CN101275193B - Preparation for free-cutting adnic alloy - Google Patents
Preparation for free-cutting adnic alloy Download PDFInfo
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- CN101275193B CN101275193B CN2007100107884A CN200710010788A CN101275193B CN 101275193 B CN101275193 B CN 101275193B CN 2007100107884 A CN2007100107884 A CN 2007100107884A CN 200710010788 A CN200710010788 A CN 200710010788A CN 101275193 B CN101275193 B CN 101275193B
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Abstract
A free-cutting nickel-copper alloy is disclosed whose ingredients by percent are that: carbon<=0.3, manganese <=2.0, iron<=2.5, sulphur 0.025-0.060, silicon<=0.5, copper 28.0-34.0, the rests are nickel, the manufacturing method of the free-cutting nickel-copper alloy comprises the steps of: 1, loading and vacuumizing; 2, controlling the temperature within the range from 1500 to 1650 DEG C, refining for 5 to 25 minutes, adding deoxidizer and finally the sulphide to lead the sulphur content in the nickel-copper alloy to be between 0.020% and 0.08%, the optimized sulphur content is 0.040% 0.06%, the sulphide is one of manganese sulphide, iron sulphide, copper sulphide and high nickel matte or mixture thereof, the deoxidizer is one of carbon and nickel-magnesium alloy, calcium-silicon alloy, and copper-zirconium alloy or the mixture thereof; 3, measuring the temperature and casting at the temperature between 1400 and 1500 DEG C for 30 seconds at most, and vacuumizing for at least 10 minutes; the good cutting performance of the steel remarkably improves the cutability of steel, reduces the cutting force and cutting temperature, conspicuously prolonging the life of cutting tool, lessens the surface roughness of working piece and improves the cut-processing performance.
Description
Technical field
The present invention relates to the preparation technology of free-cutting adnic alloy material, a kind of preparation method of free-cutting adnic alloy is provided especially.
Background technology
According to the difference that contains easy cutting element, can be divided into sulphur free-cutting steel, lead and easy-cutting steel, calcium and easy-cutting steel, titanium free-cutting steel and compound free-cutting steel.Using more is the sulphur free-cutting steel.It is generally acknowledged that along with increasing of sulphur content, the cutting ability of steel is also good more, but for ordinary steel, trace increases sulphur just can play the positive effect that improves machinability; Adding suitable sulphur (especially being lower than below 0.1% at sulphur), all is very significant to the effect of improving the steel machinability.Its effect mainly shows: not only reduce cutting force and cutting temperature, obviously improve cutter life, but also reduce the surfaceness of workpiece, improve the smear metal property handled.
The free-cutting steel series that China produces, though through standard revise several times, become 9 kinds of steel of existing GB8731.88, major part is to follow USSR (Union of Soviet Socialist Republics) standard in 1954, fertile kind is also very limited.There is not Ni-based free cutting alloy standard.
Ambrose alloy is to use very many a kind of nickel-base alloys, and corronel comprises Monel 400, Monel K500 etc., and, be widely used in fields such as oil, petrochemical industry, boats and ships.Do not limited its application but its processing characteristics is good, the UNS N04405 trade mark has been stipulated easy cutting Monel metal composition, wherein sulphur content requires to be controlled at 0.025-0.06%, sulphur mainly exists with the form of (Mn, Fe) S in the corronel, continuity and the stress raiser effect of having cut off matrix owing to M n S inclusion make the car bits easily broken, lubrication reduces the wearing and tearing of cutter, thereby has improved cutting ability.
Easily the cutting ambrose alloy is the same with other free-cutting steel, be that the world three is difficult to one of alloy of producing greatly, the difficult point of process exploitation mainly is: the elevated oxygen level, the high sulfur content that easily cut ambrose alloy greatly reduce the surface tension of alloy liquid, make alloy liquid and slag separation difficulty, thereby cause alloy liquid and slag to mix volume, form exhibiting high surface and surface defect, this forging and rolling being difficult to that makes that next step need carry out carries out; The segregation of sulphur is a principal element that causes its cutting ability inequality.Sulphur forms positive segregation in head of ingot portion, forms negative segregation at the ingot afterbody, and therefore, at the different positions of ingot, its content deviation is very big.If oxygen level height in the alloy liquid also very easily generates hard oxide compound particle, oxide compound is easily concentrated at the ingot afterbody, thereby makes the cutting rolled steel performance impact also bigger.More than two factors free machining homogeneity is produced a very large impact.
Easily manganese, oxygen level height in the cutting ambrose alloy, at high temperature can with some the composition generation physical and chemical reaction in the refractory materials, make the refractory materials etch; The free-cutting adnic alloy fluid viscosity is big, and is mobile poor, must improve teeming temperature for guaranteeing its watering property, is again the responsive steel grade of crackle but easily cut ambrose alloy simultaneously, must adopt weak cold system, and these conflicting requirements make the free-cutting steel production technique very difficult.
