CN101813134A - Method for preparing bearing retainer by using carbon fiber composite material - Google Patents
Method for preparing bearing retainer by using carbon fiber composite material Download PDFInfo
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- CN101813134A CN101813134A CN 201010124760 CN201010124760A CN101813134A CN 101813134 A CN101813134 A CN 101813134A CN 201010124760 CN201010124760 CN 201010124760 CN 201010124760 A CN201010124760 A CN 201010124760A CN 101813134 A CN101813134 A CN 101813134A
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Abstract
The invention relates to a method for preparing a bearing retainer by using a carbon fiber composite material. The method is characterized in that: a bearing retainer is prepared from 10 to 20 percent of carbon fiber, 10 to 20 percent of polytetrafluoroethylene, 10 to 20 percent of graphite, and 40 to 70 percent of poly(ether-ether-ketone) through the processes such as material preparation, raw material pretreatment, mould design, mould temperature, forming temperature, injection pressure, holding pressure and time. The bearing retainer has the advantages of: 1, uniform color, no pore, 38 percent of crystallinity of the materials, and the optimum state of the products; and 2, high hydrolysis resistance, low water absorption, and superhigh performance of chemical attack resistance and radiation resistance. Therefore, the comprehensive performance of the bearing retainer material can be improved, and the continuously-improved requirements of the national high-tech engineering on the bearing are met.
Description
Technical field
The present invention relates to the bearing material field, particularly a kind ofly make retainer with carbon fiber composite.
Background technique
Bearing is the important transmission part of lathe and machinery thereof, is supporting axle and bears the load that transmits of axle.Rolling bearing is made up of outer ring, inner ring, ball and retainer in the bearing.
The effect of inner ring is to match with axle, and rotates together with the axis; Matching with bearing support in the outer ring, plays a supportive role; Retainer can make rolling element evenly distribute, prevent that rolling element from coming off, rotation of guiding rolling element and lubricate: rolling element is to be evenly distributed between inner ring and the outer ring by retainer, and its shape size and quantity directly influence the usability and the life-span of rolling bearing.
Retainer can be divided into pressing cage and solid cage.The advantage of pressing cage is that weight is lighter, and the space that occupies between bearing enclose is little, and lubricant oil enters bearing easily and stays in the retainer; Solid cage is applied to the workplace to retainer requirement of strength height, high speed etc.
Metallic material retainer such as brass, steel, light alloy etc. allow higher speed usually, go back the occasion of other motion of affix outside pure rolling, particularly under the high-acceleration situation, must use this retainer.Take adequate measures, for example oil lubrication provides enough lubricating to guarantee retainer guiding surface and bearing inside.
Nonmetallic material such as entity nylon cages, characteristics are that intensity and elasticity have good binding.Nylon is with there being lubricated steel surface that good sliding capability is arranged, and the retainer smooth surface that contacts with rolling element simultaneously produces very friction, so heating and wearing and tearing in the bearing are low-down.Nylon cages has fabulous roadability under the situation that lacks oiling agent, allow bearing continuation operation a period of time, can very fast generation not rob dead and further damage.Glass fibre strengthens PEEK and is fit to the situations high-speed, that requirement harshnesses such as chemical reaction or high temperature are arranged.The operating temperature range height of PEEK, chemical resistance and wearability height and workability are good.Traditional retainer adopts the sheet metal impact briquetting, because its material is close, cause affinity phenomenon easily, along with nonmetal industrial expansion, people adopt nonmetallic material to make retainer, the use of these materials has solved the problem of the compatibility between the metal retainer same metal, but there is certain problem in aspects such as its wear resistance, hydrolytic resistance and flame retarding, and index such as processibility is not as iron and steel.Therefore, be not suitable for fields such as Aero-Space, military project, electric and medical treatment.
High-speed turbine pump bearing retainer material in the past all adopts the reinforced TFE composite material, and has obtained good effect.But,, also more and more higher to the requirement of bearing accuracy and reliability along with improving constantly of turbine pump bearing rotating speed and load.
Because ultra high speed turbine pump bearing rotating speed changes up to 4～100,000, one 40～150 ℃ of temperature ranges, bearing is immersed in the medium uns-dimethylhydrazine, this medium has corrosivity, and bearing is worked under the oil-free lubrication condition, and material requirements has high strength, low coefficient of friction, high temperature resistant, premium properties such as selflubricating is corrosion-resistant to retainer.
