CN104399970B - A kind of iron-based powder metallurgy friction material and preparation method thereof - Google Patents
A kind of iron-based powder metallurgy friction material and preparation method thereof Download PDFInfo
- Publication number
- CN104399970B CN104399970B CN201410704348.9A CN201410704348A CN104399970B CN 104399970 B CN104399970 B CN 104399970B CN 201410704348 A CN201410704348 A CN 201410704348A CN 104399970 B CN104399970 B CN 104399970B
- Authority
- CN
- China
- Prior art keywords
- powder
- iron
- friction
- friction material
- copper
- 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
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
A kind of iron-based powder metallurgy friction material and preparation method thereof, the described iron-based powder metallurgy friction material present invention is made up of iron powder, copper powder, manganese powder, graphite powder, carborundum powder, molybdenum disulphide powder, silicon dioxide powder, aluminium oxide powder and blanc fixe powder, the system matches effects such as ferroalloy matrix, lubricant component, solid friction constituent element are played, provide one and there is good mechanical strength, in low speed, wide pressure limit, use high-performance powder metallurgy iron-based friction material.The coefficient of friction ＞ 0.32 of the present invention, wear extent≤0.0005mm/ face time.
Description
Technical field
The present invention relates to Material Field, specifically a kind of iron-based powder metallurgy friction material and preparation method thereof.
Background technology
Certain carrier wing flap protection device brake assemblage belongs to attrition component, and originally the friction material of its static friction sheet uses U.S.
State C94500 high lead tin bronze based material, but this material belongs to external limit and purchases material, is difficult to buy, domestic does not grasp core
Technology, and along with the condition of use is increased the weight of by the later stage, its friction and wear behavior aspect occurs in that some defect.As:
Under the conditions of low speed, high specific pressure use, material abrasion is relatively big, and coefficient of friction is relatively low.
Domestic existing iron-based powder metallurgy friction material CN200710106016.0 is mainly used in middle and high speed, middle than pressure
The braking of aircraft, engineering truck and cannon.CN200720153895.8 is mainly used in certain type crawler-mounted excavator clutch
In device, invention is structure and the production procedure of a kind of friction plate, does not comprise iron-based powder metallurgy friction material formula
And preparation technology.Patent CN200710160660.6 discloses a kind of combination for preparing ferrous based powder metallurgical friction
Thing and friction material, it is mainly composed of ferrum, copper, manganese, carborundum, silicon dioxide, aluminium sesquioxide, carbonization
Boron, ferrous sulfate and graphite, it is characterised in that described component content is ferrum 55-70%, copper 5-20%, manganese 0.3-1.4%,
Carborundum 3-10%, silicon dioxide 5-15%, aluminium sesquioxide 0.9-1.8%, boron carbide 2-5%, ferrous sulfate 5-15%,
Graphite 5-10%.Obtaining wear extent on MM-1000 type friction wear testing machine is between 0.006-0.0094, but also
Be not used for, operating condition of test condition illustrates.
Summary of the invention
For overcoming present in prior art under the conditions of low speed, high specific pressure use, material abrasion is relatively big, coefficient of friction
Relatively low deficiency, the present invention proposes a kind of iron-based powder metallurgy friction material and preparation method thereof.
The present invention by 61～the graphite powder of the manganese powder of the copper powder of the iron powder of 73.5%, 6～12%, 2～5%, 8～14%, 2～
Three oxygen of the silicon dioxide powder of the molybdenum disulphide powder of carborundum powder, 2.0～4.0%, 2.0～4.0%, 2.0～5.0% of 6%
Change two aluminium powders and 2～6% blanc fixe powder composition, described percentage ratio is mass percent.
Described iron powder is FHY200, content >=98% of ferrum,；Described copper powder is FTD1, content >=99.8% of copper；Institute
Stating manganese powder is-100～+300 mesh DJMnD, content >=99.7% of manganese；Described graphite powder is+80 mesh flakeys, should
Content >=99.99% of carbon in graphite powder；Described silicon dioxide powder is-100～+200 mesh, and aluminium oxide powder is
The calcining α type of-100～+250 mesh；Described carborundum powder is-120 mesh green silicon carbides, and content is SiC >=98%；
Described blanc fixe is powder, content BaSO4>=98%.
The detailed process preparing described iron-based powder metallurgy friction material that the present invention proposes is:
Step 1, raw material disposal: described raw material disposal includes iron powder and the reduction of copper powder, ball milling, drying and mistake
Sieve, specifically:
Iron powder and the reduction of copper powder: iron powder and copper powder are respectively placed in reduction furnace, carried out also under hydrogen atmosphere is protected
Former, to eliminate the oxygen content in described iron powder and copper powder and processing hardening phenomenon；Reduction temperature: iron powder is 600～700
DEG C, copper powder is 350～450 DEG C, and temperature retention time is 2～3 hours；Reduced iron powder after being reduced and copper powder；
Ball milling: the qualified iron powder of reduction and copper powder are respectively put into ball milling 0.5～1h in ball mill；
Dry: graphite powder, molybdenum disulphide powder, silicon dioxide powder, blanc fixe and carborundum powder are respectively put into baking oven
In, under the conditions of 120 DEG C～150 DEG C, it is incubated 2.5～3.0h, to remove the moisture in described each powder；
Sieve: the silicon dioxide powder of drying, aluminium oxide powder and carborundum powder are sieved respectively, takes-100～+200
Mesh silicon dioxide powder, takes-100～+250 mesh aluminium oxide powders, takes-120 mesh carborundum powders；
Step 2, dispensing, batch mixing:
Weigh above-mentioned treated raw material in proportion；First the iron powder of weighing, copper powder and manganese powder are put in batch mixer
Mixing 10～12h, by mixed iron powder, copper powder and manganese powder and load weighted blanc fixe, silicon dioxide powder, three
Al 2 O powder, carborundum powder are put into magazine together with molybdenum disulphide powder and stir, and form premix；Obtain
Premix adds miscella manual stirring uniformly after, load batch mixer and continue mixing 3～5h；Add graphite powder
Mixing 7h, obtains compound；Batch mixer rotating speed is 40～45 revs/min；
Described miscella is the machine oil by 1:1 and gasoline mixes, and per kilogram premix adds described in 10ml
Miscella.
