CN106624675B - The preparation method and brake disc or brake drum of wear-resisting brake disc or brake drum - Google Patents
The preparation method and brake disc or brake drum of wear-resisting brake disc or brake drum Download PDFInfo
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- CN106624675B CN106624675B CN201710062723.8A CN201710062723A CN106624675B CN 106624675 B CN106624675 B CN 106624675B CN 201710062723 A CN201710062723 A CN 201710062723A CN 106624675 B CN106624675 B CN 106624675B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/18—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass brake shoes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/10—Drums for externally- or internally-engaging brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
A kind of preparation of wear-resisting brake disc, brake drum：Process as base material to obtain brake disc, brake drum using high-strength aluminum alloy or magnesium alloy, by lifting be immersed into the conductive metal slot for be configured with following solution：Deionized water is as solvent, solute Na2SiO3·5H2O 8‑15g/L、Na2B4O7 0.5‑15g/L、KF 0.5‑15g/L、CON2H4 0.5‑5g/L、C6H15NO30.5‑20g/l、KOH 0.5‑3g/L；Using asymmetric Bipolar pulse power, and the wire power connection source that will connect brake disc or brake drum is positive, and the stainless steel cathode in brake disc or brake drum hanging apparatus connects power cathode；It controls solution temperature and is in 20 40 DEG C, power supply uses Isobarically Control, and forward current density is kept to be in 2 10A/dm2, when forward voltage rises to 400 420V, Slow loading negative voltage makes negative current density be in 1 6A/dm2, then maintain positive negative sense current density constant, when forward voltage rises to 520 580V, deenergization takes out brake disc or brake drum and cleans up；The film thickness that fine and close wearing layer is formed in brake disc or brake drum surface is 40 60um.The brake disc, brake drum light weight, wearability is good, service life is long.
Description
Technical field
The invention belongs to motor vehicle and electric railway automobile brake disc or brake drum manufacturing technology field, more particularly to
A kind of wear-resisting brake disc, the preparation method of brake drum and obtained brake disc, brake drum.
Background technology
Brake disc, brake drum are automobile or other very important components of vehicle brake system, quality direct relation
To the security performance of vehicle.Current most of brake discs and brake drum are to be made of cast iron, but cast iron wearability is poor, heat dissipation effect
Fruit is bad, if emergency brake in the case of running at high speed, the temperature of brake disc or drum can be increased drastically, and high temperature can make brake disc
Or there is heat fading effect in brake drum itself, wearability reduces, and friction coefficient reduces, and braking distance extends, and even results in braking
Failure；In addition cast iron brake disk, brake drum quality are big, increase the energy consumption of vehicle.The braking currently configured in some racing cars
Disk is made of fibre reinforced wearing layer composite material, although this brake disc lighter weight, there are low temperature braking qualities
Difference, the problems such as carbon fiber is easy to fall off, service life is short, expensive.
Invention content
The technical problem to be solved in the present invention is to provide a kind of light weight, wearability is good, brake disc with long service life or
Brake disc or brake drum made of brake drum manufacturing method and this method.
In order to solve the above technical problem, the present invention provides a kind of wear-resisting brake disc, the preparation methods of brake drum, including
Following steps：
Process brake disc, brake drum：Using high-strength aluminum alloy or magnesium alloy as base material, blank forging or casting are carried out
Brake disc or braking drum shape needed for vehicle are machined into according to drawing afterwards；
Brake disc or brake drum are lifted, conducting wire is used in combination to be electrically connected at brake disc or braking drum basal body；
Configure solution：Select Na2SiO3·5H2O、Na2B4O7、KF、CON2H4、C6H15NO3, KOH as solute, selection is gone
For ionized water as solvent, the configuration concentration of each solute is Na2SiO3·5H2O 8-15g/L、Na2B4O7 0.5-15g/L、KF
0.5-15g/L、CON2H4 0.5-5g/L、C6H15NO3The solution of 0.5-20g/l, KOH 0.5-3g/L, configuration are placed in conductive gold
Belong in slot, the configuration amount of solution needs being capable of the obtained brake disc of immersion step one or drum；
Wearing layer is formed in brake disc or brake drum surface：The brake disc lifted or brake drum are specifically put into configuration
Solution in be immersed in liquid level or less；Use power supply for frequency 100-500Hz, the asymmetric double polar impulse electricity of duty ratio 50%
Source, and the anode in the wire power connection source of brake disc or brake drum will be connected, it will be stainless in brake disc or brake drum hanging apparatus
Steel cathode connects the cathode of power supply；It controls solution temperature and is in 20-40 DEG C, startup power supply simultaneously uses Isobarically Control, keeps positive electricity
Current density is in 2-10A/dm2, when forward voltage rises to 400-420V, start Slow loading negative voltage, make negative current
Density is in 1-6A/dm2, then maintain positive negative sense current density constant, when forward voltage rises to 520-580V, disconnect electricity
Source is taken out brake disc or brake drum and is cleaned up；It is 40-60 in the film thickness for the wearing layer that brake disc or brake drum surface are formed
μm；
Sanding and polishing is carried out to get to the brake disc of light wear-resistant, brake drum to brake disc or brake drum working surface.
The hanging apparatus of the brake disc includes the lifting plate that longitudinal section is inverted U, and top is lifting portion, at lower openings
Both ends are bent into the interconnecting piece being connect with brake disc outward, and the lifting portion is upward through the mounting hole of brake disc and protrudes, supplies
Lifting is used, and the interconnecting piece is tightly attached to the lower surface of non-working surface in the middle part of brake disc；It is parallel respectively except two working face of brake disc
One piece of stainless steel cathode of interval setting, and it is exhausted to accompany nylon between non-working surface in the middle part of stainless steel cathode and adjacent brake disc
Edge cushion block so that the minimum range between stainless steel cathode and brake disc is not less than 10mm, and the A works of brake disc peripheral upper surface
It is equal to make distance between face and the B working faces and respective adjacent stainless steel cathode of lower surface；Each nylon bolt passes through two pieces
Stainless steel cathode, two pieces of nylon cross-over blocks, interconnecting piece and brake disc, and the interconnecting piece for lifting plate is pressed on to the table of brake disc
Face and fixation；Stainless steel cathode electric connection of power supply cathode.
The hanging apparatus of the brake drum includes that longitudinal section is that trapezoidal or inverted U aluminium alloy lifts plate, and top is lifting
Portion, both ends are bent into the interconnecting piece being connect with brake drum outward at lower openings, and the lifting portion is upward through the peace of brake drum
It fills hole and protrudes, for lifting, the interconnecting piece is tightly attached to the lower surface of non-working surface in the middle part of brake drum；The interior cylinder of brake drum
One columnar stainless steel cathode is set in face, distance is uniform between stainless steel cathode outer surface and brake drum inner surface,
And minimum range >=10mm；Nylon cross-over block is equipped with below interconnecting piece, nylon bolt passes through stainless steel cathode, nylon felt pad
Block, interconnecting piece and brake drum, and the interconnecting piece for lifting plate is fixed with brake drum；Stainless steel cathode electric connection of power supply is negative
Pole.
The outer surface of the brake drum is inactive face, is closely arranged a Silicone Case.
The configuration concentration of each solute is preferably 10g/l Na2SiO3·5H2O、8g/l Na2B4O7、2g/l KF、3g/l
CON2H4、5g/l C6H15NO3、2g/l KOH。
Preferred parameter is：It controls solution temperature and is in 25-35 DEG C, setting supply frequency is in 100-200Hz, duty ratio
50%, keep forward current density to be in 5-6A/dm2, when forward voltage rises to 400-410V, start Slow loading negative sense electricity
Pressure, makes negative current density be in 3-4A/dm2, then maintain positive negative sense current density constant.
When using aluminium alloy processing brake disc or brake drum, in the thickness for the wearing layer that brake disc or brake drum surface are formed
For degree between 40-50 μm, the main component of wearing layer is crystalline alpha-Al2O3With crystalline state γ-Al2O3, brake disc or brake drum surface
Microhardness reach Hv1500 or more.
When processing brake disc disk body using magnesium alloy, it is in the wear-resisting thickness layer by layer that brake disc disc surfaces are formed
Between 50-60 μm, wear-resisting main component layer by layer is crystalline state MgO, spinelle and forsterite, and the microhardness of brake disc surface reaches
To Hv1000 or more.
Step 5 is specially：Surface is formed into the brake disc of wearing layer or brake drum is clamped on lathe, with 400-800 mesh
Sand paper to its working face carry out sanding and polishing, so that work surface roughness is reached Ra=1.6 μm.
The present invention also provides brake disc or brake drums, which is characterized in that using any one of claim 1-9 the method systems
.
Compared with prior art, beneficial effects of the present invention are as follows：
The present invention is innovated for the first time using the high strength alumin ium alloy of forging or casting and forming, magnesium alloy as basis material, processing
At brake disc or brake drum, and fine and close wearing layer is innovatively generated in its surface in situ, which is combined with basis material
Intensity is high, has excellent impact flexibility, fatigue strength and good wear-resisting property, can greatly improve the braking safe of vehicle
Property.
1) material of automobile brake disc or brake drum is mainly gray cast iron, density 7.2-7.3g/cm at present3, tension
Intensity requirement is more than 250MPa, and brake disc provided by the present invention or brake drum use 7A04 or other high strength alumin ium alloy systems
Make, 7A04 is 568MPa in the tensile strength of As-extruded, and yield strength 539MPa, density is only 2.85g/cm3, therefore this hair
Bright prepared brake disc or brake drum intensity are much larger than traditional braking disk and brake drum, and weight substantially reduces, to improve
Braking quality, and reduce vehicle energy consumption.
2) using aluminium alloy, magnesium alloy substrates, specific heat capacity is more than gray iron for brake disc provided by the present invention or brake drum,
Thermal conductivity is also more much bigger than gray iron, so brake disc provided by the present invention or brake drum heat dissipation performance are good, can be greatly reduced
Brake disc or the temperature of brake drum, effectively reduce brake system probability of failure, improve vehicle braking safety when continuous brake
Energy.
3) present invention generates Spark Discharges under high pressure using brake disc or brake drum substrate surface, makes electric discharge
Place's temperature moment reaches thousands of degree, and piece surface metal melts at high temperature, and vigorous reaction occurs for the oxygen generated with electrolysis
The oxide for forming molten state, with the extinguishing of electric spark, the oxide of metal and the rapid cooled and solidified formation crystalline state of oxide
Wearing layer, due to experienced high temperature sintering, the wearing layer formed is in metallurgical binding with parent metal, and bond strength is very high,
It is such as α-Al that the present invention, which is formed in brake disc or the wearing layer substance of brake drum surface,2O3Equal crystal habits, have very high hardness
And chemical stability, therefore brake disc prepared by the present invention or brake drum have good wear-resisting, corrosion resistance, overcome
Cast iron plate is easy to wear, the shortcomings that easily getting rusty, and service life is long.
To sum up, the brake disc prepared by the present invention or brake drum relative to traditional braking disk or brake drum have high intensity,
The particular advantages such as high-cooling property, high abrasion rotproofness, light-weight, are installed on the braking safe that vehicle can be greatly improved on vehicle
Performance, and reduce vehicle energy consumption, while the brake disc or the preparation process of brake drum are simple, can wide popularization and application in each
In class vehicle brake disc or the technology of preparing of brake drum, wide market.
Description of the drawings
With reference to the accompanying drawings and detailed description, the present invention is described in further detail.
Fig. 1 is the aluminium alloy brake disc and tooling assembling schematic diagram of embodiment 1.
Fig. 2 is the aluminium alloy brake drum and tooling assembling schematic diagram of embodiment 2.
Fig. 3 is the aluminium alloy brake drum and tooling assembling schematic diagram of embodiment 4.
Specific implementation mode
The parameter of various embodiments of the present invention and obtained result are as shown in Table 1.
Table one
Embodiment 1
The present embodiment is prepared for brake disc as shown in Figure 1 using 7A04 aluminium alloys.Embodiment 1 in technical parameter such as table one
Shown in corresponding data.Used 7A04 aluminium alloys are high strength alumin ium alloy, are 568MPa in the tensile strength of As-extruded, surrender is strong
Degree is 539MPa, density 2.85g/cm3。
(1) brake disc is processed
7A04 aluminium alloy blank forgings are carried out according to forging technology, the blank forged are dissolved, ageing treatment, according to
Drawing is machined.
