CN111690794A - Preparation method of engineering machinery final transmission gear - Google Patents
Preparation method of engineering machinery final transmission gear Download PDFInfo
- Publication number
- CN111690794A CN111690794A CN202010051870.7A CN202010051870A CN111690794A CN 111690794 A CN111690794 A CN 111690794A CN 202010051870 A CN202010051870 A CN 202010051870A CN 111690794 A CN111690794 A CN 111690794A
- Authority
- CN
- China
- Prior art keywords
- coating
- nbhfmoc
- magnetron sputtering
- target
- gear
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 80
- 239000011248 coating agent Substances 0.000 claims abstract description 79
- 238000001755 magnetron sputter deposition Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 238000007733 ion plating Methods 0.000 claims abstract description 23
- 238000000151 deposition Methods 0.000 claims abstract description 21
- 238000005240 physical vapour deposition Methods 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 230000008021 deposition Effects 0.000 claims abstract description 16
- 239000011159 matrix material Substances 0.000 claims abstract description 13
- 238000009792 diffusion process Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000004381 surface treatment Methods 0.000 claims abstract description 6
- 150000002500 ions Chemical class 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000005496 tempering Methods 0.000 claims description 13
- 238000005255 carburizing Methods 0.000 claims description 10
- 238000003754 machining Methods 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000007514 turning Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims description 2
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004544 sputter deposition Methods 0.000 abstract description 4
- 230000000704 physical effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
- C23C14/022—Cleaning or etching treatments by means of bombardment with energetic particles or radiation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0605—Carbon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0635—Carbides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
- C23C14/352—Sputtering by application of a magnetic field, e.g. magnetron sputtering using more than one target
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Gears, Cams (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The invention belongs to the technical field of manufacturing of final transmission gears of engineering machinery, in particular to a preparation method of a final transmission gear of engineering machinery, the surface carburization and coating treatment are carried out by a physical vapor deposition technology, a carbide coating, a PVD method and a carburization technology are combined, a carburization diffusion layer is prepared between the carbide coating and the workpiece substrate by an ion sputtering method, namely, the surface of the workpiece is firstly carburized by an ion sputtering method, and then the NbHfMoC carbide coating with gradient change of components is deposited by adopting an ion plating and magnetron sputtering composite method, so that the hardness of the matrix material can be improved, the adhesion property of the matrix deposition coating and the matrix can be enhanced, the physical property difference between the deposition coating and the matrix material can be slowed down, therefore, the wear resistance of the gear part of the final transmission gear of the engineering machinery is improved, the surface treatment efficiency of the gear is effectively improved, and the service life of the final transmission gear of the engineering machinery is prolonged.
Description
Technical Field
The invention belongs to the technical field of manufacturing of final transmission gears of engineering machinery, and particularly relates to a manufacturing method of a final transmission gear of engineering machinery.
Background
The engineering machinery is used as main equipment of a large-scale construction site, the operation working condition is extremely severe, the working load changes violently, the service life of a traditional system of the engineering machinery is greatly shortened, and the design and use requirements on a transmission system are very high. The final drive is the last stage of the power transmission system of the engineering machinery and has the function of decelerating the power transmitted by the engine, the torque converter and the gearbox and transmitting the decelerated power to the traveling system so as to drive the engineering machinery to travel. Due to the reduction of the speed, the reduction gear of the final transmission system is subjected to great load and repeated cyclic vibration and impact, so that the tooth surface of the final transmission gear is worn, pitted, glued and even broken too early, and the like, and great potential safety hazards are caused to production and personal safety of drivers.
In order to improve the bearing capacity of the gear of the transmission system of the engineering machinery, the bearing capacity and the reliability of the gear are improved by reducing the stress of the gear in unit area and improving the strength of the gear teeth in unit area. However, reducing gear surface stress by increasing gear size increases the volume and weight of the gear; while the traditional surface heat treatment method is adopted to improve the hardness of the tooth surface, the tooth surface is greatly deformed, and even the tooth surface of the gear is prematurely failed under high-speed and heavy-load conditions because of insufficient hardness after the traditional heat treatment. Therefore, it is of great significance to extend the service life of the final drive gear.
The carbide coating has the excellent characteristics of high hardness, high strength, stable chemical property, heat resistance, wear resistance and the like, and particularly, the multi-element carbide has more excellent comprehensive use performance, so that the wear resistance of the part is expected to be improved by preparing the carbide coating on the surface of the part or performing carbonization treatment on a metal surface layer.
The current techniques for preparing carbide coatings mainly include spraying, carburizing, vapor deposition and the like. The spraying is that the coating material is sprayed to the surface of a workpiece by means of pressure or centrifugal force, the coating prepared by the method has high spraying efficiency, but the bonding force between the coating and a workpiece substrate is poor, the surface of the coating is very rough, and the coating is not suitable for severe working conditions of high load and high speed; carburizing refers to the process of making carbon atoms penetrate into the surface layer of a steel workpiece, so that the surface of the workpiece obtains high surface hardness and the wear resistance of the workpiece is improved. However, because the carburizing temperature reaches above 800 ℃, the workpiece is still quenched and tempered after carburizing, so that the surface of the workpiece is greatly deformed, the size and shape accuracy of the part cannot be ensured, the processed part still needs to be polished and reprocessed, the carburizing and subsequent heat treatment time usually reaches above 30 hours, and the efficiency is low; the surface of the coating prepared by a vapor deposition method, particularly Physical Vapor Deposition (PVD), has extremely high hardness and strength, and good thermal stability and wear resistance, and the temperature of the preparation process can be controlled below 400 ℃, so that the change of the matrix structure of the part is avoided, and the surface size and the shape precision are not influenced. Therefore, Physical Vapor Deposition (PVD) has great potential in the area of surface treatment. However, when the PVD carbide coating is directly prepared on the surface of the gear part, the PVD coating with high bonding force cannot be obtained due to the large difference between the properties such as the hardness of the substrate, the elastic modulus, the thermal expansion coefficient and the like and the coating material, so that the PVD coating is prematurely peeled off and fails. The surface of the Chinese patent CN101058870A die adopts a single PVD coating, and the poor bonding force between the coating and the substrate and the poor mechanical matching between the PVD coating and the substrate are important factors for limiting the exertion of the advantages of high hardness, low friction coefficient and the like of the PVD coating. The Chinese patent CN103727180A directly prepares the wear-resistant ceramic coating and the diamond coating on the surface of the carbon steel, and the use performance of the prepared coating can not meet a plurality of actual use requirements due to the fact that the coating can not be supported by the softer hardness of the substrate and the obvious performance difference between the substrate and the coating, and particularly the coating can fall off and wear quickly under the working conditions of high speed, heavy load and alternating load.
Disclosure of Invention
The invention aims to provide a preparation method of a final transmission gear of engineering machinery, which can improve the surface hardness of a final transmission gear material, enhance the adhesion performance of a substrate deposition coating and a substrate, slow down the physical property difference of the deposition coating and the substrate material, thereby improving the comprehensive properties of wear resistance and the like of a gear part, effectively improving the surface treatment efficiency and prolonging the service life of the final transmission gear part.
According to the preparation method of the engineering machinery final transmission gear, a gear part matrix is subjected to quenching, high-temperature tempering, rough and finish machining and then is subjected to carburizing treatment by adopting an ion plating method, then an NbHfMoC gradient coating on the surface is deposited by adopting an ion plating and magnetron sputtering composite method, and 2C ion plating targets, 1 Nb magnetron sputtering target, 1 Hf magnetron sputtering target and 1 Mo magnetron sputtering target are adopted during deposition;
the method specifically comprises the following steps:
(1) processing gear parts: the method comprises the steps of gear part base blank → quenching → high temperature tempering → rough machining → semi-finishing → destressing tempering → finishing, wherein the sufficient toughness and impact deformation resistance of a core part can be ensured through quenching and high temperature tempering treatment;
(2) surface pretreatment of gear parts: removing oil stains on the surface of the workpiece by using a metal cleaning agent, rinsing and drying;
(3) surface treatment of gear parts, which comprises sequentially placing the parts in alcohol and acetone, ultrasonic cleaning for 25min each, removing surface impurities and other attachments, drying, rapidly placing in PVD composite coating machine, and vacuumizing to 5.5 × 10-3Pa, heating to 300 ℃, and keeping the temperature for 35 min;
(4) surface glow cleaning: introducing Ar gas, wherein the pressure is 1.8-2.4Pa, the temperature is 290 ℃, the bias voltage power supply voltage is 750V, the duty ratio is 0.2, and the surface is cleaned for 25min by glow discharge;
(5) surface ion cleaning: regulating the bias voltage to 630V, regulating the duty ratio to be 0.3, regulating the Ar gas pressure to be 1.7Pa, regulating the temperature to be 280 ℃, starting an ion source, cleaning ions for 15min, starting an electric arc C target power supply, regulating the C target current to be 120A, and bombarding the ions for 3-4 min;
(6) ion plating carburization: adjusting the power supply of C target ion plating to 105A, the Ar gas pressure to 1.2-1.3 Pa, adjusting the matrix bias voltage to 340V, and carrying out ion carburization for 25-30min at the temperature of 260 ℃;
(7) deposition of NbHfMoC gradient coating: adjusting the Ar gas pressure to 0.9-1.0 Pa, reducing the bias voltage to 180V, adjusting the deposition temperature to 200 ℃, adjusting the C target current to 40A, turning on the magnetron sputtering Nb target current 75A, the magnetron sputtering Hf target current 60A and the magnetron sputtering Mo target current 60A, and depositing the NbHfMoC composite layer for 1-1.5 min; other parameters are unchanged, the C target current is increased, the NbHfMoC composite layer is deposited for 1-1.5 min when the C target current is increased by 2A each time until the C target current is increased to 90A, and then the NbHfMoC composite layer is deposited for 1-1.5 min;
(8) and (3) post-treatment: and (4) turning off the power supply, the ion source and the gas source of each target, and finishing the coating.
The base material of the engineering machinery final transmission gear part is one of medium and low carbon steel and alloy steel thereof, such as 20CrMnTi,20CrMnMo,20CrNi2MoNb, 22CrNi2MoNb, 22CrNi2MoNbH, S48C-V and the like.
The manufactured final transmission gear part of the engineering machinery has the following structure: the surface of the part substrate is provided with a surface carburization diffusion layer and an NbHfMoC carbide gradient coating in sequence.
The invention carries out surface carburization and coating treatment by a physical vapor deposition technology, combines a carbide coating, a PVD method and a carburization technology, and prepares a carburization diffusion layer between the carbide coating and a workpiece substrate by an ion sputtering method, namely, the surface of the workpiece is firstly subjected to surface carburization by the ion sputtering method, and then the NbHfMoC carbide coating with gradient change of components is deposited by a composite method of ion plating and magnetron sputtering.
Compared with the prior art, the invention has the following beneficial effects.
According to the invention, through surface ion carburization treatment, carbon atoms penetrate into the part matrix, and the concentration of the carbon atoms is gradually reduced along with the increase of the depth, so that a carbide gradient diffusion layer with high hardness and strength is formed, and a powerful supporting matrix and good bonding performance are provided for the subsequent preparation of an NbHfMoC carbide coating; the NbHfMoC carbide gradient coating with gradually changed components, which is prepared by the composite method of ion plating and magnetron sputtering, can slow down the performance difference between the coating and a substrate material, improve the matching performance on the structure and the performance, and increase the binding force between the coating and the substrate and the impact resistance of the coating. Meanwhile, in the NbHfMoC carbide gradient coating, the C element can reduce the friction coefficient of the surface of the coating and reduce the noise and friction and wear in the working process of a transmission gear of the engineering machinery, the hardness, strength, compression resistance, wear resistance and corrosion resistance of the coating are improved by adding the Nb element, the wear resistance of the coating is improved by adding the Hf element, the hardness and strength of the coating are improved by adding the Mo element, and the friction coefficient of the coating is reduced. The NbHfMoC gradient carbide coating with gradually changed components can prevent the crack of the coating from expanding, and can improve the physical and mechanical properties of a final transmission gear.
