CN105177386A - Oil-free lubricating bearing material and preparation method thereof - Google Patents
Oil-free lubricating bearing material and preparation method thereof Download PDFInfo
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- CN105177386A CN105177386A CN201510530958.6A CN201510530958A CN105177386A CN 105177386 A CN105177386 A CN 105177386A CN 201510530958 A CN201510530958 A CN 201510530958A CN 105177386 A CN105177386 A CN 105177386A
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- free lubricating
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Abstract
The invention discloses an oil-free lubricating bearing material. The oil-free lubricating bearing material is composed of the following components in percentage by mass: 4-8% of B4C, 15-25% of Ti, 12-20% of ZrO2, 10-15% of Ni and the balance W, wherein the sum of the percentages by mass of the components is 100%. A preparation method for the oil-free lubricating bearing material disclosed by the invention comprises the four steps of weighing, powder mixing, compression moulding and vacuum hot-pressing sintering. According to the oil-free lubricating bearing material and the preparation method thereof disclosed by the invention, the oil-free lubricating bearing material is prepared by means of vacuum hot-pressing sintering; and the material has the excellent performance of high strength, high hardness, high-temperature resistance and wear resistance, as well as is high in toughness and applicable to produce oil-free lubricating bearings with high running intensity and stable performance, which are needed in the industrial fields of aerospace, navigation, nuclear power and the like.
Description
Technical field
The invention belongs to technical field of alloy material, be specifically related to a kind of Nonlubricated bearing material, also relate to a kind of preparation method of Nonlubricated bearing material.
Background technology
Along with the development of science and technology, the performance requriements of people to mechanical means is more and more higher, and particularly the performance requriements of field to mechanical means such as aerospace, the construction of nuclear power station and sea-freight is higher.But existing bearing is as one of the structural part of transmission of power, and because material limit, rub resistance ability is more weak, even if timely oil addition in operation process, also be difficult to permanent use, its mechanical life is general shorter, and this limits the serviceability of mechanical means largely.In addition, the physical strength of existing bearing is also difficult to meet the requirement that mechanical means under special operation condition runs up.
Summary of the invention
The object of the present invention is to provide a kind of Nonlubricated bearing material, solve the shortcoming of existing bearing materials physical strength and rub resistance ability.
The present invention also aims to the preparation method that a kind of Nonlubricated bearing material is provided.
The technical solution adopted in the present invention is: a kind of Nonlubricated bearing material, according to mass percent B composed of the following components
4c:4%-8%, Ti:15%-25%, ZrO
2: 12%-20%, Ni:10%-15%, all the other are W, and the mass percent sum of said components is 100%.
Another kind of technical scheme of the present invention is: a kind of preparation method of Nonlubricated bearing material, specifically comprises the following steps:
Step one, to take respectively according to mass percent and be pulverous B
4c:4%-8%, Ti:15%-25%, ZrO
2: 12%-20%, Ni:10%-15%, all the other are W, and the mass percent sum of said components is 100%;
Step 2, component step one taken mix;
Step 3, the compound through step 2 combination treatment is inserted compression moulding in shaping grinding apparatus obtain base-material;
Step 4, the base-material that step 3 obtained, through oversintering, obtain Nonlubricated bearing material.
Feature of the present invention is also,
Mixed powder machine is utilized pulverous each component to be mixed in step 2.
Utilize powder pressure-like machine by compound compression moulding in step 3.
In step 4, sintering adopts vacuum heating-press sintering mode, and sintering temperature is 1300 DEG C-1420 DEG C.
The invention has the beneficial effects as follows: a kind of Nonlubricated bearing material of the present invention and preparation method thereof adopts the method for vacuum heating-press sintering to obtain Nonlubricated bearing material, this material not only has high strength, high rigidity and anti abrasive excellent properties, possess good toughness simultaneously, be applicable to make the height running intensity of the industrial circle needs such as aerospace, navigation and nuclear power, the Nonlubricated bearing of stable performance.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
A kind of Nonlubricated bearing material of the present invention, according to mass percent B composed of the following components
4c:4%-8%, Ti:15%-25%, ZrO
2: 12%-20%, Ni:10%-15%, all the other are W, and the mass percent sum of said components is 100%.
Embodiment 1
The preparation method of a kind of Nonlubricated bearing material provided by the invention, specifically comprises the following steps:
Step one, to take respectively according to mass percent and be pulverous B
4c:4%, Ti:25%, ZrO
2: 20%, Ni:10%, all the other are W, and the mass percent sum of said components is 100%;
Step 2, powdered ingredients step one taken are put into mixed powder machine and are mixed;
Step 3, the compound mixed inserted in shaping grinding apparatus utilize the compression moulding of powder pressure-like machine to obtain base-material through step 2;
Step 4, base-material step 3 obtained sinter through adopting vacuum heating-press sintering mode, and sintering temperature is 1300 DEG C, obtains Nonlubricated bearing material.
Embodiment 2
The preparation method of another kind of Nonlubricated bearing material provided by the invention, specifically comprises the following steps:
Step one, to take respectively according to mass percent and be pulverous B
4c:6%, Ti:22%, ZrO
2: 18%, Ni:14%, all the other are W, and the mass percent sum of said components is 100%;
Step 2, powdered ingredients step one taken are put into mixed powder machine and are mixed;
Step 3, the compound mixed inserted in shaping grinding apparatus utilize the compression moulding of powder pressure-like machine to obtain base-material through step 2;
Step 4, base-material step 3 obtained sinter through adopting vacuum heating-press sintering mode, and sintering temperature is 1350 DEG C, obtains Nonlubricated bearing material.
Embodiment 3
The preparation method of another kind of Nonlubricated bearing material provided by the invention, specifically comprises the following steps:
Step one, to take respectively according to mass percent and be pulverous B
4c:7%, Ti:23%, ZrO
2: 20%, Ni:15%, all the other are W, and the mass percent sum of said components is 100%;
Step 2, powdered ingredients step one taken are put into mixed powder machine and are mixed;
Step 3, the compound mixed inserted in shaping grinding apparatus utilize the compression moulding of powder pressure-like machine to obtain base-material through step 2;
Step 4, base-material step 3 obtained sinter through adopting vacuum heating-press sintering mode, and sintering temperature is 1420 DEG C, obtains Nonlubricated bearing material.
Embodiment 4
The preparation method of another kind of Nonlubricated bearing material provided by the invention, specifically comprises the following steps:
Step one, to take respectively according to mass percent and be pulverous B
4c:8%, Ti:25%, ZrO
2: 12%, Ni:15%, all the other are W, and the mass percent sum of said components is 100%;
Step 2, powdered ingredients step one taken are put into mixed powder machine and are mixed;
Step 3, the compound mixed inserted in shaping grinding apparatus utilize the compression moulding of powder pressure-like machine to obtain base-material through step 2;
Step 4, base-material step 3 obtained sinter through adopting vacuum heating-press sintering mode, and sintering temperature is 1420 DEG C, obtains Nonlubricated bearing material.
The preparation method of a kind of Nonlubricated bearing material of the present invention selects high temperature resistant, that hardness is large B
4c, the ZrO that solidity to corrosion is strong, shock resistance and sinterability can be excellent
2, intensity is large, light specific gravity, erosion-resisting Ti, and the Ni of high temperature resistant, anticorrosive, good mechanical performance, the W that hardness is large, density is high, thermal expansivity is little, plasticity-is strong carries out vacuum heating-press sintering together, wherein with pure Ti powder and B
4c powder is raw material, utilizes Ti and B
4reaction in－situ between C, is prepared by powder metallurgic method and is matrix with Ti and comprises TiC, TiB and B
4the titanium matrix composite of the multiple high strength such as C and high abrasion ceramic phase reinforcement, because all kinds of ceramic phase Dispersed precipitate is in titanium metal matrix, be connected each other by the reaction in－situ interface of metal with pottery, effectively can improve fracture toughness property and the intensity of matrix material, reduce its fragility; And Ni, W two kinds of elements also can with B
4c element in C is had an effect, and forms the carbide hard phase of various Dispersed precipitate, can also dissolve in alloy substrate and play solution strengthening effect, carry heavy alloyed physical strength and high temperature corrosion resistance.Therefore after sintering the material that obtains have that physical strength is high, hardness is high, anticorrosive, good toughness and resistant to elevated temperatures characteristic, its rub resistance is very good, work-ing life is also very long simultaneously, and its relative weight is also lighter than the material substance of equal volume, be therefore applicable to very much the bearing materials doing oil-free lubricatoin.