(2) it lifts
The brake disc that step (1) obtains is subjected to clamping with special tooling.As shown in Figure 1, the lifting dress of the brake disc 1
It sets and lifts plate 3 including trapezoidal or inverted U aluminium alloy, be inverted U-shaped in figure, top is lifting portion 31, both ends at lower openings
It is bent into interconnecting piece 32 outward, the lifting portion 31 is upward through the mounting hole 11 of brake disc and protrudes, for lifting, the company
Socket part 32 is then tightly attached to the lower surface of non-working surface in the middle part of brake disc；Parallel interval is distinguished except brake disc two sides is arranged one piece not
Become rusty steel cathode 5, and nylon cross-over block 4 is accompanied between non-working surface in the middle part of every piece of stainless steel cathode 5 and adjacent brake disc,
So that the minimum range between stainless steel cathode 5 and brake disc 1 is 15mm (must ensure to be not less than 10mm), and placed outside brake disc
Distance is equal between the A working faces on surface and the B working faces of lower surface and respective adjacent stainless steel cathode 5, could protect in this way
It is uniform to demonstrate,prove coating growth in two plane of A, B；Each nylon bolt 4 pass through two pieces of stainless steel cathodes, 5, two pieces of nylon cross-over blocks 4,
Interconnecting piece 32 and brake disc, and the interconnecting piece for lifting plate 3 is pressed on to surface and the fixation of brake disc 1.
By aluminium alloy lifting plate 3 with conducting wire and being electrically connected brake disc ensures that lifting plate is connected firmly with conducting wire, is connected.
(3) solution is prepared
10kg Na are weighed respectively2SiO3·5H2O、8kg Na2B4O7、2kg KF、3kg CON2H4、5kg C6H15NO3、2kg
KOH is added in 1000 liters of deionized waters, is placed in stainless steel sink, and stirring to solute is completely dissolved.
(4) prepared by brake disc surface wearing layer
The present invention uses asymmetric Bipolar pulse power.The brake disc assembled with tooling lifting is put into solution,
The conducting wire of connection aluminium alloy lifting plate 3 processed is closely electrically connected the anode rod above stainless steel sink, and anode rod connects positive pole；
Stainless steel cathode 5 connects power cathode.Solution cooling system is opened, sets solution temperature ranges as 25-35 DEG C.Power parameter is set
For：Frequency 100Hz, duty ratio 50% select Isobarically Control pattern, startup power supply to keep forward current density 6A/dm2, wait for just
When rising to 410V to voltage, starts to load negative voltage, negative current density is made to reach 4A/dm2, hereafter maintain positive negative current
Density is constant, utilizes brake disc surface spark discharge moment to generate thousands of degree high temperature in the process, makes brake disc surface metal
It melts at high temperature and vigorous reaction occurs with oxygen produced by water electrolysis and form molten state oxide, with putting out for electric spark
It goes out, the rapid cooled and solidified of oxide on brake disc metal and surface, to form α-Al in brake disc disc surfaces2O3Equal crystal
The oxide wearing layer of form, with the formation of brake disc surface wearing layer, forward voltage is begun to ramp up, when forward voltage rises to
When 538V, deenergization, between 40-50 μm, microhardness reaches the wear-resisting layer thickness of estimated brake disc surface at this time
Hv1500 or more, takes out brake disc, and disassembling fixture washes with water clean.After testing, the wear-resisting layer thickness of brake disc surface obtained
In 48 μm, microhardness reaches Hv1650.
(5) it polishes
The brake disc handled well is clamped on lathe, brake disc working face is polished with 600 mesh sand paper, makes work
Surface roughness reaches Ra=1.6 μm, stops machine, dismantles brake disc.
The aluminium alloy brake disc of the present embodiment 1 is thus obtained.
Embodiment 2
The present embodiment 2 has first processed aluminium alloy brake drum 7 as shown in Figure 2, and the working face of brake drum (needs wear-resisting
Surface) be brake drum 7 inner cylinder face.
