CN104498936B - The method that mechanical induction synthesizes metal ceramic wear-resisting layer - Google Patents

The method that mechanical induction synthesizes metal ceramic wear-resisting layer Download PDF

Info

Publication number
CN104498936B
CN104498936B CN201410749468.0A CN201410749468A CN104498936B CN 104498936 B CN104498936 B CN 104498936B CN 201410749468 A CN201410749468 A CN 201410749468A CN 104498936 B CN104498936 B CN 104498936B
Authority
CN
China
Prior art keywords
friction
metal ceramic
resisting layer
wear
ceramic wear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410749468.0A
Other languages
Chinese (zh)
Other versions
CN104498936A (en
Inventor
杨屹
杨刚
周宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan University
Original Assignee
Sichuan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sichuan University filed Critical Sichuan University
Priority to CN201410749468.0A priority Critical patent/CN104498936B/en
Publication of CN104498936A publication Critical patent/CN104498936A/en
Application granted granted Critical
Publication of CN104498936B publication Critical patent/CN104498936B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C24/00Coating starting from inorganic powder
    • C23C24/02Coating starting from inorganic powder by application of pressure only
    • C23C24/06Compressing powdered coating material, e.g. by milling
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/14Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The invention discloses a kind of surface treatment method, especially a kind of method of mechanical induction synthesis metal ceramic wear-resisting layer.The present invention provides the method for mechanical induction synthesis metal ceramic wear-resisting layer a kind of easy to operate and relatively low energy consumption, comprise the following steps:A, friction pair is built using mechanical equipment, and pending part is formed the secondary part of friction;B, the surface spraying secondary on pending part time job surface and its corresponding friction covers one layer of anti-wear agent;C, load is applied to friction is secondary, operation mechanical equipment causes the subtask that rubs;D, after friction subtask to the time set, the part being disposed with higher temperature is taken out, is cooled to room temperature under field conditions (factors).Due to synthesizing metal ceramic wear-resisting layer using mechanical induction, compared with other surface modifying methods, this method has stronger stability, and will not produce because the uneven distribution that heat treatment causes part base solid materials microstructure structure to change with performance.

