CN106077667B - Ferrous based powder metallurgical high temperature resistant not oiliness bearing and its manufacturing method - Google Patents
Ferrous based powder metallurgical high temperature resistant not oiliness bearing and its manufacturing method Download PDFInfo
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- CN106077667B CN106077667B CN201610645959.XA CN201610645959A CN106077667B CN 106077667 B CN106077667 B CN 106077667B CN 201610645959 A CN201610645959 A CN 201610645959A CN 106077667 B CN106077667 B CN 106077667B
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- high temperature
- oiliness bearing
- temperature resistant
- manufacturing
- based powder
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- 239000000843 powder Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 35
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000005864 Sulphur Substances 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims 3
- 238000001764 infiltration Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 238000007654 immersion Methods 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- 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
- B22F3/1017—Multiple heating or additional steps
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
- C23C8/62—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a kind of ferrous based powder metallurgical high temperature resistant, oiliness bearing and its manufacturing method, the manufacturing method of the present invention do not include the following steps：Double sintering：After first sintering completion is come out of the stove, lastblock is put in the top and bottom of product and oozes block by the sulphur that forms of Cosan compacting is molten, double sintering is carried out, S is in the molten gap infiltered between product crystal under the action of high temperature, while part S is combined the compound to form S with Fe.Reach 8% 18% by the amount containing S of the not oiliness bearing of ferrous based powder metallurgical high temperature resistant made from this manufacturing method, the lubricant effect of common iron-based powder oiliness bearing is reached, so as to which the processing step of immersion oil be omitted, the phenomenon that causing bearing not oil-containing, avoiding stuck or oil leak caused by occurring bearing drier oil or permeability under the working environment of high temperature.
Description
Technical field
The invention belongs to metal material powder metallurgical technology fields, and in particular to a kind of ferrous based powder metallurgical high temperature resistant is free of
Oil bearing and its manufacturing method.
Background technology
Metal sintering oiliness bearing is a kind of sintering material made of powder metallurgical technique using metal powder as raw material
Material.Metal sintering oiliness bearing product is inherently porous, and with the quantity in freely adjustable gap in the fabrication process,
The advantages of size and distribution.Sintering metal oiliness bearing has been widely used in automobile, household electrical appliances, Transport Machinery, agricultural machinery, instrument
The various fields such as instruments and meters.
Metal sintering oiliness bearing have it is at low cost, can absorbing, noise be small, do not have within the longer working time plus lubricating oil
The features such as, especially suitable for the working environment for being not easy to lubricate or do not allow oil dirty.Porosity is metal sintering oiliness bearing
One important parameter.More in the metal sintering oiliness bearing requirement oil content to work at a high speed, under underloading, porosity is preferably high；Low
Speed, the metal sintering oiliness bearing desired strength of the larger lower work of load are high, and porosity is preferably low.This bearing invention is in 20th century
Just, because its manufacture is at low cost, easy to use, be widely applied, it has also become automobile, household electrical appliances, stereo set, office equipment,
The various industrial products such as agricultural machinery, precision machinery develop indispensable a kind of fundamental parts.
Modern industry master metal sintering oiliness bearing to be used can be divided into copper-based, iron-based, copper and iron base etc. by basis material.
But the ferrous based powder metallurgical conveyed used in unit, plastics machinery molding axle sleeve etc. in the fuel of garbage power unit at present contains
Oil bearing causes bearing and axis stuck or the phenomenon that oil leak usually because drier oil or oil exudation occurs in high temperature.
Invention content
It is an object of the invention to overcoming disadvantages mentioned above in the prior art, a kind of high temperature resistant, not oil-containing are provided
Iron-base bearing.
To achieve these goals, the manufacturing method of the present invention includes the following steps：
Double sintering：After first sintering completion is come out of the stove, lastblock is put in the top and bottom of product by sulphur
The sulphur that forms of powder compacting is molten to ooze block, carries out double sintering, S in the molten gap infiltered between product crystal under the action of high temperature,
Part S is combined the compound to form S with Fe simultaneously.Sintered bearing amount containing S is up to the change of the C and C in 8%-18%, with bearing
Lubrication can be played the role of together by closing object.
In the present invention, further, it is further comprising the steps of before double sintering：
Batch mixing：Graphite powder, zinc stearate, Cosan and iron powder are mixed.
The compacting of blank：The raw material mixed is pressed into blank.
The molten compacting for oozing block of sulphur：The Cosan proportional with the weight of single blank be pressed into sulphur is molten to be oozed
Block.
First sintering：Under the protective atmosphere of nitrogen and hydrogen, blank is sintered with 1050 DEG C of temperature.
In the present invention, further, after double sintering, shaping is further included, double sintering carries out unhairing after coming out of the stove
Pierce shaping so that product size reaches Design Requirement Drawing.
In the present invention, it is preferred to, in batch mixing, the weight percent of graphite powder is 1-3%, the weight percent of zinc stearate
Than for 0.4-0.8%, the weight percent of Cosan is 0.4-0.6%, and surplus is iron powder.
In the present invention, further, it in the compacting of blank, is suppressed by the density of 5.8-6.2g/cm3.
In the present invention, it is preferred to, in the molten compacting for oozing block of sulphur, the molten weight for oozing Cosan used in block of single sulphur
Amount is calculated as follows formula and gets：（The density of the single blanks of 6.8-）The volume of × single blank.
In the present invention, it is preferred to, in double sintering, under the protective atmosphere of nitrogen and hydrogen, with 600 DEG C of temperature into
Row sintering.
Ferrous based powder metallurgical high temperature resistant obtained not oiliness bearing by the above-mentioned manufacture method, it is preferred that graphite powder 399
Flaky graphite powder.
Ferrous based powder metallurgical high temperature resistant obtained not oiliness bearing by the above-mentioned manufacture method, it is preferred that iron powder is 80 mesh
Reduced iron powder.
The beneficial effects of the invention are as follows：The compound of S and S is because its crystal structure is hexagonal, so as to play profit
Sliding effect, S is in the molten gap infiltered between product crystal under the action of high temperature, while part S is combined the chemical combination to form S with Fe
Object.Bearing amount containing S obtained by the present invention reaches 8%-18%, has reached the lubricant effect of common iron-based powder oiliness bearing, from
And the processing step of immersion oil is omitted so that bearing not oil-containing, avoid occur under the working environment of high temperature bearing drier oil or
Caused by permeability the phenomenon that stuck or oil leak.
Specific embodiment
Embodiment 1
Step 1：By 2 part of 399 flaky graphite powder, 0.6 part of zinc stearate, 0.5 part of Cosan and 97 part of 80 mesh reduced iron powder
It is mixed.
Step 2：The raw material mixed by the density of 5.8g/cm3 is suppressed, blank is made.
Step 3：Two parts of Cosan is taken by suppressing twice, is made that two blocks of sulphur are molten to ooze block.
Step 4：Under the protective atmosphere of nitrogen and hydrogen, blank is sintered with 1050 DEG C of temperature.
Step 5：After first sintering completion is come out of the stove, respectively put one piece in the top and bottom of product and be made by step 3
Sulphur it is molten ooze block, under the protective atmosphere of nitrogen and hydrogen, double sintering is carried out with 600 DEG C of temperature, S is in the effect of high temperature
Under in the molten gap infiltered between product crystal, while part S is combined the compound to form S with Fe.
Step 6：Double sintering carries out deburring shaping after coming out of the stove so that product size reaches Design Requirement Drawing.
According to the bearing obtained by the present embodiment, it is subjected to physico-chemical analysis, analysis result according to GB2688-2012 standards
It is as follows：The content of Fe is 85.30%, the content of the compound of S and S is 10.60%, the content of C is 2.05%, other ingredients contain
Measure ＜ 2.05%.The density of bearingρ=5.85g/cm3, radial crushing strength K=172MPa comply fully with the mark of GB2688-2012
Alignment request.
Embodiment 2
Step 1：2 part of 399 flaky graphite powder, 0.6 part of zinc stearate, 0.5 part of sulphur, 100 part of 80 mesh reduced iron powder are carried out
Mixing.
Step 2：The raw material mixed is suppressed by the density of 6.2g/cm3, blank obtained.
Step 3：Two parts of Cosan is taken by suppressing twice, is made that two blocks of sulphur are molten to ooze block.
Step 4：Under the protective atmosphere of nitrogen and hydrogen, blank is sintered with 1050 DEG C of temperature.
Step 5：After first sintering completion is come out of the stove, in the top and bottom of product, respectively pendulum lastblock is made by step 3
Sulphur it is molten ooze block, under the protective atmosphere of nitrogen and hydrogen, double sintering is carried out with 600 DEG C of temperature, S is in the work of high temperature
Under in the molten gap infiltered between product crystal, while part S is combined the compound to form S with Fe.
Step 6：Double sintering carries out deburring shaping after coming out of the stove so that product size reaches Design Requirement Drawing.
According to the bearing obtained by the present embodiment, it is subjected to physico-chemical analysis, analysis result according to GB2688-2012 standards
It is as follows：The content of Fe is 87.95%, the content of the compound of S and S is 8.02%, the content of C is 2.03%, other ingredients contain
Measure ＜ 2.0%.The density of bearingρ=6.21g/cm3, radial crushing strength K=246.5MPa comply fully with the mark of GB2688-2012
Alignment request.
It should be pointed out that be described above the embodiment of the present invention.However, art technology it is to be understood by the skilled artisans that
The present invention is not limited to the above embodiments, merely illustrating the principles of the invention described in above-described embodiment, is not departing from this
The present invention can also be there are many changes and improvements under the premise of invention scope, these changes and improvements to both fall within this claimed hair
In bright range.
Claims (7)
1. the manufacturing method of a kind of ferrous based powder metallurgical high temperature resistant not oiliness bearing, which is characterized in that this method includes following step
Suddenly：
First sintering：Under the protective atmosphere of nitrogen and hydrogen, blank is sintered with 1050 DEG C of temperature；
Double sintering：After first sintering completion is come out of the stove, lastblock is put in the top and bottom of product by Cosan pressure
The sulphur infiltration block formed is made, double sintering is carried out, makes S in the molten gap infiltered between product crystal under the action of high temperature, together
When part S the compound to form S is combined with Fe；
In the double sintering, under the protective atmosphere of nitrogen and hydrogen, it is sintered with 600 DEG C of temperature.
2. the manufacturing method of ferrous based powder metallurgical high temperature resistant according to claim 1 not oiliness bearing, which is characterized in that
It is further comprising the steps of before first sintering：
Batch mixing：Graphite powder, zinc stearate, Cosan and iron powder are mixed；
The compacting of blank：The raw material mixed is pressed into blank；
The compacting of sulphur infiltration block：The Cosan proportional with the weight of single blank is pressed into sulphur infiltration block.
3. the manufacturing method of ferrous based powder metallurgical high temperature resistant according to claim 1 not oiliness bearing, which is characterized in that
After double sintering, shaping is further included, double sintering carries out deburring shaping after coming out of the stove so that product size reaches layout design
It is required that.
4. the manufacturing method of ferrous based powder metallurgical high temperature resistant according to claim 2 not oiliness bearing, which is characterized in that institute
It states in batch mixing, the weight percent of graphite powder is 1-3%, and the weight percent of zinc stearate is 0.4-0.8%, the weight of Cosan
Percentage is 0.4-0.6%, and surplus is iron powder.
5. the manufacturing method of ferrous based powder metallurgical high temperature resistant according to claim 2 not oiliness bearing, which is characterized in that institute
In the compacting for stating blank, suppressed by the density of 5.8-6.2g/cm3.
6. a kind of ferrous based powder metallurgical high temperature resistant not oiliness bearing, by described in any one in claim 2 or 4 or 5
Ferrous based powder metallurgical high temperature resistant not the manufacturing method of oiliness bearing and obtain, it is characterised in that：The graphite powder is 399 flaky graphites
Powder.
7. ferrous based powder metallurgical high temperature resistant according to claim 6 not oiliness bearing, it is characterised in that：The iron powder is 80
Mesh reduced iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645959.XA CN106077667B (en) | 2016-08-09 | 2016-08-09 | Ferrous based powder metallurgical high temperature resistant not oiliness bearing and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645959.XA CN106077667B (en) | 2016-08-09 | 2016-08-09 | Ferrous based powder metallurgical high temperature resistant not oiliness bearing and its manufacturing method |
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| Publication Number | Publication Date |
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| CN106077667A CN106077667A (en) | 2016-11-09 |
| CN106077667B true CN106077667B (en) | 2018-06-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109628848A (en) * | 2018-12-28 | 2019-04-16 | 浙江江兴汽车检测设备有限公司 | A kind of Retarder dilval magnetic conductive board and preparation method thereof |
| CN110735106B (en) * | 2019-10-31 | 2021-09-24 | 合肥波林新材料股份有限公司 | Iron-based sintered vulcanized material and preparation method thereof, iron-based side plate and oil distribution disc |
| CN111001813B (en) * | 2019-12-28 | 2022-02-18 | 合肥波林新材料股份有限公司 | High-antifriction iron-based vulcanized powder metallurgy oil-retaining bearing material and preparation method and application thereof |
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| CN103820738A (en) * | 2014-02-28 | 2014-05-28 | 江苏大学 | WSe2-containing Fe-based high-temperature self-lubricating spherical plain bearing and preparation method thereof |
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| Publication number | Publication date |
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| CN106077667A (en) | 2016-11-09 |
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Denomination of invention: Iron based powder metallurgy high-temperature resistant and oil-free bearings and their manufacturing methods Effective date of registration: 20231228 Granted publication date: 20180615 Pledgee: Zhejiang Tailong commercial bank Limited by Share Ltd. Quzhou Kecheng branch Pledgor: ZHEJIANG JINGYU TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2023980073980 |