In order to lift brake drum 7 shown in Fig. 2, hanging apparatus includes that longitudinal section is that trapezoidal aluminium alloy lifts plate 3, or
The aluminium alloy lifting plate of inverted U can also, the top for lifting plate is lifting portion 31, and both ends are bent into and make outward at lower openings
The interconnecting piece 32 of Moving plate connection, the lifting portion 31 are upward through the mounting hole 71 of brake drum and protrude, for lifting, the company
Socket part 32 is tightly attached to the lower surface of non-working surface in the middle part of brake drum；Setting one is columnar not in the inner cylinder face of brake drum
Become rusty steel cathode 5, and distance is uniform between 1 inner surface of 5 outer surface of stainless steel cathode and brake disc, and minimum range >=10mm；Connection
32 lower section of portion is equipped with nylon cross-over block 4, and nylon bolt 2 passes through stainless steel cathode 5, nylon cross-over block 4, interconnecting piece 32 and system
Dynamic drum, and the interconnecting piece for lifting plate 3 is fixed with brake drum 7.
The outer surface of the brake drum 7 is inactive face, is closely arranged a Silicone Case 6, for protecting braking
Drum surface does not need the surface of Wear-resistant Treatment, to reduce processing cost.
The method and step for preparing wearing layer is same as Example 1, except that corresponding using one illustrated embodiment 2 of table
Technical parameter, obtained wearing layer also as shown in one embodiment of table, 2 corresponding data, repeat no more.
Embodiment 3
The preparation of MB25 magnesium alloy brake discs.MB25 is high-strength magnesium alloy.
(1) brake disc is processed
The structure of the brake disc of the present embodiment 3 is same as Example 1, and the forging of MB25 magnesium alloy blanks is carried out according to forging technology
It makes, is machined according to drawing.
(2) it lifts
To the brake disc that step (1) obtains be subjected to clamping, it is identical with embodiment 1, it is used in combination conducting wire to be lifted by aluminium alloy
Plate 3 connects brake disc matrix, it is ensured that matrix is connected firmly with conducting wire, is connected.
(3) solution is prepared
10kg Na are weighed respectively2SiO3·5H2O、2kg Na2B4O7、5kg KF、3kg CON2H4、5kg C6H15NO3、3kg
KOH is added in 1000 liters of deionized waters, is placed in stainless steel sink, and stirring to solute is completely dissolved.
(4) prepared by brake disc surface wearing layer
Using asymmetric Bipolar pulse power.The brake disc assembled with tooling lifting is put into solution, aluminium is passed through
Alloy lifts the anode rod above the conducting wire electric connection stainless steel sink of 3 terminal pad matrix of plate, and anode rod connects positive pole, no
Rust steel cathode 5 connects power cathode.Solution cooling system is opened, sets solution temperature ranges as 25-35 DEG C.Power parameter is set
For：Frequency 200Hz, duty ratio 50% select Isobarically Control pattern, startup power supply to keep forward current density 5A/dm2, wait for just
When rising to 400V to voltage, starts to load negative voltage, negative current density is made to reach 3A/dm2, hereafter maintain positive negative current
Density is constant, and the phenomenon in processing procedure is similar when being handled with aluminium alloy brake disc, and is formed then in brake disc disc surfaces
It is the oxide wearing layer of the crystal habits such as MgO, spinelle, with the formation of brake disc surface wearing layer, forward voltage starts
Rise, when forward voltage rises to 556V, deenergization is expected that the wear-resisting layer thickness of brake disc surface is between 50-60 μm at this time,
Microhardness reaches Hv1000 or more, takes out brake disc, and disassembling fixture washes with water clean.After testing, the braking dish cart obtained
The wear-resisting layer thickness in face is in 57 μm, and microhardness reaches Hv1160.
(5) it polishes
The brake disc handled well is clamped in special tooling on lathe, brake disc working face is carried out with 600 mesh sand paper
Polishing makes work surface roughness reach Ra=1.6 μm, stops machine, dismantles brake disc.
The high-strength magnesium alloy that the embodiment uses, density 1.8g/cm3Left and right, is only a quarter of gray iron density,
For substituting traditional cast iron material preparation brake disc so that brake disc weight substantially reduces, and reduces vehicle energy consumption.In addition magnesium closes
Golden specific heat capacity is much larger than gray iron, and thermal conductivity is also more much bigger than gray iron, and heat dissipation performance is good, is braked when continuous brake can be greatly reduced
The temperature of disk effectively reduces brake system probability of failure, improves vehicle safety performance.Simultaneously because high temperature sintering is experienced, because
The wearing layer formed on this brake disc disk body is in metallurgical binding with disk body metal, and bond strength is very high, is formed by wearing layer tool
There are very high hardness and chemical stability.Therefore the brake disc prepared by the present invention has good wear-resisting, corrosion resistance, keeps away
Exempt from that cast iron brake disk is easy to wear, easy the shortcomings that getting rusty, the rotating technique field of all kinds of vehicles can be applied to.
Embodiment 4
The structure of aluminium alloy brake drum is same as Example 2, and tooling can also refer to shown in Fig. 2.Unlike tooling, this reality
It applies and does not use Silicone Case 6 in example 4 so that the surface of entire brake drum all processes, this is conducive to improve the resistance to of brake drum
Corrosion.
The formation of wearing layer is roughly the same with embodiment 3 on brake drum, except that right using one illustrated embodiment 4 of table
The technical parameter answered, obtained wearing layer also as shown in one embodiment of table, 4 corresponding data, repeat no more.
The aluminium alloy trade mark is 7A04 in the specific embodiment of the invention, and the magnesium alloy trade mark is MB25, or Qi Tagao
Intensity Al alloys andMg alloys, and the present invention can also use cast aluminium alloy gold, as long as intensity is met the requirements.
Claims (10)
1. a kind of wear-resisting brake disc, the preparation method of brake drum, include the following steps：
Process brake disc, brake drum：Using high-strength aluminum alloy or magnesium alloy as base material, pressed after carrying out blank forging or casting
Brake disc or braking drum shape needed for vehicle are machined into according to drawing；
Brake disc or brake drum are lifted, conducting wire is used in combination to be electrically connected at brake disc or braking drum basal body；
Configure solution：Select Na2SiO3·5H2O、Na2B4O7、KF、CON2H4、C6H15NO3, KOH as solute, select deionization
For water as solvent, the configuration concentration of each solute is Na2SiO3·5H2O 8-15g/L、Na2B4O7 0.5-15g/L、KF 0.5-
15g/L、CON2H4 0.5-5g/L、C6H15NO3The solution of 0.5-20g/l, KOH 0.5-3g/L, configuration are placed in conductive metal slot
Interior, the configuration amount of solution needs being capable of the obtained brake disc of immersion step one or drum；
Wearing layer is formed in brake disc or brake drum surface：The brake disc lifted or brake drum are specifically put into the molten of configuration
Liquid level or less is immersed in liquid；Use power supply for frequency 100-500Hz, the asymmetric Bipolar pulse power of duty ratio 50%,
And the anode in the wire power connection source of brake disc or brake drum will be connected, the stainless steel in brake disc or brake drum hanging apparatus is cloudy
Pole connects the cathode of power supply；It controls solution temperature and is in 20-40 DEG C, startup power supply simultaneously uses Isobarically Control, keeps forward current close
Degree is in 2-10A/dm2, when forward voltage rises to 400-420V, start Slow loading negative voltage, make negative current density
In 1-6A/dm2, then maintain positive negative sense current density constant, when forward voltage rises to 520-580V, deenergization takes
Go out brake disc or brake drum and cleans up；It it is 40-60 μm in the film thickness for the wearing layer that brake disc or brake drum surface are formed；
Sanding and polishing is carried out to get to the brake disc of light wear-resistant, brake drum to brake disc or brake drum working surface.
2. wear-resisting brake disc according to claim 1, the preparation method of brake drum, which is characterized in that the brake disc (1)
Hanging apparatus include lifting plate (3) that longitudinal section is inverted U, top is lifting portion (31), and both ends are to rolled at lower openings
Curve the interconnecting piece (32) being connect with brake disc, the lifting portion (31) is upward through the mounting hole (11) of brake disc and protrudes,
For lifting, the interconnecting piece (32) is tightly attached to the lower surface of non-working surface in the middle part of brake disc；Divide except two working face of brake disc
Other parallel interval is arranged one piece of stainless steel cathode (5), and in the middle part of stainless steel cathode (5) with adjacent brake disc non-working surface it
Between accompany nylon cross-over block (4) so that minimum range between stainless steel cathode (5) and brake disc (1) is not less than 10mm, and
Distance phase between the A working faces of brake disc peripheral upper surface and the B working faces of lower surface and respective adjacent stainless steel cathode (5)
Deng；Each nylon bolt (2) passes through two pieces of stainless steel cathodes (5), two pieces of nylon cross-over blocks (4), interconnecting piece (32) and braking
Disk, and the interconnecting piece for lifting plate (3) is pressed on to surface and the fixation of brake disc (1)；Stainless steel cathode (5) electric connection of power supply is negative
Pole.
3. wear-resisting brake disc according to claim 1, the preparation method of brake drum, which is characterized in that the brake drum (7)
Hanging apparatus include longitudinal section be trapezoidal or inverted U aluminium alloy lift plate (3), top be lifting portion (31), lower openings
Place both ends are bent into the interconnecting piece (32) being connect with brake drum outward, and the lifting portion (31) is upward through the mounting hole of brake drum
(71) it protrudes, for lifting, the interconnecting piece (32) is tightly attached to the lower surface of non-working surface in the middle part of brake drum；Brake drum it is interior
One columnar stainless steel cathode (5), stainless steel cathode (5) outer surface and brake drum (7) inner surface are set in cylindrical surface
Between distance it is uniform, and minimum range >=10mm；Nylon cross-over block (4) is equipped with below interconnecting piece (32), nylon bolt (2) is worn
Stainless steel cathode (5), nylon cross-over block (4), interconnecting piece (32) and brake drum are crossed, and the interconnecting piece and system of plate (3) will be lifted
Dynamic drum (7) is fixed；Stainless steel cathode (5) electric connection of power supply cathode.
4. wear-resisting brake disc according to claim 3, the preparation method of brake drum, which is characterized in that the brake drum (7)
Outer surface be inactive face, be closely arranged a Silicone Case (6).
5. wear-resisting brake disc according to claim 1, the preparation method of brake drum, which is characterized in that in the step 3
The configuration concentration of each solute is 10g/l Na2SiO3·5H2O、8g/l Na2B4O7、2g/l KF、3g/l CON2H4、5g/l
C6H15NO3、2g/l KOH。
6. wear-resisting brake disc according to claim 1, the preparation method of brake drum, which is characterized in that in the step 4
Preferred parameter is：It controls solution temperature and is in 25-35 DEG C, setting supply frequency is kept in 100-200Hz, duty ratio 50%
Forward current density is in 5-6A/dm2, when forward voltage rises to 400-410V, start Slow loading negative voltage, make negative sense
Current density is in 3-4A/dm2, then maintain positive negative sense current density constant.
7. wear-resisting brake disc according to claim 1, the preparation method of brake drum, which is characterized in that when using aluminium alloy
It is wear-resisting between the thickness for the wearing layer that brake disc or brake drum surface are formed is in 40-50 μm when processing brake disc or brake drum
The main component of layer is crystalline alpha-Al2O3With crystalline state γ-Al2O3, the microhardness of brake disc or brake drum surface reaches Hv1500
More than.
8. wear-resisting brake disc according to claim 1, the preparation method of brake drum, which is characterized in that when using magnesium alloy
When processing brake disc disk body, between the wear-resisting thickness layer by layer that brake disc disc surfaces are formed is in 50-60 μm, it is wear-resisting layer by layer
Main component is crystalline state MgO, spinelle and forsterite, and the microhardness of brake disc surface reaches Hv1000 or more.
9. wear-resisting brake disc according to claim 1, the preparation method of brake drum, which is characterized in that step 5 is specially：
Surface is formed into the brake disc of wearing layer or brake drum is clamped on lathe, its working face is carried out with the sand paper of 400-800 mesh
Sanding and polishing makes work surface roughness reach Ra=1.6 μm.
10. a kind of brake disc or brake drum, which is characterized in that be made using any one of claim 1-9 the methods.
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