CN103194639A - High-performance RENiCrCu alloy material and preparation method thereof - Google Patents
High-performance RENiCrCu alloy material and preparation method thereof Download PDFInfo
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- CN103194639A CN103194639A CN2013101100619A CN201310110061A CN103194639A CN 103194639 A CN103194639 A CN 103194639A CN 2013101100619 A CN2013101100619 A CN 2013101100619A CN 201310110061 A CN201310110061 A CN 201310110061A CN 103194639 A CN103194639 A CN 103194639A
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Abstract
The invention provides a high-performance RENiCrCu alloy material and a preparation method thereof. The material comprises the following components in percentage by mass: 0.01 to 0.50 percent of RE, 0.5 to 6.0 percent of Ni, 0.1 to 2.0 percent of Cr, less than or equal to 1 percent of other impurities, and the balance of Cu. The preparation method comprises the following steps of: melting the prepared raw material pure Cu in an electric furnace or flame rever-beratory furnace crucible, adding pure Ni and pure Cr in batches with stirring when the temperature rises to 1,280-1,350DEG C; pressing RE in 3 to 5 times by using a bell jar after the pure Ni and pure Cr are completely added, sufficiently stirring the alloy solution, standing for 3 to 5 minutes, removing slag on the surface of the alloy solution, and sampling to make on-the-spot sample examination and analysis; and regulating the alloy component, and casting the qualified liquid alloy into casts or billets.
Description
Technical field
The present invention relates to RENiCrCu alloy material technology of preparing.
Background technology
At present for the anti-corrosion wear copper alloy spare and accessory parts that bear the high temperature heavy load lotus as anti-corrosion wear part materials such as stretching extrusion mould such as blast-furnace tuyere, oxygen lance shower nozzle, electrode watt plate (claiming Hubei Province plate again), electric locomotive osculatory and wire rod, tubing, sheet material, billet and metallurgical crystallizers, generally adopt fine copper and low-alloy bronze material, because fine copper and low-alloy bronze material intensity are low, the high temperature oxidation resisting corrosive nature is poor, friction resistant wearing and tearing ability is not high, can not satisfy the corrosion resistant antiwear working condition requirement simultaneously.
RE is the expression symbol of mishmetal, and main component is cerium, also has elements such as lanthanum, yttrium, tantalum, iridium, and also the someone is cerium (Ce) mishmetal.
Summary of the invention
The objective of the invention is to improve the work-ing life of the anti-corrosion wear copper alloy spare and accessory parts that bear the high temperature heavy load lotus, make more environmental protection and energy saving of technological process.
The present invention is high-performance RENiCrCu alloy material and preparation method thereof, and its alloy material is measured its composition by mass percentage and is: RE0.01～0.50%, Ni0.5～6.0%, Cr0.1～2.0%, surplus Cu%, other impurity≤1%.
The preparation method of high-performance RENiCrCu alloy material the steps include:
(1) prepares burden by above-described alloying constituent, the pure Cu of starting material for preparing is packed into melt in electric furnace or the flame reverberatory furnace crucible;
When (2) treating that temperature rises to 1280～1350 ℃, add pure Ni and pure Cr, will repeatedly add when adding pure Ni and pure Cr in batches, stir while add;
(3) etc. after the pure Cr of pure Ni adds fully, divide with bell jar to be pressed into RE for 3～5 times, fully stir and leave standstill the slag that 3～5 minutes rakes go to alloy liquid surface after the alloy liquid;
(4) sampling is done the stokehold inspection and is analyzed, and adjusts alloying constituent; The stokehold checks that sample is 120 ㎜ * 10 ㎜ * 10 ㎜ strips, and sample upper surface micro fractures about bent angle 30 degree, and fracture surface is smooth, organize fine and closely woven, pore-free, segregation and oxide slag inclusion, it is qualified that color is garnet;
(5) qualified liquid alloy is poured into foundry goods or billet.
RENiCrCu alloy material of the present invention, its main machinery and physicals are as follows: hardness HBW 〉=180, tensile strength б
b〉=600MPa, unit elongation δ
5〉=10, coefficientoffriction≤0.19, specific conductivity 〉=60%IACS.Because of machinery and the physicals of its excellence, can be used for making corrosion resistant antiwear parts such as blast-furnace tuyere, oxygen lance shower nozzle, Hubei Province plate, electric locomotive osculatory and metallurgical crystallizer.
Embodiment
The present invention is high-performance RENiCrCu alloy material and preparation method thereof, and its alloy material is measured its composition by mass percentage and is: RE0.01～0.50%, Ni0.5～6.0%, Cr0.1～2.0%, surplus Cu%, other impurity≤1%.
The preparation method of high-performance RENiCrCu alloy material the steps include:
(1) prepares burden by above-described alloying constituent, the pure Cu of starting material for preparing is packed into melt in electric furnace or the flame reverberatory furnace crucible;
When (2) treating that temperature rises to 1280～1350 ℃, add pure Ni and pure Cr, will repeatedly add when adding pure Ni and pure Cr in batches, stir while add;
(3) etc. after the pure Cr of pure Ni adds fully, divide with bell jar to be pressed into RE for 3～5 times, fully stir and leave standstill the slag that 3～5 minutes rakes go to alloy liquid surface after the alloy liquid;
(4) sampling is done the stokehold inspection and is analyzed, and adjusts alloying constituent; The stokehold checks that sample is 120 ㎜ * 10 ㎜ * 10 ㎜ strips, and sample upper surface micro fractures about bent angle 30 degree, and fracture surface is smooth, organize fine and closely woven, pore-free, segregation and oxide slag inclusion, it is qualified that color is garnet;
(5) qualified liquid alloy is poured into foundry goods or billet.
The granularity of the pure Ni that adds is less than 5mm.The granularity of the pure Cr that adds is less than 3mm.
Cu in the composition of alloy material of the present invention is that elements such as the fundamental element of material and Ni, Cr, RE form sosoloid or intermetallic compound, improves the substrate performance of material; Ni can infinitely be dissolved in the effect of playing crystal grain thinning reinforcement matrix among the Cu for α-single phase solid solution, and significantly improves mechanical property and the corrosion resistance of Cu alloy material, improves the hot strength of material, reduces the red brittleness in the liquid metal solidification process; The Cr element can form sosoloid in Cu, the precipitation hardening effect is arranged, but solid solubility has only about 0.65%, most of in Cu, exist with micron order or nano-scale particle precipitated phase, can generate CuCr and NiCr compound with Cu and Ni, separate out when liquid alloy is solidified and become new nucleus, refinement alloy grain tissue, improve intensity and the resistance toheat of Cu alloy material, when the copper alloy material grinding abrasion, play the effect of sliding friction, the abrasion resistance properties of Cu alloy material is improved; Because Ni, Cr element are not easy to take place oxidation under field conditions (factors), the sosoloid or the intermetallic compound that generate with Cu are difficult for oxidation equally, and this is useful to resistance of oxidation and the corrosion resistance nature that improves Cu alloy material; RE can purify alloy, eliminate the impurity element in the Cu matrix, suppress Cu grain growth under the high temperature, the refinement alloy grain, improve alloy strength and antioxidant property, can dwindle the crystallization range of copper alloy, can also improve the high temperature resistance to cleavage of material in moulding process, generate NiCrCe and intermetallic compounds such as NiCrX and CuCeX with elements such as Ni, Cr, become the resistance of material dislocation motion under external force, the probability that ftractures along crystal boundary when reducing carry load, thereby the abrasion resistance properties of raising material; Add elements such as Ni, Cr, RE nonhazardous gas and pollution substance discharging in the melting manufacturing processed in the Cu alloy, human body and physical environment are not caused detrimentally affect and destruction, environmental protection and energy saving.
Claims (4)
1. high-performance RENiCrCu alloy material is characterized in that measuring by mass percentage its composition and is: RE0.01～0.50%, Ni0.5～6.0%, Cr0.1～2.0%, surplus Cu%, other impurity≤1%.
2. the preparation method of high-performance RENiCrCu alloy material the steps include:
(1) prepares burden by the described alloying constituent of claim 1, the pure Cu of starting material for preparing is packed into melt in electric furnace or the flame reverberatory furnace crucible;
When (2) treating that temperature rises to 1280～1350 ℃, add pure Ni and pure Cr, will repeatedly add when adding pure Ni and pure Cr in batches, stir while add;
(3) etc. after the pure Cr of pure Ni adds fully, divide with bell jar to be pressed into RE for 3～5 times, fully stir and leave standstill the slag that 3～5 minutes rakes go to alloy liquid surface after the alloy liquid;
(4) sampling is done the stokehold inspection and is analyzed, and adjusts alloying constituent; The stokehold checks that sample is 120 ㎜ * 10 ㎜ * 10 ㎜ strips, and sample upper surface micro fractures about bent angle 30 degree, and fracture surface is smooth, organize fine and closely woven, pore-free, segregation and oxide slag inclusion, it is qualified that color is garnet;
(5) qualified liquid alloy is poured into foundry goods or billet.
3. the preparation method of high-performance RENiCrCu alloy material according to claim 2 is characterized in that the granularity of the pure Ni that adds is less than 5mm.
4. the preparation method of high-performance RENiCrCu alloy material according to claim 2 is characterized in that the granularity of the pure Cr that adds is less than 3mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101100619A CN103194639A (en) | 2013-04-01 | 2013-04-01 | High-performance RENiCrCu alloy material and preparation method thereof |
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| CN2013101100619A CN103194639A (en) | 2013-04-01 | 2013-04-01 | High-performance RENiCrCu alloy material and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231343A (en) * | 1998-04-06 | 1999-10-13 | 昆明贵金属研究所 | Copper base alloy electrode material |
| CN102560192A (en) * | 2011-12-31 | 2012-07-11 | 无锡日月合金材料有限公司 | High-strength and high-plasticity copper alloy and preparation method thereof |
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- 2013-04-01 CN CN2013101100619A patent/CN103194639A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231343A (en) * | 1998-04-06 | 1999-10-13 | 昆明贵金属研究所 | Copper base alloy electrode material |
| CN102560192A (en) * | 2011-12-31 | 2012-07-11 | 无锡日月合金材料有限公司 | High-strength and high-plasticity copper alloy and preparation method thereof |
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Application publication date: 20130710 |