The invention can enhance the adhesion performance of the coating and the substrate by more than 100 percent, reduce the friction and the adhesion in the working process of the final transmission gear, improve the surface hardness by more than 2 times, shorten the process treatment time by more than 80 percent due to the adoption of the physical vapor deposition technology for carburizing and coating treatment, prolong the service life of the final transmission gear of the engineering machinery by more than one time, and reduce the maintenance cost of the final transmission gear by more than 50 percent. Meanwhile, the temperature of the preparation process can be controlled below 300 ℃, so that the matrix structure performance of the final transmission gear part is not degraded, the surface size and the shape precision are not affected, and the final processing process can be used as the final processing process of the final transmission gear part of the engineering machinery without grinding and reprocessing after the processing.
Drawings
FIG. 1 is a schematic surface structure diagram of a final transmission gear part of an engineering machine manufactured according to embodiment 1 of the present invention.
In the figure: 1. the part comprises a part substrate, 2a surface carburizing diffusion layer and 3 a NbHfMoC carbide gradient coating.
Detailed Description
Two preferred embodiments of the present invention are given below.
The preparation method of the engineering machinery final transmission gear part can be used for producing and manufacturing engineering machinery final transmission gear parts with various shapes and specifications.
Example 1
According to the preparation method of the transmission gear part of the engineering machinery terminal, the gear part base material is 22CrNi2MoNb, the gear part base is subjected to quenching, high-temperature tempering, rough and finish machining and then carburization treatment by adopting an ion plating method, then an NbHfMoC gradient coating on the surface is deposited by adopting an ion plating and magnetron sputtering composite method, and 2C ion plating targets, 1 Nb magnetron sputtering target, 1 Hf magnetron sputtering target and 1 Mo magnetron sputtering target are adopted during deposition;
the method specifically comprises the following steps:
(1) processing parts: part blank → quenching (830-880 ℃, water cooling) → high temperature tempering (520-550 ℃, water cooling) → rough machining → semi-finishing → destressing tempering (500-550 ℃, air cooling) → finishing (surface roughness Ra 1.6 μm, machining dimension: lower tolerance);
(2) pretreatment of the surface of the part: removing oil stains on the surface of the workpiece by using a metal cleaning agent, rinsing and drying;
(3) and (3) treating the surface of the part: sequentially putting the parts into alcohol and acetone, ultrasonically cleaning for 25min respectively, removing surface impurities and other attachments, drying thoroughly, rapidly putting into a PVD composite coating machine, vacuumizing to 5.5 × 10-3Pa, heating to 300 deg.C, and keeping the temperature for 35 min;
(4) surface glow cleaning: introducing Ar gas, wherein the pressure is 1.8-2.4Pa, the temperature is 290 ℃, the bias voltage power supply voltage is 750V, the duty ratio is 0.2, and the surface is cleaned for 25min by glow discharge;
(5) surface ion cleaning: regulating the bias voltage to 630V, regulating the duty ratio to be 0.3, regulating the Ar gas pressure to be 1.7Pa, regulating the temperature to be 280 ℃, starting an ion source, cleaning ions for 15min, starting an electric arc C target power supply, regulating the C target current to be 120A, and bombarding the ions for 3-4 min;
(6) ion plating carburization: adjusting the power supply of C target ion plating to 105A, the Ar gas pressure to 1.2-1.3 Pa, adjusting the matrix bias voltage to 340V, and carrying out ion carburization for 25-30min at the temperature of 260 ℃;
(7) deposition of NbHfMoC gradient coating: adjusting the Ar gas pressure to 0.9-1.0 Pa, reducing the bias voltage to 180V, adjusting the deposition temperature to 200 ℃, adjusting the C target current to 40A, turning on the magnetron sputtering Nb target current 75A, the magnetron sputtering Hf target current 60A and the magnetron sputtering Mo target current 60A, and depositing the NbHfMoC composite layer for 1-1.5 min; other parameters are unchanged, the C target current is increased, the NbHfMoC composite layer is deposited for 1-1.5 min when the C target current is increased by 2A each time until the C target current is increased to 90A, and then the NbHfMoC composite layer is deposited for 1-1.5 min;
(8) and (3) post-treatment: and (4) turning off the power supply, the ion source and the gas source of each target, and finishing the coating.
Referring to fig. 1, the final transmission gear part of the engineering machinery manufactured by the invention has the following structure: the surface of the part substrate 1 is provided with a surface carburization diffusion layer 2 and an NbHfMoC carbide gradient coating 3 in sequence.
The micro-hardness of the surface of the transmission gear part with the NbHfMoC coating prepared by the embodiment reaches HV2625, the surface hardness (HV650) is improved by nearly 3 times compared with that of a single traditional carburization process, the bonding strength is 72-79N, the bonding strength (28-34N) is improved by 140 percent compared with that of a pure PVD coating, the coating thickness is 1.85 mu m, the surface roughness of the coating reaches Ra 68nm, and under the same friction experiment conditions (CETR UMT ball disc friction wear testing machine, reciprocating linear motion, bearing steel with a grinding ball with the surface hardness of HRC55-60, loading load of 80N, sliding speed of 10mm/s and grinding time of 30min), the wear-resistant coating prepared by the invention has the wear rate of only 2.05-2.32 × 10 min)-6mm3The wear rate is reduced by 72-76% compared to the normal quenched samples without carburization and coating treatment. And the whole effective carburization and coating time is 1.2h, which is less than 5% of the treatment time of the traditional carburization process, and subsequent coping and reprocessing procedures are not needed.
Example 2
According to the preparation method of the engineering machinery final drive gear part, the base material of the final drive gear part is 20CrMnTi, the gear part base is subjected to quenching, high-temperature tempering, rough and finish machining and then carburization treatment by adopting an ion plating method, and then an NbHfMoC gradient coating on the surface is deposited by adopting an ion plating and magnetron sputtering composite method, wherein 2C ion plating targets, 1 Nb magnetron sputtering target, 1 Hf magnetron sputtering target and 1 Mo magnetron sputtering target are adopted during deposition;
the method specifically comprises the following steps:
(1) processing parts: part blank → quenching (910-950 ℃, oil quenching) → high temperature tempering (535-600 ℃, air cooling) → rough machining → semi-finishing → destressing tempering (565-590 ℃, oil cooling) → finishing (surface roughness Ra 0.8 μm, machining dimension: lower tolerance);
(2) pretreatment of the surface of the part: removing oil stains on the surface of the workpiece by using a metal cleaning agent, rinsing and drying;
(3) surface treatment of the parts, namely sequentially putting the parts into alcohol and acetone, ultrasonically cleaning for 25min respectively, removing surface impurities and other attachments, quickly putting the parts into a PVD composite coating machine after full drying, and vacuumizing to 5.5 × 10-3Pa, heating to 300 ℃, and keeping the temperature for 35 min;
(4) surface glow cleaning: introducing Ar gas, wherein the pressure is 1.8-2.4Pa, the temperature is 290 ℃, the bias voltage power supply voltage is 750V, the duty ratio is 0.2, and the surface is cleaned for 25min by glow discharge;
(5) surface ion cleaning: regulating the bias voltage to 630V, regulating the duty ratio to be 0.3, regulating the Ar gas pressure to be 1.7Pa, regulating the temperature to be 280 ℃, starting an ion source, cleaning ions for 15min, starting an electric arc C target power supply, regulating the C target current to be 120A, and bombarding the ions for 3-4 min;
(6) ion plating carburization: adjusting the power supply of C target ion plating to 105A, the Ar gas pressure to 1.2-1.3 Pa, adjusting the matrix bias voltage to 340V, and carrying out ion carburization for 25-30min at the temperature of 260 ℃;
(7) deposition of NbHfMoC gradient coating: adjusting the Ar gas pressure to 0.9-1.0 Pa, reducing the bias voltage to 180V, adjusting the deposition temperature to 200 ℃, adjusting the C target current to 40A, turning on the magnetron sputtering Nb target current 75A, the magnetron sputtering Hf target current 60A and the magnetron sputtering Mo target current 60A, and depositing the NbHfMoC composite layer for 1-1.5 min; other parameters are unchanged, the C target current is increased, the NbHfMoC composite layer is deposited for 1-1.5 min when the C target current is increased by 2A each time until the C target current is increased to 90A, and then the NbHfMoC composite layer is deposited for 1-1.5 min;
(8) and (3) post-treatment: and (4) turning off the power supply, the ion source and the gas source of each target, and finishing the coating.