Summary of the invention
For addressing the above problem, the present invention designs a kind of with carbon fiber composite making retainer moulding process, utilizing the retainer material of this moulding process processing is a kind of high strength, wear-resistant, corrosion-resistant and self-lubricating composite, its mechanical strength and impact strength are 3～5 times of the reinforced TFE composite material that adopts of high-speed turbine pump bearing retainer in the past, and greasy property and teflon are suitable, and rub resistance polishing machine and polyimide are suitable.
For achieving the above object, the present invention has adopted following technological scheme:
The described moulding process of making retainer of carbon fiber composite is through prescription, material preparation, pretreatment of raw material, mold design, die temperature, mold temperature, injection pressure, dwell pressure and time eight operations, and each operation division is as follows.
I, prescription
By weight percentage: carbon fiber 10-20%, teflon 10～20%, graphite 10～20%, polyether-ether-ketone 40～70%;
11, material preparation
After mixing, 350～380 ℃ of temperature, extruding pelletization under pressure 1.5～2MPa condition is mixed 10 ~ 15 minutes time in support with polyether-ether-ketone, teflon, carbon fiber and graphite; Wherein: because of carbon fiber and graphite are the powdery light weight, when polyether-ether-ketone and teflon fusing, utilize the mode of argon gas wind in the pipe under the anaerobic state that carbon fiber powder and plumbago are added wherein, stir and make carbon fiber and graphite to be evenly distributed therein with the polyether-ether-ketone, the teflon that melt.
III, pretreatment of raw material
Before raw material uses with above-mentioned extruding pelletization bulk storage in dish, thickness 3mm, place air circulation to protect charging tray, temperature is controlled at carries out drying at 150 ℃ ~ 160 ℃ to material and removes moisture content, determines that material is that moisture is less than at 0.02% o'clock and takes out at once and uses standing time.
IV, mold design
Die cavity and core material should have 52～54 Rockwell hardnesss under compound polyether-ether-ketone processing temperature, the sprue diameter is 4mm at least, and ultrashort good more; For ease of the product demoulding, the sprue gradient is at least 2 °, and combines with Z type, contrary tiltedly type, ring-like cold slug well and sprue sprue base; Runner with circular or trapezoidal be good, and section thickness is bigger, the flow path of melt is short more good more, avoids changing flow direction as far as possible; Except that submerged type or tunnel gate, most of cast gates all are suitable for compound polyether-ether-ketone product; Gate size is big as far as possible, avoids the cross section thin and long, is 1-2mm around mouth diameter and thickness;
V, die temperature
Utilize the strict control of fortune oil type die heater die temperature at 160-180 ℃;
VI, mold temperature
Mold temperature is controlled at 400～420 ℃, the stable and suitable processing of material melt;
VII, injection pressure
Injection pressure is 100 ± 5MPa:
VIII, dwell pressure and time
80 ± 5MPa, 10～20 seconds dwell times.
Because adopt aforesaid technological scheme, the present invention has following superiority:
1, moulding process of the present invention, that develops a kind ofly makes retainer with carbon fiber composite, and color is even, pore-free, the degree of crystallinity of material reaches 38%, has reached the optimum state of product.
What 2, the present invention developed makes retainer with carbon fiber composite, its mechanical strength and ring-type tensile strength are 4 ~ 5 times of reinforced TFE composite material, and greasy property and teflon are suitable, wear-resisting scouring damage performance is suitable with polyimide, friction factor is more lower slightly than reinforced TFE composite material, hydrolytic resistance is strong, and water absorption rate is low, and resistance to chemical attack and radiation resistance are preeminent.Therefore the combination property of bearing holder material is improved, thereby satisfies national high newly built construction improving constantly the bearing requirement.
The concrete real mode of planting
Embodiment 1
1) prescription: carbon fiber 20%, teflon 20%, graphite 20%, polyether-ether-ketone 40%.Determine with the polyether-ether-ketone to be body material, use teflon, carbon fiber, graphite as the compound polyetheretherketonematerials materials friction and wear behavior of material modified raising.
2) material preparation: with polyether-ether-ketone, teflon, carbon fiber and graphite, after mixing, 380 ℃ of temperature, mixing time 10 minutes, extruding pelletization under the pressure 2MPa condition.
3) pretreatment of raw material: the raw material bulk storage is in dish, and thickness 3mm places air circulating oven with dish then, and temperature is controlled at carries out drying at 150 ℃ to material and remove moisture content, determines that material is that moisture is less than at 0.02% o'clock and takes out use at once standing time.
4) mold design: die cavity and core material should have 52 Rockwell hardnesss under mold temperature, the sprue diameter is 6mm, and gate diameter and thickness are 2mm.
5) die temperature; Utilize the strict control of fortune oil type die heater die temperature at 170 ℃.
6) mold temperature: mold temperature is controlled at 400 ℃, and the material melt is stable and suitable processing.
7) injection pressure: employing pressure is 100MPa.
8) dwell pressure and time: the employing dwell pressure is 80MPa, and the dwell time is 15 seconds.
Embodiment 2
1) prescription: carbon fiber 15%, teflon 15%, graphite 10%, polyether-ether-ketone 60%.
2) material preparation: with polyether-ether-ketone, teflon, carbon fiber and graphite, after mixing, 360 ℃ of temperature, mixing time 10 minutes, extruding pelletization under the pressure 1.8MPa condition.
3) pretreatment of raw material: the raw material bulk storage is in dish, and the about 3mm of thickness places air circulation to protect on dish then, and temperature is controlled at carries out drying at 160 ℃ to material and remove moisture content, determines that material standing time is that moisture is less than taking-up in 0.02% o'clock use at once.
4) mold design: die cavity and core material should have 54 Zhi Shi hardness under mold temperature, the sprue diameter is 5mm, and gate diameter and thickness are 2mm.
5) die temperature: utilize the strict control of fortune oil type die heater die temperature at 160 ℃.
6) mold temperature: mold temperature is controlled at 410 ℃.
7) injection pressure: employing pressure is 95MPa.
8) dwell pressure and time: the employing dwell pressure is 80MPa, and the dwell time is 10 seconds.
Embodiment 3
1) prescription: carbon fiber 10%, teflon 10%, graphite 10%, surplus are polyether-ether-ketone 70%.
2) material preparation: with polyether-ether-ketone, teflon, carbon fiber and graphite, after mixing, following extruding pelletization.
3) pretreatment of raw material: the raw material bulk storage is in dish, and the about 3mm of thickness places air circulating oven with dish then, and temperature is controlled at carries out drying at 155 ℃ to material and remove moisture content, determines that material standing time is that moisture is less than taking-up in 0.02% o'clock use at once.
4) mold design: die cavity and core material should have 53 Rockwell hardnesss under mold temperature, the sprue diameter is 8mm, and gate diameter and thickness are 2mm.
5) die temperature: utilize the strict control of fortune oil type die heater die temperature at 180 ℃.
6) mold temperature: mold temperature is controlled at 420 ℃.
7) injection pressure: the employing force value is 100MPa.
8) dwell pressure and time: the employing dwell pressure is 80MPa, and the dwell time is 20 seconds.
Emphasize as follows in sum:
About filling a prescription: carbon fiber accounts for 10～12% of gross weight; Teflon accounts for 10～12% of gross weight; Graphite accounts for 10～12% of gross weight; Surplus is a polyether-ether-ketone.Determine with the polyether-ether-ketone to be body material, improve compound polyetheretherketonematerials materials friction and wear behavior as modification material section with teflon, carbon fiber, graphite.
About material preparation: with polyether-ether-ketone, teflon, carbon fiber and graphite, after mixing, 350～380 ℃ of temperature, 10 ~ 15 minutes time, extruding pelletization under pressure 1.5～2MPa condition.Wherein: because of carbon fiber and graphite are the powdery light weight, when polyether-ether-ketone and teflon fusing, utilize the mode of argon gas wind in the pipe under the anaerobic state that carbon fiber powder and plumbago are added wherein, stir and make carbon fiber and graphite to be evenly distributed therein with the polyether-ether-ketone, the teflon that melt.
About pretreatment of raw material: the raw material bulk storage is in dish, the about 3mm of thickness, then dish is placed air circulating oven, temperature is controlled at carries out drying at 150 ℃ ~ 160 ℃ to material and removes moisture content, determines that material is that moisture is less than at 0.02% o'clock and takes out at once and uses standing time.
About mold design: the compound polyether-ether-ketone product of injection moulding, mold design must reach some standard, and die cavity and core material should have 52～54 Rockwell hardnesss under compound polyether-ether-ketone processing temperature.The sprue diameter is at least 4mm, and short more good more; For ease of the product demoulding, the sprue gradient is at least 2 ° and combine with Z type, contrary tiltedly type, ring-like cold slug well and sprue sprue base.Runner with circular or trapezoidal be good, and section thickness is bigger, the flow path of melt is short more good more, avoids changing flow direction as far as possible.Except that submerged type or tunnel gate, most of cast gates all are suitable for compound polyether-ether-ketone product; Gate size is big as far as possible, avoids the cross section thin and long, and gate diameter or thickness are 1～2mm.