Description

The method that mechanical induction synthesizes metal ceramic wear-resisting layer
Technical field
The present invention relates to a kind of surface treatment method, especially a kind of side of mechanical induction synthesis metal ceramic wear-resisting layer Method.
Background technology
In order to improve the wearability of machine components and the working life in severe Service Environment, domestic and international researcher couple The surface strengthening technology of part has carried out substantial amounts of research work, and the theory i.e. surface for foring comparative maturity is modified theory. Such as traditional shot peening strengthening, Surface heat-treatent, the surface treatment of high-energy ionic beam and built-up welding, PVD coating surface engineering technologies. Its reinforcing approach is predominantly by varying machinery part surface institutional framework or constituent so as to obtain required performance.
Matsumoto etc. uses induction coil electrode assembly, produces nitrogen or nitrogen-hydrogen plasma, thus to titanium, steel etc. into Surfaces nitrided processing is gone, TiN layer and the Fe that thickness is about 10 μm in the Surface Creation of titanium and steel4N layers, finally so that material Wear resistance and corrosion resistance be greatly improved, open using plasma this high energy beam to material table Face is modified the new page of processing.Fang Yu of Harbin Institute of Technology et al. have studied a kind of using spark erosion technique Surface modifying method, it is on the basis of traditional electric discharge machining method, by special semi-sintered electrode, in electrical fire One layer of hard carbide ceramics can be quickly formed in workpiece surface in flower process, so that reaching improves workpiece surface performance Purpose.PVD (physical vapour deposition (PVD)) coating process succeeded in developing in recent years by multi sphere Vacuum equipment maker of the U.S., Ke Yi Material surface depositing TiN, Al2O3, TiC etc. there is high rigidity, high abrasion, Gao Naichong and the low coating of friction coefficient so that machinery Part service life is obviously prolonged.
Although surface engineering technology is quickly grown, many technical problems are still remained in terms of engineer application, such as:It is right For new technology, technical know-how research is still immature, and industrial applications effect is unsatisfactory, of high cost;In traditional table In terms of face modification treatment technology, it is various and consume energy tight to equally exist manufacture long processing period, surface modification treatment process Weight, problems of high cost;In addition some processing methods can also produce pollution to environment.At energy-efficient, environmentally friendly efficiency Have in mind, it is very urgent to develop new processing technology for surface modification.
The content of the invention
The technical problems to be solved by the invention are to provide mechanical induction synthesis gold a kind of easy to operate and relatively low energy consumption Belong to the method for ceramic wearing coat.
The method of mechanical induction synthesis metal ceramic wear-resisting layer used by its technical problem of present invention solution, including it is following Step:
A, friction pair is built using mechanical equipment, and pending part is formed the secondary part of friction;
B, the surface spraying secondary on pending part time job surface and its corresponding friction covers one layer of anti-wear agent;
C, load is applied to friction is secondary, operation mechanical equipment causes the subtask that rubs;
D, after friction subtask to the time set, the part of being disposed with higher temperature is taken out and cold But.
It is further that in step A, before structure friction is secondary, pending part is done into oil removal treatment first.
It is further that the oil removal treatment is in the following ways:Pending part is changed in electrochemical deoiling liquid Oil removal treatment is learned, oil is dipped to and eliminates, then takes out and stands a period of time at room temperature.
It is 500N~8000N to the secondary load applied of friction in step C to be further.
Be further, in step C, when rub subtask when, it is resistance to according to the surface supply that actual conditions are secondary to friction Grinding agent.
Be further, in D steps, time for setting as 5 minutes~16 it is small when.
It is further that the material of pending part is all metal materials.
It is further that anti-wear agent used is by SiO2、Al2O3、TiO2、Fe2O3、MgO、K2O、CaO、MoS2Mixed preparing Form.
It is further that the mass percent of anti-wear agent component is:SiO2For 40~60%, Al2O3For 20~40%, TiO2For 1~5%, Fe2O3It is 1~5%, K for 1~5%, MgO2O is that 0.3~4%, CaO is 0.1~3%, MoS2For 0.05~ 2%.
It is further that the frequency of the friction subtask is per minute for 500~4000 times.Wait to locate for revolution class Part is managed, working frequency is exactly 500~4000 rpms.
It is of the invention to be had the following advantages compared with existing conventional art:
1st, in the technique of surface treatment, the present invention synthesizes metal ceramic wear-resisting layer using mechanical induction, and other Surface modifying method is compared, and this method has stronger stability, and will not be produced because heat treatment causes part base solid material The uneven distribution that changes with performance of institutional framework.
2nd, on the other hand the cycle of the surface modification treatment of the present invention compared to shorter, under normal conditions the single treatment time be 2~4 it is small when, and can once handle multiple parts, greatly improve production efficiency.
3rd, in the method, the anti-wear agent not made full use of may be reused, and improve the utilization rate of raw material, section About production cost.
4th, since the method for the present invention can significantly improve part in piece surface inductive formation metal ceramic wear-resisting layer Surface abrasion resistance, so as to improve the service life of part;By the practice examining in factory, part is carried out using the present invention The service life of more than 10 times of parts with frication pair can be generally improved after surface modification treatment.
5th, invention method can repair the parts with frication pair by long-time wear out failure again, so that part Recycling, the cost of a large sum of renewal part is saved for factory.
6th, surface-treated machine parts is carried out by the method for the present invention, due to good surface property, greatly Reduce work generation noise and vibration, save be wasted in abrasion on the energy.The serious energy is faced in the whole world Today of crisis, has saved the substantial amounts of energy in terms of industrial production;The important meaning for having broad prospects and promoting.
Brief description of the drawings
Fig. 1 is schematic diagram when pending part is handled using the present invention;
Parts, position and numbering in figure:Motor 1, fixing device 2, force application apparatus 3, fixed friction block 4, transmission device 5th, pending part 6.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
The present invention comprises the following steps:
A, is placed on progress electrochemical deoiling processing in steel product electrochemical deoiling liquid by pending part 6, is dipped to oil and removes To the greatest extent, then take out and stand a period of time at room temperature;The working surface of pending part 6 can be cylindrical, hole, it is complex-curved or Person's plane etc., this step can be saved in the case of pending part 6 is more clean;
B, by modes such as mechanical equipment or mechanical processings, builds friction pair, pending part 6 is become friction pair A part;The secondary existing mechanical equipment of generally use of structure friction can be completed, and select that equipment to need according to pending zero 6 working surface of part determines, such as when working surface is cylindrical or hole, it is possible to utilize the structure rolling friction of existing lathe It is secondary;When working surface is complex-curved, then numerically controlled lathe can be used to build sliding friction pair;In Fig. 1, pending part 6 It is fixed in fixing device 2, it forms friction pair with the fixed friction block 4 on force application apparatus 3;
C, carries out anti-wear agent spraying on the secondary surface of friction respectively, by the nozzle in device in pending part during spraying The surface of 6 working surfaces and corresponding friction pair covers one layer of anti-wear agent;Spraying is preferably maintained in uniformly, so that follow-up is rubbed Wipe;Anti-wear agent mainly uses common cermet raw material, such as oxide, carbide, nitride, boride, silicide etc. Material, can match according to demand.
D, as shown in Figure 1, giving friction the secondary load for applying 500N~8000N by force application apparatus 3, runs motor 1, transmission Device 5 pending part 6 rotated, be translatable or curvilinear motion, so that friction subtask, pending part 6 at this time Working surface will rub with the fixed friction block 4 of another part, the anti-wear agent and pending zero under the action of high moderate pressure The working surface of part 6 gradually mixes, and finally forms cermet coating in pending part 6, meanwhile, can root in the process of running Anti-wear agent is fed in time according to the actual conditions surface secondary to friction;This mode is advantageous in that friction can not only produce office Portion's high temperature, and anti-wear agent can be made to be evenly distributed, this causes the working face inductive formation metal ceramic wear-resisting layer of pending part 6 It is more uniform;
E, with 5min~16 when small after the part of being disposed with higher temperature is taken out, it is cold under field conditions (factors) But to room temperature, finally part is cleared up;It can also use and force cooling, depending on needing as the case may be.
In above method, pending 6 material of part is all metals.Such as cast iron, steel, copper, aluminium metal material, can also It is alloy material.
In above method, the anti-wear agent used in the step C is by including SiO2、Al2O3、TiO2、Fe2O3、MgO、K2O、 CaO、MoS2Component mixed preparing forms.Specific component and content are shown in Table 1.
1 anti-wear agent component (wt/%) of table
Component SiO2 Al2O3 TiO2 Fe2O3 MgO K2O CaO MoS2
Content 40-60 20-40 1-5 1-5 1-5 0.3-4 0.1-3 0.05-2
In above method, in the step D parameter regulation scope of rotating speed and load according to workpiece material it is different Difference, is specially:Fricting movement 500~4000r/min of rotating speed, pressure loading is in 500N~8000N scopes;On the other hand carry out The time of surface modification treatment, its probable ranges was when 5min~16 are small depending on specific works condition.
Embodiment is given below so that the present invention to be specifically described, it is necessary to which indicated herein is following embodiments It is used to further illustrate the present invention, it is impossible to be interpreted as limiting the scope of the invention, which is skilled in technique Personnel's some nonessential modifications and adaptations that content makes the present invention according to the present invention still belong to protection scope of the present invention.
In addition, what deserves to be explained is the element percentage used in following embodiments is weight percentage;After processing The hardness measurement of part carries out on the type Brinell's machines of HB -3000.
Case study on implementation 1
(No. 45 quenched for common machine parts steel for the part material of carry out surface modification treatment used in inventive embodiments Steel), part outer surface is cylindrical, and friction pair is built by mechanical device on part outer surface, adds anti-wear agent operation, used Wear-resisting agent prescription is 50%SiO2, 40%Al2O3, 3%TiO2, 2%Fe2O3, 2.5%MgO, 1.3%K2O, 0.3%CaO, 0.9%MoS2, rotating speed 900r/min, pressure 3500N, the secondary run time that rubs is 1h, completes mechanical induction synthesis table Face ceramic layer thickness is 2 microns, and piece surface HB hardness is 210.
Case study on implementation 2
The part material of carry out surface modification treatment used in inventive embodiments is common machine parts steel (Q235), zero Part outer surface is cylindrical, and friction pair is built by mechanical device on part outer surface, adds anti-wear agent operation, anti-wear agent used It is formulated as 45%SiO2, 45%Al2O3, 2%TiO2, 2%Fe2O3, 3.5%MgO, 1.4%K2O, 0.2%CaO, 0.9%MoS2, Rotating speed is 4000r/min, pressure 2000N, and the secondary run time that rubs is 7h, completes mechanical induction synthetic surface ceramics thickness Spend for 12 microns, piece surface HB hardness is 260.
Case study on implementation 3
The part material of carry out surface modification treatment used in inventive embodiments is common machine parts steel (QT450), Accessory inner surface is endoporus, and friction pair is built by mechanical device on accessory inner surface, adds anti-wear agent operation, used wear-resisting Agent prescription is 50%SiO2, 41%Al2O3, 2%TiO2, 1%Fe2O3, 3.5%MgO, 1.1%K2O, 0.3%CaO, 1.1% MoS2, rotating speed 1700r/min, pressure 8000N, the secondary run time that rubs is 16h, completes mechanical induction synthetic surface pottery Porcelain thickness is 20 microns, and piece surface HB hardness is 280.
Case study on implementation 4
(No. 45 quenched for common machine parts steel for the part material of carry out surface modification treatment used in inventive embodiments Steel), part outer surface is complex-curved, and friction pair is built by mechanical device on part outer surface, adds anti-wear agent operation, Wear-resisting agent prescription used is 43%SiO2, 47%Al2O3, 1%TiO2, 4%Fe2O3, 2.5%MgO, 0.4%K2O, 2.1%CaO, 0.9%MoS2, rotating speed 3000r/min, pressure 7500N, the secondary run time that rubs is 3h, completes mechanical induction synthesis table Face ceramic layer thickness is 21 microns, and piece surface HB hardness is 281.
Case study on implementation 5
The part material of carry out surface modification treatment used in inventive embodiments is common machine parts steel (2Cr13), Part outer surface is complex-curved, and friction pair is built by mechanical device on part outer surface, adds anti-wear agent operation, used Wear-resisting agent prescription is 40%SiO2, 50%Al2O3, 4%TiO2, 2%Fe2O3, 1.5%MgO, 1.3%K2O, 0.3%CaO, 0.9%MoS2, rotating speed 3000r/min, pressure 4500N, the secondary run time that rubs is 8h, completes mechanical induction synthesis table Face ceramic layer thickness is 25 microns, and piece surface HB hardness is 300.