The surface microhardness of the engineering machinery final drive gear part with the NbHfMoC coating prepared by the embodiment reaches HV2585, the bonding strength is 74-81N, the coating thickness is 1.86 mu m, the coating surface roughness reaches Ra 73nm, and the whole effective carburization and coating time is 1.2 h.
Claims (3)
1. A preparation method of a final transmission gear of engineering machinery is characterized by comprising the following steps: carrying out quenching, high-temperature tempering, rough and finish machining on a base body of the final transmission gear part, then carrying out carburizing treatment by adopting an ion plating method, and then depositing an NbHfMoC gradient coating on the surface by adopting an ion plating and magnetron sputtering composite method, wherein 2C ion plating targets, 1 Nb magnetron sputtering target, 1 Hf magnetron sputtering target and 1 Mo magnetron sputtering target are adopted during deposition;
the method specifically comprises the following steps:
(1) processing gear parts: gear part base blank → quenching → high temperature tempering → rough machining → semi-finishing → destressing tempering → finishing;
(2) surface pretreatment of gear parts: removing oil stains on the surface of the workpiece by using a metal cleaning agent, rinsing and drying;
(3) surface treatment of gear parts, which comprises sequentially placing the parts in alcohol and acetone, ultrasonic cleaning for 25min each, removing surface impurities and other attachments, drying, rapidly placing in PVD composite coating machine, and vacuumizing to 5.5 × 10-3Pa, heating to 300 ℃, and keeping the temperature for 35 min;
(4) surface glow cleaning: introducing Ar gas, wherein the pressure is 1.8-2.4Pa, the temperature is 290 ℃, the bias voltage power supply voltage is 750V, the duty ratio is 0.2, and the surface is cleaned for 25min by glow discharge;
(5) surface ion cleaning: regulating the bias voltage to 630V, regulating the duty ratio to be 0.3, regulating the Ar gas pressure to be 1.7Pa, regulating the temperature to be 280 ℃, starting an ion source, cleaning ions for 15min, starting an electric arc C target power supply, regulating the C target current to be 120A, and bombarding the ions for 3-4 min;
(6) ion plating carburization: adjusting the power supply of C target ion plating to 105A, the Ar gas pressure to 1.2-1.3 Pa, adjusting the matrix bias voltage to 340V, and carrying out ion carburization for 25-30min at the temperature of 260 ℃;
(7) deposition of NbHfMoC gradient coating: adjusting the Ar gas pressure to 0.9-1.0 Pa, reducing the bias voltage to 180V, adjusting the deposition temperature to 200 ℃, adjusting the C target current to 40A, turning on the magnetron sputtering Nb target current 75A, the magnetron sputtering Hf target current 60A and the magnetron sputtering Mo target current 60A, and depositing the NbHfMoC composite layer for 1-1.5 min; other parameters are unchanged, the C target current is increased, the NbHfMoC composite layer is deposited for 1-1.5 min when the C target current is increased by 2A each time until the C target current is increased to 90A, and then the NbHfMoC composite layer is deposited for 1-1.5 min;
(8) and (3) post-treatment: and (4) turning off the power supply, the ion source and the gas source of each target, and finishing the coating.
2. The manufacturing method of a final drive gear of an engineering machine according to claim 1, wherein: the gear part base material is one of 20CrMnTi,20CrMnMo,20CrNi2MoNb, 22CrNi2MoNb, 22CrNi2MoNbH, S48C-V, medium and low carbon steel and alloy steel thereof.
3. The manufacturing method of a final drive gear of an engineering machine according to claim 1, wherein: the gear part produced has the following structure: the surface of the substrate is provided with a surface carburizing diffusion layer and an NbHfMoC carbide gradient coating in turn outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051870.7A CN111690794B (en) | 2020-01-17 | 2020-01-17 | Preparation method of engineering machinery final transmission gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051870.7A CN111690794B (en) | 2020-01-17 | 2020-01-17 | Preparation method of engineering machinery final transmission gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111690794A true CN111690794A (en) | 2020-09-22 |
| CN111690794B CN111690794B (en) | 2022-05-20 |
Family
ID=72476190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010051870.7A Active CN111690794B (en) | 2020-01-17 | 2020-01-17 | Preparation method of engineering machinery final transmission gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111690794B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440083A (en) * | 2020-10-14 | 2021-03-05 | 莱芜职业技术学院 | Manufacturing method of wear-resistant gear |
| CN113774315A (en) * | 2021-09-13 | 2021-12-10 | 北京金轮坤天特种机械有限公司 | Aviation heavy-load gear and preparation method thereof |
| CN114196954A (en) * | 2021-12-07 | 2022-03-18 | 中国第一汽车股份有限公司 | Composite sulfurizing layer and preparation method and application thereof |
| WO2022106240A1 (en) * | 2020-11-18 | 2022-05-27 | Robert Bosch Gmbh | Annealing method for an alloyed workpiece and device for annealing an alloyed workpiece |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409722A (en) * | 2013-07-15 | 2013-11-27 | 北京航空航天大学 | Method for preparing anti-erosion coating on surface of aero engine air compressor blade |
| EP2784799A1 (en) * | 2013-03-28 | 2014-10-01 | CemeCon AG | Dense, hard coatings on Substrates using HIPIMS |
| CN104746030A (en) * | 2015-04-23 | 2015-07-01 | 太原理工大学 | Method for improving bonding strength of hard alloy and diamond coating |
| CN105386049A (en) * | 2015-11-21 | 2016-03-09 | 太原理工大学 | Method for manufacturing gradient hard composite coating on surface of hard alloy |
| CN110468259A (en) * | 2019-09-26 | 2019-11-19 | 济宁学院 | A kind of preparation method of wear-resistant hydraulic pump component |
| CN110484696A (en) * | 2019-09-26 | 2019-11-22 | 济宁学院 | A kind of preparation method of the hydraulic pump component of antifriction antiwear |
| CN110616401A (en) * | 2019-09-26 | 2019-12-27 | 济宁学院 | Preparation method of wear-resistant hydraulic pump part |
| CN110629170A (en) * | 2019-10-30 | 2019-12-31 | 济宁学院 | Method for improving wear resistance of high-pressure hydraulic pump part |
-
2020
- 2020-01-17 CN CN202010051870.7A patent/CN111690794B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2784799A1 (en) * | 2013-03-28 | 2014-10-01 | CemeCon AG | Dense, hard coatings on Substrates using HIPIMS |
| CN103409722A (en) * | 2013-07-15 | 2013-11-27 | 北京航空航天大学 | Method for preparing anti-erosion coating on surface of aero engine air compressor blade |
| CN104746030A (en) * | 2015-04-23 | 2015-07-01 | 太原理工大学 | Method for improving bonding strength of hard alloy and diamond coating |
| CN105386049A (en) * | 2015-11-21 | 2016-03-09 | 太原理工大学 | Method for manufacturing gradient hard composite coating on surface of hard alloy |
| CN110468259A (en) * | 2019-09-26 | 2019-11-19 | 济宁学院 | A kind of preparation method of wear-resistant hydraulic pump component |
| CN110484696A (en) * | 2019-09-26 | 2019-11-22 | 济宁学院 | A kind of preparation method of the hydraulic pump component of antifriction antiwear |
| CN110616401A (en) * | 2019-09-26 | 2019-12-27 | 济宁学院 | Preparation method of wear-resistant hydraulic pump part |
| CN110629170A (en) * | 2019-10-30 | 2019-12-31 | 济宁学院 | Method for improving wear resistance of high-pressure hydraulic pump part |
Non-Patent Citations (2)
| Title |
|---|
| 张文毓: "硬质合金涂层刀具研究进展", 《稀有金属与硬质合金》 * |
| 李学娇等: "热障涂层研究进展", 《中国陶瓷》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440083A (en) * | 2020-10-14 | 2021-03-05 | 莱芜职业技术学院 | Manufacturing method of wear-resistant gear |
| WO2022106240A1 (en) * | 2020-11-18 | 2022-05-27 | Robert Bosch Gmbh | Annealing method for an alloyed workpiece and device for annealing an alloyed workpiece |
| CN113774315A (en) * | 2021-09-13 | 2021-12-10 | 北京金轮坤天特种机械有限公司 | Aviation heavy-load gear and preparation method thereof |
| CN113774315B (en) * | 2021-09-13 | 2023-11-28 | 北京金轮坤天特种机械有限公司 | Aviation heavy-duty gear and preparation method thereof |
| CN114196954A (en) * | 2021-12-07 | 2022-03-18 | 中国第一汽车股份有限公司 | Composite sulfurizing layer and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111690794B (en) | 2022-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111690794B (en) | Preparation method of engineering machinery final transmission gear | |
| CN111485070B (en) | Preparation process of antifriction and wear-resistant gear part | |
| CN108411244B (en) | Method for improving surface tribological performance of M50NiL bearing steel | |
| CN110616401B (en) | Preparation method of wear-resistant hydraulic pump part | |
| JP2877013B2 (en) | Surface-treated metal member having excellent wear resistance and method for producing the same | |
| CN110468259B (en) | Preparation method of wear-resistant hydraulic pump part | |
| CN105385829B (en) | A kind of surface controllable composite strengthening method of forged steel crankshaft material | |
| CN106367712B (en) | A kind of surface of workpiece based on the secondary lubrication of oil storage nitrogenizes+quenches composite treatment technology and product | |
| CN104762629A (en) | Processing technology for gearbox gear | |
| CN113774315B (en) | Aviation heavy-duty gear and preparation method thereof | |
| CN110629170B (en) | Method for improving wear resistance of high-pressure hydraulic pump part | |
| CN110484696B (en) | Preparation method of antifriction and wear-resistant hydraulic pump part | |
| CN108971910A (en) | A kind of processing technology of end-tooth | |
| CN108103495B (en) | High-temperature-resistant high-entropy alloy tool steel coating material and preparation method of coating | |
| CN111254393B (en) | Preparation method of wear-resistant bulldozer transmission shaft part | |
| CN114107879A (en) | Surface treatment method for improving wear resistance of titanium alloy under spent oil lubrication condition | |
| CN112475822A (en) | Surface composite treatment method for root part of mold core of extrusion mold | |
| CN112647040A (en) | Ta-c base multilayer wear-resistant cutter coating and preparation method thereof | |
| CN108517488B (en) | A kind of alloy material parts surface anticorrosion antiwear composite coating and preparation method thereof | |
| CN112440083A (en) | Manufacturing method of wear-resistant gear | |
| CN104368817B (en) | A kind of process of surface treatment of copper-base powder metallurgy part | |
| CN111519001A (en) | Manufacturing method of small-size strong-toughness eccentric motor shaft | |
| CN107937913A (en) | A kind of production technology of pallet | |
| CN114875401A (en) | Surface modification method for gear shaft of high-pressure hydraulic pump | |
| CN110387527A (en) | A kind of high rigidity self-lubricating composite coating and preparation method thereof for saw blade |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240123 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Country or region after: China Address before: No.16 Haichuan Road, Jining high tech Zone, Shandong Province, 272001 Patentee before: JINING University Country or region before: China |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240529 Address after: No. 14, Shangyangjiatang Group, Jianshan Community, Tianding Street, Yuelu District, Changsha City, Hunan Province, 410000 Patentee after: Changsha Xuanyu Machinery Equipment Co.,Ltd. Country or region after: China Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Country or region before: China |