Step 3, compacting:
Design according to product requires to weigh above-mentioned compound, pours in mould and strikes off, and uses conventional method at hydraulic pressure
Cold moudling on machine, obtaining density is 5.2～5.6g/cm3The pressed compact of iron-based powder metallurgy friction material；Described cold pressing
In molding, the pressure that iron-based powder metallurgy friction material pressed compact unit are is born is 400～600MPa；
Step 4, sintering:
It is assembled into assembly by fixing with the steel back of the body of friction material for the iron-based powder metallurgy friction material pressed compact obtained；Will
Separate with graphite bolster plate between each assembly, repeat to stack；Assembly loading pressurized sintering furnace after stacking is carried out
Sintering；Described pressurized sintering furnace it is warming up under logical hydrogen atmosphere 1010～1050 DEG C and is incubated 3.0～4.5h, adding
It is depressed into 20～25kg/cm2And pressurize；After terminating, after furnace cooling to 900 DEG C；Water cooling is unloaded to less than 60 DEG C
Pressure, comes out of the stove, obtains iron-based powder metallurgy friction material.
Owing to taking technique scheme, make the invention have the characteristics that:
1, the present invention is grouped into by the various one-tenth of scientific design material, played ferroalloy matrix, lubricant component,
The system matches effects such as solid friction constituent element, it is provided that one has good mechanical strength, at low speed 1.5m/s, wide pressure
Power scope (6～65Kg/cm2Use in), coefficient of friction ＞ 0.32, the high-performance in wear extent≤0.0005mm/ face time
Powder metallurgy iron base frication material and technology of preparing thereof.
1) matrix constituent element
The hardness of sintered friction material, wearability and thermostability depend greatly on the organizational structure of matrix and rub
Series of physical during scouring damage, chemical change.Owing to ferrum fusing point is high, its intensity, hardness, plasticity, resistance to
Calorific intensity and non-oxidizability can make its alloying be adjusted by various elements, and iron powder compound is prone to compacting and sintering,
Copper powder cost price relatively is cheap, and manufacturing cost is greatly reduced.Add Mn can make ferrum basic asphalt mixture, improve its intensity,
Yield limit and hardness, stablize coefficient of friction, reduces bonding, reduces abrasion etc..It is heat-resisting that addition Cu can improve iron-based body
Degree and non-oxidizability, stablize coefficient of friction.The present invention adds 2～5%Mn powder in iron powder and 6～13%Cu powder are strengthened
Iron-based body.
2) solid lubrication constituent element
The addition of solid lubrication constituent element can be effectively improved the anti-clamping stagnation performance of iron-based friction material, improve wearability.Lubrication
Be used widely in agent is the graphite of layer structure.The effect of graphite first consists in it and is filled with on piece surface
Microcosmic depression, also can absorb produced corona discharge and spark discharge in friction process, reduce the broken of friction surface
Broken, play lubrication and reduce abrasive action.Content of graphite is according to required coefficient of friction and stability, wearability
Select, with this understanding in iron-graphite material content of graphite when 8～about 15%, specific property of material friction degree of stability up to
To about 0.8.It is individually added into kollag and can reduce the impact flexibility of material, when molybdenum disulfide content is 2～6% model
In enclosing, iron-graphite material notched bar impact strength is more than 3Kg m/cm2, take molybdenum bisuphide and graphite conduct in the present invention
Composite solid lubricant constituent element is applied in combination, and on the one hand increases wearability and makes up the defect that high content of graphite causes material to wear and tear,
On the other hand the toughness of material can be improved.
3) friction component
For improving and the frictional behaviour of stabilizing material, friction material needs add solid friction agent.Solid friction agent is not only
Ensure the frictional behavior of material, moreover it is possible to eliminate and shift, from sintered powder material, the metal come on mating plate, thus ensure
Normal break-in with mating plate.Iron-based friction material can be selected for carborundum, silicon dioxide, boron carbide, aluminium sesquioxide
Deng as friction component.The addition of carborundum can improve rapidly material friction coefficient, silicon dioxide and aluminium sesquioxide
Addition can be effectively improved material friction performance, improves coefficient of friction, reduces the abrasion to antithesis.
The impact on this friction material frictional behaviour on solid friction agent silicon dioxide and aluminium sesquioxide content in the present invention
Research and checking are carried out.
