CN1322940C - Large section WCP/Fe-C composite material-nodular iron composite structure collars - Google Patents
Large section WCP/Fe-C composite material-nodular iron composite structure collars Download PDFInfo
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- CN1322940C CN1322940C CNB2004100605532A CN200410060553A CN1322940C CN 1322940 C CN1322940 C CN 1322940C CN B2004100605532 A CNB2004100605532 A CN B2004100605532A CN 200410060553 A CN200410060553 A CN 200410060553A CN 1322940 C CN1322940 C CN 1322940C
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Abstract
The present invention discloses a WC<P>/Fe-C composite material with heavy sections-a roll collar in a bult iron composite structure, which is composed of a working layer of the WC<P>/Fe-C composite material with high wear resistance and matrix alloy of bulb iron with a tough core segment. The matrix alloy of the bulb iron with the tough core segment has the following composition ranges: 3.0% to 3.8% of C, 2.0% to 2.8% of Si, less than 0.4% of Mn, 0.2% to 0.3% of Mo, 3% to 5% of Ni, 0.04% to 0.06% of Mg, 0.05% to 0.08% of RE, and less or equal to 0.03% of S and P. The size of eacg WC granule in the working layer of the surface composite material of the roll collar of the present invention is from 75 mu m to 200 mu m, and the volume fraction can be controlled from 50 vol % to 85 vol% according to the requirements of the conditions of utilization. The WC granules in the working layer of the surface composite material of the roll collar are even, and the thickness of the working layer of the composite material can be optionally controlled from 10mm to 30mm. The utilization rate of the working layer of the surface composite material of the roll collar is higher than 95 %, the matrix alloy of bulb iron with the tough core segment of the roll collar can be recycled, the roll collar is prepared by a centrifugal casting method with simple manufacturing process and low manufacture cost.
Description
Affiliated technical field
The present invention relates to a kind of big section WC
P/ Fe-C composite-magnesium iron composite construction collars.
Background technology
Along with metallurgical industry develops rapidly, the development of modern continuous casting---tandem rolling high speed is very fast.For example, the high speed of high-speed line, rolling bar, high-speed rod-rolling mill roll speed and bring up to 100 meter per seconds from 65 meter per seconds, and bar mill is brought up to 18 meter per seconds from 12 meter per seconds continuously.China's import, homemade high-speed rod-rolling mill production line by " 95 " end 60 surplus increase to present more than 100.Company representatives such as U.S. Morgan, German SMS, MDS, Italian Daneili, Britain AHslow world line bar equipment highest level, the highest speed of rolling of high-speed rod tandem mill has reached more than 140 meter per seconds, continuously rolling bar speed has reached more than 25 meter per seconds.Therefore, China's high-speed line bar mill high speed also has very big potentiality.But, realizing that one of high speed biggest obstacle is the attrition component of high-speed line bar mill---the production technology modernization of collars, because high-speed line bar mill collars is a wear-out part, consumption is big, the input cost height.Adopt powder metallurgic method to produce carbide roll ring, manufacturing equipment costliness, production cost height (550 yuans/kilogram) in producing at present.Therefore, press for a kind of low cost of research, high performance novel high-speed wire mill collars, its purpose is not reducing collars under service life, makes the cost of high-speed line, bar mill collars be reduced to original 1/3-1/2, has remarkable economical and social benefit.
Collars adopts composite construction usually at present, for example, and the worksheet surface layer of high chromium cast iron (steel) or high Cr-Ni infinitely chilled ductile cast iron and high tough core.But the high temperature abrasion resistance of this composite construction collars can not satisfy the requirement of wire and bar mill high speed.External late nineteen eighties, domestic the early 1990s, the high-speed rod-rolling mill collars of employing tungsten carbide particle (WC) and cobalt (Co) powder metallurgy, preparation cost is quite high, cost an arm and a leg (about 500-600 unit/kilogram), stock utilization extremely low (less than 30%) can not recycling; Simultaneously, be not suitable for producing the big collars of large-scale and middle active length.Middle nineteen nineties, Sweden Sandvik AB adopts OSPREY method jet deposition (spray deposition) to make high carbon high-speed steel finishing bar mill collars (external diameter 345mm, internal diameter 180mm, hardness HRC60), it costs an arm and a leg, for example, the Co price is 10 times of W, China Cr, Mo, V resource comparatively lack, and this complex process, are unfavorable for producing in enormous quantities.The early 1990s, Japan adopts high temperature insostatic pressing (HIP) HIP (hot isostatic pressing) manufactured wire finishing mill high carbon high-speed steel powder metallurgy roll
[5]Late nineteen nineties, China's Iron and Steel Research Geueral Inst is also studied with high temperature insostatic pressing (HIP) (HIP) manufactured high carbon high-speed steel powder metallurgy composite roll
[6]But the HIP method only is applicable to small-sized collars, and production cost is higher, apparatus expensive, manufacturing process complexity.
Summary of the invention
Purpose of the present invention promptly provides a kind of big section WC
P/ Fe-C composite-magnesium iron composite construction collars.Effectively reduce production costs, improve working surface wearability and core substrate performance.
The present invention realizes that the technical scheme that above-mentioned purpose is taked is: it strengthens the iron base composite material working lining by the high abrasion WC particle and tough core magnesium iron matrix alloy is formed, described core magnesium iron matrix alloy mass fraction scope is: 3.0～3.8%C, 2.0～2.8%Si,＜0.4%Mn, 0.2～0.3%Mo, 3.0～5.0%Ni, 0.04～0.06%Mg, 0.05～0.08%Re, S, P≤0.03%.
Described WC particle wild phase is of a size of 75-200 μ m.
Collars composite work layer performance of the present invention: hardness HRA79-85; Impact flexibility ak3-5J/cm
2Tensile strength sigma
b320-350MPa.Core matrix alloy performance: hardness HRA73-75; Impact flexibility ak8-13J/cm
2Tensile strength sigma
b600-800MPa; Compression strength 〉=3500MPa.
The present invention compares with other collars, and following advantage is arranged:
The thickness of collars composite surface material working lining can be according to instructions for use control arbitrarily between 10～30mm.
The WC particle volume fraction can require to be controlled at 50～85vol.% according to applying working condition in the collars composite surface material working lining.
WC particle is evenly distributed in the collars composite work layer.
Collars composite worksheet surface material utilization rate height (greater than 95%); But collars core magnesium iron matrix alloy recycling;
Collars adopts the centre spinning preparation, and technology is simple, low cost of manufacture.
Description of drawings
Fig. 1 is the radial section figure of composite collars of the present invention.
Fig. 2, Fig. 3 are WC in the collars composite layer of the present invention
PDistribution map.
Fig. 4 is collars core matrix figure of the present invention.
The specific embodiment
In conjunction with the accompanying drawings, it is as follows to provide embodiments of the invention:
Embodiment 1
Present embodiment strengthens the iron base composite material working lining by the high abrasion WC particle and tough core magnesium iron matrix alloy is formed, and described core magnesium iron matrix alloy composition range (mass fraction %) is 3.3C, 2.2Si,＜0.3Mn, 0.2Mo, 3.5Ni, 0.04Mg, 0.05RE ,≤0.03S, P.Described WC particle wild phase is of a size of 200 μ m.Its composite work layer performance: hardness HRA79; Impact flexibility ak 3.1J/cm
2Tensile strength sigma b319MPa.Core matrix alloy performance: hardness HRA73; Impact flexibility ak13J/cm
2Tensile strength sigma b600MPa; Compression strength 〉=3500MPa.
Embodiment 2
It is made up of present embodiment high abrasion WC particle enhancing iron base composite material working lining and tough core magnesium iron matrix alloy, and described core magnesium iron matrix alloy composition range (mass fraction %) is 3.5C, 2.5 Si,＜0.3Mn, 0.25Mo, 4.0Ni, 0.05Mg, 0.06RE ,≤0.03S, P.Described WC particle wild phase is of a size of 150 μ m.Its composite work layer performance: hardness HRA82; Impact flexibility ak4J/cm
2Tensile strength sigma b330MPa.Core matrix alloy performance: hardness HRA74; Impact flexibility ak10J/cm
2Tensile strength sigma b700MPa; Compression strength 〉=3600MPa.
Embodiment 3
It is made up of present embodiment high abrasion WC particle enhancing iron base composite material working lining and tough core magnesium iron matrix alloy, and described core magnesium iron matrix alloy composition range (mass fraction %) is 3.6C, 2.7Si,＜0.4Mn, 0.3Mo, 5.0Ni, 0.06Mg, 0.08RE ,≤0.03S, P.Described WC particle wild phase is of a size of 100 μ m.Its composite work layer performance: hardness HRA83; Impact flexibility ak4.5J/cm
2Tensile strength sigma
b350MPa.Core matrix alloy performance: hardness HRA75; Impact flexibility ak8.3J/cm
2Tensile strength sigma
b800MPa; Compression strength 〉=3600MPa.
Claims (2)
1, a kind of big section WC
P/ Fe-C composite-magnesium iron composite construction collars, it is characterized in that: this collars is by high abrasion WC
P/ Fe-C composite work layer and tough core magnesium iron matrix alloy are formed, described core magnesium iron matrix alloy mass fraction scope is: 3.0～3.8%C, 2.0～2.8%Si,＜0.4%Mn, 0.2～0.3%Mo, 3.0～5.0%Ni, 0.04～0.06%Mg, 0.05～0.08%Re, S, P≤0.03%.
2, big section WC according to claim 1
P/ Fe-C composite-magnesium iron composite construction collars is characterized in that: described high abrasion WC
PWC particle wild phase in the/Fe-C composite work layer is of a size of 75～200 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100605532A CN1322940C (en) | 2004-09-26 | 2004-09-26 | Large section WCP/Fe-C composite material-nodular iron composite structure collars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100605532A CN1322940C (en) | 2004-09-26 | 2004-09-26 | Large section WCP/Fe-C composite material-nodular iron composite structure collars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1751816A CN1751816A (en) | 2006-03-29 |
| CN1322940C true CN1322940C (en) | 2007-06-27 |
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| CNB2004100605532A Expired - Fee Related CN1322940C (en) | 2004-09-26 | 2004-09-26 | Large section WCP/Fe-C composite material-nodular iron composite structure collars |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071360B (en) * | 2011-01-14 | 2012-06-27 | 华南理工大学 | Tungsten carbide particle-enhanced iron-based powder metallurgy material and preparation method thereof |
| WO2019151402A1 (en) * | 2018-01-31 | 2019-08-08 | 日立金属株式会社 | Cemented carbide composite roll and manufacturing method of cemented carbide composite roll |
| CN109402493A (en) * | 2018-10-15 | 2019-03-01 | 海南科技职业学院 | A kind of compacted cast iron casting roll sheath of as-cast bainite alloy for Aluminum sheets continuous casting and rolling |
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| CN2231144Y (en) * | 1995-08-31 | 1996-07-17 | 于超 | Composite ceramic roller ring |
| CN1174764A (en) * | 1996-08-28 | 1998-03-04 | 邢台市热压厂 | Ceramic metal roll-ring |
| JP2000061508A (en) * | 1998-08-25 | 2000-02-29 | Mitsubishi Materials Corp | Composite rolling roll whose residual stress is reduced |
| CN1251864A (en) * | 1998-10-15 | 2000-05-03 | 冶金工业部北京冶金设备研究院 | Multi-element W-alloy cast iron roll collar and its making technology |
| CN2380317Y (en) * | 1999-05-06 | 2000-05-31 | 殷凤高 | Regenerated tungsten-carbide roller ring |
| JP2001150007A (en) * | 1999-11-30 | 2001-06-05 | Kubota Corp | Reduction roll and surface layer of reduction roll |
| CN1454723A (en) * | 2003-05-29 | 2003-11-12 | 安泰科技股份有限公司 | Composite roll ring of high-speed steel |
| JP2004176083A (en) * | 2002-11-25 | 2004-06-24 | Mitsubishi Materials Corp | Sintered hard alloy roll ring for hot rolling having excellent high-temperature hardness and high-temperature strength |
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2004
- 2004-09-26 CN CNB2004100605532A patent/CN1322940C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2231144Y (en) * | 1995-08-31 | 1996-07-17 | 于超 | Composite ceramic roller ring |
| CN1174764A (en) * | 1996-08-28 | 1998-03-04 | 邢台市热压厂 | Ceramic metal roll-ring |
| JP2000061508A (en) * | 1998-08-25 | 2000-02-29 | Mitsubishi Materials Corp | Composite rolling roll whose residual stress is reduced |
| CN1251864A (en) * | 1998-10-15 | 2000-05-03 | 冶金工业部北京冶金设备研究院 | Multi-element W-alloy cast iron roll collar and its making technology |
| CN2380317Y (en) * | 1999-05-06 | 2000-05-31 | 殷凤高 | Regenerated tungsten-carbide roller ring |
| JP2001150007A (en) * | 1999-11-30 | 2001-06-05 | Kubota Corp | Reduction roll and surface layer of reduction roll |
| JP2004176083A (en) * | 2002-11-25 | 2004-06-24 | Mitsubishi Materials Corp | Sintered hard alloy roll ring for hot rolling having excellent high-temperature hardness and high-temperature strength |
| CN1454723A (en) * | 2003-05-29 | 2003-11-12 | 安泰科技股份有限公司 | Composite roll ring of high-speed steel |
Non-Patent Citations (4)
| Title |
|---|
| WC颗粒增强钢基复合材料辊环的研究 冯培忠，强颖怀，热加工工艺，第4期 2004 * |
| WC颗粒增强钢基复合材料辊环的研究 冯培忠，强颖怀，热加工工艺，第4期 2004;WC颗粒增强钢基复合材料辊环的研究 宋延沛，李秉哲，王文焱，谢敬佩，朱景芝，机械工程学报，第37卷第11期 2001;离心铸造WC颗粒增强钢基复合材料辊环的研制 冯培忠，强颖怀，轧钢，第21卷第4期 2004 * |
| WC颗粒增强钢基复合材料辊环的研究 宋延沛，李秉哲，王文焱，谢敬佩，朱景芝，机械工程学报，第37卷第11期 2001 * |
| 离心铸造WC颗粒增强钢基复合材料辊环的研制 冯培忠，强颖怀，轧钢，第21卷第4期 2004 * |
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| CN1751816A (en) | 2006-03-29 |
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