Therefore, the present several problems that should put forth effort to solve in the performance history of easy cutting ambrose alloy technology are: select which kind of sulfide, how to add, the optimal control of chemical ingredients, the selection of determining to reach reductor selection and deoxidation system of best oxygen content.
Therefore, the present several problems that should put forth effort to solve in the performance history of easy cutting ambrose alloy technology are: select which kind of sulfide, how to add, the optimal control of chemical ingredients, the selection of determining to reach reductor selection and deoxidation system of best oxygen content.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of free-cutting adnic alloy.
The invention provides a kind of preparation method of free-cutting adnic alloy, the composition of corronel is weight percent: carbon≤0.3, manganese≤2.0, iron≤2.5, sulphur 0.020-0.060, silicon≤0.5, copper 28.0-34.0, the nickel of surplus is characterized in that: the preparation method of described free-cutting adnic alloy comprises following three steps, the first step: charging, vacuumize, at this moment vacuum tightness will remain within the 9Pa, send;
Second step: wait that the material of being adorned becomes civilized fully, vacuum tightness will be lower than 1Pa simultaneously, at this moment controlled temperature is between 1500 ℃ to 1650 ℃, refining 5 to 25 minutes, add reductor, add sulfide at last, make sulphur content in the corronel between 0.020-0.060%, described sulfide is a kind of in manganese sulfide, iron sulphide, nickelous sulfide, cupric sulfide and the high ice nickel or their mixture, and described reductor is mixture or the calcium silicon or the copper zirconium alloy of carbon and nickel magnesium alloy;
The 3rd step: thermometric, casting in the time of 1400 ℃ to 1500 ℃, pouring time is lower than 30 seconds, and vacuum breaker is no less than 10 minutes.
Described adding sulfide makes that sulphur content is preferably 0.040-0.06% in the corronel.
A kind of in described manganese sulfide, iron sulphide, nickelous sulfide, cupric sulfide and the high ice nickel or their mixture are powdery or bulk, directly adding, or wrap in Copper Foil or the nickel foil and add.
Need the refining process of a strict vacuum in the smelting process of described free-cutting adnic alloy, be lower than 20ppm to guarantee the oxygen level in the alloy, preferably the content oxygen level is lower than 10ppm;
Selected reductor can be calcium and calcium-silicon alloy, reductors such as tellurium, zirconium, rare earth and titanium, magnesium deoxidizer also can be considered, but carry out deoxidation without metallic aluminium as far as possible, the promptly independent metal of above reductor, also with the master alloy of nickel or copper, as Cu-Ca, Cu-RE, Ni-Mg etc.
Advantage of the present invention:
The excellent cutting performance of steel to improving the effect highly significant of steel machinability, reduces cutting force and cutting temperature, obviously improves cutter life, reduces the surfaceness of workpiece, improves the smear metal property handled.
Embodiment
Embodiment 1
In the corronel, after 20 minutes, add carbon and nickel magnesium alloy deoxidation, add 0.06% (sulphur weight) MnS at last to corronel liquid 1600 ℃ of refinings.
Alloy pig composition analysis result to casting:
The result forges processing, and sample turning is functional;
Embodiment 2
In the corronel, refining added the calcium silicon deoxidation after 20 minutes, added 0.07% (sulphur weight) FeS at last to corronel liquid.
Alloy pig composition analysis result to casting:
The processing of hot rolling as a result, sample turning is functional;
Embodiment 3
In the corronel, add carbon, refining added the copper zirconium alloy deoxidation after 15 minutes, added the high ice of 0.07% (sulphur weight) nickel at last to corronel liquid.
Alloy pig composition analysis result to casting:
Foundry goods is directly processed, and sample turning is functional;
Embodiment 4
In the corronel, add carbon, refining added the copper zirconium alloy deoxidation after 20 minutes, added 0.07% (sulphur weight) cupric sulfide at last to corronel liquid.
Alloy pig composition analysis result to casting:
Foundry goods is directly processed, and sample turning is functional;
Claims (5)
1. the preparation method of a free-cutting adnic alloy, the composition of corronel is, weight percent: carbon≤0.3, manganese≤2.0, iron≤2.5, sulphur 0.020-0.060, silicon≤0.5, copper 28.0-34.0, the nickel of surplus, it is characterized in that: the preparation method of described free-cutting adnic alloy comprises following three steps
The first step: charging, vacuumize, at this moment vacuum tightness will remain within the 9Pa, send;
Second step: wait that the material of being adorned becomes civilized fully, vacuum tightness will be lower than 1Pa simultaneously, at this moment controlled temperature is between 1500 ℃ to 1650 ℃, refining 5 to 25 minutes, add reductor, add sulfide at last, make sulphur content in the corronel between 0.020-0.060%, described sulfide is a kind of in manganese sulfide, iron sulphide, nickelous sulfide, cupric sulfide and the high ice nickel or their mixture, and described reductor is mixture or the calcium silicon or the copper zirconium alloy of carbon and nickel magnesium alloy;
The 3rd step: thermometric, casting in the time of 1400 ℃ to 1500 ℃, pouring time is lower than 30 seconds, and vacuum breaker is no less than 10 minutes.
2. according to the preparation method of the described free-cutting adnic alloy of claim 1, it is characterized in that: described last adding sulfide makes that sulphur content is 0.040-0.06% in the corronel.
3. according to the preparation method of the described free-cutting adnic alloy of claim 1, it is characterized in that: a kind of in described manganese sulfide, iron sulphide, nickelous sulfide, cupric sulfide and the high ice nickel or their mixture, be powdery or bulk, directly add, or wrap in Copper Foil or the nickel foil and add.
4. according to the preparation method of the described free-cutting adnic alloy of claim 1, it is characterized in that: need the refining process of a strict vacuum in the smelting process of described free-cutting adnic alloy, be lower than 20ppm to guarantee the oxygen level in the alloy.
5. according to the preparation method of the described free-cutting adnic alloy of claim 4, it is characterized in that: the oxygen level in the described alloy is preferably and is lower than 10ppm.
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| CN2007100107884A CN101275193B (en) | 2007-03-30 | 2007-03-30 | Preparation for free-cutting adnic alloy |
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| CN2007100107884A CN101275193B (en) | 2007-03-30 | 2007-03-30 | Preparation for free-cutting adnic alloy |
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| CN101275193B true CN101275193B (en) | 2011-03-23 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102146528A (en) * | 2011-04-21 | 2011-08-10 | 安徽应流铸业有限公司 | Method for melting nickel-copper alloy in intermediate frequency furnace |
| CN103276247A (en) * | 2013-05-23 | 2013-09-04 | 苏州贝思特金属制品有限公司 | Nickel-copper alloy seamless tube |
| CN103322336A (en) * | 2013-06-25 | 2013-09-25 | 浙江国邦钢业有限公司 | Nickel-copper alloy pipe producing technology and nickel-copper alloy seamless steel pipe |
| CN104388756B (en) * | 2014-10-30 | 2016-04-20 | 合肥工业大学 | A kind of nickel-base alloy and preparation method thereof |
| CN107338369A (en) * | 2017-07-14 | 2017-11-10 | 无锡隆达金属材料有限公司 | Monel bar and preparation method thereof |
| CN109609808A (en) * | 2019-01-11 | 2019-04-12 | 上海胜桀精密机械科技有限公司 | A kind of nickel alloy and preparation method thereof |
| CN111809074B (en) * | 2020-07-21 | 2022-03-08 | 四川科派新材料有限公司 | Lanthanum-carbon-magnesium composite material, tellurium-copper alloy material and preparation method thereof |
| CN114015888A (en) * | 2021-11-04 | 2022-02-08 | 金川集团股份有限公司 | Intermediate frequency furnace nickel smelting composite diffusion deoxidizer and preparation method thereof |
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| US6207105B1 (en) * | 1998-12-28 | 2001-03-27 | Global Manufacturing Solutions, Inc. | Wear resistant nickel alloys and methods of making same |
| CN1546714A (en) * | 2003-12-04 | 2004-11-17 | 盛国大 | Frangible nickel-copper-iron alloy |
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|---|---|---|---|---|
| US4612164A (en) * | 1984-11-01 | 1986-09-16 | Inco Alloys International, Inc. | Nickel copper alloys with enhanced malleability and improved sulfide distribution |
| US6207105B1 (en) * | 1998-12-28 | 2001-03-27 | Global Manufacturing Solutions, Inc. | Wear resistant nickel alloys and methods of making same |
| CN1546714A (en) * | 2003-12-04 | 2004-11-17 | 盛国大 | Frangible nickel-copper-iron alloy |
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Owner name: SHENYANG JINNA NEW MATERIAL CO., LTD. Free format text: FORMER NAME: JINNA NEW MATERIAL CO. LTD., SHENYANG |
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Address after: 110179 Liaoning Province, Shenyang Hunnan hi tech Development Zone Century Road No. 22 Patentee after: Shenyang Jinna New Material Co.,Ltd. Address before: 110179 Liaoning Province, Shenyang Hunnan hi tech Development Zone Century Road No. 22 Patentee before: Jinna New Material Co., Ltd., Shenyang |
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