CN102925807A - Powder metallurgy iron-based material suitable for high speed boring and preparation method - Google Patents
Powder metallurgy iron-based material suitable for high speed boring and preparation method Download PDFInfo
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- CN102925807A CN102925807A CN2012104181702A CN201210418170A CN102925807A CN 102925807 A CN102925807 A CN 102925807A CN 2012104181702 A CN2012104181702 A CN 2012104181702A CN 201210418170 A CN201210418170 A CN 201210418170A CN 102925807 A CN102925807 A CN 102925807A
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- iron
- powder metallurgy
- based material
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- high speed
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 63
- 239000000463 material Substances 0.000 title claims abstract description 58
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 14
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims abstract description 14
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 14
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000007669 thermal treatment Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003754 machining Methods 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 abstract description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000003245 working effect Effects 0.000 description 6
- 229910052582 BN Inorganic materials 0.000 description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000010451 perlite Substances 0.000 description 4
- 235000019362 perlite Nutrition 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
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Abstract
The invention discloses a powder metallurgy iron-based material suitable for high speed boring and a preparation method. The powder metallurgy iron-based material comprises the following raw materials in percentage by weight: 1-2% of copper, 1-2% of manganese sulfide, 0.5-1% of molybdenum disulfide, 0.3% of calcium fluoride, 0.3% of magnesium fluoride, 0.6-0.8% of graphite, and the balance of iron, wherein the iron, the copper and the graphite are added in the form of elemental powder, while the manganese sulfide, the molybdenum disulfide, the calcium fluoride and the magnesium fluoride are added in the form of compounds. The preparation method comprises the following three steps of mixing, molding and sintering heat treatment. According to the invention, the preparation method is simple and feasible, the prepared powder metallurgy iron-based material has good high-speed fine machining properties and mechanical properties and can meet requirements of an existing high-speed boring machine tool on the machining surface quality and the use of a cutter, and the use requirements of related household appliances on sliding bearing part products. Due to the application of the invention, the purpose of replacing grinding with boring can be realized, the production cost can be reduced significantly, and the machining surface quality can be improved. The invention is suitable for industrial popularization and application.
Description
Technical field
The present invention relates to a kind of Properties of Powder Metallurgy Iron-based Material and preparation method who is applicable to the high speed boring processing.Belong to the mmaterial preparing technical field.
Background technology
Along with the develop rapidly of powder metallurgical technique technology, the powder metallurgy iron based articles has been widely used in each field such as automobile, motorcycle, household electrical appliances, and accuracy requirement is also more and more higher.For guaranteeing accuracy requirement, often adopt ground finish on the technique, but this method efficient is very low, manufacturing cost is high.The modern crafts method often replaces grinding with high speed (rotating speed 12000-14000r/min) boring and reaches the purpose that reduces cost.High speed boring efficient high (processing φ 20 * 50mm axle sleeve single-piece only need 3-5 second), precision are high, and (roughness Rz≤3.2um), every data reach or have surpassed the precision of ground finish for circularity 0.002-0.004mm, linearity≤0.003mm.Yet this working method is not able to widespread use always in ordinary powder metallurgy iron based articles, it mainly is because there is the hole of volume percent 10-20% in ordinary powder metallurgy iron base material matter, in the use procedure of high speed boring processing, tipping and accelerated wear test very easily occur owing to being subject to the effect of high speed fine motion impact in processing cutter grain cutting edge position, thereby cause ordinary powder metallurgy iron base material matter to show the poor characteristics of machinability, even if adopt the cubic boron nitride cutter grain life-span also to only have 3-5 spare.By researching and developing a kind of Properties of Powder Metallurgy Iron-based Material that is applicable to the high speed boring processing, help to solve the powder metallurgy iron base product under the high speed boring processing condition the suface processing quality problem and cutter life problem, realize with boring for mill simultaneously, enhance productivity, significantly reduce manufacturing cost.
Summary of the invention
First technical problem to be solved by this invention provides a kind of Properties of Powder Metallurgy Iron-based Material that is applicable to the high speed boring processing.
Second technical problem to be solved by this invention provides a kind of preparation method who is applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing.
The present invention is applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, comprises that following compositions in weight percentage forms:
Copper 1-2,
Manganese sulfide 1-2,
Molybdenumdisulphide 0.5-1,
Calcium Fluoride (Fluorspan) 0.3,
Magnesium fluoride 0.3,
Graphite 0.6-0.8, surplus is iron.
The present invention is applicable to the preparation method of the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, comprises the steps:
The first step: batching
By alloy compositions proportioning weighing iron, copper, manganese sulfide, molybdenumdisulphide, Calcium Fluoride (Fluorspan), magnesium fluoride, the graphitic composition material of design, the 0.7-0.9% according to the material gross weight adds Zinic stearas in addition simultaneously, and Zinic stearas removes in the sintering heat treatment process; Described iron, copper and graphite constituent element add with the form of simple substance powder, and described manganese sulfide, molybdenumdisulphide, Calcium Fluoride (Fluorspan) and magnesium fluoride add with compound form;
Second step: batch mixing, moulding
Load weighted each mixing of materials is even, insert in the punching block, obtaining slug press with the compacting of the pressing pressure of 500～700MPa, dwell time 1-3 second;
The 3rd step: sintering thermal treatment
In the cracked ammonium atmosphere, slug press is heated to 1050 ℃-1150 ℃, be incubated 0.5-1.5 hour, then 800-900 ℃ of insulation 05-1.5 hour, cool to the furnace below 200 ℃ and come out of the stove, obtain the Properties of Powder Metallurgy Iron-based Material sintered body.
The present invention is applicable to the preparation method of the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, and described iron is crossed 100 mesh sieves; Described copper is crossed 200 mesh sieves; Described graphite mean particle size is 20 μ m; Described manganese sulfide, molybdenumdisulphide, Calcium Fluoride (Fluorspan) and magnesium fluoride are all crossed 300 mesh sieves.
The present invention is applicable to the preparation method of the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, and described batch mixing carries out in the V-type mixer, mixing time 60-90 minute.
The present invention is applicable to the preparation method of the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, and in the 3rd step, rate of heating is per minute 8-10 ℃; Furnace cooling speed is per minute 6-8 ℃.
The present invention is applicable to the preparation method of the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, and the Properties of Powder Metallurgy Iron-based Material sintered body density that makes is at 6.85-6.95g/cm
3
Solid lubricant manganese sulfide and molybdenumdisulphide content are higher in the Properties of Powder Metallurgy Iron-based Material of the present invention, can in high-speed machining process, form solid lubricant film, Calcium Fluoride (Fluorspan) and magnesium fluoride also have the effect of the cutting of helping, can offset to a great extent the negative influence of existing hole in the P/m Iron Base material, reduce the wearing and tearing of cutter grain, thereby high-speed cutting performance is excellent; Simultaneously, Properties of Powder Metallurgy Iron-based Material density of the present invention is at 6.85-6.95g/cm
3Between, mechanical property is moderate.Material of the present invention adopts the powder metallurgy technology preparation, can save material, and is suitable for scale production, low cost of manufacture.The present invention is owing to adopting said components proportioning and preparation method, prepared material contains well-proportioned composition constituent element, the tissue distribution such as ferrite, perlite, sulfide, fluorochemical are even, with respect to a lot of other Properties of Powder Metallurgy Iron-based Materials, cutter grain lubricating condition is good and the fine motion gouging abrasion is less in the High Speed Machining process, so its high-speed cutting performance has and significantly improves and manufacturing cost remains basically stable.
The present invention has the following advantages: have reliable and stable high speed boring processing performance, significantly tool life significantly cuts down finished cost.
In sum, a kind of Properties of Powder Metallurgy Iron-based Material that is applicable to the high speed boring processing of the present invention's preparation has excellent high speed boring processing performance and moderate mechanical property, its preparation method simple possible, the material that makes can satisfy the processing request of existing high speed boring machine tool and realize that the associated appliance product is to the service requirements of sliding surface bearing type component product.
Description of drawings
Accompanying drawing 1 is the metallograph of the Properties of Powder Metallurgy Iron-based Material of the embodiment of the invention 1 preparation;
Accompanying drawing 2 is metallographs of the Properties of Powder Metallurgy Iron-based Material of the embodiment of the invention 2 preparations;
Accompanying drawing 3 is metallographs of the Properties of Powder Metallurgy Iron-based Material of the embodiment of the invention 3 preparations;
Can find out from accompanying drawing 1, the Properties of Powder Metallurgy Iron-based Material heterogeneous microstructure of embodiment 1 preparation is: ferrite, perlite, sulfide and hole.
Can find out from accompanying drawing 2, the Properties of Powder Metallurgy Iron-based Material heterogeneous microstructure of embodiment 2 preparations is: ferrite, perlite, sulfide and hole.
Can find out from accompanying drawing 3, the Properties of Powder Metallurgy Iron-based Material heterogeneous microstructure of embodiment 3 preparations is: ferrite, perlite, sulfide and hole.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
Prepare a kind of Properties of Powder Metallurgy Iron-based Material that is applicable to the high speed boring processing, wherein: iron 96wt%, copper 1wt%, manganese sulfide 1wt%, molybdenumdisulphide 0.8wt%, Calcium Fluoride (Fluorspan) 0.3wt%, magnesium fluoride 0.3wt%, graphite 0.6wt%.Its preparation technology comprises the steps: load weighted each material was dropped in V-type mixer mixing time 60 minutes; Slug press in punching block, pressing pressure 500MPa, 3 seconds dwell times; In the cracked ammonium atmosphere, rate of heating be per minute 8-10 ℃ with slug press from room temperature intensification homogeneous heating to 1050 ℃ insulation 1 hour, then 800-900 ℃ of insulation 1 hour, evenly be cooled to below 200 ℃ afterwards and come out of the stove, obtain the sinter powder metal iron.
The performance of the sinter powder metal iron of the present embodiment preparation: density 6.90g/cm
3, hardness 70-90HB, tensile strength 280-320MPa; The high speed boring processing is functional, adopt cubic boron nitride cutter grain to add man-hour, measuring the material surface roughness by roughmeter is Rz2.0-2.8 μ m, this material is made Φ 25 * Φ 18 * 50mm axle sleeve carry out the single depth of cut when being the endoporus high speed boring of 0.10mm, the cutter grain can reach 580 axle sleeves work-ing life, can satisfy the surface quality requirement of high speed boring processing tool setting grain work-ing life and machined surface fully.
Embodiment 2
Prepare a kind of Properties of Powder Metallurgy Iron-based Material that is applicable to the high speed boring processing, wherein: iron 95wt%, copper 2wt%, manganese sulfide 1wt%, molybdenumdisulphide 0.8wt%, Calcium Fluoride (Fluorspan) 0.3wt%, magnesium fluoride 0.3wt%, graphite 0.6wt%.Its preparation technology comprises the steps: load weighted each material was dropped in V-type mixer mixing time 60 minutes; Slug press in punching block, pressing pressure 600MPa, 3 seconds dwell times; In the cracked ammonium atmosphere, rate of heating be per minute 8-10 ℃ with slug press from room temperature intensification homogeneous heating to 1100 ℃ insulation 1 hour, then 800-900 ℃ of insulation 1 hour, evenly be cooled to below 200 ℃ afterwards and come out of the stove, obtain the sinter powder metal iron.
The performance of the sinter powder metal iron of the present embodiment preparation: density 6.95g/cm
3, hardness 80-100HB, tensile strength 320-380MPa; The high speed boring processing is functional, adopt cubic boron nitride cutter grain to add man-hour, measuring the material surface roughness by roughmeter is Rz 1.8-2.6 μ m, this material is made Φ 25 * Φ 18 * 50mm axle sleeve carry out the single depth of cut when being the endoporus high speed boring of 0.10mm, the cutter grain can reach 630 axle sleeves work-ing life, can satisfy the surface quality requirement of high speed boring processing tool setting grain work-ing life and machined surface fully.
Embodiment 3
Prepare a kind of Properties of Powder Metallurgy Iron-based Material that is applicable to the high speed boring processing, wherein: iron 94wt%, copper 2wt%, manganese sulfide 2wt%, molybdenumdisulphide 0.6wt%, Calcium Fluoride (Fluorspan) 0.3wt%, magnesium fluoride 0.3wt%, graphite 0.8wt%.Its preparation technology comprises the steps: load weighted each material was dropped in V-type mixer mixing time 90 minutes; Slug press in punching block, pressing pressure 700MPa, 3 seconds dwell times; In the cracked ammonium atmosphere, rate of heating be per minute 8-10 ℃ with slug press from room temperature intensification homogeneous heating to 1050 ℃ insulation 1 hour, then 800-900 ℃ of insulation 1 hour, evenly be cooled to below 200 ℃ afterwards and come out of the stove, obtain the sinter powder metal iron.
The performance of the sinter powder metal iron of the present embodiment preparation: density 6.85g/cm
3, hardness 70-90HB, tensile strength 270-310MPa; The high speed boring processing is functional, adopt cubic boron nitride cutter grain to add man-hour, measuring the material surface roughness by roughmeter is Rz 1.7-2.4 μ m, this material is made Φ 25 * Φ 18 * 50mm axle sleeve carry out the single depth of cut when being the endoporus high speed boring of 0.10mm, the cutter grain can reach 680 axle sleeves work-ing life, can satisfy the surface quality requirement of high speed boring processing tool setting grain work-ing life and machined surface fully.
Claims (6)
1. be applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, comprise that following compositions in weight percentage forms:
Copper 1-2,
Manganese sulfide 1-2,
Molybdenumdisulphide 0.5-1,
Calcium Fluoride (Fluorspan) 0.3,
Magnesium fluoride 0.3,
Graphite 0.6-0.8, surplus is iron.
2. be applicable to the preparation method of the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, comprise the steps:
The first step: batching
By alloy compositions proportioning weighing iron, copper, manganese sulfide, molybdenumdisulphide, Calcium Fluoride (Fluorspan), magnesium fluoride, the graphitic composition material of design, the 0.7-0.9% according to the material gross weight adds Zinic stearas in addition simultaneously, and Zinic stearas removes in the sintering heat treatment process; Described iron, copper and graphite constituent element add with the form of simple substance powder, and described manganese sulfide, molybdenumdisulphide, Calcium Fluoride (Fluorspan) and magnesium fluoride add with compound form;
Second step: batch mixing, moulding
Load weighted each mixing of materials is even, insert in the punching block, obtaining slug press with the compacting of the pressing pressure of 500～700MPa, dwell time 1-3 second;
The 3rd step: sintering thermal treatment
In the cracked ammonium atmosphere, slug press is heated to 1050 ℃-1150 ℃, be incubated 0.5-1.5 hour, then 800-900 ℃ of insulation 05-1.5 hour, cool to the furnace below 200 ℃ and come out of the stove, obtain the Properties of Powder Metallurgy Iron-based Material sintered body.
3. the preparation method who is applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing according to claim 2, it is characterized in that: described iron is crossed 100 mesh sieves; Described copper is crossed 200 mesh sieves; Described graphite mean particle size is 20 μ m; Described manganese sulfide, molybdenumdisulphide, Calcium Fluoride (Fluorspan) and magnesium fluoride are all crossed 300 mesh sieves.
4. according to claim 2 or the 3 described preparation methods that are applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, it is characterized in that: described batch mixing carries out in the V-type mixer, mixing time 60-90 minute.
5. the preparation method who is applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing according to claim 4 is characterized in that: in the 3rd step, rate of heating is per minute 8-10 ℃; Furnace cooling speed is per minute 6-8 ℃.
6. the described preparation method who is applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing of any one according to claim 2-5, it is characterized in that: the Properties of Powder Metallurgy Iron-based Material sintered body density that makes is at 6.85-6.95g/cm
3
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357864A (en) * | 2013-06-21 | 2013-10-23 | 马鞍山市恒毅机械制造有限公司 | Iron-based powder metallurgy material applicable to high-speed boring and preparation method thereof |
| CN105081309A (en) * | 2015-08-24 | 2015-11-25 | 北京科技大学 | Method for preparing iron-based powder metallurgy material containing molybdenum |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006089829A (en) * | 2004-09-27 | 2006-04-06 | Jfe Steel Kk | Iron-base powdery mixture for powder metallurgy |
| JP3784276B2 (en) * | 2001-05-14 | 2006-06-07 | 日立粉末冶金株式会社 | Free-cutting sintered member and manufacturing method thereof |
| JP2007169713A (en) * | 2005-12-21 | 2007-07-05 | Jfe Steel Kk | Iron-based mixed powder for powder metallurgy |
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2012
- 2012-10-26 CN CN201210418170.2A patent/CN102925807B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3784276B2 (en) * | 2001-05-14 | 2006-06-07 | 日立粉末冶金株式会社 | Free-cutting sintered member and manufacturing method thereof |
| JP2006089829A (en) * | 2004-09-27 | 2006-04-06 | Jfe Steel Kk | Iron-base powdery mixture for powder metallurgy |
| JP2007169713A (en) * | 2005-12-21 | 2007-07-05 | Jfe Steel Kk | Iron-based mixed powder for powder metallurgy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357864A (en) * | 2013-06-21 | 2013-10-23 | 马鞍山市恒毅机械制造有限公司 | Iron-based powder metallurgy material applicable to high-speed boring and preparation method thereof |
| CN103357864B (en) * | 2013-06-21 | 2016-12-28 | 安徽吉思特智能装备有限公司 | A kind of Properties of Powder Metallurgy Iron-based Material being applicable to high speed boring processing and preparation method thereof |
| CN105081309A (en) * | 2015-08-24 | 2015-11-25 | 北京科技大学 | Method for preparing iron-based powder metallurgy material containing molybdenum |
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Denomination of invention: Powder metallurgy iron-based material suitable for high speed boring and preparation method Effective date of registration: 20180920 Granted publication date: 20141105 Pledgee: Bank of Changsha, Limited by Share Ltd, Yiyang branch Pledgor: Hunan Yi Lin Materials Technology Co. Ltd. Registration number: 2018430000069 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191104 Granted publication date: 20141105 Pledgee: Bank of Changsha, Limited by Share Ltd, Yiyang branch Pledgor: Hunan Yi Lin Materials Technology Co. Ltd. Registration number: 2018430000069 |