CN103537681A - Powder metallurgy high temperature resistant bearing material and manufacturing method thereof - Google Patents
Powder metallurgy high temperature resistant bearing material and manufacturing method thereof Download PDFInfo
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- CN103537681A CN103537681A CN201310472220.XA CN201310472220A CN103537681A CN 103537681 A CN103537681 A CN 103537681A CN 201310472220 A CN201310472220 A CN 201310472220A CN 103537681 A CN103537681 A CN 103537681A
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Abstract
The invention discloses a powder metallurgy high temperature resistant bearing material. The powder metallurgy high temperature resistant bearing material is characterized by being manufactured from, by weight, 4.2-4.4 parts of Cu, 1.2-1.3 parts of Mo, 3.2-3.3 parts of Co, 1-2 parts of molybdenum disulfide, 0.2-0.3 part of calcium fluoride, 0.6-0.8 part of B, 2.7-2.9 parts of Zn, 0.1-0.3 part of GeO2, 1.2-1.4 parts of sodium stearate, 0.3-0.4 part of TiC, 0.1-0.3 part of CaCO3, 90-92 parts of stainless steel powder and 1-2 parts of auxiliaries. The raw materials of a manufacturing method of the powder metallurgy high temperature resistant bearing material are easy to obtain and low in cost, the powder metallurgy high temperature resistant bearing material is simple in manufacturing process, parameters are easy to control, and the manufacturing method is safe and environmentally friendly in the production process and particularly suitable for industrial production on a large scale. By adjusting and optimizing alloy components, the high temperature resistant bearing material with high-strength hard enhancing phases and evenly-scattered lubricating and abrasion reducing phases firmly combined is formed. A sliding bearing manufactured with the method can be widely applied to heavy mechanical equipment of steel, metallurgy, energy and the like, and is particularly suitable for occasions requiring oil-free lubrication.
Description
Technical field
The present invention relates to field of powder metallurgy, particularly high temperature resistant bearing material of a kind of powder metallurgy and preparation method thereof.
Background technology
Powder metallurgy be produce metal dust or with metal dust (or mixture of metal dust and non-metal powder) as raw material, through being shaped and sintering, produce the industrial technology of metal material, composite and all kinds goods.At present, PM technique has been widely used in the fields such as traffic, machinery, electronics, Aero-Space, weapons, biology, new forms of energy, information and nuclear industry, becomes one of branch of tool development vitality in new material science.That PM technique possesses is significantly energy-conservation, economize material, excellent performance, Product Precision is high and the series of advantages such as good stability, is very suitable for producing in enormous quantities.In addition, part material and the also available PM technique manufacture of complex parts that with conventional cast method and machining process, cannot prepare, thereby enjoy the attention of industrial quarters.Powder metallurgy structural part product material composition is not limited by melting, both can add alloying component, can add other structural constituent yet, and adjusts as requested in sizable scope, and then can reach the effect of mating with steel part in mechanical property.
Powder metallurgy mechanization degree is high, can reduce personnel, can raise the efficiency again, so that cost-saving.PM technique can replace traditional manufacturing process, for the vast traditional forms of enterprises cost-saving.
So study the formula of the powder metallurgy of various components of machine, adapt to different needs, have great importance.
Summary of the invention
The object of this invention is to provide high temperature resistant bearing material of a kind of powder metallurgy and preparation method thereof, can overcome the problem of existing bearing material high-temperature wearable scarce capacity.
In order to realize object of the present invention, the present invention passes through following scheme implementation:
A high temperature resistant bearing material, is made by the raw material of following weight portion: Cu4.2-4.4, Mo1.2-1.3, Co3.2-3.3, molybdenum bisuphide 1-2, calcirm-fluoride 0.2-0.3, B0.6-0.8, zinc 2.7-2.9, GeO
20.1-0.3, odium stearate 1.2-1.4, TiC0.3-0.4, CaCO
30.1-0.3, powder of stainless steel 90-92, auxiliary agent 1-2;
Described auxiliary agent is made by the raw material of following weight portion: iron powder 3-4, zinc oxide 1-2, isopropyl distearyl acyl-oxygen base Aluminate 1-2, kaolin 2-3, polyvinyl alcohol 2-3, carbon fiber 1-2, ferrous sulfate 2-3, sodium phosphate trimer 1-2, mica powder 3-4, crosslinking agent TAIC1-2, zinc stearate 1-2.Preparation method mixes iron powder, zinc oxide, ferrous sulfate, sodium phosphate trimer, mica powder, grind to form 200-300 order powder, then add isopropyl distearyl acyl-oxygen base Aluminate to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other residual components, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
Powder metallurgy of the present invention is high temperature resistant bearing material, by following concrete steps, made:
(1) by Cu, Mo, Co, zinc, GeO
2,powder of stainless steel mixes, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 8-10Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 650-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other residual components is mixed;
(3) at 55-65 ℃, after mixing and stirring 60-90 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering furnace, with 6-8 ℃/min of speed, is warming up to sintering 2-3 hour under 800-850 ℃ of condition; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1050-1150 ℃ of condition; To be cooled to 320-340 ℃ with 8-10 ℃/min of speed again, be incubated after 2-3 hour, in air, slow cooling is to room temperature again.
The raw material of the inventive method is easy to get, cheap, preparation technology is simple, parameter is easily controlled, production process safety and environmental protection is particularly suitable for large-scale industrial production.By adjustment and the optimization of alloy constituent element, formed the high temperature resistant bearing material with high-intensity hard wild phase and finely dispersed lubricated anti-attrition phase strong bonded.The sliding bearing of preparing by the inventive method can be widely used in, in the heavy-duty machinery equipments such as iron and steel, metallurgy, the energy, being particularly suitable for requiring the occasion of oil-free lubrication.
Specific embodiments
Below by instantiation, the present invention is described in detail.
A high temperature resistant bearing material, by following weight portion (kilogram) raw material make: Cu4.2, Mo1.2, Co3.2, molybdenum bisuphide 1, calcirm-fluoride 0.2, B0.6, zinc 2.7, GeO
20.1, odium stearate 1.2, TiC0.3, CaCO
30.1, powder of stainless steel 90, auxiliary agent 1;
Described auxiliary agent by following weight portion (kilogram) raw material make: iron powder 4, zinc oxide 2, isopropyl distearyl acyl-oxygen base Aluminate 1, kaolin 3, polyvinyl alcohol 3, carbon fiber 1, ferrous sulfate 3, sodium phosphate trimer 1, mica powder 3, crosslinking agent TAIC2, zinc stearate 1.Preparation method mixes iron powder, zinc oxide, ferrous sulfate, sodium phosphate trimer, mica powder, grind to form 200-300 order powder, then add isopropyl distearyl acyl-oxygen base Aluminate to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other residual components, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.Powder metallurgy of the present invention is high temperature resistant bearing material, by following concrete steps, made:
(1) by Cu, Mo, Co, zinc, GeO
2,powder of stainless steel mixes, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 8-10Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 650-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other residual components is mixed;
(3) at 55-65 ℃, after mixing and stirring 60-90 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering furnace, with 6-8 ℃/min of speed, is warming up to sintering 2-3 hour under 800-850 ℃ of condition; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1050-1150 ℃ of condition; To be cooled to 320-340 ℃ with 8-10 ℃/min of speed again, be incubated after 2-3 hour, in air, slow cooling is to room temperature again.
Through detection, the hardness of milk high-temperature bearing of the present invention: HRC57; Tensile strength: 1180MPa.
Claims (2)
1. the high temperature resistant bearing material of powder metallurgy, is characterized in that, by the raw material of following weight portion, is made: Cu4.2-4.4, Mo1.2-1.3, Co3.2-3.3, molybdenum bisuphide 1-2, calcirm-fluoride 0.2-0.3, B0.6-0.8, zinc 2.7-2.9, GeO
20.1-0.3, odium stearate 1.2-1.4, TiC0.3-0.4, CaCO
30.1-0.3, powder of stainless steel 90-92, auxiliary agent 1-2;
Described auxiliary agent is made by the raw material of following weight portion: iron powder 3-4, zinc oxide 1-2, isopropyl distearyl acyl-oxygen base Aluminate 1-2, kaolin 2-3, polyvinyl alcohol 2-3, carbon fiber 1-2, ferrous sulfate 2-3, sodium phosphate trimer 1-2, mica powder 3-4, crosslinking agent TAIC1-2, zinc stearate 1-2; Preparation method mixes iron powder, zinc oxide, ferrous sulfate, sodium phosphate trimer, mica powder, grind to form 200-300 order powder, then add isopropyl distearyl acyl-oxygen base Aluminate to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other residual components, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
2. the high temperature resistant bearing material of powder metallurgy according to claim 1, is characterized in that, by following concrete steps, is made:
(1) by Cu, Mo, Co, zinc, GeO
2,powder of stainless steel mixes, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 8-10Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 650-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other residual components is mixed;
(3) at 55-65 ℃, after mixing and stirring 60-90 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering furnace, with 6-8 ℃/min of speed, is warming up to sintering 2-3 hour under 800-850 ℃ of condition; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1050-1150 ℃ of condition; To be cooled to 320-340 ℃ with 8-10 ℃/min of speed again, be incubated after 2-3 hour, in air, slow cooling is to room temperature again.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044111A (en) * | 2017-12-26 | 2018-05-18 | 苏州贝尔纳德铁路设备有限公司 | A kind of preparation method of hydraulic tamping machine stent |
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| CN1759200A (en) * | 2003-03-10 | 2006-04-12 | 三菱麻铁里亚尔株式会社 | Iron base sintered alloy excellent in machinability |
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| CN102015163A (en) * | 2005-01-10 | 2011-04-13 | H.C.施塔克股份有限公司 | Metallic powder mixtures |
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Application publication date: 20140129 |