CN102925808A - High-temperature self-lubricating material for manufacturing bearings and preparation method thereof - Google Patents
High-temperature self-lubricating material for manufacturing bearings and preparation method thereof Download PDFInfo
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- CN102925808A CN102925808A CN2012104434513A CN201210443451A CN102925808A CN 102925808 A CN102925808 A CN 102925808A CN 2012104434513 A CN2012104434513 A CN 2012104434513A CN 201210443451 A CN201210443451 A CN 201210443451A CN 102925808 A CN102925808 A CN 102925808A
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Abstract
The invention discloses a high-temperature self-lubricating material for manufacturing bearings and a preparation method thereof. The high-temperature self-lubricating material comprises, by weight, 1%-5% of barium fluoride, 1%-10% of graphite, 1%-10% of molybdenum disulfide, 10%-20% of copper, 40%-50% of alloy powder and 40%-55% of iron powder. The preparation method includes: (1) alloy raw materials are mixed fully on a V-shaped mixing machine; (2) mixed liquid of water and sodium stearate is added and mixed evenly; (3) drying is performed; (4) the mixture is shaped by pressing of a mould; and (5) sintering is performed. The high-temperature self-lubricating material has the advantages of being low in friction coefficient, strong in agglutination and abrasion resistance, high in bearing capacity, low in energy consumption, small in heating, stable in operation and the like. The novel high-temperature self-lubricating material is used for manufacturing the bearings, cost is reduced, bearing capacity is improved, service life is prolonged, and comprehensive performance is improved remarkably.
Description
Technical field
The present invention relates to powder metallurgical technology, be specifically related to a kind of high temperature self-lubricating composite for the manufacture of bearing and preparation method thereof.
Background technology
The deficiencies such as traditional bearing serious wear, energy consumption is many, the life-span is short, the valuable non-ferrous metal of consumption is many seriously limit the performance of its superiority.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the object of the present invention is to provide a kind of high temperature self-lubricating composite for the manufacture of bearing, overcome the deficiency that traditional bearing exists, make it have good combination property, high-effect, the frictional coefficient of reduction material, the over-all properties of raising material, reduce the material produce cost, prolong the advantages such as life cycle of material.Another object of the present invention provides a kind of preparation method of above-mentioned high temperature self-lubricating composite for the manufacture of bearing
Technical scheme: for achieving the above object, the technical solution used in the present invention is as follows:
A kind of high temperature self-lubricating composite for the manufacture of bearing comprises each component of following weight percent: the molybdenumdisulphide of the barium fluoride of 1%-5%, the graphite of 1%-10%, 1%-10%, the copper of 10%-20%, the alloy powder of 40%-50% and the iron powder of 40%-55%.
Described alloy powder comprises each component of following weight percent: the Fe of 10-20%Cr, 8-12%W, 30-40%Ni and surplus.
A kind of preparation method of the high temperature self-lubricating composite for the manufacture of bearing may further comprise the steps:
(1) gets the barium fluoride that weight percent is 1%-5%, the graphite of 1%-10%, the molybdenumdisulphide of 1%-10%, the copper of 10%-20%, the alloy powder of 40%-50% and the iron powder of 40%-55%, on the V-type mixer, fully mix;
(2) compound is added the mixed solution of entry and sodium stearate and stirring;
(3) mixed raw material is put into baking oven, baking 8-10h;
(4) take out the mould of packing into, control pressure is at 350-450bar, pressurize 20-30s compression moulding;
(5) with pressed compact under 1100-1200 ℃ temperature, logical argon gas carries out sintering, and insulation 1-2h, then be down to room temperature after, through a small amount of following process, can obtain qualified bearing materials.
In the step (1), get 10-20%Cr, 25-32%Fe, 30-40%Ni and 8-12%W.
In the step (2), sodium stearate: batching=3:100; Sodium stearate: water=1:4.
In the step (3), oven temperature is 80-100 ℃.
Fe Ni matrix high temperature alloy has heat treatment performance, the high performance-price ratio of lower cost, uniqueness, has huge potentiality with its iron-based high temp self-lubricating material as the matrix development aspect the friction, wearing and tearing and the lubrication problem that solve dual-use field.The continuous lubrication that has realized from the room temperature to 600-800 ℃ by in iron nickel base alloy, adding solid lubricant.Graphite and molybdenumdisulphide are low-temperature grease in solid lubricant commonly used, silver be in gentle lubrication prescription, barium fluoride is high temperature lubricant.The lubricant optimum combination that these are different can realize the continuous lubrication of material in very wide temperature range.Graphite more than 538 ℃ because abrupt oxidization loses oilness, molybdenumdisulphide namely occur to decompose and loses oilness at about 350 ℃.If chromium is arranged in the body material, the degradation production of molybdenumdisulphide can react with chromium and generate Cr
xS
y(y=x+1).Cr
xS
yBeing hexagonal system, also is a kind of preferably lubricant, and in high temperature generation viscous deformation and lubricate.In iron-based powder, add the metallic elements such as nickel, chromium and guaranteed intensity and the hardness of matrix.Simultaneously, the synergistic effect of graphite and molybdenumdisulphide has obtained lower frictional coefficient.Crisp sticking transformation can at high temperature occur in barium fluoride simultaneously, plays the high temperature lubricating effect; Decomposite Mo during molybdenumdisulphide high temperature, Mo can form Fe-Mo sosoloid and a small amount of intermetallic compound with Fe, thereby improves mechanical property, and the high temperature oxidation product MoO of Mo
2And MoO
3Has preferably lubricity; BaF
2In the iron alloy sintering, show good chemical stability as a kind of good high temperature solid lubricant, in the high-temperature machinery friction process, Fe, Mo, BaF
2Be that the high temperature self-lubricating composite material wear surface forms by BaF
2, MoO
2, BaMoO
4, Fe
2O
3And FeMo
4F
6The composite membrane that forms, thus show good high-temperature self-lubrication abrasion resistance.
Beneficial effect: compared with prior art, the major advantage that the present invention has comprises: use bearing that this material manufactures than traditional bearing clearly superiority to be arranged, show: frictional coefficient is low, efficient is high; Excellent anti-bonding, antiwear property; Very high supporting capacity; Good lubricity is to the strict selection requirement of lubricant category five; High temperature resistant; The technological process of production is short, and operation is few, and production efficiency is high.Have good practicality and economy.
Description of drawings
Fig. 1 is the pattern scintigram of the iron-nickel-chromium of example 1 preparation;
Fig. 2 is 3 prepared iron-nickel-chromium tribological property test-results figure of example 1 ~ 3; Be followed successively by from top to bottom the product curve of embodiment 2, embodiment 3 and embodiment 1;
Fig. 3 ~ 5th, the SEM figure of 3 iron-nickel-chromiums that example 1 ~ 3 is prepared; Fig. 3 is that embodiment 1 product, Fig. 4 are embodiment 2 products, and Fig. 5 is embodiment 3 products.
Embodiment
Further illustrate the present invention below in conjunction with specific embodiment, the present embodiment is implemented under take technical solution of the present invention as prerequisite, should understand these modes and only be used for explanation the present invention and be not used in and limit the scope of the invention.
Embodiment 1
A kind of preparation method of high temperature self-lubricating composite material, its preparation process is as follows:
(1) getting weight percent is 0.3% mica, 5% barium fluoride (Chemical Reagent Co., Ltd., Sinopharm Group, content 〉=99.0%), 3% graphite (Chemical Reagent Co., Ltd., Sinopharm Group, content 〉=99.85%, granularity (≤30um) 〉=95.0%), 1% molybdenumdisulphide (Chemical Reagent Co., Ltd., Sinopharm Group, content 〉=98%), 13% copper (300 order), 43% alloy powder (Fe of 10-20%Cr, 8-12%W, 30-40%Ni and surplus) and 34.7% iron powder, on the V-type mixer, fully mix 8-10h;
(2) compound is added entry and sodium stearate (sodium stearate: batching=3:100, mass ratio; Sodium stearate: water=1:4, mass ratio) mixed solution also stirs, and mixed batching is put into baking oven, baking 8-10h;
(3) then take out the mould of packing into, control pressure is 400bar, pressurize 20-30s compression moulding;
(4) then pressed compact is put into tube furnace, logical argon gas, the speed of 5 ℃/min is warmed up to 1000 ℃ of insulation 30min, continue to be warmed up to 1160 ℃ of insulation 60min, in argon gas atmosphere, naturally cool to room temperature, then take out, with angle grinding machine abrasive material surface, can obtain qualified material.
Involutory bronze carries out pattern scanning, and the result can find out that the powder particle size is more even as shown in Figure 1, and granularity is 40 μ m approximately.
Embodiment 2
Method is with embodiment 1, and difference is 1% barium fluoride, 38.7% iron powder.
Embodiment 3
Method is with embodiment 1, and difference is 3% barium fluoride, 36.7% iron powder.
Embodiment 4
Embodiment 1 ~ 3 prepared product (iron-nickel-chromium) is carried out the tribological property test, this test is to carry out at CETR UMT-2 Multi-Specimen Test System frictional testing machines, and acquired experiment material is turned round with it friction at 45 steel disks with the 440C bead of 9mm diameter.Experiment condition is 200 ℃ of load 5kg, rotating speed 100r, time 20min, temperature.The result as shown in Figure 2, as can be seen from Figure 2 C sample (embodiment 3) frictional coefficient of pressure when 400bar is less and stable, shows friction reducing effect better.Have obvious anti-friction wear-resistant and lubrication.
Embodiment 1 ~ 3 prepared product (iron-nickel-chromium) is detected, Fig. 3 ~ 5 are figure as a result, and can find out from the SEM picture: the material C material has preferably seizure resistance, and running has less frictional coefficient under the high temperature, the frictional wear amount is little, has preferably intensity and hardness.
Claims (6)
1. high temperature self-lubricating composite for the manufacture of bearing, it is characterized in that, comprise each component of following weight percent: the molybdenumdisulphide of the barium fluoride of 1%-5%, the graphite of 1%-10%, 1%-10%, the copper of 10%-20%, the alloy powder of 40%-50% and the iron powder of 40%-55%.
2. the high temperature self-lubricating composite for the manufacture of bearing according to claim 1, it is characterized in that: described alloy powder comprises each component of following weight percent: the Fe of 10-20%Cr, 8-12%W, 30-40%Ni and surplus.
3. a method for preparing the high temperature self-lubricating composite for the manufacture of bearing claimed in claim 1 is characterized in that, may further comprise the steps:
(1) gets the barium fluoride that weight percent is 1%-5%, the graphite of 1%-10%, the molybdenumdisulphide of 1%-10%, the copper of 10%-20%, the alloy powder of 40%-50% and the iron powder of 40%-55%, on the V-type mixer, fully mix;
(2) compound is added the mixed solution of entry and sodium stearate and stirring;
(3) mixed raw material is put into baking oven, baking 8-10h;
(4) take out the mould of packing into, control pressure is at 350-450bar, pressurize 20-30s compression moulding;
(5) with pressed compact under 1100-1200 ℃ temperature, logical argon gas carries out sintering, and insulation 1-2h, then be down to room temperature after, through a small amount of following process, can obtain qualified bearing materials.
4. the method for the high temperature self-lubricating composite for the preparation of making bearing according to claim 3, it is characterized in that: in the step (1), alloy powder comprises each component of following weight percent: 10-20%Cr, 25-32%Fe, 30-40%Ni and 8-12%W.
5. the method for the high temperature self-lubricating composite for the preparation of making bearing according to claim 3 is characterized in that: in the step (2), and sodium stearate: batching=3:100; Sodium stearate: water=1:4.
6. the method for the high temperature self-lubricating composite for the preparation of making bearing according to claim 3, it is characterized in that: in the step (3), oven temperature is 80-100 ℃.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540857A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy wear-resistant corrosion-resistant bearing material and preparation method thereof |
| CN103758746A (en) * | 2014-01-17 | 2014-04-30 | 钢铁研究总院 | Steel-steel double-metal rotor and manufacturing method thereof |
| CN104131209A (en) * | 2014-07-08 | 2014-11-05 | 徐挺 | Alloy material for manufacturing bearing inner rings |
| CN104328366A (en) * | 2014-10-22 | 2015-02-04 | 苏州莱特复合材料有限公司 | Iron-based composite material and preparation method thereof |
| CN104928585A (en) * | 2015-05-16 | 2015-09-23 | 太原理工大学 | Iron-chromium-based high-temperature self-lubricating block material |
| CN107855517A (en) * | 2017-11-09 | 2018-03-30 | 自贡市川力科技股份有限公司 | A kind of oiliness bearing powdered metallurgical material and preparation method thereof |
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| CN102398029A (en) * | 2011-11-28 | 2012-04-04 | 镇江中孚复合材料有限公司 | High-temperature self-lubricating composite material for manufacturing worms and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540857A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy wear-resistant corrosion-resistant bearing material and preparation method thereof |
| CN103540857B (en) * | 2013-10-11 | 2016-08-17 | 芜湖市鸿坤汽车零部件有限公司 | A kind of Powder metallurgy wear-resistant corrosion-resistant bearing material and preparation method thereof |
| CN103758746A (en) * | 2014-01-17 | 2014-04-30 | 钢铁研究总院 | Steel-steel double-metal rotor and manufacturing method thereof |
| CN103758746B (en) * | 2014-01-17 | 2015-10-28 | 钢铁研究总院 | A kind of steel-bimetal copper-steel rotor and manufacture method thereof |
| CN104131209A (en) * | 2014-07-08 | 2014-11-05 | 徐挺 | Alloy material for manufacturing bearing inner rings |
| CN104131209B (en) * | 2014-07-08 | 2016-04-13 | 徐挺 | A kind of alloy material for the manufacture of bearing inner race |
| CN104328366A (en) * | 2014-10-22 | 2015-02-04 | 苏州莱特复合材料有限公司 | Iron-based composite material and preparation method thereof |
| CN104328366B (en) * | 2014-10-22 | 2016-06-08 | 新昌县康泓机械科技有限公司 | Iron base composite material and preparation method thereof |
| CN104928585A (en) * | 2015-05-16 | 2015-09-23 | 太原理工大学 | Iron-chromium-based high-temperature self-lubricating block material |
| CN107855517A (en) * | 2017-11-09 | 2018-03-30 | 自贡市川力科技股份有限公司 | A kind of oiliness bearing powdered metallurgical material and preparation method thereof |
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Application publication date: 20130213 |