CN103256325A - Vibration-damping, denoising and yaw low-speed braking pad and fabrication method thereof - Google Patents
Vibration-damping, denoising and yaw low-speed braking pad and fabrication method thereof Download PDFInfo
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- CN103256325A CN103256325A CN2013102230323A CN201310223032A CN103256325A CN 103256325 A CN103256325 A CN 103256325A CN 2013102230323 A CN2013102230323 A CN 2013102230323A CN 201310223032 A CN201310223032 A CN 201310223032A CN 103256325 A CN103256325 A CN 103256325A
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Abstract
The invention relates to a braking pad, in particular to a vibration-damping, denoising and yaw low-speed braking pad for a yaw braking device of a wind generating set and a fabrication method of the braking pad. The vibration-damping, denoising and yaw low-speed braking pad comprises a steel backing and an abrasive layer attached to the steel backing, wherein the abrasive layer is fabricated by taking PTS (Phenolic Thermospheres) suspension method phenolic resin as a gluing agent, taking graphite, tin sulfide and copper sulfide as a lubricant, taking antimony trisulfide, zirconium silicate, silicon carbide and silicon dioxide as an abradant, taking potassium titanate whiskers, ceramic fibers, aramid fibers, carbon fibers, steel fibers and copper fibers as reinforced fibers, taking calcium carbonate, mica, vermiculite and foam ferrous powder as an inorganic filler, and taking cashew nut shell oil friction powder and rubber powder as an organic filler according to a wet method pressing technology. The braking pad has the advantages that component percentages of a friction material and a processing technology are reasonable; the braking sensitivity is high; the braking vibration is small; the friction noise is low; and the braking pad is provided with a pad abrasion alarm line.
Description
Technical field
The present invention relates to a kind of brake rim, relate in particular to a kind of vibration damping de-noising driftage low speed brake rim for the wind generating set yaw break and preparation method thereof.
Background technique
Brake rim is constituent element important on the off-course brake, normally is made up of metal support plate and the friction material that is fixed on this metal support plate.Described friction material can form by dusty material is added hot pressing, and described dusty material is fibrous material, stuffing and tackiness agent for example.But because the formula constituent of used friction material is different with proportioning, and process parameter is selected different in the course of working, make traditional off-course brake in braking process, directly can produce high vibration and very strong friction noise when brake rim contacts with brake disc.The rubbing surface of traditional braking liner is the plane normally, the time compresses brake disc in braking, causes wherein the carbide abrasive dust of gas and adhesion in time not discharge, and also can produce vibration and friction noise.The used brake rim of off-course brake is an easy-abrasion part, after may wear to a certain degree, need in time to change, to guarantee the braking ability of break, general off-course brake does not have liner wearing and tearing alarming line, need the staff to ascend a height and observe abrasion condition or rule of thumb judge whether to change brake rim, increase staff's labor intensity.
Summary of the invention
The objective of the invention is to solve and exist when using the brake rim that prior art processing off-course brake uses, owing to process parameter in friction material formulation and the production process selects the unreasonable brake vibration that causes violent, the do not wear and tear problem of alarming line of the big and brake rim of friction noise, and provide a kind of friction material component proportioning and processing technology reasonable, the braking sensitivity height, brake vibration is little, vibration damping de-noising driftage low speed brake rim of the low and belt material pad of friction noise wearing and tearing alarming line and preparation method thereof.
The technical solution adopted in the present invention is:
A kind of vibration damping de-noising driftage low speed brake rim, comprise steel backing and the abrasive material that is attached on the steel backing, described abrasive material is formed by the feedstock production of following weight percentage: PTS suspension method phenolic resin 10%～25%, graphite 5%～8%, tin, copper sulphide 3%～6%, antimonous sulfide 2%～5%, zirconium silicate 2%～4%, silicon carbide 2%～6%, silica 3%～5%, crystal whisker of hexa potassium titanate 3%～8%, ceramic fiber 1%～2%, aramid fibre 5%～10%, carbon fiber 2%～3%, Steel Fibre 5%～10%, copper fiber 5%～8%, calcium carbonate 5%～10%, mica 5%～10%, vermiculite 5%～10%, foam ferrous powder 5%～10%, cashew nut shell oil friction powder 5%～10%, rubber powder 5%～10%.