Claims (7)

1. the method that mechanical induction synthesizes metal ceramic wear-resisting layer, it is characterised in that:Comprise the following steps:
A, friction pair is built using mechanical equipment, and pending part is formed the secondary part of friction;
B, the surface even application secondary on pending part time job surface and its corresponding friction covers one layer of anti-wear agent, wear-resisting The mass percent of agent component is:SiO2For 40~60%, Al2O3For 20~40%, TiO2For 1~5%, Fe2O3For 1~5%, MgO is 1~5%, K2O is that 0.3~4%, CaO is 0.1~3%, MoS2For 0.05~2%;
C, load is applied to friction is secondary, operation mechanical equipment causes the subtask that rubs;
D, after when the subtask 5 minutes~16 that rubs is small, the part being disposed with higher temperature is taken out and cooled down.
2. the method for mechanical induction synthesis metal ceramic wear-resisting layer as claimed in claim 1, it is characterised in that:In step A, Before structure friction is secondary, pending part is done into oil removal treatment first.
3. the method for mechanical induction synthesis metal ceramic wear-resisting layer as claimed in claim 2, it is characterised in that:At the oil removing Reason is in the following ways:Pending part is subjected to electrochemical deoiling processing in electrochemical deoiling liquid, oil is dipped to and eliminates, Ran Houqu Go out and stand a period of time at room temperature.
4. the method for mechanical induction synthesis metal ceramic wear-resisting layer as claimed in claim 1, it is characterised in that:In step C, It is 500N~8000N to the secondary load applied of friction.
5. the method for mechanical induction synthesis metal ceramic wear-resisting layer as claimed in claim 1, it is characterised in that:In step C, When rub subtask when, anti-wear agent is fed according to the surface that actual conditions are secondary to friction.
6. the method for mechanical induction synthesis metal ceramic wear-resisting layer as claimed in claim 1, it is characterised in that:Pending part Material be all metal materials.
7. the method for the mechanical induction synthesis metal ceramic wear-resisting layer as described in claim 1 to 6 any claim, its feature It is:The frequency of the friction subtask is per minute for 500~4000 times.
CN201410749468.0A 2014-12-09 2014-12-09 The method that mechanical induction synthesizes metal ceramic wear-resisting layer Active CN104498936B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410749468.0A CN104498936B (en) 2014-12-09 2014-12-09 The method that mechanical induction synthesizes metal ceramic wear-resisting layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410749468.0A CN104498936B (en) 2014-12-09 2014-12-09 The method that mechanical induction synthesizes metal ceramic wear-resisting layer

Publications (2)

Publication Number Publication Date
CN104498936A CN104498936A (en) 2015-04-08
CN104498936B true CN104498936B (en) 2018-05-01

Family

ID=52940385

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410749468.0A Active CN104498936B (en) 2014-12-09 2014-12-09 The method that mechanical induction synthesizes metal ceramic wear-resisting layer

Country Status (1)

Country Link
CN (1) CN104498936B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109759443A (en) * 2019-01-09 2019-05-17 成都先进金属材料产业技术研究院有限公司 The method that hot continuous rolling produces big specification pure titanium rod material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09143671A (en) * 1995-11-29 1997-06-03 Suzuki Motor Corp Surface treatment of aluminum material and its treatment film
CN101037635A (en) * 2007-05-11 2007-09-19 徐远 Abrasion-resistant agent having repairing function to metal frictional abrasion surface
CN102230063A (en) * 2011-03-07 2011-11-02 孙静 Method of forming nanostructure on friction surface of metal friction pair and special composition thereof
CN102344846A (en) * 2011-09-06 2012-02-08 天津开发区双利工贸有限公司 Lubricating oil with negative wear self-repair function and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09143671A (en) * 1995-11-29 1997-06-03 Suzuki Motor Corp Surface treatment of aluminum material and its treatment film
CN101037635A (en) * 2007-05-11 2007-09-19 徐远 Abrasion-resistant agent having repairing function to metal frictional abrasion surface
CN102230063A (en) * 2011-03-07 2011-11-02 孙静 Method of forming nanostructure on friction surface of metal friction pair and special composition thereof
CN102344846A (en) * 2011-09-06 2012-02-08 天津开发区双利工贸有限公司 Lubricating oil with negative wear self-repair function and preparation method thereof

Also Published As

Publication number Publication date
CN104498936A (en) 2015-04-08

Similar Documents

Publication Publication Date Title
CN102154609B (en) Preparation method of high-precision roller wear-resistant coating
CN103056425B (en) Gradient composite coating alloy bit of super hard nanometer crystal TiN-CN (carbon nitride)-DLC (diamond-like carbon) and preparation method thereof
CN102618870B (en) Wear-resistant and abrasion-resistant mould and preparation process for forming protective coating on working surface of mould substrate
CN108637588B (en) Repairing method for spiral blade of expansion dryer
CN102166702B (en) Laser cladding repairing method of piston rod
CN102650029A (en) Preparation method for nanometer ceramic composite coating material on surface of hot work die steel
CN103774135B (en) A kind of manufacture craft of furnace bottom collars of new pattern laser cladding compound coating
CN107338434A (en) Wear-resisting composite coating of the spontaneous high-temperature self-lubrication of Laser Cladding in-situ and preparation method thereof
CN104389780A (en) High-pressure pump, plunger and surface enhancing processing technique for plunger
CN103978748A (en) Intermediate-high-temperature self-lubricating multi-arc ion-plated multiple-unit gradient tool coating and preparation method thereof
CN105586562A (en) Process for remanufacturing piston rod of concrete pump truck
CN104498936B (en) The method that mechanical induction synthesizes metal ceramic wear-resisting layer
CN105032745A (en) Method for reinforcing coating on surface of bearing bush alloy layer
CN103540929A (en) Cladding method for magnesium-based alloy surface wear-resistant coating
CN203297606U (en) Energy-saving type piston pin with diamond-like coating
CN110484696B (en) Preparation method of antifriction and wear-resistant hydraulic pump part
CN112359310A (en) Method for coating surface of roll shaft
CN103343313B (en) Method for improving abrasive resistance of overhang hardware fittings of power transmission line
CN203995023U (en) A kind of light durable type print roller
CN105154880A (en) Preparation process of TiCN multilayer composite coating layer on slotting cutter surface of steam turbine rotor
CN105441853A (en) Two-stage compound surface reinforcing method
CN107937860A (en) A kind of preparation method of argon arc remelting Fe base wearing layers
CN109457211A (en) A kind of wear resistant friction reducing coating production of lubrication phase highly dispersed distribution
CN111945158A (en) Composite treatment method for improving wear resistance of metal surface
CN102492917B (en) Thermal spraying method of gas-guide tube of deduster

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant