CN109136816A - A kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate - Google Patents

A kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate Download PDF

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Publication number
CN109136816A
CN109136816A CN201811329493.8A CN201811329493A CN109136816A CN 109136816 A CN109136816 A CN 109136816A CN 201811329493 A CN201811329493 A CN 201811329493A CN 109136816 A CN109136816 A CN 109136816A
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CN
China
Prior art keywords
electric arc
sample
steel plate
arc spraying
spraying
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Pending
Application number
CN201811329493.8A
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Chinese (zh)
Inventor
王延庆
刘增光
吴北成
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN201811329493.8A priority Critical patent/CN109136816A/en
Publication of CN109136816A publication Critical patent/CN109136816A/en
Pending legal-status Critical Current

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    • 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
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131Wire arc spraying
    • 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
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06Metallic material
    • C23C4/08Metallic material containing only metal elements
    • 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
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/123Spraying molten metal

Abstract

The present invention relates to a kind of self-lubricating bearing electric arc spraying preparation methods for covering copper powder steel plate, comprising the following steps: 1) carries out surface preparation to matrix steel plate;2) opening plenum system opens power supply after so that compressed air is passed through electric arc spraying equipment;3) Interal fixation is placed on a position, first picks up spray gun in the fixed place of non-sample and adjusts electric arc, wire feed rate arrival normal range (NR);4) change electric current, voltage, wire feed rate respectively to spray to obtain a variety of various samples, wherein at least spray the different numbers of plies there are two types of sample;5) it is packed into sample strip after end sample to be sprayed is cooling and makes marks.Conventional sintering mode is replaced with the method for electric arc spraying, realization obtains the copper coating structure for meeting technique requirement with hot-spraying technique;Electric arc spraying equipment is small in size, light-weight, and wearing terrain is few, and spraying is flexible and convenient.

Description

A kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate
Technical field
The present invention relates to a kind of self-lubricating bearing processing method for covering copper powder steel plate, specially a kind of self-lubricating bearing is used Cover the electric arc spraying preparation method of copper powder steel plate.
Background technique
Self-lubricating bearing has outstanding self-lubrication and reliability, is suitable for making in the state of not needing maintenance for a long time With.Other than needing to meet carrying, antifriction, the groundworks performance such as wear-resisting, high-precision, high revolving speed, high temperature resistant, high load, The requirements such as long-life, pollution-free, lightweight, have become the common demands of client, can satisfy mechanical equipment to member Device miniaturization, productivity is high, and long service life is laborsaving, energy saving and pollution-free etc. requirement.From current domestic and international technology From the point of view of development, the automation of self-lubricating bearing material, high efficiency, high quality of production are the key that self-lubricating bearing production.
The preparation of self-lubricating bearing material at present is mainly sintering process, and agglomerating plant production there is a problem of following: furnace Body is longer, and equipment is huge, and debugging is difficult, it is difficult to guarantee enough sintering precisions;In-furnace temperature is difficult to control, and actual temperature is examined There is more difficulty;Power consumption is big, expensive;Daily maintenance maintenance consumption is given up larger.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of electric arc sprayings for covering copper powder steel plate of self-lubricating bearing Preparation method.
The technical solution adopted by the present invention is that: a kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate, The following steps are included:
Step 1) carries out surface preparation to matrix steel plate, in sand-blasting machine on the steel plate with the quartz sand spray of 60 mesh, only Change, roughening working surface;
Step 2) opening plenum system opens power supply after so that compressed air is passed through electric arc spraying equipment;
Step 3) Interal fixation is placed on a position, first picks up spray gun in the fixed place of non-sample and adjusts electric arc, wire feed Rate reaches normal range (NR);
Step 4) changes electric current, voltage, wire feed rate respectively and sprays to obtain a variety of various samples, and wherein at least there are two types of examinations Sample sprays the different numbers of plies;
It is packed into sample strip after step 5) end sample to be sprayed is cooling and makes marks.
Electric current described in step 4) is 180A, voltage 25V, wire feed rate 13.1V, single layer spraying.
Electric current described in step 4) is 200A, voltage 25V, wire feed rate 15.3V, two-double spray coating.
The beneficial effects of the present invention are: replacing conventional sintering mode with the method for electric arc spraying, hot-spraying technique is used in realization Obtain the copper coating structure for meeting technique requirement;Electric arc spraying equipment is small in size, light-weight, and wearing terrain is few, sprays flexibly side Just.A set of equipment can carry out corrosion protection design to the component of various shape and size, spray corresponding resistant material coating, work Process system has general applicability, to promote flow design;The rational design of coating structure can provide long-term anticorrosion, Do not have to compare therewith in other anti-corrosion methods.
Detailed description of the invention
Fig. 1 is the Olympus Optical shape appearance figure of the arc spraying coating of sample b1-b3.
Fig. 2 is the metallographic microscope shape appearance figure of arc spraying coating.
Fig. 3 is sample b1-b3 arc spraying coating analysis of porosity figure.
Fig. 4 is shape appearance figure before and after sample structure strength test.
Specific embodiment
The equipment of use includes: power supply, arc pistol, silk material feed mechanism, high pressure gas cylinder or air compressor, control system System etc., principle are to send out two kinds of conductive materials being isolated from each other before being contacted by wire-feed motor with contact nozzle, as Anode and cathode in spraying process, two conducting wires feed when short circuit to generate electric arc.Arc-melting is at drop, high pressure gas Pass through nozzle and be blown into molten drop, is atomized into the very small atomizing particle of partial size, sprayed particle high-speed impact substrate Surface forms dense coating.
Electric power main circuit is made of step-down transformer, silicon rectifier and external behavior adjustment mechanism.For the specific of injection Power supply has constant voltage characteristic, i.e., its output voltage is substantially unrelated with output electric current at steady state, and is also claimed For planar power characteristic.
Arc pistol is made of shell, ignition tip, nozzle, atomization gas cap, arc mask etc..
Silk material feed mechanism includes direct current generator, speed reducer, feeding roller, pressing mechanism, feeding hose and draw-off godet composition.
Control system includes compressed air pressure reducer, pressure gauge, air filter, oil water separator, ammeter, voltage Table, sprayer, current control knob, voltage regulator and circuit safety device.
Embodiment
1) select Q235 steel as basis material, outer dimension is long 75mm × wide 42mm × plate thickness 12.5mm;Using Copper wire is as sprayed on material.
2) surface preparation is carried out to matrix steel plate, in sand-blasting machine on the steel plate with the quartz sand spray of 60 mesh, purifies, is thick Change working surface.
3) opening plenum system opens power supply after so that compressed air is passed through electric arc spraying equipment.
4) Interal fixation is placed on a position, first picks up spray gun in the fixed place of non-sample and adjusts electric arc, wire feed rate Reach normal range (NR).
5) be respectively set electric current, voltage, wire feed rate and spraying the number of plies, obtain three kinds of test specimens, use electric current for 180A, voltage 25V, wire feed rate 13.1V, single layer spraying obtain sample b1;It uses electric current for 200A, voltage 25V, send Silk speed is 15.3V, and single layer spraying obtains sample b2;Use electric current for 200A, voltage 25V, wire feed rate 15.3V is double-deck Spraying, obtains sample b3.The control sample of above-mentioned three kinds of samples and the current traditional mode of production of enterprise is carried out than school.Design parameter ginseng It is shown in Table 1.
Table 1
6) it is packed into sample strip after end sample to be sprayed is cooling and makes marks.
Morphology analysis can intuitively see the plasma-coated structure of 3 samples, it can be seen that distribution of pores.It is first It first observes photograph with Olympus to the surface topography of arc spraying coating to do with sample, pattern is as shown in Figure 1.In various works After completing spraying under skill parameter, sprayed 3 samples and enterprise is compared into sample, section sample is made.During the preparation process, It should be specifically noted that not destroy the structure of particle and the stretching for preventing coating granule in coating.When the structure of analysis arc spray coatings When, the side of sample is cut and is selected.Sample should be cut on substrate from coating.Power used in polishing is answered as small as possible. When cutting sample, it should prevent coating from overheating.Three mesh metallographic microscopes are just being set using CMY-200Z image pick-up type and are carrying out gold under 100 times It mutually observes, sample b1, b2, b3 section surface topography difference is as shown in Figure 2.On the basis of observing metallographic, using Image-Pro Plus6.0 software is opened the super depth of field metallograph of the coating morphology of acquisition on software, is formed to copper powder in figure layer Structure dyed after data are checked in Statistics, further obtain spraying copper powder layer porosity, such as Fig. 3 institute Show, specific data are as shown in table 2.
Table 2
By the way that porosity just can be obtained after software analytical calculation and table statistics, all with standard sample comparison electric arc spraying porosity Less than sample porosity, the porosity of b1 is best suitable for porosity requirement in contrast.Being 2 layers when increasing the spraying number of plies is hole Rate has dropped 5.3%;Increasing electric current can be such that porosity reduces with wire feed rate, and porosity has dropped 1.2%.
With resin glue by sample and mating plate it is viscous it is glutinous after use universal tensile machine extension test, power when record is broken calculates Bond strength out.Sample such as Fig. 4 after stretching.Result such as 3 institute of table of maximum, force and calculations incorporated intensity is recorded after tension test Show.
Table 3
Choosing b3 and b1 is experimental sample, and as can be seen from the table, the bond strength of sample b3 is higher, more meets production and wants It asks.
In conclusion sample changes electric current and wire feed rate in terms of porosity changes smaller, the spraying number of plies to porosity Increase can reduce porosity, and the porosity of all samples compares enterprise, and to compare sample all lower, and it is most close that b1 with enterprise compares sample.Knot Increasing electric current, wire feed rate, the spraying number of plies in terms of closing intensity can be improved the bond strength of coating, and b3 sample, which is more in line with, to be wanted It asks.

Claims (3)

1. a kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate, characterized in that the following steps are included:
Step 1) carries out surface preparation to matrix steel plate, in sand-blasting machine on the steel plate with the quartz sand spray of 60 mesh, purifies, is thick Change working surface;
Step 2) opening plenum system opens power supply after so that compressed air is passed through electric arc spraying equipment;
Step 3) Interal fixation is placed on a position, first picks up spray gun in the fixed place of non-sample and adjusts electric arc, wire feed rate Reach normal range (NR);
Step 4) changes electric current, voltage, wire feed rate respectively and sprays to obtain a variety of various samples, and wherein at least there are two types of samples to spray Apply the different numbers of plies;
It is packed into sample strip after step 5) end sample to be sprayed is cooling and makes marks.
2. a kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate according to claim 1, feature It is that electric current described in step 4) is 180A, voltage 25V, wire feed rate 13.1V, single layer spraying.
3. a kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate according to claim 1, feature It is that electric current described in step 4) is 200A, voltage 25V, wire feed rate 15.3V, two-double spray coating.
CN201811329493.8A 2018-11-09 2018-11-09 A kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate Pending CN109136816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811329493.8A CN109136816A (en) 2018-11-09 2018-11-09 A kind of self-lubricating bearing electric arc spraying preparation method for covering copper powder steel plate

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Application Number Priority Date Filing Date Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1912409A (en) * 2006-07-24 2007-02-14 大连三环复合材料技术开发有限公司 Bimetal self-lubricating oscillating bearing and its manufacturing method
CN101178094A (en) * 2007-12-06 2008-05-14 山东大学 Method for preparing steel-copper composite sleeve by spraying cold-pressing mode
CN102691024A (en) * 2012-06-11 2012-09-26 燕山大学 Copper-molybdenum disulfide self-lubricating conductive coating and preparation method thereof
CN103890420A (en) * 2011-09-13 2014-06-25 马勒国际公司 Thermal spray application of sliding bearing lining layer
CN104404441A (en) * 2014-12-17 2015-03-11 江苏省常熟环通实业有限公司 Preparation method for copper-plated steel band
CN108642428A (en) * 2018-04-11 2018-10-12 北京理工大学 A kind of deicing cu coating

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1912409A (en) * 2006-07-24 2007-02-14 大连三环复合材料技术开发有限公司 Bimetal self-lubricating oscillating bearing and its manufacturing method
CN101178094A (en) * 2007-12-06 2008-05-14 山东大学 Method for preparing steel-copper composite sleeve by spraying cold-pressing mode
CN103890420A (en) * 2011-09-13 2014-06-25 马勒国际公司 Thermal spray application of sliding bearing lining layer
CN102691024A (en) * 2012-06-11 2012-09-26 燕山大学 Copper-molybdenum disulfide self-lubricating conductive coating and preparation method thereof
CN104404441A (en) * 2014-12-17 2015-03-11 江苏省常熟环通实业有限公司 Preparation method for copper-plated steel band
CN108642428A (en) * 2018-04-11 2018-10-12 北京理工大学 A kind of deicing cu coating

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