CN105177386B - 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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- CN105177386B CN105177386B CN201510530958.6A CN201510530958A CN105177386B CN 105177386 B CN105177386 B CN 105177386B CN 201510530958 A CN201510530958 A CN 201510530958A CN 105177386 B CN105177386 B CN 105177386B
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- bearing material
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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, and in particular to a kind of Nonlubricated bearing material, a kind of nothing is further related to
The preparation method of oil-lubricated bearing material.
Background technology
With the development of science and technology, particularly performance requirement more and more higher of the people to plant equipment, Aero-Space, nuclear power station
The field such as construction and sea-freight is higher to the performance requirement of plant equipment.But the structural member that existing bearing is transmitted as power
One of, because material is limited, rub resistance ability is weaker, even if the addition lubricating oil in time in operation process, it is also difficult to make for a long time
With its mechanical life is universal shorter, and this largely limits the service behaviour of plant equipment.In addition, the machine of existing bearing
Tool intensity is also difficult to meet the requirement that plant equipment under special operation condition runs up.
The content of the invention
It is an object of the invention to provide a kind of Nonlubricated bearing material, solves existing bearing material mechanical strength
And the shortcoming of rub resistance ability difference.
The present invention also aims to provide a kind of preparation method of Nonlubricated bearing material.
The technical solution adopted in the present invention is：A kind of Nonlubricated bearing material, according to mass percent by with the following group
It is grouped into B4C：4%-8%, Ti：15%-25%, ZrO2：12%-20%, Ni：10%-15%, remaining is W, said components
Mass percent sum is 100%.
Another kind of technical scheme of the present invention is：A kind of preparation method of Nonlubricated bearing material, concrete bag
Include following steps：
Step one, weigh the B for being powder respectively according to mass percent4C：4%-8%, Ti：15%-25%,
ZrO2：12%-20%, Ni：10%-15%, remaining is W, and the mass percent sum of said components is 100%；
Step 2, the component that step one is weighed is well mixed；
Step 3, will insert through the compound of step 2 mixed processing and compressing in shaping grinding apparatus obtain base-material；
Step 4, the base-material for obtaining step 3 obtain final product Nonlubricated bearing material through sintering.
Of the invention the characteristics of, also resides in,
In step 2 each component of powder is well mixed using mixed powder machine.
It is using powder pressure-like machine that compound is compressing in step 3.
Sintering adopts vacuum heating-press sintering mode in step 4, 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 Vacuum Heat
The method of pressure sintering is obtained Nonlubricated bearing material, and the material not only has high intensity, high rigidity and anti abrasive excellent
Performance, is provided simultaneously with preferable toughness, it is adaptable to make the high operating of the industrial circles such as Aero-Space, navigation and nuclear power needs
Intensity, the Nonlubricated bearing of stable performance.
Specific embodiment
With reference to specific 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 components4C：4%-8%,
Ti：15%-25%, ZrO2：12%-20%, Ni：10%-15%, remaining is W, and the mass percent sum of said components is
100%.
Embodiment 1
A kind of preparation method of Nonlubricated bearing material that the present invention is provided, specifically includes following steps：
Step one, weigh the B for being powder respectively according to mass percent4C：4%th, Ti：25%th, ZrO2：20%th, Ni：
10%, remaining is W, and the mass percent sum of said components is 100%；
Step 2, the powdered ingredients that step one is weighed are put in mixed powder machine it are well mixed；
Step 3, the compound being well mixed through step 2 is inserted in shaping grinding apparatus it is pressed into using powder pressure-like machine
Type obtains base-material；
Step 4, the base-material Jing for obtaining step 3 are sintered using vacuum heating-press sintering mode, and sintering temperature is
1300 DEG C, obtain final product Nonlubricated bearing material.
Embodiment 2
The preparation method of another kind of Nonlubricated bearing material that the present invention is provided, specifically includes following steps：
Step one, weigh the B for being powder respectively according to mass percent4C：6%th, Ti：22%th, ZrO2：18%th, Ni：
14%, remaining is W, and the mass percent sum of said components is 100%；
Step 2, the powdered ingredients that step one is weighed are put in mixed powder machine it are well mixed；
Step 3, the compound being well mixed through step 2 is inserted in shaping grinding apparatus it is pressed into using powder pressure-like machine
Type obtains base-material；
Step 4, the base-material Jing for obtaining step 3 are sintered using vacuum heating-press sintering mode, and sintering temperature is
1350 DEG C, obtain final product Nonlubricated bearing material.
Embodiment 3
The preparation method of another kind of Nonlubricated bearing material that the present invention is provided, specifically includes following steps：
Step one, weigh the B for being powder respectively according to mass percent4C：7%th, Ti：23%th, ZrO2：20%th, Ni：
15%, remaining is W, and the mass percent sum of said components is 100%；
Step 2, the powdered ingredients that step one is weighed are put in mixed powder machine it are well mixed；
Step 3, the compound being well mixed through step 2 is inserted in shaping grinding apparatus it is pressed into using powder pressure-like machine
Type obtains base-material；
Step 4, the base-material Jing for obtaining step 3 are sintered using vacuum heating-press sintering mode, and sintering temperature is
1420 DEG C, obtain final product Nonlubricated bearing material.
Embodiment 4
The preparation method of another kind of Nonlubricated bearing material that the present invention is provided, specifically includes following steps：
Step one, weigh the B for being powder respectively according to mass percent4C：8%th, Ti：25%th, ZrO2：12%th, Ni：
15%, remaining is W, and the mass percent sum of said components is 100%；
Step 2, the powdered ingredients that step one is weighed are put in mixed powder machine it are well mixed；
Step 3, the compound being well mixed through step 2 is inserted in shaping grinding apparatus it is pressed into using powder pressure-like machine
Type obtains base-material；
Step 4, the base-material Jing for obtaining step 3 are sintered using vacuum heating-press sintering mode, and sintering temperature is
1420 DEG C, obtain final product Nonlubricated bearing material.
A kind of preparation method of Nonlubricated bearing material of the present invention is from the big B of high temperature resistant, hardness4C, corrosion resistance
By force, the ZrO of impact resistance and sinterable function admirable2, intensity is big, light specific gravity, erosion-resisting Ti, high temperature resistant, anticorrosive, machinery
The Ni of function admirable, the W that hardness is big, density is high, thermal coefficient of expansion is little, plasticity is strong carries out together vacuum heating-press sintering, wherein
With pure Ti powder and B4C powder is raw material, using Ti and B4Reaction in-situ between C, is prepared by powder metallurgic method and is with Ti
Matrix simultaneously includes TiC, TiB and B4The titanium matrix composite of various high intensity such as C and high abrasion ceramic phase reinforcement, due to all kinds of
Ceramic phase Dispersed precipitate is connected each other by metal in titanium matrix with the reaction in-situ interface of ceramics, can be effectively improved
The fracture toughness and intensity of composite, reduces its fragility；And two kinds of elements of Ni, W also can be with B4C element in C is made
With, form the carbide hard phase of various Dispersed precipitate, moreover it is possible to dissolve in and play in alloy substrate solution strengthening effect, improve alloy
Mechanical strength and high temperature corrosion resistance.Therefore the material obtained after sintering has high mechanical strength, hardness high, anticorrosive, tough
Property good and resistant to elevated temperatures characteristic, its rub resistance is very good, while service life is also very long, and its relative weight is than equal
The material substance of volume is also light, therefore is especially suitable for doing the bearing material of oil-free lubrication.
The Nonlubricated bearing material finally prepared using a kind of preparation method of Nonlubricated bearing material of the invention
Material has extraordinary mechanical performance：Obtaining its hardness by experiment can reach 46HRC-62HRC, in normal temperature temperature to 600
Under conditions of DEG C its thermal coefficient of expansion be only 4.5 μm/- 6.8 μm of (mk)/(mk), compression strength at normal temperatures is
736MPa-984MPa, under conditions of 600 DEG C compression strength be 513MPa-632MPa, its coefficient of friction at different temperatures
And wear rate is as shown in table 1：
| Temperature DEG C | Coefficient of friction | Wear rate × 10-14, m3(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 |
Table 1
Claims (4)
1. a kind of Nonlubricated bearing material, it is characterised in that according to mass percent B composed of the following components4C：4%-8%,
Ti：15%-25%, ZrO2：12%-20%, Ni：10%-15%, remaining is W, and the mass percent sum of said components is
100%.
2. a kind of preparation method of Nonlubricated bearing material as claimed in claim 1, it is characterised in that specifically include following
Step：
Step one, weigh the B for being powder respectively according to mass percent4C：4%-8%, Ti：15%-25%, ZrO2：
12%-20%, Ni：10%-15%, remaining is W, and the mass percent sum of said components is 100%；
Step 2, the component that step one is weighed is well mixed；
Step 3, will insert through the compound of step 2 mixed processing and compressing in shaping grinding apparatus obtain base-material；
Step 4, the base-material for obtaining step 3 are sintered using vacuum hotpressing mode, and sintering temperature is 1300 DEG C -1420 DEG C,
Obtain final product Nonlubricated bearing material.
3. a kind of preparation method of Nonlubricated bearing material as claimed in claim 2, it is characterised in that in the step 2
The each component of powder is well mixed using mixed powder machine.
4. a kind of preparation method of Nonlubricated bearing material as claimed in claim 2, it is characterised in that in the step 3
It is using powder pressure-like machine that compound is compressing.
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| CN201510530958.6A CN105177386B (en) | 2015-08-26 | 2015-08-26 | Oil-free lubricating bearing material and preparation method thereof |
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| CN105177386B true CN105177386B (en) | 2017-05-10 |
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| CN105441765B (en) * | 2016-01-05 | 2018-01-09 | 河南科技大学 | Bullet high-specific 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 |
Citations (3)
| 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 |
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| JP5881740B2 (en) * | 2011-12-20 | 2016-03-09 | 株式会社東芝 | Tungsten alloy and tungsten alloy parts, discharge lamp, transmitter tube and magnetron using the same |
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Patent Citations (3)
| 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 |
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