CN1003721B - Spinning powder metallurgy ring material and manufacturing method thereof - Google Patents
Spinning powder metallurgy ring material and manufacturing method thereof Download PDFInfo
- Publication number
- CN1003721B CN1003721B CN87105949.5A CN87105949A CN1003721B CN 1003721 B CN1003721 B CN 1003721B CN 87105949 A CN87105949 A CN 87105949A CN 1003721 B CN1003721 B CN 1003721B
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- China
- Prior art keywords
- rings
- manufacturing
- alloy
- powder metallurgy
- powder
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000009987 spinning Methods 0.000 title claims abstract description 5
- 239000000463 material Substances 0.000 title claims description 4
- 238000004663 powder metallurgy Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 8
- 229910017112 Fe—C Inorganic materials 0.000 claims abstract description 7
- 229910017263 Mo—C Inorganic materials 0.000 claims abstract description 5
- 229910002059 quaternary alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
- 229910002551 Fe-Mn Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
The invention relates to a Fe-Mn-Mo-C quaternary alloy for manufacturing a spinning powder metallurgy ring and a manufacturing method thereof. Compared with Fe-C alloy steel, the wear loss in 40 hours is reduced by 62%, the fatigue life is prolonged by 96%, and the service life of the ring is prolonged by 1-2 times due to reasonable selection of components and processes.
Description
The present invention relates to a kind of Fe-Mn-Mo-C quaternary alloy and manufacture method that is used to make the spinning powder smelting ring.
Traditional powder metallurgy ring material is a Fe-C alloy powder smelting ring, and the greatest problem of existence is to use the life-span low, the Fe-C alloy powder smelting ring of China, and the life-span that is used for wool spinning is 6 months, being used for chemical fibre is 3 months.According to wear morphology and force analysis, find that the wearing and tearing of rings mainly are that contact fatigue is peeled off to rings.
Japan has carried out big quantity research to improving powder smelting ring service life, and that related to the present invention is the clear 51-41844 of Japan Patent, improves the ABRASION RESISTANCE of rings with the method for adding hard phase BN; The clear 54-29968 of Japan Patent is with adding kollag MoS
2Reduce coefficient of friction, improve ABRASION RESISTANCE by this.Add BN and can reduce the abrasion that causes because of sliding friction, but can not overcome fatigue flake, and BN costs an arm and a leg, this will make the rings cost improve; Add MoS
2Can reduce coefficient of friction, but generate Fes, Mns in sintering process, Fes and Mns are that brittle non-metal is mingled with, and easily produce micro-crack, will expand rapidly in case crackle forms, and therefore can not overcome fatigue flake.
Purpose of the present invention is intended to overcome above-mentioned deficiency, provides a kind of fatigue strength height, the alloy material that polishing machine is good.
The present invention realizes like this; On Fe-C alloy basis, add 0.1～4.0%
WtMn and 0.05～1.0%
WtMo constitutes the Fe-Mn-Mo-C quaternary alloy.
Mn adds with Fe-Mn intermediate alloy form, has avoided the oxidation of Mn, and Mn volatilizees part in sintering process, and the rings open pores is increased, and oil content improves, thereby the rings self-lubricating property is improved greatly; Mn can also promote Fe16N
2(α ") phase forming core folds highly dispersed Fe16N in martensite during tempering
2(α ") phase improves the contact fatigue life of alloy.Mo adds with metal M o form, adds Mo and can improve sintering activity, Fe particle bond strength is improved, and Mo is the same with Mn, can both improve quenching degree, reduces the hardness gradient at rings surface to center, and this also helps fatigue strength and improves.
In order to improve the connectedness of interparticle bond strength of Fe and internal void, also must control the granularity of powder, because coarse grain Fe powder sintering poor performance in the rings operation process, cracks along formed crystal boundary between the Fe particle easily, powder is meticulous, sintering activity is strong, can reduce the connectedness of internal void, influences the order lubricant effect, therefore, powder size should be controlled between-80 order～+ 400.
Green density should be controlled at 6.0～6.5g/cm.Density is low excessively, and finished product rings fatigue strength is low; Too high, finished product rings porosity is low, and self-lubricating effect is poor.
Sintering schedule is 1100～1200 ℃ * 30～120min, and temperature is low, the time is short, does not reach alloying and densification purpose; Temperature height, time are long, can cause the interconnected pore to reduce.Finished product rings density of the present invention is 6.3～6.8g/cm.
Rings with Fe-Mn-Mo-ZC alloy material of the present invention and the production of selection corresponding technological conditions, compare with at present general Fe-C alloy rings, open porosity improves 6.4%, superficial layer hardness improves 7.3%, it is the graph of relation of wearing-in period that 40 hours wear extenies reduce the 62%(accompanying drawing, and wherein 1 is the Fe-C alloy, and 2 is the Fe-Mn-Mo-C alloy), contact fatigue life improves 96%, improves 1-2 the actual life of rings doubly.
Claims (6)
1, a kind of with Fe-C be base be used to spin the material of powder smelting ring, it is characterized in that having added 0.1～4.0%
WtMn and 0.05～1.0%
WtMo constitutes the Fe-Mn-Mo-C quaternary alloy.
2, the method for the material manufacturing of spinning powder smelting ring according to claim 1 is characterized in that:
A.Mn adds with Fe-Mn intermediate alloy form, and Mo adds with metal M o form;
B. powder size is-80～+ 400 orders;
C. the green density of rings is 6.0～6.5g/cm
3, finished product rings density is 6.3～6.8g/cm
3;
D. rings pressed compact sintering schedule is 1100～1200 ℃ * 30～120Min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87105949.5A CN1003721B (en) | 1987-12-24 | 1987-12-24 | Spinning powder metallurgy ring material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87105949.5A CN1003721B (en) | 1987-12-24 | 1987-12-24 | Spinning powder metallurgy ring material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031264A CN1031264A (en) | 1989-02-22 |
| CN1003721B true CN1003721B (en) | 1989-03-29 |
Family
ID=4815524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87105949.5A Expired CN1003721B (en) | 1987-12-24 | 1987-12-24 | Spinning powder metallurgy ring material and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003721B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320184C (en) * | 2003-07-03 | 2007-06-06 | 顾晓冰 | Spinning steel ring for making track and base seat respectively and combined as one body |
| CN1526866B (en) * | 2003-09-20 | 2010-04-28 | 李丽华 | Ceramic ring |
| CN106077657B (en) * | 2016-06-01 | 2018-07-27 | 南通大学 | A kind of preparation method of anticorrosion antiwear rings |
-
1987
- 1987-12-24 CN CN87105949.5A patent/CN1003721B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1031264A (en) | 1989-02-22 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |