CN106505391B - A kind of material being used to prepare passenger car start and stop carbon brush used for electric engine - Google Patents
A kind of material being used to prepare passenger car start and stop carbon brush used for electric engine Download PDFInfo
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- CN106505391B CN106505391B CN201510564267.8A CN201510564267A CN106505391B CN 106505391 B CN106505391 B CN 106505391B CN 201510564267 A CN201510564267 A CN 201510564267A CN 106505391 B CN106505391 B CN 106505391B
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Abstract
The present invention provides a kind of materials for being used to prepare passenger car start and stop carbon brush used for electric engine, including high copper feed powder and low copper containing amount feed powder；The high copper feed powder includes colloid powder, copper powder and the molybdenum disulfide that weight is 42-47: 51-53: 2-5；The low copper containing amount feed powder includes colloid powder, copper powder and the molybdenum disulfide that weight is 71-75: 20-28: 1-5；Wherein, the colloid powder includes graphite, phenolic resin, tungsten disulfide, petroleum coke and acetone；Wherein, for being added separately in mold, repressed and calcination process prepares carbon brush finished product for the high copper feed powder and low copper containing amount feed powder.The present invention by by the high copper bed of material and the low copper containing amount bed of material it is compound after compacting so that preparation passenger car start and stop carbon brush used for electric engine service life greatly improve.
Description
Technical field
The present invention relates to a kind of materials for being used to prepare passenger car start and stop carbon brush used for electric engine, belong to electrical carbon field.
Background technique
Passenger car is to be mainly used for carrying passenger and its personal luggage or temporary items in its design and technical characteristic
Automobile covers car, microbus and the light bus no more than nine.With people 's material life level raising and
For automobile in the universal of modern society, people are also higher and higher to the various requirement of passenger car.Have in automotive interior various
Motor facilitates operation of the user to each system of car.
When passenger car start stop system is temporary parking (such as equal red lights) in vehicle travel process, auto extinguishing,
When needing to move on, it is restarted automatically the set of system of engine.When restarting engine, starter (start and stop electricity is needed
Machine) it reworks.Due to needing often such frequent starting, for start and stop carbon brush used for electric engine, loss is very big, makes to it
It is needed with the requirement in service life longer than conventional carbon brush for electric machine.The service life of conventional motor carbon brush is 3.5 ten thousand times, start and stop motor
It is 250,000 times or more with the service life of carbon brush.
Requirement the present invention is based on start and stop carbon brush for electric machine to service life is made every effort to increase its wearability, increases service life.
For carbon brush body using the compacting of two kinds of components, one kind is the high copper bed of material, and one kind is the low copper containing amount bed of material, two layers it is compound after reach
The purpose for increasing lubrication, reducing friction, improving service life.
Summary of the invention
The present invention provides one kind and is used to prepare and multiply to overcome the shortcomings of in existing passenger car start and stop carbon brush used for electric engine technology
With the material of vehicle start and stop carbon brush used for electric engine, the present invention is by making the compound rear compacting of the high copper bed of material and the low copper containing amount bed of material
The carbon brush service life that must be prepared greatly improves.
The present invention provides a kind of material for being used to prepare passenger car start and stop carbon brush used for electric engine, including high copper feed powder and
Low copper containing amount feed powder；
The high copper feed powder includes colloid powder, copper powder and the curing that weight is 42-47:51-53:2-5
Molybdenum；
The low copper containing amount feed powder includes colloid powder, copper powder and the curing that weight is 71-75:20-28:1-5
Molybdenum；
Wherein, the colloid powder includes graphite, phenolic resin, tungsten disulfide, petroleum coke and acetone；
Wherein, the high copper feed powder and low copper containing amount feed powder be for being added separately in mold, it is repressed and
Calcination process prepares carbon brush finished product.