About die temperature: die temperature is a crystalline polymer to the performance and the very big polyether-ether-ketone of apparent mass influence of material inherence, die temperature has certain influence to degree of crystallinity and molding shrinkage, the die temperature height, the degree of crystallinity of material is also high, but molding shrinkage increases to some extent, otherwise die temperature is low, the degree of crystallinity of material is low excessively, the cooling rate of material each several part is inhomogeneous, cause the space occurring after the material injection moulding, cause the irregular colour of moulded products even, dark side or dark angle occur, such profiled member mechanical property and other material behavior will reduce.Suitably improve die temperature and can increase flowability, improve the surface of shaped parts roughness, can also adjust the rate of cooling of material, it is fully lax that slow cooling can make stress obtain, prevent that profiled member from producing defectives such as indenture, the die temperature of therefore controlling well in moulding process is most important.Utilize the strict control of fortune oil type die heater die temperature at 160～180 ℃.
About mold temperature: compound polyetheretherketonematerials materials is to belong to crystalline material, has 343 ℃ of apparent in view fusing points.Therefore mold temperature is controlled at 400～420 ℃, and the material melt is stable and suitable processing.
About injection pressure:, preferably use higher injection pressure for mechanical property and the dimensional accuracy that guarantees material.But too high injection rate is easily brought air into and is produced bubble, makes material warpage occur, phenomenon such as burns, and directly influences the surface quality of profiled member.Adopting the pressure position is 90 ± 5MPa.
About dwell pressure and time: the dwell time should be abundant, otherwise defectives such as depression, pore can occur.The employing dwell pressure is 80 ± 5MPa, and the dwell time is 10～20 seconds.
Claims (9)
1. make retainer with carbon fiber composite, it is characterized in that: carbon fiber 10-20%, teflon 10～20%, graphite 10～20%, polyether-ether-ketone 40～70% are obtained product through material preparation, pretreatment of raw material, mold design, die temperature, mold temperature, injection pressure, dwell pressure and the operation of time.
2. according to claim 1ly make retainer with carbon fiber composite, it is characterized in that: material preparation: after mixing by weight with polyether-ether-ketone, teflon, carbon fiber and graphite, 350～380 ℃ of temperature, extruding pelletization under pressure 1.5～2MPa condition is mixed 10 ~ 15 minutes time in support.
3. according to claim 1 and 2ly make retainer with carbon fiber composite, it is characterized in that: because of carbon fiber and graphite are the powdery light weight, when polyether-ether-ketone and teflon fusing, utilize the mode of argon gas wind in the pipe under the anaerobic state that carbon fiber powder and plumbago are added wherein, stir and make carbon fiber and graphite to be evenly distributed therein with the polyether-ether-ketone, the teflon that melt.
4. according to claim 1ly make retainer with carbon fiber composite, it is characterized in that: pretreatment of raw material: before raw material uses with above-mentioned extruding pelletization bulk storage in dish, thickness 3mm, place air circulation to protect charging tray, temperature is controlled at carries out drying at 150 ℃ ~ 160 ℃ to material and removes moisture content, determines that material is that moisture is less than at 0.02% o'clock and takes out at once and uses standing time.
5. according to claim 1ly make retainer with carbon fiber composite, it is characterized in that: mold design: die cavity and core material should have 52～54 Rockwell hardnesss under compound polyether-ether-ketone processing temperature, the sprue diameter is 4mm at least, and ultrashort good more; For ease of the product demoulding, the sprue gradient is at least 2 °, and combines with Z type, contrary tiltedly type, ring-like cold slug well and sprue sprue base; Runner with circular or trapezoidal be good, and section thickness is bigger, the flow path of melt is short more good more, avoids changing flow direction as far as possible; Except that submerged type or tunnel gate, most of cast gates all are suitable for compound polyether-ether-ketone product; Gate size is big as far as possible, avoids the cross section thin and long, is 1-2mm around mouth diameter and thickness.
6. according to claim 1ly make retainer, it is characterized in that: die temperature: utilize the strict control of fortune oil type die heater die temperature at 160-180 ℃ with carbon fiber composite.
7. according to claim 1ly make retainer with carbon fiber composite, it is characterized in that: mold temperature: mold temperature is controlled at 400～420 ℃, the stable and suitable processing of material melt.
8. according to claim 1ly make retainer with carbon fiber composite, it is characterized in that: injection pressure: injection pressure is 100 ± 5MPa.
9. according to claim 1ly make retainer, it is characterized in that: dwell pressure and time: dwell pressure 80 ± 5MPa, 10～20 seconds dwell times with carbon fiber composite.
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| CN 201010124760 CN101813134A (en) | 2010-03-16 | 2010-03-16 | Method for preparing bearing retainer by using carbon fiber composite material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091784A (en) * | 2010-12-22 | 2011-06-15 | 中国兵器工业第五二研究所 | Manufacturing method of self-lubricating bimetallic bearing |
| CN102330741A (en) * | 2011-07-18 | 2012-01-25 | 栾清杨 | High-intensity carbon fiber composite bearing |
| CN102441933A (en) * | 2011-09-29 | 2012-05-09 | 洛阳轴研科技股份有限公司 | Method for manufacturing bearing holding rack by lubricating and modifying carbon/carbon compound material |
| CN103013090A (en) * | 2011-09-21 | 2013-04-03 | 重庆信合塑胶有限公司 | Polyaryletherketone composite material and application of the same in bridge bearing |
| CN105585840A (en) * | 2014-11-14 | 2016-05-18 | 中国科学院金属研究所 | Nylon composite material bearing retainer and preparation method thereof |
| CN105643863A (en) * | 2014-11-14 | 2016-06-08 | 中国科学院金属研究所 | Injection-molding preparation method for plastic angular contact ball bearing retainer and special mold for injection-molding preparation method |
| CN105802126A (en) * | 2016-05-11 | 2016-07-27 | 南京京锦元科技实业有限公司 | Carbon fiber reinforced polyether-ether-ketone resin composite material |
| CN109467877A (en) * | 2018-10-25 | 2019-03-15 | 宜宾天原集团股份有限公司 | A kind of preparation method of polyether-ether-ketone oilless bearing retainer |
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| CN101186096A (en) * | 2007-11-30 | 2008-05-28 | 洛阳轴研科技股份有限公司 | Technique for molding ultrahigh speed turbine pump bearing holder material |
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| CN1168780C (en) * | 2002-08-30 | 2004-09-29 | 中国科学院兰州化学物理研究所 | Laminated composite material of polyether ether ketone for strengthening textile of carbon fiber or graphiet fiber |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091784A (en) * | 2010-12-22 | 2011-06-15 | 中国兵器工业第五二研究所 | Manufacturing method of self-lubricating bimetallic bearing |
| CN102091784B (en) * | 2010-12-22 | 2013-03-20 | 中国兵器工业第五二研究所 | Manufacturing method of self-lubricating bimetallic bearing |
| CN102330741A (en) * | 2011-07-18 | 2012-01-25 | 栾清杨 | High-intensity carbon fiber composite bearing |
| CN103013090A (en) * | 2011-09-21 | 2013-04-03 | 重庆信合塑胶有限公司 | Polyaryletherketone composite material and application of the same in bridge bearing |
| CN102441933A (en) * | 2011-09-29 | 2012-05-09 | 洛阳轴研科技股份有限公司 | Method for manufacturing bearing holding rack by lubricating and modifying carbon/carbon compound material |
| CN102441933B (en) * | 2011-09-29 | 2013-08-28 | 洛阳轴研科技股份有限公司 | Method for manufacturing bearing holding rack by lubricating and modifying carbon/carbon compound material |
| CN105585840A (en) * | 2014-11-14 | 2016-05-18 | 中国科学院金属研究所 | Nylon composite material bearing retainer and preparation method thereof |
| CN105643863A (en) * | 2014-11-14 | 2016-06-08 | 中国科学院金属研究所 | Injection-molding preparation method for plastic angular contact ball bearing retainer and special mold for injection-molding preparation method |
| CN105802126A (en) * | 2016-05-11 | 2016-07-27 | 南京京锦元科技实业有限公司 | Carbon fiber reinforced polyether-ether-ketone resin composite material |
| CN109467877A (en) * | 2018-10-25 | 2019-03-15 | 宜宾天原集团股份有限公司 | A kind of preparation method of polyether-ether-ketone oilless bearing retainer |
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Application publication date: 20100825 |