Be carved with at least one groove that becomes 10 °～20 ° of angles with running orbit on the rubbing surface of described abrasive material, described brake rim respectively is provided with a wearing and tearing alarming line at its back side near the symmetrical position at two ends.
The described groove that becomes 10 °～20 ° of angles with running orbit that is engraved on the abrasive material rubbing surface is the parabolic wire casing, and the two ends of groove lay respectively on two sides of abrasive material.
In the front end and back end consistent with running orbit chamfering is arranged on the rubbing surface of described abrasive material.
The described steel backing back side respectively has a through hole near the symmetrical position at two ends.
Described wearing and tearing alarming line one end passes through hole, and its inner wire is embedded in the abrasive material, and the thickness that liner wore away when buried depth was reported to the police for the abrasive material total thickness deducts is left to the steel backing outside after the wearing and tearing alarming line the other end is installed fast plug in advance.
A kind of making method of vibration damping de-noising driftage low speed brake rim is as follows:
Step 1), steel backing is carried out line cutting, surfacing and cure process by drawing, respectively be drilled with a through hole at steel backing near the symmetrical position at two ends, the steel backing cleaning surfaces is clean, place standby;
Step 2), to be 10%～25% PTS suspension method phenolic resin according to shared percetage by weight, 5%～8% graphite, 3%～6% tin, copper sulphide, 2%～5% antimonous sulfide, 2%～4% zirconium silicate, 2%～6% silicon carbide, 3%～5% silica, 3%～8% crystal whisker of hexa potassium titanate, 1%～2% ceramic fiber, 5%～10% aramid fibre, 2%～3% carbon fiber, 5%～10% Steel Fibre, 5%～8% copper fiber, 5%～10% calcium carbonate, 5%～10% mica, 5%～10% vermiculite, 5%～10% foam ferrous powder, 5%～10% cashew nut shell oil friction powder, 5%～10% rubber powder is placed in the batch mixer, stirred 30 minutes, make it abundant mixing, obtain the abrasive material mixture after the making beating;
Step 3), with step 2) in the abrasive material mixture that obtains put in the baking oven, with 50 ℃ temperature prebake, drying time 20 minutes;
Compacting grinding tool in step 4), the cleansing oil press, the steel backing that makes in the step 1) is placed in the grinding tool, steel backing front gluing that will the bonded abrasive lap bed of material, then two through holes of two alarming lines from the steel backing back side are inserted respectively, and expose certain height in the steel backing front, the abrasive material mixture through prebake in the step 3) is placed on the steel backing, the pressure of setting oil hydraulic press is 3Mpa, pressing cycle is 5 minutes, does not heat, and colds pressing to obtain blank;
Step 5), the blank that obtains colding pressing in the step 4) are transferred to temperature and are adjusted into 200 ℃, and pressure is adjusted in the oil hydraulic press of 5Mpa, continue compacting and make it complete moulding, and pressing cycle is 20 minutes;
Step 6), the moulding liner that obtains in the step 5) is taken out in oil hydraulic press, be placed in the baking oven and heat-treat, setting temperature is 210 ℃ during heat treatment, and heat treatment time is 120 minutes;
Step 7), with the pad surfaces after heat treatment polishing, at its running orbit rear and front end chamfering, become the parabolic wire casing of 10 °～20 ° of angles with running orbit in rubbing surface processing;
Step 8), at last steel backing side and the back side are applied the vibrationproof lacquer both the brake rim finished product.
Beneficial effect of the present invention is:
The present invention uses new component prescription processing abrasive material, make brake rim have stable friction factor, the high temperature friction performance is good, friction noise is low, heat fade is little, the advantage that wear rate is low, specifically by the rational allocation oiling agent, lapping paste, the proportioning of reinforcing fiber and filler, with the control of the friction factor of brake rim rubbing surface 0.35～0.38 stablize in the moderate scope, make abrasive material reach rational rates of thermal expansion, porosity and cold, the hot compression amount of deformation is realized (mating material S355 J2G3) low wear rate 0.2～0.4(V)/[10 when 150 ℃ of operating temperatures
7Cm3/ (N.m)], the good result of low noise＜55dB (A), and maximum noise＞130dB (A) before improving, and make prepared brake rim more be applicable to the braking of dawdling of low speed, low temperature, steel mating material.
The present invention has accelerated reaction process by improving processing technology, has improved the porosity of abrasive material, prevents that organic substance produces lubricating film at friction surface under the high temperature, thereby improves stable friction factor.Heat treatment temperature is 210 ℃ during production, and the time is controlled to be 120 minutes, and the lower-molecular substance of product organic component inherence is decomposed or volatilization, thereby brake rim hardness is minimized, obtain well braking surface of contact, improved the braking sensitivity of brake rim, reduced the generation of friction noise; Pass steel backing, respectively bury a wearing and tearing alarming line in inside, abrasive material two ends underground, after may wear to alarming line and burying aspect underground, the wearing and tearing warning circuit of control end will conducting, produces alarm signal, and brake rim is changed in prompting; There is chamfering front end and back end at its running orbit on the rubbing surface of brake rim, can reduce vibration and the rear end corner angle of front end corner angle extruding initiation and tear, falls piece; The fricative gas of brake rim and brake disc and carbide abrasive dust can be discharged by the parabolic wire casing, reduce the adhesion of carbide abrasive dust between brake rim and brake disc surface of contact, reduce friction noise.
Composition characteristic below by analyzing the abrasive material main material illustrates beneficial effect of the present invention:
(1) PTS suspension method phenolic resin, have excellent heat resisting and mechanical property, electrical insulating property and moulding processability are good, decomposition temperature reaches 490 ℃, is that the brake rim that binder is made has advantages such as stable friction factor, the high temperature friction performance is good, noise is low, heat fade is little with this resin.And use pure phenolic resin can cause that brake rim hardness is too high, fragility is big, the heat-resistant limit temperature only is about 250 ℃.
(2) graphite and tin, copper sulphide etc. are as oiling agent, and friction factor and wear rate are optimized in the variation of friction factor in the time of can reducing to brake.
(3) antimonous sulfide, zirconium silicate, silicon carbide, silica etc. are as lapping paste, can increase the friction factor of friction material, the skin covering of the surface that adverse effect is arranged that produces when the ferriferous oxide on the removable mating material and braking, but the lapping paste of high-load can increase the wave properties of friction factor, therefore needs with its adding quantity control in the reasonable scope.
(4) reinforcing fibers such as ceramic fiber, aramid fibre, carbon fiber, Steel Fibre, copper fiber and potassium titanate crystal whisker can effectively improve frictional behaviour.Single fibre-reinforced Properties of Friction Materials is not comprehensive, exist various defectives, and several fiber mixes, and performance can be complementary, and performance mixes effect, the Properties of Friction Materials excellence of preparation.Potassium titanate crystal whisker is attached on aramid fibre, can improve heat resistance and the intensity of friction surface film, and potassium titanate fibre improves stable friction factor, heat resistanceheat resistant decline performance and wearability; The friction factor of copper fiber and Steel Fibre brake rim all reduces along with the increase of Sliding velocity, adds the copper fiber and can make friction material have high and stable friction factor and very low wear rate, the reduction compressibility; Aramid fibre can overcome the heat sensitivity of resin, promotes stable friction factor, reduces wear rate; Carbon fiber makes friction material have the decline of heat resistanceheat resistant preferably performance.
(5) mineral fillers such as calcium carbonate, mica, vermiculite and foam ferrous powder have material impact to mechanical property, physical property and the frictional behaviour of friction material, can regulate the hardness of friction material, improve friction noise and products appearance, reduce cost.Pearl filler can improve the thermostability of friction material, also can improve the heat fade performance of material simultaneously.Mica and vermiculite filler have the plane reticular structure, can both suppress the low frequency friction noise, but at high temperature wear-resisting property are very poor.Foam ferrous powder makes stable friction factor, and is lighter with respect to its proportion of reducing iron powder, and its porous structure is conducive to reduce semimetal friction material goods friction noise in use.
(6) organic fills such as cashew nut shell oil friction powder and rubber powder have excellent viscoelasticity, are used in the brake rim to reach the purpose that reduces noise.
Description of drawings
Fig. 1 is main sight plane structural representation of the present invention.
Fig. 2 looks perspective view for master of the present invention.
Fig. 3 is rear perspective structural representation of the present invention.
Among the figure: 1, steel backing; 2, abrasive material; 3, alarming line; 4, parabolic wire casing.
Embodiment
Step 1), steel backing 1 is carried out line cutting, surfacing and cure process by drawing, respectively be drilled with a through hole at steel backing 1 near the symmetrical position at two ends, steel backing 1 cleaning surfaces is clean, place standby;
Step 2), will seek out various raw materials according to the weight of above-mentioned raw materials, be placed in the batch mixer, stirred 30 minutes, make it abundant mixing, obtain abrasive material 2 mixtures after the making beating;
Step 3), with step 2) in abrasive material 2 mixtures that obtain put in the baking oven, with 50 ℃ temperature prebake, drying time 20 minutes;
Compacting grinding tool in step 4), the cleansing oil press, the steel backing 1 that makes in the step 1) is placed in the grinding tool, steel backing 1 front gluing that will the bonded abrasive lap bed of material 2, then two through holes of two alarming lines 3 from steel backing 1 back side are inserted respectively, and expose certain height in steel backing 1 front, abrasive material 2 mixtures through prebake in the step 3) are placed on the steel backing 1, the pressure of setting oil hydraulic press is 3Mpa, pressing cycle is 5 minutes, does not heat, and colds pressing to obtain blank;
Step 5), the blank that obtains colding pressing in the step 4) are transferred to temperature and are adjusted into 200 ℃, and pressure is adjusted in the oil hydraulic press of 5Mpa, continue compacting and make it complete moulding, and pressing cycle is 20 minutes;
Step 6), the moulding liner that obtains in the step 5) is taken out in oil hydraulic press, be placed in the baking oven and heat-treat, setting temperature is 210 ℃ during heat treatment, and heat treatment time is 120 minutes;
Step 7), with the pad surfaces after heat treatment polishing, at its running orbit rear and front end chamfering, process the parabolic wire casing 4 that becomes 10 °～20 ° of angles with running orbit at rubbing surface;
Step 8), at last steel backing 1 side and the back side are applied the vibrationproof lacquer both the brake rim finished product.
The present invention adopts the wet method pressing process in working process, press temperature control is controlled to be 5Mpa at 200 ℃, pressure.The abrasive material that low-voltage high-temperature suppresses has two obvious advantages: (1), accelerated reaction process, shorten production time; (2), improved the porosity of abrasive material, prevent that organic substance produces lubricating film at friction surface under the high temperature, thereby improve stable friction factor.Heat treatment temperature is 210 ℃ during production, and the time is controlled to be 120 minutes, and the lower-molecular substance of product organic component inherence is decomposed or volatilization, thereby brake rim hardness is minimized, obtain well braking surface of contact, improved the braking sensitivity of brake rim, reduced the generation of friction noise.
Brake rim provided by the invention is provided with two wearing and tearing alarming lines 3, after off-course brake uses a period of time, the abrasive material 2 of brake rim can wear away certain thickness, after may wear to the embedding aspect of alarming line 3, article two, alarming line 3 wires can be exposed to outside the brake rim, and the used brake disc of wind power generating set is to be made of metal, two alarming lines 3 are connected by the metal brake disc, make the wearing and tearing warning circuit conducting of control end, produce alarm signal, brake rim is changed in prompting, thereby guarantees that off-course brake has good braking ability; Respectively process chamfering in the front end and back end consistent with running orbit on the rubbing surface of abrasive material 2, can not only reduce the vibration and the noise that cause because of the extruding of abrasive material 2 front end corner angle, and can avoid causing braking ability to reduce because abrasive material 2 rear end corner angle are torn, fall piece; Be carved with parabolic wire casing 4 on the rubbing surface of brake rim abrasive material 2, angle between parabolic wire casing 4 and the running orbit is controlled in 10 °～20 ° scope, can make the fricative gas of brake rim and brake disc and carbide abrasive dust easier in 4 discharges of parabolic wire casing, reduce the adhesion of carbide abrasive dust between brake rim and brake disc surface of contact, reduce friction noise, angle between parabolic wire casing 4 and the running orbit is less than 10 ° or all can to cause the fricative gas of brake rim and brake disc and carbide abrasive dust to be discharged greater than 20 ° not smooth, and braking and the noise reduction of brake rim produced harmful effect.
Select S355 J2G3 as mating material below, compare under identical working environment with the traditional braking liner.
| The contrast project | Wear rate in the time of 150 ℃ (V)/[10 ?7cm3/(N.m)] | Friction noise dB (A) |
| Brake rim provided by the invention | 0.2～0.4 | ＜55 |
| The traditional braking liner | 0～0.7 | ＞130 |
Embodiment 5, get percetage by weight and be 16% PTS suspension method phenolic resin, 6% graphite, 4% tin, copper sulphide, 2% antimonous sulfide, 4% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 6, get percetage by weight and be 15% PTS suspension method phenolic resin, 6% graphite, 3% tin, copper sulphide, 3% antimonous sulfide, 2% zirconium silicate, 6% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 7, get percetage by weight and be 16% PTS suspension method phenolic resin, 6% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 2% silicon carbide, 5% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 8, get percetage by weight and be 15% PTS suspension method phenolic resin, 5% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 3% silica, 8% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 9, get percetage by weight and be 17% PTS suspension method phenolic resin, 6% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 4% silica, 3% crystal whisker of hexa potassium titanate, 2% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 10, get percetage by weight and be 14% PTS suspension method phenolic resin, 5% graphite, 3% tin, copper sulphide, 2% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 10% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 11, get percetage by weight and be 15% PTS suspension method phenolic resin, 6% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 3% silica, 7% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 12, get percetage by weight and be 15% PTS suspension method phenolic resin, 5% graphite, 3% tin, copper sulphide, 3% antimonous sulfide, 2% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 2% carbon fiber, 10% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 13, get percetage by weight and be 15% PTS suspension method phenolic resin, 5% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 8% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 14, get percetage by weight and be 14% PTS suspension method phenolic resin, 5% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 5% copper fiber, 10% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 15, get percetage by weight and be 15% PTS suspension method phenolic resin, 5% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 5% calcium carbonate, 10% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 16, get percetage by weight and be 14% PTS suspension method phenolic resin, 5% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 5% mica, 10% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 17, get percetage by weight and be 14% PTS suspension method phenolic resin, 5% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 3% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 10% foam ferrous powder, 6% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 18, get percetage by weight and be 14% PTS suspension method phenolic resin, 6% graphite, 4% tin, copper sulphide, 3% antimonous sulfide, 2% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 5% foam ferrous powder, 10% cashew nut shell oil friction powder, 6% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 19, get percetage by weight and be 14% PTS suspension method phenolic resin, 6% graphite, 4% tin, copper sulphide, 2% antimonous sulfide, 3% zirconium silicate, 3% silicon carbide, 4% silica, 5% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 6% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 5% cashew nut shell oil friction powder, 10% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Embodiment 20, get percetage by weight and be 25% PTS suspension method phenolic resin, 5% graphite, 3% tin, copper sulphide, 2% antimonous sulfide, 2% zirconium silicate, 2% silicon carbide, 3% silica, 4% crystal whisker of hexa potassium titanate, 1% ceramic fiber, 5% aramid fibre, 3% carbon fiber, 5% Steel Fibre, 6% copper fiber, 5% calcium carbonate, 7% mica, 5% vermiculite, 6% foam ferrous powder, 6% cashew nut shell oil friction powder, 5% rubber powder.Follow-up concrete making method is consistent with embodiment 1, no longer repeats.
Claims (7)
1. vibration damping de-noising driftage low speed brake rim, comprise steel backing (1) and be attached to abrasive material (2) on the steel backing (1), it is characterized in that described abrasive material (2) is formed by the feedstock production of following weight percentage: PTS suspension method phenolic resin 10%～25%, graphite 5%～8%, tin, copper sulphide 3%～6%, antimonous sulfide 2%～5%, zirconium silicate 2%～4%, silicon carbide 2%～6%, silica 3%～5%, crystal whisker of hexa potassium titanate 3%～8%, ceramic fiber 1%～2%, aramid fibre 5%～10%, carbon fiber 2%～3%, Steel Fibre 5%～10%, copper fiber 5%～8%, calcium carbonate 5%～10%, mica 5%～10%, vermiculite 5%～10%, foam ferrous powder 5%～10%, cashew nut shell oil friction powder 5%～10%, rubber powder 5%～10%.
2. vibration damping de-noising according to claim 1 driftage low speed brake rim, it is characterized in that: be carved with at least one groove that becomes 10 °～20 ° of angles with running orbit on the rubbing surface of described abrasive material (2), described brake rim respectively is provided with a wearing and tearing alarming line (3) at its back side near the symmetrical position at two ends.
3. vibration damping de-noising according to claim 2 driftage low speed brake rim, it is characterized in that: the described groove that becomes 10 °～20 ° of angles with running orbit that is engraved on abrasive material (2) rubbing surface is parabolic wire casing (4), and the two ends of groove lay respectively on two sides of abrasive material (2).
4. vibration damping de-noising driftage low speed brake rim according to claim 1 is characterized in that: in the front end and back end consistent with running orbit chamfering is arranged on the rubbing surface of described abrasive material (2).
5. vibration damping de-noising according to claim 1 driftage low speed brake rim, it is characterized in that: described steel backing (1) back side respectively has a through hole near the symmetrical position at two ends.
6. vibration damping de-noising according to claim 2 driftage low speed brake rim, it is characterized in that: described wearing and tearing alarming line (3) one ends pass through hole, its inner wire is embedded in the abrasive material (2), buried depth is that abrasive material (2) total thickness deducts the thickness that liner wears away when reporting to the police, and is left to steel backing (1) outside in advance after wearing and tearing alarming line (3) the other end is installed fast plug.
7. the making method of vibration damping de-noising driftage low speed brake rim is characterized in that making method is as follows:
Step 1), steel backing (1) is carried out line cutting, surfacing and cure process by drawing, respectively be drilled with a through hole at steel backing (1) near the symmetrical position at two ends, steel backing (1) cleaning surfaces is clean, place standby;
Step 2), to be 10%～25% PTS suspension method phenolic resin according to shared percetage by weight, 5%～8% graphite, 3%～6% tin, copper sulphide, 2%～5% antimonous sulfide, 2%～4% zirconium silicate, 2%～6% silicon carbide, 3%～5% silica, 3%～8% crystal whisker of hexa potassium titanate, 1%～2% ceramic fiber, 5%～10% aramid fibre, 2%～3% carbon fiber, 5%～10% Steel Fibre, 5%～8% copper fiber, 5%～10% calcium carbonate, 5%～10% mica, 5%～10% vermiculite, 5%～10% foam ferrous powder, 5%～10% cashew nut shell oil friction powder, 5%～10% rubber powder is placed in the batch mixer, stirred 30 minutes, make it abundant mixing, obtain abrasive material (2) mixture after the making beating;
Step 3), with step 2) in abrasive material (2) mixture that obtains put in the baking oven, with 50 ℃ temperature prebake, drying time 20 minutes;
Compacting grinding tool in step 4), the cleansing oil press, the steel backing (1) that makes in the step 1) is placed in the grinding tool, steel backing front gluing that will the bonded abrasive lap bed of material (2), then two through holes of two alarming lines (3) from the steel backing back side are inserted respectively, and expose certain height in steel backing (1) front, abrasive material (2) mixture through prebake in the step 3) is placed on the steel backing (1), the pressure of setting oil hydraulic press is 3Mpa, pressing cycle is 5 minutes, do not heat, colding pressing obtains blank;
Step 5), the blank that obtains colding pressing in the step 4) are transferred to temperature and are adjusted into 200 ℃, and pressure is adjusted in the oil hydraulic press of 5Mpa, continue compacting and make it complete moulding, and pressing cycle is 20 minutes;
Step 6), the moulding liner that obtains in the step 5) is taken out in oil hydraulic press, be placed in the baking oven and heat-treat, setting temperature is 210 ℃ during heat treatment, and heat treatment time is 120 minutes;
Step 7), with the pad surfaces after heat treatment polishing, at its running orbit rear and front end chamfering, become the parabolic wire casing (4) of 10 °～20 ° of angles with running orbit in rubbing surface processing;
Step 8), at last steel backing (1) side and the back side are applied the vibrationproof lacquer both the brake rim finished product.
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| CN109555802A (en) * | 2018-11-08 | 2019-04-02 | 北京天仁道和新材料有限公司 | A kind of friction material, wear-resistant coating brake disc prepared therefrom are made pottery brake block and its preparation method and application with organic carbon |
| CN110985573A (en) * | 2019-12-17 | 2020-04-10 | 湘电风能有限公司 | Composite material and method for preparing wind power yaw brake pad |
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