Wherein, the colloid powder is prepared via a method which:
Graphite, phenolic resin, tungsten disulfide and petroleum coke are uniformly mixed, colloid powder initial material is made；
Acetone is added in the colloid powder initial material and is uniformly mixed, colloid powder mixture is made；
The colloid powder mixture is dried, be crushed and sieving processing, the colloid powder is made.
In particular, the graphite, phenolic resin, tungsten disulfide, petroleum coke and acetone weight be 74-78:15-
20:2-5:1-5:25-35, the sum of the graphite, parts by weight of phenolic resin, tungsten disulfide and petroleum coke are 100 parts.
Especially, the graphite is hexagonal crystal system, and shape is in layer structure, has good high temperature resistant, conduction like fish scale
And lubricating action.Heretofore described graphite is black natural graphite powder, and suitable stone is added in carbon brush in carbon content >=99%
The wearability of product can be improved in ink.
In particular, in the graphite granularity≤44.5 μm graphite powder accounting < 15%, granularity is 75-150 μm of graphite
Powder accounting 40-80%.
Especially, the phenolic resin be yellow powder, be thermosetting phenolic resin, 75 μm of granularity <；Phenolic resin warp
It is carbonized after high-temperature process, the mechanical strength of product can be improved.
In particular, the tungsten disulfide be black powder, content >=99%, 30 μm of granularity <；The friction system of tungsten disulfide
Number is low, and the wearability of product can be improved.
Especially, the petroleum coke be black powder, carbon content >=99%, 150 μm of granularity <；Petroleum coke is done in carbon brush
As grinding agent, it may assist in commutator face and form uniform protective film, improve the wearability of product.
In particular, the acetone is colourless transparent liquid, solvent use is mainly done.
Especially, time graphite, phenolic resin, tungsten disulfide and petroleum coke being uniformly mixed is 10-20min.
In particular, it is 60 ± 10min that acetone is added to the time being uniformly mixed in the colloid powder initial material.
Especially, the temperature for carrying out drying and processing to the colloid powder mixture is 50-55 DEG C, time 10-12hh.
In particular, carrying out break process, colloid Powder Particle Size composition obtained to the colloid powder after drying are as follows:
45 μm of < of granularity accounting: < 15%；100 μm -- 300 μm of granularity accounting: 60--80%；The granularity that 420 μm of >
Accounting: < 5%.
Wherein, the weight of colloid powder, copper powder and molybdenum disulfide is 42-47:51- in the high copper feed powder
53:2-5。
In particular, the copper content of the copper powder is >=99.5%, granularity is 44.5 μm of <, and pine dress is than being 0.5-1.0g/
cm3。
Especially, the molybdenum disulfide is grey powder, 44.5 μm of content > 98.5%, granularity <；Molybdenum disulfide rubs
It is low to wipe coefficient, the wearability of product can be improved.
In particular, the colloid powder, copper powder and molybdenum disulfide are uniformly mixed, the time that high copper feed powder is made is
40-60min。
Wherein, the weight of colloid powder, copper powder and molybdenum disulfide is 71-75:20- in the low copper containing amount feed powder
28:1-5。
In particular, the copper content of the copper powder is >=99.5%, granularity is 44.5 μm of <, and pine dress is than being 0.5-1.0g/
cm3。
Especially, the molybdenum disulfide is grey powder, 44.5 μm of content > 98.5%, granularity <；Molybdenum disulfide rubs
It is low to wipe coefficient, the wearability of product can be improved.
In particular, the colloid powder, copper powder and molybdenum disulfide are uniformly mixed, the time that low copper containing amount feed powder is made is
30-40min。
Wherein, the high copper feed powder and low copper containing amount feed powder are added separately in compacting tool set include:
After the high copper feed powder and low copper containing amount feed powder are added separately in compacting tool set, then copper soft whipping wire inserted
Enter wherein.
In particular, the high copper feed powder and low copper containing amount feed powder are added separately in compacting tool set include:
First the high copper feed powder is put into the mold；
The low copper containing amount feed powder is put on the high copper feed powder in the mold again；
Then, copper soft whipping wire is inserted within the high copper feed powder via the low copper containing amount feed powder in the mold.
Especially, the high copper feed powder layer is the 60-70% of total mixture thickness；The low copper containing amount feed powder layer is
The 30-40% of total mixture thickness；The plug wire depth of the copper soft whipping wire is the 1/2-2/3 of total thickness of feed layer in the mold.
In particular, the high copper feed powder and low copper containing amount feed powder are added separately in compacting tool set include:
First the low copper containing amount feed powder is put into the mold；
The high copper feed powder is put on the low copper containing amount feed powder in the mold again；
Then, copper soft whipping wire is inserted within the high copper feed powder.
Especially, the high copper feed powder layer is the 60-70% of total mixture thickness；The low copper containing amount feed powder layer is
The 30-40% of total mixture thickness；The plug wire depth of the copper soft whipping wire is the 1/2-2/3 of total thickness of feed layer in the mold.
Advantages of the present invention and advantageous effects are as follows:
1, the present invention is used to prepare the material of passenger car start and stop carbon brush used for electric engine using double layer material structure, and two layers contains
Amount of copper is different, and low copper containing layer coefficient of friction is low, and greasy property is good, and wearability is good, and the service life of carbon brush, Gao Hantong can be improved
Layer resistivity is low, conducts electricity very well, and improves the high conductivity of carbon brush, the excellent passenger car start and stop motor of two layers of compound processability
Use carbon brush.
2, suitable stone is added when preparing colloid powder in the material that the present invention is used to prepare passenger car start and stop carbon brush used for electric engine
Oil coke is conducive to form uniform lubricating film on the surface of engine commutator, by the self-lubricating function of lubricating film, can be improved
The service life of carbon brush.
3, the passenger car start and stop carbon brush used for electric engine function admirable prepared using material of the present invention, bulk density 3.15-
3.30g/cm3, resistivity is 0.40-0.60 μ Ω .m, Rockwell hardness (HR10/392) 85-110, and service life is up to 25-28 ten thousand
It is secondary, carbon brush grind it is small, power decline be no more than 10%.
Specific embodiment
Invention is illustrated with reference to embodiments.The advantages and features of the present invention will be with description and it is more clear
Chu.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.Those skilled in the art should
Understand, without departing from the spirit and scope of the invention can details to technical solution of the present invention and form modify
Or replacement, but these modifications and replacement are fallen within the protection scope of the present invention.
Embodiment 1
1, colloid powder is prepared
It is graphite powder 78 according to weight, phenol-formaldehyde resin powder 15, tungsten disulfide 2, petroleum coke 5, acetone 35 is ready to
Then graphite, phenolic resin, tungsten disulfide and petroleum coke are mixed 10min by raw material at normal temperature, obtain colloid powder initial material；So
Acetone is added in colloid powder initial material afterwards and mixes 70min, is uniformly mixed, colloid powder mixture is made；Finally colloid powder is mixed
Expect 50-55 DEG C at a temperature of drying 12h after, through break process, colloid powder is made.
1, high copper feed powder is prepared
It is colloid powder 42 according to weight, copper powder 53, molybdenum disulfide 5 gets out raw material, then by colloid powder, copper powder
60min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and high copper feed powder is made.
2, low copper containing amount feed powder is prepared
It is colloid powder 71 according to weight, copper powder 28, molybdenum disulfide 1 gets out raw material, then by colloid powder, copper powder
30min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and low copper containing amount feed powder is made.
3, compression process
First high copper feed powder is put into the mold；High copper material low copper containing amount feed powder being put into again in mold
On powder；Then, within by copper soft whipping wire via the low copper containing amount feed powder insertion high copper feed powder in mold；Wherein, Gao Han
Amount of copper feed powder layer is the 70% of total mixture thickness；Low copper containing amount feed powder layer is the 30% of total mixture thickness；Copper soft whipping wire
Plug wire depth is 2/3 of total thickness of feed layer in the mold.Compression process is carried out to the mixture in mold using press device,
Carbon brush green compact is made, wherein the 3 tons/cm of unit pressure of compression process2。
5, sintering and finished product working process
The carbon brush green compact suppressed is placed with high temperature sintering furnace, is sintered place to it under nitrogen and hydrogen shield
Reason；Wherein, the ratio of nitrogen and hydrogen is 70%:25%；Sintering process conditions are as follows: by temperature rise in high temperature sintering furnace in 15h
To 800 DEG C, up to carbon brush first product after being cooled to room temperature；Finished product working process is carried out to carbon brush first product, carbon brush finished product is made.
Physical performance index detection is carried out to carbon brush finished product, testing result is shown in Table 1.
Performance test is carried out to carbon brush finished product according to following test conditions and test method, detection carbon brush finished product uses the longevity
Life and wear rate, test result are shown in Table 2.
Operating voltage: 12V；The method of operation: work 1.5s, rest 28.5s；Experimental condition: air-cooled, motor surface temperature is not
More than 50 DEG C.
Embodiment 2
1, colloid powder is prepared
It is graphite powder 76 according to weight, phenol-formaldehyde resin powder 18, tungsten disulfide 3, petroleum coke 3, acetone 30 is ready to
Then graphite, phenolic resin, tungsten disulfide and petroleum coke are mixed 15min by raw material at normal temperature, obtain colloid powder initial material；So
Acetone is added in colloid powder initial material afterwards and mixes 60min, is uniformly mixed, colloid powder mixture is made；Finally colloid powder is mixed
Expect 50-55 DEG C at a temperature of drying 11h after, through break process, colloid powder is made.
2, high copper feed powder is prepared
It is colloid powder 45 according to weight, copper powder 52, molybdenum disulfide 3 gets out raw material, then by colloid powder, copper powder
50min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and high copper feed powder is made.
3, low copper containing amount feed powder is prepared
It is colloid powder 73 according to weight, copper powder 25, molybdenum disulfide 2 gets out raw material, then by colloid powder, copper powder
35min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and low copper containing amount feed powder is made.
4, compression process
First high copper feed powder is put into the mold；High copper material low copper containing amount feed powder being put into again in mold
On powder；Then, within by copper soft whipping wire via the low copper containing amount feed powder insertion high copper feed powder in mold；Wherein, Gao Han
Amount of copper feed powder layer is the 65% of total mixture thickness；Low copper containing amount feed powder layer is the 35% of total mixture thickness；Copper soft whipping wire
Plug wire depth is 3/5 of total thickness of feed layer in the mold.Compression process is carried out to the mixture in mold using press device,
Carbon brush green compact is made, wherein the 3.5 tons/cm of unit pressure of compression process2。
5, sintering and finished product working process
The carbon brush green compact suppressed is placed with high temperature sintering furnace, is sintered place to it under nitrogen and hydrogen shield
Reason；Wherein, the ratio of nitrogen and hydrogen is 70%:25%；Sintering process conditions are as follows: by temperature rise in high temperature sintering furnace in 12h
To 700 DEG C, up to carbon brush first product after being cooled to room temperature；Finished product working process is carried out to carbon brush first product, carbon brush finished product is made.
Physical performance index detection is carried out to carbon brush finished product, testing result is shown in Table 1.
Performance test is carried out to carbon brush finished product according to following test conditions and test method, detection carbon brush finished product uses the longevity
Life and wear rate, test result are shown in Table 2.
Operating voltage: 12V；The method of operation: work 1.5s, rest 28.5s；Experimental condition: air-cooled, motor surface temperature is not
More than 50 DEG C.