The Nonlubricated bearing material utilizing the preparation method of a kind of Nonlubricated bearing of the present invention material finally to prepare has extraordinary mechanical property: obtaining its hardness by experiment can reach 46HRC-62HRC, under the condition of normal temperature temperature to 600 DEG C, its thermal expansivity is only 4.5 μm/(mk)-6.8 μm/(mk), ultimate compression strength is at normal temperatures 736MPa-984MPa, under the condition of 600 DEG C, ultimate compression strength is 513MPa-632MPa, its frictional coefficient at different temperatures and wear rate as shown in table 1:
table 1
| Temperature DEG C | Frictional coefficient | Wear rate × 10 -14，m 3(N·m) |
| 25 | 0.36～0.48 | 2.18～4.25 |
| 400 | 0.26～0.37 | 0.53～3.22 |
| 680 | 0.13～0.29 | 0.36～2.87 |
Claims (5)
1. a Nonlubricated bearing material, is characterized in that, according to mass percent B composed of the following components
4c:4%-8%, Ti:15%-25%, ZrO
2: 12%-20%, Ni:10%-15%, all the other are W, and the mass percent sum of said components is 100%.
2. the preparation method of a kind of Nonlubricated bearing material as claimed in claim 1, is characterized in that, specifically comprise the following steps:
Step one, to take respectively according to mass percent and be pulverous B
4c:4%-8%, Ti:15%-25%, ZrO
2: 12%-20%, Ni:10%-15%, all the other are W, and the mass percent sum of said components is 100%;
Step 2, component step one taken mix;
Step 3, the compound through step 2 combination treatment is inserted compression moulding in shaping grinding apparatus obtain base-material;
Step 4, the base-material that step 3 obtained, through oversintering, obtain Nonlubricated bearing material.
3. the preparation method of a kind of Nonlubricated bearing material as claimed in claim 2, is characterized in that, utilizes mixed powder machine pulverous each component to be mixed in described step 2.
4. the preparation method of a kind of Nonlubricated bearing material as claimed in claim 2, is characterized in that, utilizes powder pressure-like machine by compound compression moulding in described step 3.
5. the preparation method of a kind of Nonlubricated bearing material as claimed in claim 2, is characterized in that, in described step 4, sintering adopts vacuum heating-press sintering mode, and sintering temperature is 1300 DEG C-1420 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105441765A (en) * | 2016-01-05 | 2016-03-30 | 河南科技大学 | Missile heavy-gravity tungsten alloy and preparation method thereof |
| CN108504918A (en) * | 2018-04-09 | 2018-09-07 | 张家港市海工船舶机械制造有限公司 | A kind of Nonlubricated bearing and its preparation process |
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| CN101210305A (en) * | 2006-12-31 | 2008-07-02 | 王为 | Tungsten alloy composite plating coat material and manufacturing method thereof |
| CN101698918A (en) * | 2009-10-22 | 2010-04-28 | 甘肃省科学院磁性器件研究所 | Bearing material and preparation method thereof |
| CN101967577A (en) * | 2010-10-28 | 2011-02-09 | 中国科学院理化技术研究所 | Method for preparing tungsten-based alloy |
| WO2013094685A1 (en) * | 2011-12-20 | 2013-06-27 | 株式会社 東芝 | Tungsten alloy, and tungsten alloy part, discharge lamp, transmitting tube and magnetron using tungsten alloy |
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2015
- 2015-08-26 CN CN201510530958.6A patent/CN105177386B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210305A (en) * | 2006-12-31 | 2008-07-02 | 王为 | Tungsten alloy composite plating coat material and manufacturing method thereof |
| CN101698918A (en) * | 2009-10-22 | 2010-04-28 | 甘肃省科学院磁性器件研究所 | Bearing material and preparation method thereof |
| CN101967577A (en) * | 2010-10-28 | 2011-02-09 | 中国科学院理化技术研究所 | Method for preparing tungsten-based alloy |
| WO2013094685A1 (en) * | 2011-12-20 | 2013-06-27 | 株式会社 東芝 | Tungsten alloy, and tungsten alloy part, discharge lamp, transmitting tube and magnetron using tungsten alloy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105441765A (en) * | 2016-01-05 | 2016-03-30 | 河南科技大学 | Missile heavy-gravity tungsten alloy and preparation method thereof |
| CN108504918A (en) * | 2018-04-09 | 2018-09-07 | 张家港市海工船舶机械制造有限公司 | A kind of Nonlubricated bearing and its preparation process |
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| CN105177386B (en) | 2017-05-10 |
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