In Fig. 1, curve 1 is under sliding speed 1.0 meter per second, dioxide-containing silica from 1% increase to 10% time, iron-based rubs
Wipe material friction coefficient and increase to 0.43 from 0.28；In Fig. 1, curve 2 is under sliding speed 2.0 meter per second, titanium dioxide
Silicone content from 1% increase to 10% time, iron-based friction material coefficient of friction increases to 0.29 from 0.16；In Fig. 1, curve 3 is
Under sliding speed 1.0 meter per second, dioxide-containing silica from 1% increase to 10% time, friction temperature is gradually risen by 120 DEG C
To 180 DEG C.In Fig. 1, curve 4 is under sliding speed 2.0 meter per second, dioxide-containing silica from 1% increase to 4% time,
Friction temperature is increased to rapidly 460 DEG C by 340 DEG C, and when improving dioxide-containing silica to 10% further, friction temperature is slow
It is increased to 480 DEG C.
In Fig. 2, curve 5 is under sliding speed 1.0 meter per second, and along with aluminium sesquioxide content increases, coefficient of friction is
First it is gradually increased and to reduce afterwards.I.e. when aluminium sesquioxide content is 1%, coefficient of friction is 0.29, improves further and contains
When amount is to 3%, coefficient of friction reaches maximum 0.32, continues to improve aluminium sesquioxide content, and coefficient of friction slowly reduces,
During until content increases to 10%, coefficient of friction is reduced to 0.28.
In Fig. 2, curve 6 is under sliding speed 2.0 meter per second, and along with aluminium sesquioxide content increases, coefficient of friction is
First it is gradually increased and tends towards stability afterwards.I.e. when aluminium sesquioxide content is 1%, coefficient of friction is 0.14, improves further
When content is to 4%, coefficient of friction reaches maximum 0.20, continues to increase aluminium sesquioxide content, and coefficient of friction is 0.2
Left and right change.
In Fig. 2, curve 7 is the pass of friction temperature and the aluminium sesquioxide content measured under sliding speed 1.0 meter per second
System.Show that friction temperature gradually rises along with aluminium sesquioxide content increases.I.e. increase from dioxide-containing silica 1%
Time greatly to 10%, friction temperature is gradually increased to 90 DEG C by 30 DEG C.
In Fig. 2, curve 8 is the pass of friction temperature and the aluminium sesquioxide content measured under sliding speed 2.0 meter per second
System.Show along with aluminium sesquioxide content from 1% increase to 10% time, friction temperature is gradually increased to 380 DEG C by 235 DEG C.
In view of sintering loss, Error and Assay and comprehensive friction and wear behavior etc., the present invention uses compound friction constituent element
Guarantee while improving coefficient of friction, to avoid the excessive abrasion of antithesis, reduce friction temperature field to frictional behaviour not
Good impact, improve stable friction factor degree, select solid friction constituent element be carborundum 2～6%, silicon dioxide 2～4%, three
Al 2 O 2～5%.
2, powder metallurgy iron base frication material made in accordance with the present invention, have that intensity is high, density is low, expansion rate is low,
The advantages such as deflection is little, wearability is good.The frictional layer thickness using this powder metallurgy iron base frication material to make is less than
The mating plate composition powder metallurgy iron base frication material that the ultrathin braking component of 0.5mm and 65Mn Steel material are made rubs
Wipe pair, at low speed 1.5m/s, wide pressure limit (6Kg/cm2～65Kg/cm2When using under the conditions of), coefficient of friction reaches
To more than 0.32.In Fig. 3, curve 1 represents the present invention at 1.5m/s, pressure 6Kg/cm2Under the conditions of with braking time survey
Fixed friction coefficient curve, its average friction coefficient is 0.3763.In Fig. 4, curve 4 represents the present invention at 1.5m/s,
Pressure 65Kg/cm2Under the conditions of with braking time measure friction coefficient curve, its average friction coefficient is 0.3381.
3, the mating plate composition friction pair that friction material and 65Mn Steel material are made made in accordance with the present invention, in friction
U.S.'s C94500 high lead tin bronze former material friction pair it is better than in low speed 1.5m/s, wide pressure limit (6 in polishing machine
Kg/cm2、65Kg/cm2Property indices when using under the conditions of).Such as Fig. 3, Fig. 4, Fig. 5, Fig. 6, table 1
Shown in.And friction process not occurring, frictional layer comes off, falls the phenomenons such as block, clamping stagnation, bonding, spark, braking is stable
Reliably, M curve is steady, peak ratio is moderate.
4, the present invention passes through development and the checking of the aspects such as design of material, manufacturing process research and sample contrast test
Deng work, research obtains the iron-based friction material of a kind of novel long-life, instead of U.S. C94500 height slicker solder completely blue or green
Copper based material, at low speed 1.5m/s, wide pressure (6～65Kg/cm2) work under range of condition, meet coefficient of friction ＞
0.32, the high performance requirements in wear extent≤0.0005mm/ face time.
Table 1 iron-based powder of the present invention smelting material and U.S.'s C94500 material property contrast
The present invention compares with patent CN200710106016.0, CN200720153895.8, and detailed gives ferrous alloy powder
End the various raw-material proportioning of metallurgical friction material and all raw material buying, reduction, ball milling, sieve, dispensing, mix
Expect, suppress, process program in the whole production process such as sintering and parameter, and specifically understand this iron-based powder smelting
Gold friction material applies to low speed 1.5m/s, basic, normal, high wide pressure limit (6～65Kg/cm2) operating mode bar
Part, and there is coefficient of friction ＞ 0.32, the excellent fretting wear spy energy in wear extent≤0.0005mm/ face time, and mainly
It is applied to certain carrier wing flap protection device, the domestic application that there is no this type of technology.
It is 2～4% that the present invention compares dioxide-containing silica with patent CN200710160660.6, less than the scope of 5-15%,
Can more effectively protect friction pair the most frayed；Aluminium sesquioxide 2～5%, higher than the scope of 0.9-1.8%, effectively
Compensate for dioxide-containing silica less, the defect that coefficient of friction is relatively low；Manganese powder content is 2～5%, higher than 0.3-1.4%
Scope, improve material matrix intensity, greatly reduce wear extent；Iron-based powder metallurgy friction material of the present invention grinds
Damage amount≤0.0005mm/ face time, performance be far superior to patent CN200710160660.6 at 0.006-0.0094
Between wear extent.
Accompanying drawing explanation
Fig. 1 is that solid friction agent dioxide-containing silica is on iron-based friction material coefficient of friction, the impact of friction temperature.Institute
Stating iron-based friction material is that solid friction agent silicon dioxide changes in the range of 10% containing 10% graphite and 2% barium sulfate.
Material sinters at 1030 DEG C in logical hydrogen medium and forms.Wherein:
Curve 1 is the relation of coefficient of friction and the dioxide-containing silica measured under sliding speed 1.0 meter per second.
Curve 2 is the relation of coefficient of friction and the dioxide-containing silica measured under sliding speed 2.0 meter per second.
Curve 3 is the relation of friction temperature and the dioxide-containing silica measured under sliding speed 2.0 meter per second.
Curve 4 is the relation of friction temperature and the dioxide-containing silica measured under sliding speed 1.0 meter per second.
Fig. 2 is that solid friction agent aluminium sesquioxide content is on iron-based friction material coefficient of friction, the impact of friction temperature.
Described iron-based friction material is containing 10% graphite and 2% barium sulfate, and abrasivus aluminium sesquioxide changes in the range of 10%.
Material sinters at 1030 DEG C in logical hydrogen medium and forms.Wherein:
Curve 5 is the relation of coefficient of friction and the aluminium sesquioxide content measured under sliding speed 1.0 meter per second.
Curve 6 is the relation of coefficient of friction and the aluminium sesquioxide content measured under sliding speed 2.0 meter per second.
Curve 7 is the relation of friction temperature and the aluminium sesquioxide content measured under sliding speed 2.0 meter per second.
Curve 8 is the relation of friction temperature and the aluminium sesquioxide content measured under sliding speed 1.0 meter per second.
Fig. 3 is that the sample made of the iron-based friction material that the present invention obtains is at condition 1 inertia 0.1Kg/cm2, forward pressure
The friction and wear behavior trial curve measured under power 1.05KN, rotating speed 400rpm.Wherein:
Curve 1 is the friction coefficient curve measured with braking time.
Curve 2 is the speed curves measured with braking time.
Positive pressure curve given when curve 3 is brake.
Fig. 4 is that the sample made of the iron-based friction material that the present invention obtains is at condition 2 inertia 0.1Kg/cm2, forward pressure
The friction and wear behavior trial curve measured under power 4.0KN, rotating speed 400rpm.Wherein:
The friction coefficient curve that curve 4 measures with braking time.
Curve 5 is the speed curves measured with braking time.
Positive pressure curve given when curve 6 is brake.
Fig. 5 is that the sample made of former state part is at condition 1 inertia 0.1Kg/cm2, positive pressure 1.05KN, rotating speed 400rpm
The friction and wear behavior trial curve of lower mensuration.Wherein:
The friction coefficient curve that curve 7 measures with braking time.
Curve 8 is the speed curves measured with braking time.
Positive pressure curve given when curve 9 is brake.
Fig. 6 is that the sample made of former state part is at condition 2 inertia 0.1Kg/cm2, positive pressure 4.0KN, rotating speed 400rpm
The friction and wear behavior trial curve of lower mensuration.Wherein:
The friction coefficient curve that curve 10 measures with braking time.
Positive pressure curve given when curve 11 is brake.
Curve 12 is the speed curves measured with braking time.
Fig. 7 makes the flow chart of the present invention.
Detailed description of the invention
The present embodiment is a kind of iron-based powder metallurgy friction material.Described iron-based powder metallurgy friction material by 64% ferrum
Powder, the copper powder of 9%, the manganese powder of 3%, the graphite powder of 10%, the carborundum powder of 3%, the molybdenum disulphide powder of 2%, the two of 4%
The blanc fixe powder composition of silica powder, the aluminium oxide powder of 3% and 2%, described percentage ratio is percent mass
Ratio.Described iron powder is FHY200, Fe >=98%, performs standard GB/T4136-94.Described copper powder is FTD1, Cu >=99.8%,
Execution standard GB/T5246-2007.Described manganese powder is-100～+300 mesh DJMnD, Mn >=99.7%, performs standard
YB/T051-2003.Described graphite powder is+80 mesh flakeys, content C >=99.99%, performs standard
GB/T3518-95.Described silicon dioxide powder is-100～+200 mesh, and aluminium oxide powder is forged for-100～+250 purposes
Burn α type.Described carborundum powder is-120 mesh green silicon carbides, perform standard GB/T2480-96, content be SiC >=
98%.Described molybdenum bisuphide performs standard Q/JDC31-2009.Described blanc fixe is powder, content BaSO4>=98%,
Execution standard GB/T2899-2008.
Embodiment also proposed a kind of method preparing described iron-based powder metallurgy friction material, described iron-based powder smelting
Gold friction material refers to that one is mixed through dispensing with metal and nonmetallic additive by metal base powder, is pressed into tool
There is the blank of some strength, and in less than pressure sintering at a temperature of matrix material fusing point in reducing atmosphere sintering furnace
Make the friction material that between powder, metallurgical binding is formed.
Detailed process is:
Step 1, raw material disposal
(1) iron powder and the reduction of copper powder: iron powder and copper powder are respectively placed in reduction furnace, enters under hydrogen atmosphere is protected
Row reduction, to eliminate the oxygen content in described iron powder and copper powder and processing hardening phenomenon.Reduction temperature: iron powder be 600～
700 DEG C, copper powder is 350～450 DEG C, and temperature retention time is 2～3 hours.Reduced iron powder after being reduced and copper powder.
It is spongy that qualified iron powder should be silver gray, and copper powder is that rose is spongy.
(2) ball milling: the qualified iron powder of reduction and copper powder are respectively put into ball milling 0.5～1h in ball mill.
(3) dry: graphite powder, molybdenum disulphide powder, silicon dioxide powder, blanc fixe and carborundum powder are respectively put into
In baking oven, under the conditions of 120 DEG C～150 DEG C, it is incubated 2.5～3.0h, to remove the moisture in described each powder.
(4) silicon dioxide powder of drying, aluminium oxide powder and carborundum powder are sieved respectively, take-100～+200
Mesh silicon dioxide powder, takes-100～+250 mesh aluminium oxide powders, takes-120 mesh carborundum powders.
The component of each embodiment that the present invention proposes:
| Sequence number | Iron powder | Copper powder | Manganese powder | Graphite | Carborundum | Molybdenum bisuphide | Silicon dioxide | Aluminium sesquioxide | Barium sulfate |
| Embodiment 1 | 62% | 8% | 5% | 8% | 3% | 2% | 4% | 3% | 5% |
| Embodiment 2 | 63% | 13% | 3% | 9% | 2% | 2% | 4% | 2% | 2% |
| Embodiment 3 | 61% | 7% | 4% | 14% | 6% | 2% | 2% | 2% | 2% |
| Embodiment 4 | 67% | 12% | 3% | 5% | 2% | 4% | 3% | 2% | 2% |
| Embodiment 5 | 70% | 6% | 3% | 5% | 2% | 2% | 2% | 2% | 6% |
| Embodiment 6 | 64% | 7% | 2% | 13% | 2% | 3% | 2% | 5% | 2% |
| Embodiment 7 | 63% | 10% | 2% | 10% | 2% | 2% | 3% | 4% | 4% |
| Embodiment 8 | 73.5% | 6% | 2% | 8% | 2% | 2.5% | 2% | 2% | 2% |
Step 2, dispensing, batch mixing
Weigh above-mentioned treated raw material in proportion.First the iron powder of weighing, copper powder and manganese powder are put in batch mixer
Mixing 10～12h, it is achieved after the pre-alloyed process of matrix, with load weighted blanc fixe, silicon dioxide powder, three oxygen
Change two aluminium powders, carborundum powder and put into magazine together with molybdenum disulphide powder, form premix.At the premix obtained
Middle addition miscella manual stirring uniformly after, load batch mixer and continue mixing 3～5h, finally add graphite powder and mix
Close 7h, obtain compound.Batch mixer rotating speed is 40～45 revs/min.
Described miscella is the machine oil by 1:1 and gasoline mixes, and per kilogram premix adds described in 10ml
Miscella.
Step 3, compacting
Design according to product requires to weigh above-mentioned compound, pours in mould, and strikes off with strickle, uses routine
Method is cold moudling on the hydraulic press of 5000KN, and obtaining density is 5.2～5.6g/cm3Ferrous based powder metallurgical friction
The pressed compact of material.In described cold moudling, the pressure that iron-based powder metallurgy friction material pressed compact unit are is born is
400～600MPa.
Step 4, sintering
It is assembled into group by fixing with the steel back of the body adhesive tape of friction material for the iron-based powder metallurgy friction material pressed compact obtained
Piece installing.Separate between each assembly with graphite bolster plate, repeat to stack.Assembly after stacking loads pressure sintering
Stove is sintered.Described pressurized sintering furnace it is warming up under logical hydrogen atmosphere 1030 DEG C and is incubated 3.0～3.5h, adding
It is depressed into 24kg/cm2And pressurize.After terminating, after furnace cooling to 900 DEG C.Water cooling to less than 60 DEG C release,
Come out of the stove, obtain the iron-based powder metallurgy friction material that the present invention proposes.
Each embodiment sintering process parameter that the present invention proposes:
| Sequence number | Sintering temperature | Sintering pressure | Temperature retention time |
| Embodiment 1 | 1030℃ | 24kg/cm2 | 3.5～4.0h |
| Embodiment 2 | 1010℃ | 25kg/cm2 | 3.0～3.5h |
| Embodiment 3 | 1025℃ | 25kg/cm2 | 3.5～4.0h |
| Embodiment 4 | 1035℃ | 22kg/cm2 | 4.0～4.5h |
| Embodiment 5 | 1040℃ | 22kg/cm2 | 3.0～3.5h |
| Embodiment 6 | 1050℃ | 20kg/cm2 | 4.0～4.5h |
| Embodiment 7 | 1030℃ | 24kg/cm2 | 3.5～4.0h |
| Embodiment 8 | 1045℃ | 23kg/cm2 | 4.0～4.5h |
Use the ring-type powder of the layer thickness ＜ 0.5mm that iron-based powder metallurgy friction material is produced in above-described embodiment
Effective friction area of end metallurgical friction material test specimen 1 is 9.26cm2, these ring-type powder metallurgy friction material goods
External diameter is 64mm, and internal diameter is 54mm, and the pressure of forward carrying is 600N, and rotating speed is 420 revs/min；Friction material
Effective friction area of goods 2 is 12.52cm2, the external diameter of these ring-type powder metallurgy friction material goods is 64mm,
Internal diameter is 50mm, and the pressure of forward carrying is 8000N, and rotating speed is 420 revs/min.Above two powder metallurgy rubs
Material product and 65Mn mating plate form friction pair, for certain transporter wing flap protection device, and coefficient of friction ＞ 0.32,
Wear extent ＜ 0.0005mm/ face time.
The present embodiment simulates the working condition of certain transporter, by the effect of the verification experimental verification present invention of sample test specimen.
Testing machine: MCJ-2000
Friction material test specimen 1 sample, specimen size: Φ 75 × Φ 55；Friction material test specimen 2 sample specimen size:
Φ70×Φ62。
Mating material: 65Mn hardness HRC46-51
Experimental condition:
Wherein: J is rotary inertia, N is the rotating speed of testing machine, and F is to act on the gross pressure on test specimen.
Result of the test:
By carrying out friction and wear behavior test on MCJ-2000 testing machine, the iron-based friction material system that the present invention obtains
The sample become is at inertia 0.1Kg/cm2, under the conditions of positive pressure 1.05KN and testing machine rotating speed 400rpm, average friction
Coefficient μ cp is 0.3763, friction material wear extent 0.00043mm/ face time；At inertia 0.1Kg/cm2, forward
Under the conditions of pressure 4.0KN rotating speed 400rpm, average friction coefficient μ cp is 0.3381, friction material wear extent
0.00045mm/ face time.
Claims (3)
1. an iron-based powder metallurgy friction material, it is characterised in that by 61～the copper powder of the iron powder of 73.5%, 6～12%,
2～the molybdenum disulphide powder of the carborundum powder of the graphite powder of the manganese powder of 5%, 8～14%, 2～6%, 2.0～4.0%, 2.0～
The aluminium oxide powder of silicon dioxide powder, 2.0～5.0% of 4.0% and 2～6% blanc fixe powder composition, institute
The percentage ratio stated is mass percent；
Described iron powder is FHY200, content >=98% of ferrum,；Described copper powder is FTD1, content >=99.8% of copper；Described
Manganese powder is-100～+300 mesh DJMnD, content >=99.7% of manganese；Described graphite powder is+80 mesh flakeys, should
Content >=99.99% of carbon in graphite powder；Described silicon dioxide powder is-100～+200 mesh, and aluminium sesquioxide
Powder is the calcining α type of-100～+250 mesh；Described carborundum powder is-120 mesh green silicon carbides, and content is SiC
>=98%；Described blanc fixe is powder, content BaSO4>=98%.
2. the method preparing iron-based powder metallurgy friction material described in claim 1, it is characterised in that detailed process is:
Step 1, raw material disposal: described raw material disposal includes iron powder and the reduction of copper powder, ball milling, dries and sieve,
Specifically:
Iron powder and the reduction of copper powder: iron powder and copper powder are respectively placed in reduction furnace, reduce under hydrogen atmosphere is protected,
To eliminate the oxygen content in described iron powder and copper powder and processing hardening phenomenon；Reduction temperature: iron powder is 600～700
DEG C, copper powder is 350～450 DEG C, and temperature retention time is 2～3 hours；Reduced iron powder after being reduced and copper powder；
Ball milling: the qualified iron powder of reduction and copper powder are respectively put into ball milling 0.5～1h in ball mill；
Dry: graphite powder, molybdenum disulphide powder, silicon dioxide powder, blanc fixe and carborundum powder are respectively put in baking oven,
2.5～3.0h it are incubated, to remove the moisture in described each powder under the conditions of 120 DEG C～150 DEG C；
Sieve: aluminium oxide powder and the silicon dioxide powder of drying, carborundum powder are sieved respectively；Take-100～+250
Mesh aluminium oxide powder, takes-100～+200 mesh silicon dioxide powders, takes-120 mesh carborundum powders；
Step 2, dispensing, batch mixing:
Weigh above-mentioned treated raw material in proportion；First the iron powder of weighing, copper powder and manganese powder are put in batch mixer mixed
Close 10～12h, by mixed iron powder, copper powder and manganese powder and load weighted blanc fixe, silicon dioxide powder, three
Al 2 O powder, carborundum powder are put into magazine together with molybdenum disulphide powder and stir, and form premix；Obtaining
Premix in add miscella manual stirring uniformly after, load batch mixer and continue mixing 3～5h；Add stone
Powdered ink mixing 7h, obtains compound；Batch mixer rotating speed is 40～45 revs/min；
Step 3, compacting:
Design according to product requires to weigh above-mentioned compound, pours in mould and strikes off, and uses conventional method at hydraulic press
Upper cold moudling, obtaining density is 5.2～5.6g/cm3The pressed compact of iron-based powder metallurgy friction material；Described cold
In molded, the pressure that iron-based powder metallurgy friction material pressed compact bears is 400～600MPa；
Step 4, sintering:
It is assembled into assembly by fixing with the steel back of the body of friction material for the iron-based powder metallurgy friction material pressed compact obtained；Will be each
Separate with graphite bolster plate between assembly, repeat to stack；Assembly loading pressurized sintering furnace after stacking is carried out
Sintering；Described pressurized sintering furnace is warming up under logical hydrogen atmosphere 1010～1050 DEG C and is incubated 3.0～4.5h,
It is forced into 20～25kg/cm2And pressurize；After terminating, after furnace cooling to 900 DEG C；Water cooling to 60 DEG C
Following release, comes out of the stove, and obtains iron-based powder metallurgy friction material.
Method the most according to claim 2, it is characterised in that described miscella is the machine oil by 1:1 and gasoline
Mixing, per kilogram premix adds the miscella described in 10ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410704348.9A CN104399970B (en) | 2014-11-26 | 2014-11-26 | A kind of iron-based powder metallurgy friction material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410704348.9A CN104399970B (en) | 2014-11-26 | 2014-11-26 | A kind of iron-based powder metallurgy friction material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104399970A CN104399970A (en) | 2015-03-11 |
| CN104399970B true CN104399970B (en) | 2016-08-24 |
Family
ID=52637672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410704348.9A Active CN104399970B (en) | 2014-11-26 | 2014-11-26 | A kind of iron-based powder metallurgy friction material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104399970B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506346B (en) * | 2015-12-16 | 2020-08-25 | 常州中车铁马科技实业有限公司 | Powder metallurgy brake pad friction material and preparation method thereof |
| CN105778405B (en) * | 2016-03-18 | 2018-07-10 | 华南理工大学 | Automobile-used ferrous based powder metallurgical composite friction material and preparation method thereof |
| CN105838023B (en) * | 2016-03-18 | 2018-02-27 | 华南理工大学 | Automobile-used resin based powder metallurgy composite friction material and preparation method thereof |
| CN105648333A (en) * | 2016-03-31 | 2016-06-08 | 泰安皆瑞金属科技有限公司 | Copper-containing iron-based powder metallurgy material and preparation process thereof |
| CN106084644B (en) * | 2016-06-01 | 2018-07-10 | 华南理工大学 | Automobile-used resin based powder metallurgy potassium titanate fibre friction material and preparation method thereof |
| CN106166610A (en) * | 2016-06-27 | 2016-11-30 | 杭州桑拉科技有限公司 | A kind of high ferro braking metal+ceramic base brake lining friction resistance material and preparation method thereof |
| RU176377U1 (en) * | 2016-07-05 | 2018-01-17 | Общество с ограниченной ответственностью "Информационные технологии" (ООО "ИнфоТех") | FRICTION ELEMENT FOR FRICTION CLUTCH OF ARROW ELECTRIC DRIVE |
| CN106111978B (en) * | 2016-08-18 | 2018-09-25 | 贵州新安航空机械有限责任公司 | A kind of ultralow brake shoe and the preparation method of rubbing of railway freight-car powder metallurgy |
| CN106282815A (en) * | 2016-08-18 | 2017-01-04 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy automobile brake block and preparation method |
| CN107245676B (en) * | 2016-11-21 | 2019-04-16 | 西安航空制动科技有限公司 | High-speed straight-line brake copper based powder metallurgy friction material and preparation method thereof |
| CN107447155A (en) * | 2017-07-12 | 2017-12-08 | 苏州翠南电子科技有限公司 | A kind of iron-based powder metallurgy friction material |
| CN108145103A (en) * | 2017-12-27 | 2018-06-12 | 洛阳神佳窑业有限公司 | Green energy conservation metallurgical material |
| RU181227U1 (en) * | 2018-03-02 | 2018-07-06 | Общество с ограниченной ответственностью "Информационные технологии" (ООО "ИнфоТех") | DISC FRICTION CLUTCH FOR ARROW DRIVE TYPE СП |
| CN109128188A (en) * | 2018-09-15 | 2019-01-04 | 无锡市金珀车业有限公司 | A kind of disc brake piston powder metallurgical processing moulding process |
| CN109261956B (en) * | 2018-11-07 | 2021-02-02 | 山东金麒麟股份有限公司 | Adhesive material, adhesion method and adhesion application and friction block containing adhesive material |
| RU203647U1 (en) * | 2020-07-20 | 2021-04-14 | Евгения Александровна Ершова | CERAMIC FRICTIONAL ELEMENT FOR ELECTRIC DRIVE COUPLING |
| CN112620635A (en) * | 2020-12-09 | 2021-04-09 | 安阳工学院 | Iron-based powder metallurgy friction material and preparation method thereof |
| CN114210971B (en) * | 2021-12-10 | 2024-06-07 | 西安航空制动科技有限公司 | Copper-based powder metallurgy friction material for brake pads of motor train unit and preparation method of copper-based powder metallurgy friction material |
| CN114749657A (en) * | 2022-03-10 | 2022-07-15 | 江苏大学 | Rare earth element Y-reinforced iron-based powder metallurgy friction material and preparation method thereof |
| CN114749658A (en) * | 2022-03-15 | 2022-07-15 | 镇江四联机电科技有限公司 | Preparation method of composite rare earth element reinforced powder metallurgy friction material |
| CN115319078B (en) * | 2022-08-22 | 2024-06-18 | 浙江汉格科技有限公司 | Copper-based powder metallurgy material for high-energy-load braking working condition |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162032A (en) * | 2006-10-13 | 2008-04-16 | 贵州新安航空机械有限责任公司 | Powder metallurgy iron-based high-speed brake pad |
| WO2009019952A1 (en) * | 2007-08-03 | 2009-02-12 | Kabushiki Kaisha Kobe Seiko Sho | Iron-based mixed powder for powder metallurgy and iron powder sinter |
| CN101469261A (en) * | 2007-12-26 | 2009-07-01 | 比亚迪股份有限公司 | Composition for preparing iron based powder metallurgy friction material and friction material |
| CN102294482A (en) * | 2011-06-09 | 2011-12-28 | 西安航空制动科技有限公司 | Iron-copper-based powder alloy brake block and preparation method thereof |
| CN102653670A (en) * | 2011-03-02 | 2012-09-05 | 北京古特莱航空科技发展有限公司 | Metal ceramic friction material and preparation method thereof |
| CN104141087A (en) * | 2014-07-28 | 2014-11-12 | 宁国市开源电力耐磨材料有限公司 | Heat-resisting and wear-resisting iron-based self-lubricating material |
-
2014
- 2014-11-26 CN CN201410704348.9A patent/CN104399970B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162032A (en) * | 2006-10-13 | 2008-04-16 | 贵州新安航空机械有限责任公司 | Powder metallurgy iron-based high-speed brake pad |
| WO2009019952A1 (en) * | 2007-08-03 | 2009-02-12 | Kabushiki Kaisha Kobe Seiko Sho | Iron-based mixed powder for powder metallurgy and iron powder sinter |
| CN101469261A (en) * | 2007-12-26 | 2009-07-01 | 比亚迪股份有限公司 | Composition for preparing iron based powder metallurgy friction material and friction material |
| CN102653670A (en) * | 2011-03-02 | 2012-09-05 | 北京古特莱航空科技发展有限公司 | Metal ceramic friction material and preparation method thereof |
| CN102294482A (en) * | 2011-06-09 | 2011-12-28 | 西安航空制动科技有限公司 | Iron-copper-based powder alloy brake block and preparation method thereof |
| CN104141087A (en) * | 2014-07-28 | 2014-11-12 | 宁国市开源电力耐磨材料有限公司 | Heat-resisting and wear-resisting iron-based self-lubricating material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104399970A (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104399970B (en) | A kind of iron-based powder metallurgy friction material and preparation method thereof | |
| CN107245676B (en) | High-speed straight-line brake copper based powder metallurgy friction material and preparation method thereof | |
| CN101187407B (en) | Dry type asbestos-free friction sheet | |
| CN107382347A (en) | A kind of converter slag-resisting sliding plate brick and preparation method thereof | |
| CN105506346B (en) | Powder metallurgy brake pad friction material and preparation method thereof | |
| CN104846227A (en) | Graphene-reinforced titanium-based composite and preparation method thereof | |
| CN103785824B (en) | Powder metallurgy friction pair for braking of heavy-load vehicle and preparation technology thereof | |
| CN102605209A (en) | Brake pad friction plate manufactured by powder metallurgy and used for high-speed train and preparation process of brake pad friction plate | |
| CN106011520A (en) | Dry copper-base powder metallurgy friction material used for clutch and preparing method of dry copper-base powder metallurgy friction material | |
| CN106702204A (en) | Copper-based powder metallurgy friction material and preparation method thereof | |
| CN105236983A (en) | Method for preparing high-speed train pantograph carbon sliding plate through new process | |
| CN106351993A (en) | Powder metallurgy brake lining for high speed train and preparing method thereof | |
| CN104550902A (en) | Wet-type ferrum-based power metallurgy friction material and preparation method thereof | |
| CN105778405A (en) | Automotive iron-based powder metallurgy composite frictional material and manufacturing method thereof | |
| CN102653670A (en) | Metal ceramic friction material and preparation method thereof | |
| CN108006120A (en) | The ceramic automobile brake block and its production method of a kind of environment-friendly high-efficiency | |
| CN110242691A (en) | A kind of environmentally-friendly friction material and brake block and preparation method based on it | |
| CN110218890B (en) | Preparation method of in-situ growth solid lubricant enhanced nickel-based high-temperature lubricating composite material | |
| CN102329980A (en) | Copper-based powder alloy brake material and preparation method for brake pad | |
| CN101284311A (en) | Sintered copper alloy brake-holder block and preparation method | |
| CN108277379A (en) | A kind of high-strength antifriction unleaded Cu-based sliding bearing material | |
| CN104959608B (en) | A kind of nano silicon carbide granulate copper-base friction plate and preparation method thereof | |
| CN117448623B (en) | Copper-based composite friction material containing modified sepiolite, and preparation method and application thereof | |
| CN101328943A (en) | Motorcycle clutch iron base friction sheet, preparation process and pairing sheet thereof | |
| CN114210966A (en) | Copper-based powder metallurgy friction material with high stable friction coefficient and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |