CN1804097A - Self-lubricating alloy material and method for preparing the same - Google Patents
Self-lubricating alloy material and method for preparing the same Download PDFInfo
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- CN1804097A CN1804097A CN 200610042226 CN200610042226A CN1804097A CN 1804097 A CN1804097 A CN 1804097A CN 200610042226 CN200610042226 CN 200610042226 CN 200610042226 A CN200610042226 A CN 200610042226A CN 1804097 A CN1804097 A CN 1804097A
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Abstract
The disclosed preparation method for self-lubricating alloy material comprises mainly: adjusting the sulfur content to improve product optimal lubrication effect, adding other alloy elements to reinforce ferrite. This product has strong wear-resist capacity to prolong its lifetime, and can also be prepared by powder metallurgy sintering with low cost.
Description
Technical field
The invention belongs to field of metallurgy, relate in particular to a kind of self-lubricating ferrous alloy material and preparation method thereof.
Background technology
Self-lubricating alloy material is extensive use of in metallurgy industry, and for example the self-oiling bearing in continuous caster and other relevant members must adopt self-lubricating material.Because mostly above-mentioned member is to work under the condition of high temperature, big load, many dust, the existing self-lubricating alloy material life-span is shorter, promptly need change once as the self-oiling bearing 2-3 in the continuous caster days, this not only causes production cost higher, cause the waste of ample resources, and frequently replacing is wasted time and energy, and influences working efficiency.At present, the preparation of self-lubricating material mostly is to adopt the method for melt-metallurgic to produce, and this method is owing to be subjected to the restriction of smelting condition, and each component chemical changes comparatively complicated in the production process, production process is not easy control, and the adjustment of element is difficult to adjust to optimum regime.
Summary of the invention
One of purpose of the present invention is to provide that a kind of heat resistance height, wear resistance are good, the self-lubricating alloy material of long service life;
Two of purpose of the present invention is to provide a kind of method for preparing this self-lubricating material.
Self-lubricating alloy material of the present invention, the weight percent of its each chemical ingredients consists of: carbon: 0.8-1.5%, manganese: 0.2-0.5%, sulphur: 2-7%, chromium: 1-3%, copper: 1-3%, molybdenum: 0.5-5%, cobalt: 1-3%, nickel 0.01-7%, surplus is iron and a small amount of unavoidable impurities.
Self-lubricating alloy material of the present invention is to adopt powder metallurgy process to make, and each component is powder in the material, comprises the steps:
(1), batch mixing is according to chemical composition prepared burden and abundant mixing, wherein iron is granularity 100 purpose reduced iron powders, graphite particle size is that 300 orders, molybdenum powder granularity are that 400 orders, chromium powder granularity are that 300 orders, copper powder granularity are 300 orders, the SULPHUR POWDER granularity is 300 orders.
(2), by adorning moulds according to want member difference, pressing pressure is 6-7t/cm with mixed material in compacting
2, to suppress, pressed density is greater than 6 gram/cubic centimetres.
(3), sintering puts into electric furnace with the pressed compact that makes in the step (2), and the anti-oxidation of logical protection gas, preheating temperature 700-900 degree centigrade, 1180 degrees centigrade of sintering temperatures are incubated 2.5 hours, are cooled to room temperature then.
Now the concrete effect in this invention is described in detail according to each element: carbon (graphite), main component among the present invention is an iron, adopt 100 order reduced iron powders, graphite part in sintering process forms austenite with the iron reaction, austenite is basic phase, and graphite is after sintering is finished, and some is unbound state, this part graphite also is good lubricant, and the present invention is controlled at graphite between the 0.8-1.5%.
Manganese and chromium can reinforced ferrites behind sintering, improve the heat resistance of material, and chromium can also play oxidation resistant effect, the present invention with manganese be controlled at 0.2-0.5%, chromium is controlled between the 1-3% and is advisable.
Cobalt is in sintering process and the complete solid solution of iron, and further reinforced ferrite improves the heat resistance of material greatly, and the present invention is controlled at cobalt between 1-3%.
Molybdenum can further play reinforced ferrite and improve the material heat resistance in sintering process effect, simultaneously in 1180 degrees centigrade of sintering processes, generate molybdenumdisulphide with the sulphur effect, be evenly distributed in the material, molybdenumdisulphide is a kind of good lubricant, increased the lubricated composition of material, molybdenum of the present invention is controlled between the 0.5-5%.
Copper because of fusing point hang down in sintering process it can improve material compactness, thereby can improve the hardness of material, and can increase the heat conductivility of material, be beneficial to heat radiation, improve the work-ing life of part, the present invention is controlled at it between 1-3%.
Sulphur is principal element of the present invention, part and iron generate iron sulphide in sintering process, iron sulphide is a kind of good lubricant, it is the primary lubricant composition of this material, also have part sulphur can in sintering process, embed uniformly in the hole of material behind the sintering, the compactness of strongthener, and sulphur is with low cost, utilize powder metallurgy technology it can be controlled within the optimum range, the present invention is controlled at sulphur between the 2-7.
Main ingredient of the present invention in addition all adopts the thinner powder of granularity, can guarantee the compactness behind the material sintering.
The self-lubricating alloy material that adopts chemical ingredients of the present invention and preparation method to make, it mainly is the best lubricating effect that the content of adjusting sulphur in the material improves product, add other an amount of alloying elements simultaneously, the heat resistance of reinforced ferrite and raising material, dense structure's property is good, and wear-resistant ability is strong, thereby make greatly prolong its work-ing life, adopt powder metallurgy sintered method to make in addition, technology is simple, and facility investment is few.
Embodiment
The Chemical Composition that has provided 5 embodiment of the present invention in the table 1 is formed.
Table 1
| Example | Iron and unavoidable impurities | Graphite % | Manganese % | Sulphur % | Chromium % | Copper % | Molybdenum % | Cobalt % | Nickel % |
| 1 | Surplus | 1 | 0.2 | 3 | 1 | 1 | 0.5 | 1 | 0.1 |
| 2 | Surplus | 1.5 | 0.5 | 6 | 3 | 3 | 4.5 | 3 | 0.1 |
| 3 | Surplus | 0.8 | 0.3 | 4 | 2 | 2 | 3 | 1.5 | 3 |
| 4 | Surplus | 1.2 | 0.4 | 7 | 1.5 | 1.5 | 5 | 2 | 4 |
| 5 | Surplus | 1 | 0.2 | 5 | 2 | 1.5 | 4 | 1 | 2 |
Above-mentioned self-lubricating metal material can adopt powder metallurgy process to make, and each component is powder in the material, comprises the steps:
(1), batch mixing is according to chemical composition prepared burden and abundant mixing, wherein iron is granularity 100 purpose reduced iron powders, graphite particle size is that 300 orders, molybdenum powder granularity are that 400 orders, chromium powder granularity are that 300 orders, copper powder granularity are 300 orders, the SULPHUR POWDER granularity is 300 orders.
(2), by adorning mould according to want member difference, pressing pressure is 6-7t/cm with mixed material in compacting
2, pressed density is finished in compacting should be greater than 6 gram/cubic centimetres.
(3), sintering is put into electric furnace with the pressed compact that makes in the step (2); and feed the anti-oxidation of protection gas such as decomposed ammonia; preheating temperature is controlled at 700-900 degree centigrade; 1180 degrees centigrade of sintering temperatures; be incubated 2.5 hours; be cooled to room temperature then, can make finished product through technologies such as deburring, shapings again.
Its finished product hardness is between HB100-150, and crushing strength is qualified greater than 160Mpa.
The Hardness Control of product is between HB100-150 in sintering process, because this parts of bearings is to work under the condition that water is directly lowered the temperature, work under bad environment, easily slagging scorification fouling, the running position is stuck easily after hardness height, the fouling, Hardness Control between HB100-150, the on-stream effect that can play automatic desludging of parts.
Among the present invention, the content of impurity such as silicon and phosphorus should be controlled in the reasonable range.
The continuous caster self-oiling bearing that adopts this self-lubricating alloy material to make can reach more than 400 hours 500 degrees centigrade of following work-ing lifes, and self-oiling bearing in the past can only be with 72 hours, and greatly prolong work-ing life.
Claims (4)
1, a kind of self-lubricating alloy material, it is characterized in that containing the chemical ingredients of following weight percent: carbon: 0.8-1.5%, manganese: 0.2-0.5%, sulphur: 2-7%, chromium: 0.1-3%, copper: 1-3%, molybdenum: 0.5-5%, cobalt: 1-3%, nickel 0.01-7%, surplus is iron and a small amount of unavoidable impurities.
2, self-lubricating alloy material according to claim 1, it is characterized in that containing the chemical ingredients of following weight percent: carbon: 1%, manganese: 0.2%, sulphur: 3%, chromium: 0.1%, copper: 1%, molybdenum: 0.5%, cobalt: 1%, nickel 0.01-7%, surplus is iron and a small amount of unavoidable impurities.
3, self-lubricating alloy material according to claim 1, it is characterized in that containing the chemical ingredients of following weight percent: carbon: 1.5%, manganese: 0.5%, sulphur: 6%, chromium: 3%, copper: 3%, molybdenum: 4.5%, cobalt: 3%, nickel 0.01-7%, surplus is iron and a small amount of unavoidable impurities.
4, the preparation method of a kind of claim 1 or 2 or 3 described self-lubricating materials adopts powder metallurgical technique, and it includes following steps:
(1), batch mixing is according to chemical composition prepared burden and abundant mixing, wherein iron is granularity 100 purpose reduced iron powders, graphite particle size is that 300 orders, molybdenum powder granularity are that 400 orders, chromium powder granularity are that 300 orders, copper powder granularity are 300 orders, the SULPHUR POWDER granularity is 300 orders.
(2), by adorning moulds according to want member difference, pressing pressure is 6-7t/cm with mixed material in compacting
2, to suppress, pressed density is greater than 6 gram/cubic centimetres.
(3), sintering puts into electric furnace with the pressed compact that makes in the step (2), and the anti-oxidation of logical protection gas, preheating temperature 700-900 degree centigrade, 1180 degrees centigrade of sintering temperatures are incubated 2.5 hours, are cooled to room temperature then.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100422263A CN100389223C (en) | 2006-01-24 | 2006-01-24 | Self-lubricating alloy material and method for preparing the same |
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| CNB2006100422263A CN100389223C (en) | 2006-01-24 | 2006-01-24 | Self-lubricating alloy material and method for preparing the same |
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| CN1804097A true CN1804097A (en) | 2006-07-19 |
| CN100389223C CN100389223C (en) | 2008-05-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994914A (en) * | 2011-09-17 | 2013-03-27 | 中国科学院兰州化学物理研究所 | Iron-molybdenum-graphite series high-temperature self-lubricating composite material and preparation method of same |
| CN103667914A (en) * | 2012-09-06 | 2014-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Powder metallurgy material, cross slip ring and manufacturing method of cross slip ring |
| CN106077627A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | A kind of preparation method of sliding bearing |
| CN112654446A (en) * | 2018-08-29 | 2021-04-13 | 昭和电工材料株式会社 | Iron-based sintered sliding member and method for producing same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103830C (en) * | 2000-07-10 | 2003-03-26 | 高福池 | Solid self-lubricating wear-resisting alloy cast material |
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2006
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994914A (en) * | 2011-09-17 | 2013-03-27 | 中国科学院兰州化学物理研究所 | Iron-molybdenum-graphite series high-temperature self-lubricating composite material and preparation method of same |
| CN102994914B (en) * | 2011-09-17 | 2015-04-22 | 中国科学院兰州化学物理研究所 | Iron-molybdenum-graphite series high-temperature self-lubricating composite material and preparation method of same |
| CN103667914A (en) * | 2012-09-06 | 2014-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Powder metallurgy material, cross slip ring and manufacturing method of cross slip ring |
| CN103667914B (en) * | 2012-09-06 | 2016-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | The making method of mmaterial, cross slip-ring and this cross slip-ring |
| CN106077627A (en) * | 2016-08-27 | 2016-11-09 | 宁波市鄞州新华仪表电机配件厂 | A kind of preparation method of sliding bearing |
| CN112654446A (en) * | 2018-08-29 | 2021-04-13 | 昭和电工材料株式会社 | Iron-based sintered sliding member and method for producing same |
| US20210316364A1 (en) * | 2018-08-29 | 2021-10-14 | Showa Denko Materials Co., Ltd. | Iron-based sintered sliding material and method for producing the same |
| CN112654446B (en) * | 2018-08-29 | 2023-09-29 | 株式会社力森诺科 | Iron-based sintered sliding member and method for manufacturing same |
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| Publication number | Publication date |
|---|---|
| CN100389223C (en) | 2008-05-21 |
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