CN106086687A - The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low - Google Patents
The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low Download PDFInfo
- Publication number
- CN106086687A CN106086687A CN201610732470.6A CN201610732470A CN106086687A CN 106086687 A CN106086687 A CN 106086687A CN 201610732470 A CN201610732470 A CN 201610732470A CN 106086687 A CN106086687 A CN 106086687A
- Authority
- CN
- China
- Prior art keywords
- expansion
- temperature
- sliding bearing
- thermal coefficient
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
- B22F5/106—Tube or ring forms
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Sliding-Contact Bearings (AREA)
- Lubricants (AREA)
Abstract
The invention discloses the preparation method of the low sliding bearing of a kind of thermal coefficient of expansion, including step in detail below: 1) batch mixing, by the powder making grain diameter averagely less than 8 microns of regrinding after following dusty material mixing by weight percentage: graphite 0.2 0.7%, aluminium oxide 0.01 0.03%, holmium 0.001 0.002%, chromium 0.1 0.15%, molybdenum bisuphide 0.2 0.3%, bismuth 0.01 0.05%, copper 0.3 0.5%, boron 0.02 0.03%, zinc stearate 0.3 0.45%, surplus is ferrum;It is relatively low that sliding bearing prepared by the inventive method has coefficient of friction, and anti-wear performance is high, the advantage that thermal coefficient of expansion is low.
Description
Technical field
The present invention relates to the preparation method of the low sliding bearing of a kind of thermal coefficient of expansion.
Background technology
Existing sliding bearing is compared with rolling bearing, and owing to coefficient of friction is higher, anti-wear performance is not enough, thermal coefficient of expansion
High factor and seriously hinder its development.And in the parts that some low speed, loading demands are the highest, sliding bearing has quality
Little, the advantage such as Stability Analysis of Structures, especially combine the characteristic of oil-free lubrication and develop that to be provided simultaneously with coefficient of friction relatively low, anti-wear performance
Height, thermal coefficient of expansion is low, and the sliding bearing of oil-free lubrication has important practical significance.
Summary of the invention
The technical problem to be solved is, the shortcoming overcoming above prior art: provide a kind of coefficient of friction relatively
Low, anti-wear performance is high, the preparation method of the sliding bearing that the thermal coefficient of expansion of oil-free lubrication is low.
The technical solution of the present invention is as follows: the preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low, including with
Lower concrete steps:
1) batch mixing, makes grain diameter averagely less than 8 microns by regrinding after following dusty material mixing by weight percentage
Powder: graphite 0.2-0.7%, aluminium oxide 0.01-0.03%, holmium 0.001-0.002%, chromium 0.1-0.15%, molybdenum bisuphide
0.2-0.3%, bismuth 0.01-0.05%, copper 0.3-0.5%, boron 0.02-0.03%, zinc stearate 0.3-0.45%, surplus
For ferrum;
2) compacting, uses the mode that one or many is filled, and in mould, the pressure with 600-750MPa suppresses the 130-260 second
Molding;
3) sintering, first presintering 1-2 hour at a temperature of 600-800 DEG C, whole under 150-200MPa pressure in mould the most again
Shape, sinters 1-3 hour at 1100-1250 DEG C, then divides the two-stage to lower the temperature, and the cooling rate of first stage is maintained at
2.5-3.5 DEG C/min, drop to temper when 400-450 DEG C at temperature, then naturally cool to immerse when 200 ± 20 DEG C
Oil temperature is oil immersion in the deep fat of 110-130 DEG C.
As optimization, in step 1), the most each blend ingredients is: graphite 0.2%, aluminium oxide 0.01%,
Holmium 0.001%, chromium 0.15%, molybdenum bisuphide 0.25%, bismuth 0.01%, copper 0.3%, boron 0.02%, zinc stearate
0.45%, surplus is ferrum.
The present invention compared with the existing technology provides the benefit that: the present invention is made between raw material by scientific and reasonable formula
Tissue morphology well with guarantee bearing under high temperature, high pressure indeformable, carry high abrasion resistance strength, reduce coefficient of friction, especially
Its thermal coefficient of expansion can be greatly reduced and realize the purpose without lubricating oil.By the technical program, the hardness of bearing surface is put down
All can reach 350-362HB, temperature is at 350 DEG C, and the coefficient of friction after 12 hours is still less than 0.1, and thermal coefficient of expansion is down to
1.12×10-6/℃。
Detailed description of the invention
With specific embodiment, the present invention is described in further details below, but the present invention is not only limited to real in detail below
Execute example.
Embodiment one
1) batch mixing, makes grain diameter averagely less than 8 microns by regrinding after following dusty material mixing by weight percentage
Powder: graphite 0.2-0.7%, aluminium oxide 0.01-0.03%, holmium 0.001-0.002%, chromium 0.1-0.15%, molybdenum bisuphide
0.2-0.3%, bismuth 0.01-0.05%, copper 0.3-0.5%, boron 0.02-0.03%, zinc stearate 0.3-0.45%, surplus
For ferrum;
2) compacting, uses the mode that one or many is filled, and in mould, the pressure with 600-750MPa suppresses the 130-260 second
Molding;
3) sintering, first presintering 1-2 hour at a temperature of 600-800 DEG C, the most again with 150-200MPa pressure in mould
Lower shaping, sinters 1-3 hour at 1100-1250 DEG C, then divides the two-stage to lower the temperature, and the cooling rate of first stage keeps
At 2.5-3.5 DEG C/min, drop to temper when 400-450 DEG C at temperature, then naturally cool to leaching when 200 ± 20 DEG C
Enter oil temperature oil immersion in the deep fat of 110-130 DEG C.
Embodiment two
1) batch mixing, makes grain diameter averagely less than 8 microns by regrinding after following dusty material mixing by weight percentage
Powder: graphite 0.5%, aluminium oxide 0.02%, holmium 0.001%, chromium 0.15%, molybdenum bisuphide 0.3%, bismuth 0.05%, copper
0.5%, boron 0.02%, zinc stearate 0.3%, surplus is ferrum;
2) compacting, uses the mode that one or many is filled, and in mould, the pressure with 750MPa suppresses molding in 260 seconds;
3) sintering, first presintering 1-2 hour at a temperature of 800 DEG C, the most again with shaping under 200MPa pressure in mould, then
Sintering 3 hours at 1250 DEG C, then divide the two-stage to lower the temperature, the cooling rate of first stage is maintained at 2.5 DEG C/min, in temperature
Temper when degree drops to 450 DEG C, then naturally cools to immerse oil temperature oil in the hot engine oil of 130 DEG C when 200 ± 20 DEG C
Leaching.
Embodiment three
1) batch mixing, makes grain diameter averagely less than 8 microns by regrinding after following dusty material mixing by weight percentage
Powder: graphite 0.2%, aluminium oxide 0.01%, holmium 0.001%, chromium 0.15%, molybdenum bisuphide 0.25%, bismuth 0.01%,
Copper 0.3%, boron 0.02%, zinc stearate 0.45%, surplus is ferrum.
2) compacting, uses the mode that one or many is filled, and in mould, the pressure with 600MPa suppresses molding in 260 seconds;
3) sintering, first presintering 2 hours at a temperature of 600 DEG C, the most again with shaping under 150MPa pressure in mould, then at
Sintering 1 hour at 1250 DEG C, then divide the two-stage to lower the temperature, the cooling rate of first stage is maintained at 3.5 DEG C/min, in temperature
Temper when dropping to 450 DEG C, then naturally cools to immerse oil temperature oil immersion in the deep fat of 130 DEG C when 200 ± 20 DEG C;Survey
The hardness of the present embodiment bearing surface averagely can reach 350-362HB, temperature at 350 DEG C, the coefficient of friction after 12 hours
Still less than 0.1, thermal coefficient of expansion is down to 1.12 × 10-6/℃。
Below it is only that inventive feature implements example, scope is not constituted any limitation.All employings are same
The technical scheme replaced Deng exchange or equivalence and formed, within the scope of all falling within rights protection of the present invention.
Claims (2)
1. the preparation method of the sliding bearing that a thermal coefficient of expansion is low, it is characterised in that: include step in detail below:
1) batch mixing, makes grain diameter averagely less than 8 microns by regrinding after following dusty material mixing by weight percentage
Powder: graphite 0.2-0.7%, aluminium oxide 0.01-0.03%, holmium 0.001-0.002%, chromium 0.1-0.15%, molybdenum bisuphide
0.2-0.3%, bismuth 0.01-0.05%, copper 0.3-0.5%, boron 0.02-0.03%, zinc stearate 0.3-0.45%, surplus
For ferrum;
2) compacting, uses the mode that one or many is filled, and in mould, the pressure with 600-750MPa suppresses the 130-260 second
Molding;
3) sintering, first presintering 1-2 hour at a temperature of 600-800 DEG C, the most again with 150-200MPa pressure in mould
Lower shaping, sinters 1-3 hour at 1100-1250 DEG C, then divides the two-stage to lower the temperature, and the cooling rate of first stage keeps
At 2.5-3.5 DEG C/min, drop to temper when 400-450 DEG C at temperature, then naturally cool to leaching when 200 ± 20 DEG C
Enter oil temperature oil immersion in the deep fat of 110-130 DEG C.