Embodiment 3
1, colloid powder is prepared
It is graphite powder 74 according to weight, phenol-formaldehyde resin powder 20, tungsten disulfide 5, petroleum coke 1, acetone 25 is ready to
Then graphite, phenolic resin, tungsten disulfide and petroleum coke are mixed 20min by raw material at normal temperature, obtain colloid powder initial material；So
Acetone is added in colloid powder initial material afterwards and mixes 50min, is uniformly mixed, colloid powder mixture is made；Finally colloid powder is mixed
Expect 50-55 DEG C at a temperature of drying 10h after, through break process, colloid powder is made.
2, high copper feed powder is prepared
It is colloid powder 47 according to weight, copper powder 51, molybdenum disulfide 2 gets out raw material, then by colloid powder, copper powder
40min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and high copper feed powder is made.
3, low copper containing amount feed powder is prepared
It is colloid powder 75 according to weight, copper powder 20, molybdenum disulfide 5 gets out raw material, then by colloid powder, copper powder
40min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and low copper containing amount feed powder is made.
4, compression process
First low copper containing amount feed powder is put into the mold；Low copper containing amount material high copper feed powder being put into again in mold
On powder；Then, copper soft whipping wire is inserted within high copper feed powder；Wherein, high copper feed powder layer is total mixture thickness
60%；Low copper containing amount feed powder layer is the 40% of total mixture thickness；The plug wire depth of copper soft whipping wire is total material in the mold
The 1/2 of thickness degree.Compression process is carried out to the mixture in mold using press device, carbon brush green compact is made, wherein at compacting
4 tons/the cm of unit pressure of reason2。
5, sintering and finished product working process
The carbon brush green compact suppressed is placed with high temperature sintering furnace, is sintered place to it under nitrogen and hydrogen shield
Reason；Wherein, the ratio of nitrogen and hydrogen is 70%:25%；Sintering process conditions are as follows: by temperature rise in high temperature sintering furnace in 8.5h
To 500 DEG C, up to carbon brush first product after being cooled to room temperature；Finished product working process is carried out to carbon brush first product, carbon brush finished product is made.
Physical performance index detection is carried out to carbon brush finished product, testing result is shown in Table 1.
Performance test is carried out to carbon brush finished product according to following test conditions and test method, detection carbon brush finished product uses the longevity
Life and wear rate, test result are shown in Table 2.
Operating voltage: 12V；The method of operation: work 1.5s, rest 28.5s；Experimental condition: air-cooled, motor surface temperature is not
More than 50 DEG C.
Reference examples 1
1, colloid powder is prepared
It is graphite powder 80 according to weight, phenol-formaldehyde resin powder 20, acetone 30 gets out raw material, then by graphite, phenol
Urea formaldehyde mixes 40min at normal temperature, obtains colloid powder initial material；Then acetone is added in colloid powder initial material and mixes 30min, mixed
It closes uniformly, colloid powder mixture is made；Finally by colloid powder mixture 50-55 DEG C at a temperature of drying 12h after, through broken place
Colloid powder is made in reason.
2, high copper feed powder is prepared
It is colloid powder 45 according to weight, copper powder 52, molybdenum disulfide 3 gets out raw material, then by colloid powder, copper powder
60min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and high copper feed powder is made.
3, low copper containing amount feed powder is prepared
It is colloid powder 72 according to weight, copper powder 25, molybdenum disulfide 3 gets out raw material, then by colloid powder, copper powder
60min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and low copper containing amount feed powder is made.
4, compression process
First low copper containing amount feed powder is put into the mold；Low copper containing amount material high copper feed powder being put into again in mold
On powder；Then, copper soft whipping wire is inserted within high copper feed powder；Wherein, high copper feed powder layer is total mixture thickness
65%；Low copper containing amount feed powder layer is the 35% of total mixture thickness；The plug wire depth of copper soft whipping wire is total material in the mold
The 3/5 of thickness degree.Compression process is carried out to the mixture in mold using press device, carbon brush green compact is made, wherein at compacting
3.5 tons/the cm of unit pressure of reason2。
5, sintering and finished product working process
The carbon brush green compact suppressed is placed with high temperature sintering furnace, is sintered place to it under nitrogen and hydrogen shield
Reason；Wherein, the ratio of nitrogen and hydrogen is 70%:25%；Sintering process conditions are as follows: by temperature rise in high temperature sintering furnace in 12h
To 700 DEG C, up to carbon brush first product after being cooled to room temperature；Finished product working process is carried out to carbon brush first product, carbon brush finished product is made.
Physical performance index detection is carried out to carbon brush finished product, testing result is shown in Table 1.
Performance test is carried out to carbon brush finished product according to following test conditions and test method, detection carbon brush finished product uses the longevity
Life and wear rate, test result are shown in Table 2.
Operating voltage: 12V；The method of operation: work 1.5s, rest 28.5s；Experimental condition: air-cooled, motor surface temperature is not
More than 50 DEG C.
Reference examples 2
1, colloid powder is prepared
It is graphite powder 79 according to weight, phenol-formaldehyde resin powder 18, tungsten disulfide 3, acetone 30 gets out raw material, then
Graphite, phenolic resin, tungsten disulfide are mixed into 35min at normal temperature, obtain colloid powder initial material；Then colloid powder is added in acetone
35min is mixed in initial material, is uniformly mixed, and colloid powder mixture is made；Finally by colloid powder mixture 50-55 DEG C at a temperature of
After drying 12h, through break process, colloid powder is made.
2, high copper feed powder is prepared
It is colloid powder 45 according to weight, copper powder 52, molybdenum disulfide 3 gets out raw material, then by colloid powder, copper powder
60min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and high copper feed powder is made.
3, low copper containing amount feed powder is prepared
It is colloid powder 72 according to weight, copper powder 25, molybdenum disulfide 3 gets out raw material, then by colloid powder, copper powder
60min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and low copper containing amount feed powder is made.
4, compression process
First high copper feed powder is put into the mold；High copper material low copper containing amount feed powder being put into again in mold
On powder；Then, within by copper soft whipping wire via the low copper containing amount feed powder insertion high copper feed powder in mold；Wherein, Gao Han
Amount of copper feed powder layer is the 65% of total mixture thickness；Low copper containing amount feed powder layer is the 35% of total mixture thickness；Copper soft whipping wire
Plug wire depth is 3/5 of total thickness of feed layer in the mold.Compression process is carried out to the mixture in mold using press device,
Carbon brush green compact is made, wherein the 3.5 tons/cm of unit pressure of compression process2。
5, sintering and finished product working process
The carbon brush green compact suppressed is placed with high temperature sintering furnace, is sintered place to it under nitrogen and hydrogen shield
Reason；Wherein, the ratio of nitrogen and hydrogen is 70%:25%；Sintering process conditions are as follows: by temperature rise in high temperature sintering furnace in 15h
To 700 DEG C, up to carbon brush first product after being cooled to room temperature；Finished product working process is carried out to carbon brush first product, carbon brush finished product is made.
Physical performance index detection is carried out to carbon brush finished product, testing result is shown in Table 1.
Performance test is carried out to carbon brush finished product according to following test conditions and test method, detection carbon brush finished product uses the longevity
Life and wear rate, test result are shown in Table 2.
Operating voltage: 12V；The method of operation: work 1.5s, rest 28.5s；Experimental condition: air-cooled, motor surface temperature is not
More than 50 DEG C.
Reference examples 3
1, colloid powder is prepared
It is graphite powder 79 according to weight, phenol-formaldehyde resin powder 18, petroleum coke 3, acetone 30 gets out raw material, then will
Graphite, phenolic resin and petroleum coke mix 30min at normal temperature, obtain colloid powder initial material；Then at the beginning of colloid powder being added in acetone
35min is mixed in material, is uniformly mixed, and colloid powder mixture is made；Finally by colloid powder mixture 50-55 DEG C at a temperature of dry
After dry 12h, through break process, colloid powder is made.
2, high copper feed powder is prepared
It is colloid powder 45 according to weight, copper powder 52, molybdenum disulfide 3 gets out raw material, then by colloid powder, copper powder
60min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and high copper feed powder is made.
3, low copper containing amount feed powder is prepared
It is colloid powder 72 according to weight, copper powder 25, molybdenum disulfide 3 gets out raw material, then by colloid powder, copper powder
60min is mixed at normal temperature with molybdenum disulfide, is uniformly mixed, and low copper containing amount feed powder is made.
4, compression process
First high copper feed powder is put into the mold；High copper material low copper containing amount feed powder being put into again in mold
On powder；Then, within by copper soft whipping wire via the low copper containing amount feed powder insertion high copper feed powder in mold；Wherein, Gao Han
Amount of copper feed powder layer is the 65% of total mixture thickness；Low copper containing amount feed powder layer is the 35% of total mixture thickness；Copper soft whipping wire
Plug wire depth is 3/5 of total thickness of feed layer in the mold.Compression process is carried out to the mixture in mold using press device,
Carbon brush green compact is made, wherein the 3.5 tons/cm of unit pressure of compression process2。
5, sintering and finished product working process
The carbon brush green compact suppressed is placed with high temperature sintering furnace, is sintered place to it under nitrogen and hydrogen shield
Reason；Wherein, the ratio of nitrogen and hydrogen is 70%:25%；Sintering process conditions are as follows: by temperature rise in high temperature sintering furnace in 15h
To 700 DEG C, up to carbon brush first product after being cooled to room temperature；Finished product working process is carried out to carbon brush first product, carbon brush finished product is made.
Physical performance index detection is carried out to carbon brush finished product, testing result is shown in Table 1.
Performance test is carried out to carbon brush finished product according to following test conditions and test method, detection carbon brush finished product uses the longevity
Life and wear rate, test result are shown in Table 2.
Operating voltage: 12V；The method of operation: work 1.5s, rest 28.5s；Experimental condition: air-cooled, motor surface temperature is not
More than 50 DEG C.
1 carbon brush finished product quantitative measurement table of table
2 carbon brush finished product performance test of table tests table
From the data in table 1, it can be seen that passenger car start and stop carbon brush used for electric engine function admirable prepared by the present invention, bulk density are
3.15-3.30g/cm3, resistivity is 0.40-0.60 μ Ω .m, Rockwell hardness (HR10/392) 85-110.
From the data in table 2, it can be seen that reference examples 1 are being prepared in the colloid powder stage that petroleum coke and tungsten disulfide, preparation is not added
Carbon brush service life it is most short, only 140,000 times, the decline of 10 Wan Cihou power is maximum, has dropped 15%；Reference examples 2 are preparing glue
That petroleum coke is not added in the matter powder stage, the carbon brush service life of preparation is shorter, is 180,000 times, 10 Wan Cihou power have dropped
12%；Reference examples 3 are being prepared that tungsten disulfide is not added in the colloid powder stage, and the carbon brush service life of preparation is shorter, are 230,000
Secondary, 10 Wan Cihou power have dropped 11%；Two the method for the present invention joined petroleum coke and curing in the colloid powder stage preparing
Tungsten, the carbon brush long service life of preparation reach 25-28 ten thousand times, carbon brush grind it is small, power decline be no more than 10%.
Claims (6)
1. a kind of material for being used to prepare passenger car start and stop carbon brush used for electric engine, which is characterized in that including high copper feed powder and low
Copper content feed powder；
The high copper feed powder includes colloid powder, copper powder and the molybdenum disulfide that weight is 42-47:51-53:2-5；
The low copper containing amount feed powder includes colloid powder, copper powder and the molybdenum disulfide that weight is 71-75:20-28:1-5；
Wherein, the colloid powder includes graphite, phenolic resin, tungsten disulfide, petroleum coke and acetone；
Wherein, the high copper feed powder and low copper containing amount feed powder are for being added separately in mold, repressed and calcination process
Prepare carbon brush finished product；
Wherein, the weight of the graphite, phenolic resin, tungsten disulfide, petroleum coke and acetone is 74-78:15-20:2-
5:1-5:25-35。
2. material according to claim 1, which is characterized in that the colloid powder is prepared via a method which:
Graphite, phenolic resin, tungsten disulfide and petroleum coke are uniformly mixed, colloid powder initial material is made；
Acetone is added in the colloid powder initial material and is uniformly mixed, colloid powder mixture is made；
The colloid powder mixture is dried, be crushed and sieving processing, the colloid powder is made.
3. material according to claim 1, which is characterized in that distinguish the high copper feed powder and low copper containing amount feed powder
It is added in compacting tool set and includes:
First the high copper feed powder is put into the mold；
The low copper containing amount feed powder is put on the high copper feed powder in the mold again；
Then, copper soft whipping wire is inserted within the high copper feed powder via the low copper containing amount feed powder in the mold.
4. material according to claim 3, which is characterized in that the high copper feed powder is the 60- of total mixture thickness
70%；The low copper containing amount feed powder is the 30-40% of total mixture thickness；The plug wire depth of the copper soft whipping wire is the mold
In total mixture thickness 1/2-2/3.
5. material according to claim 1, which is characterized in that distinguish the high copper feed powder and low copper containing amount feed powder
It is added in compacting tool set and includes:
First the low copper containing amount feed powder is put into the mold；
The high copper feed powder is put on the low copper containing amount feed powder in the mold again；
Then, copper soft whipping wire is inserted within the high copper feed powder.
6. material according to claim 5, which is characterized in that the high copper feed powder is the 60- of total mixture thickness
70%；The low copper containing amount feed powder is the 30-40% of total mixture thickness；The plug wire depth of the copper soft whipping wire is the mold
In total mixture thickness 1/2-2/3.
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| CN108907205B (en) * | 2018-07-03 | 2020-07-28 | 大同新成新材料股份有限公司 | Manufacturing process of composite material electric brush |
| CN108988097A (en) * | 2018-07-03 | 2018-12-11 | 大同新成新材料股份有限公司 | A kind of manufacturing process of Silver Matrix Brush Materials |
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| RU2058639C1 (en) * | 1992-12-28 | 1996-04-20 | Государственный научно-исследовательский институт конструкционных материалов на основе графита | Material for electric brushes and its production process |
| CN101134675A (en) * | 2007-08-07 | 2008-03-05 | 哈尔滨工程大学 | Preparation method of graphite radical composite material |
| CN102130407A (en) * | 2010-12-24 | 2011-07-20 | 苏州东南碳制品有限公司 | Carbon brush for truck starting motor as well as manufacture method and application thereof |
| CN102856758A (en) * | 2012-09-21 | 2013-01-02 | 丽水市长新电器制造有限公司 | Electric brush for ABS system and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2058639C1 (en) * | 1992-12-28 | 1996-04-20 | Государственный научно-исследовательский институт конструкционных материалов на основе графита | Material for electric brushes and its production process |
| CN101134675A (en) * | 2007-08-07 | 2008-03-05 | 哈尔滨工程大学 | Preparation method of graphite radical composite material |
| CN102130407A (en) * | 2010-12-24 | 2011-07-20 | 苏州东南碳制品有限公司 | Carbon brush for truck starting motor as well as manufacture method and application thereof |
| CN102856758A (en) * | 2012-09-21 | 2013-01-02 | 丽水市长新电器制造有限公司 | Electric brush for ABS system and preparation method thereof |
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