature is 350-400 ℃, the pressure is 2-4MPa, and the molding time is 1-2h.
7. A process for machining a bush in a plain bearing according to claim 1, characterized in that: the metal bearing bush material is carbon steel or alloy steel material.
8. A process for machining a bush in a plain bearing according to claim 1, characterized in that: the thickness of the polyether-ether-ketone plate is 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310209596.5A CN116475692A (en) | 2023-03-07 | 2023-03-07 | Processing technology of bearing bush in sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310209596.5A CN116475692A (en) | 2023-03-07 | 2023-03-07 | Processing technology of bearing bush in sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116475692A true CN116475692A (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310209596.5A Pending CN116475692A (en) | 2023-03-07 | 2023-03-07 | Processing technology of bearing bush in sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116475692A (en) |
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2023
- 2023-03-07 CN CN202310209596.5A patent/CN116475692A/en active Pending
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