The preparation method of the sliding bearing that thermal coefficient of expansion the most according to claim 1 is low, it is characterised in that: step 1)
In, the most each blend ingredients is: graphite 0.2%, aluminium oxide 0.01%, holmium 0.001%, chromium 0.15%, two sulfur
Changing molybdenum 0.25%, bismuth 0.01%, copper 0.3%, boron 0.02%, zinc stearate 0.45%, surplus is ferrum.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610732470.6A CN106086687A (en) | 2016-08-27 | 2016-08-27 | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610732470.6A CN106086687A (en) | 2016-08-27 | 2016-08-27 | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106086687A true CN106086687A (en) | 2016-11-09 |
Family
ID=57225341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610732470.6A Pending CN106086687A (en) | 2016-08-27 | 2016-08-27 | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106086687A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107824780A (en) * | 2017-10-20 | 2018-03-23 | 广西银英生物质能源科技开发股份有限公司 | Powder metallurgy material for bearing and preparation method thereof |
CN108883472A (en) * | 2016-03-04 | 2018-11-23 | 大冶美有限公司 | Cu base sintered sliding material and its manufacturing method |
US10745780B2 (en) | 2014-09-04 | 2020-08-18 | Diamet Corporation | Cu-based sintered bearing and production method for Cu-based sintered bearing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102974825A (en) * | 2012-11-22 | 2013-03-20 | 浙江明磊工具实业有限公司 | Manufacturing method of drill bit |
CN102996638A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Ceramimetallurgical oil-free lubrication bearing |
CN102994879A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Ceramimetallurgical oil-free lubrication bearing and manufacturing method thereof |
CN103008643A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Method for manufacturing oil-free lubrication bearing for powder metallurgy |
-
2016
- 2016-08-27 CN CN201610732470.6A patent/CN106086687A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102974825A (en) * | 2012-11-22 | 2013-03-20 | 浙江明磊工具实业有限公司 | Manufacturing method of drill bit |
CN102996638A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Ceramimetallurgical oil-free lubrication bearing |
CN102994879A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Ceramimetallurgical oil-free lubrication bearing and manufacturing method thereof |
CN103008643A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Method for manufacturing oil-free lubrication bearing for powder metallurgy |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10745780B2 (en) | 2014-09-04 | 2020-08-18 | Diamet Corporation | Cu-based sintered bearing and production method for Cu-based sintered bearing |
CN108883472A (en) * | 2016-03-04 | 2018-11-23 | 大冶美有限公司 | Cu base sintered sliding material and its manufacturing method |
CN108883472B (en) * | 2016-03-04 | 2020-08-18 | 大冶美有限公司 | Cu-based sintered sliding material and method for producing same |
US10941465B2 (en) | 2016-03-04 | 2021-03-09 | Diamet Corporation | Cu-based sintered sliding material, and production method therefor |
CN107824780A (en) * | 2017-10-20 | 2018-03-23 | 广西银英生物质能源科技开发股份有限公司 | Powder metallurgy material for bearing and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106086687A (en) | The preparation method of the sliding bearing that a kind of thermal coefficient of expansion is low | |
CN106238736A (en) | A kind of preparation method of low-friction coefficient sliding bearing | |
CN104384503B (en) | A kind of ferrum copper-base powder metallurgy antifriction material and preparation method thereof | |
CN102994879A (en) | Ceramimetallurgical oil-free lubrication bearing and manufacturing method thereof | |
CN102199330A (en) | Method for preparing modified Teflon composite material and its product | |
CN105112760B (en) | A kind of preparation method and applications of TiAl based high-temperature self-lubricating alloy material | |
CN103008643A (en) | Method for manufacturing oil-free lubrication bearing for powder metallurgy | |
CN109047776A (en) | A kind of wear-resisting bite-resistant composite material, wear-resisting bite-resistant composite plate and preparation method thereof | |
CN106048440A (en) | Bearing material | |
CN106086556B (en) | A kind of low-noise wearable oiliness bearing | |
CN110004373A (en) | A method of gear is manufactured with antifriction material of powder metallurgy | |
CN102773482A (en) | Method for manufacturing butterfly valve rod by powder metallurgy | |
CN106077627A (en) | A kind of preparation method of sliding bearing | |
CN103436756B (en) | A kind of high abrasion not seize aluminum base alloy and preparation method thereof | |
CN107584287A (en) | A kind of preparation method of micro- texture self-lubricating ceramic guide rail | |
CN106216686A (en) | A kind of preparation method of wear-resisting low-friction coefficient motor shaft sleeve | |
CN107663615B (en) | A kind of high self-lubricating ferrous alloy of high intensity and preparation method and application | |
CN109622971A (en) | A kind of processing technology of rail traffic low porosity high-precision bearing | |
CN105568152B (en) | Alloy powder and alloy raw material composition and alloy components and its forming method and blade and roller compressor | |
CN101870907A (en) | High temperature grease and preparation method thereof | |
CN103627921A (en) | Copper-based self-lubricating composite material containing WS2 and MoS2 and preparation method thereof | |
CN100540926C (en) | A kind of by spacer ring in the bearing of powdered metallurgical material making | |
CN102773484A (en) | Method for manufacturing ball-shaped check valve body by powder metallurgy | |
CN103421992B (en) | Manufacturing technique of timing sprocket device for ultralight aluminium alloy valve camshaft | |
CN111570805B (en) | Method for manufacturing gear by using powder metallurgy antifriction material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |