CN103469005B - A kind of method of preparing copper-tin-nickel alloy powder by water atomization - Google Patents
A kind of method of preparing copper-tin-nickel alloy powder by water atomization Download PDFInfo
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- CN103469005B CN103469005B CN201310397116.9A CN201310397116A CN103469005B CN 103469005 B CN103469005 B CN 103469005B CN 201310397116 A CN201310397116 A CN 201310397116A CN 103469005 B CN103469005 B CN 103469005B
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- 239000000843 powder Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910000990 Ni alloy Inorganic materials 0.000 title claims abstract description 18
- VRUVRQYVUDCDMT-UHFFFAOYSA-N [Sn].[Ni].[Cu] Chemical compound [Sn].[Ni].[Cu] VRUVRQYVUDCDMT-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000009692 water atomization Methods 0.000 title claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 25
- 239000000956 alloy Substances 0.000 claims abstract description 25
- 239000010949 copper Substances 0.000 claims abstract description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000889 atomisation Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 230000018044 dehydration Effects 0.000 claims abstract description 4
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000007670 refining Methods 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000011135 tin Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 4
- 229910001229 Pot metal Inorganic materials 0.000 description 7
- 238000005452 bending Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- WIKSRXFQIZQFEH-UHFFFAOYSA-N [Cu].[Pb] Chemical compound [Cu].[Pb] WIKSRXFQIZQFEH-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- CLDVQCMGOSGNIW-UHFFFAOYSA-N nickel tin Chemical compound [Ni].[Sn] CLDVQCMGOSGNIW-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Abstract
A kind of method that the embodiment of the invention discloses preparing copper-tin-nickel alloy powder by water atomization, it comprises the following steps: the 1st step, it is the copper of 84～86% by percentage by weight, the stannum of 5～7% and the nickel of 8～10%, add smelting furnace, at normal pressure, the temperature of 1200 DEG C to 1300 DEG C, carry out melting, form aluminium alloy；2nd step, alloy liquid carries out chemical refining deoxidation and rake slag operation processes；3rd step, alloy liquid carries out composition；4th step, pouring aluminium alloy into bottom pour ladle, flow into atomization bucket by bottom pour ladle hole, it is broken that the water under high pressure alloy mixed liquor that enforcement high-pressure hydraulic pump produces carries out strike, through being smashed by nozzle water under high pressure out, alloy mixed liquor is formed tiny spherical powder, and nozzle angle is between 16-22 degree；5th step, dehydration；6th step, sieves powder。The present invention is for improving the impact on environment in sintering process of leaded metal material, it is to avoid environment is caused adverse consequences by leaded waste products。
Description
Technical field
The invention belongs to alloy powder preparing technical field, particularly a kind of method of preparing copper-tin-nickel alloy powder by water atomization。
Background technology
CuSn6Ni9 is that one can replace the bimetallic new materials such as copper-lead (Sn10-Pb10, Sn6-Pb6-Zn3), it is mainly used in the aspects such as component of machine, oiliness bearing and constitutional detail, its meaning is in that to improve the impact on environment in sintering process of leaded metal material, it is to avoid leaded waste products is to environment。
Summary of the invention
For solving the problems referred to above, a kind of method that it is an object of the invention to provide preparing copper-tin-nickel alloy powder by water atomization, mainly it is mixed into raw material with electrolytic copper plate, nickel ingot, tin slab etc. according to certain ratio, instead of lead-containing alloy powder, improve the impact on environment in sintering process of leaded metal material, it is to avoid environment is caused adverse consequences by leaded waste products。
For achieving the above object, the technical scheme is that
A kind of method of preparing copper-tin-nickel alloy powder by water atomization, comprises the following steps:
1st step, by the copper Cu that percentage by weight is 84～86%, the nickel of the stannum Sn and 8～10% of 5～7%, add smelting furnace, at normal pressure, the temperature of 1200 DEG C to 1300 DEG C, carry out melting, form aluminium alloy, wherein the total impurities content in Cu, Sn and Ni is less than 0.5%；
2nd step, alloy liquid carries out chemical refining deoxidation and rake slag operation processes；
3rd step, alloy liquid carries out composition observing and controlling, and the percentage by weight controlling Cu is 84～86%, the percentage by weight of Sn is 5～7%, the percentage by weight of Ni is 8～10%, impurity≤0.3% unavoidably maybe cannot rejected, and is subsequently adding coverture and stands insulation between 1220～1260 DEG C；
4th step, pour aluminium alloy into bottom pour ladle, bottom pour ladle leakage footpath is between 2.0-3.5mm, flow into atomization bucket by bottom pour ladle hole, implement the water under high pressure alloy mixed liquor that high-pressure hydraulic pump produces and carry out hitting broken, alloy mixed liquor is formed tiny spherical powder through being smashed by nozzle water under high pressure out, nozzle angle is between 16-22 degree, in atomization process, the moment keeps middle bottom pour ladle copper liquid height not higher than 15cm, maintains certain water level in atomization bucket simultaneously；
5th step, is dried process by the alloy powder after dehydration by drying machine, and alloy powder in drying machine does not specifically stop stirring, and dryer temperature is risen to 220 DEG C from 60 DEG C by whipping process；
6th step, sieve powder prepares the copper tin-nickel alloy powder of-325～+350 orders。
Preferably, described nozzle is plate hole nozzle, and nozzle hole count is 16-20, and injection diameter is 2.0～3.5mm, and atomization hydraulic pressure is 4.0～5.0Mp, and water temperature is 40-50 DEG C。
The copper tin-nickel alloy powder obtained by above method fills or elliposoidal in sub-ball, and powder shape, size are closer to seemingly。Copper tin-nickel alloy powder apparent density 5.0-5.3g/cm3, mobility≤20s/50g, bending strength performance is suitable with Pot metal powder, and wearability, draftability and corrosion resistance are superior to Pot metal powder。This copper tin-nickel alloy powder can replace Pot metal powder very well, especially improves the impact on environment in sintering process of leaded metal material, it is to avoid environment is caused adverse consequences by leaded waste products。
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the method for the preparing copper-tin-nickel alloy powder by water atomization of the embodiment of the present invention。
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated。Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention。
On the contrary, the present invention contains any replacement made in the spirit and scope of the present invention, amendment, equivalent method and scheme being defined by the claims。Further, in order to make the public that the present invention to be had a better understanding, in below the details of the present invention being described, detailed describe some specific detail sections。The description not having these detail sections for a person skilled in the art can also understand the present invention completely。
Referring to Fig. 1, it is shown that for the method step flow chart of a kind of preparing copper-tin-nickel alloy powder by water atomization of the embodiment of the present invention, it comprises the following steps:
S101, melting: by the copper Cu that percentage by weight is 84～86%, the nickel of the stannum Sn and 8～10% of 5～7%, add smelting furnace, at normal pressure, the temperature of 1200 DEG C to 1300 DEG C, carry out melting, form aluminium alloy, wherein the total impurities content in Cu, Sn and Ni is less than 0.5%；
In a concrete application example, it is mixed into raw material with electrolytic copper plate, tin slab, nickel ingot etc. according to the ratio of 85: 6: 9 and adds melting in mid-frequency melting furnace, specifically every 200 kilograms of stove, copper 170Kg stannum 12Kg nickel 18Kg。
S102, alloy liquid carries out chemical refining deoxidation and rake slag operation processes；
S103, alloy liquid carries out composition observing and controlling, and the percentage by weight controlling Cu is 84～86%, the percentage by weight of Sn is 5～7%, the percentage by weight of Ni is 8～10%, impurity≤0.3% unavoidably maybe cannot rejected, and is subsequently adding coverture and stands insulation between 1220～1260 DEG C；
S104, atomization: pour aluminium alloy into bottom pour ladle, bottom pour ladle leakage footpath is between 2.0-3.5mm, atomization bucket is flowed into by bottom pour ladle hole, it is broken that the water under high pressure alloy mixed liquor that enforcement high-pressure hydraulic pump produces carries out strike, alloy mixed liquor is formed tiny spherical powder through being smashed by nozzle water under high pressure out, nozzle angle is between 16-22 degree, in atomization process, moment keeps middle bottom pour ladle copper liquid height not higher than 15cm, maintain certain water level in atomization bucket simultaneously, maintain atomization height of water level within bucket constant, be conducive to falling behind under powder particle being cooled into ball-type rapidly, the tactile water time that this measure is to reduce in the different height of water level of contact and powder down process in contact atomization copper is identical, prevent the change of powder surface shape。
In concrete application example, optional nozzle is plate hole nozzle, and nozzle hole count is 16-20, and injection diameter is 2.0～3.5mm, and atomization hydraulic pressure is 4.0～5.0Mp, and atomization water temperature is at 40-50 DEG C。By adopting above plate hole nozzle and atomization hydraulic pressure, it is possible to making obtained alloyed powder in sub-ball dress or elliposoidal, powder shape, size are closer to seemingly。
S105, is dried process by the alloy powder after dehydration by drying machine, and alloy powder in drying machine does not specifically stop stirring, and dryer temperature is risen to 220 DEG C from 60 DEG C by whipping process。Baking temperature is too low, and dry not exclusively temperature is too high, and powder body can lump, and is slowly stirred intensification, makes powder be more easy to dry, saves drying time, improves the quality of alloy powder。
S106, sieve powder prepares the copper tin-nickel alloy powder of-325～+350 orders。
Under indicate the Performance comparision of copper tin-nickel alloy powder and the Pot metal powder being prepared from by the embodiment of the present invention:
By copper tin-nickel alloy powder apparent density 5.0-5.3g/cm prepared by said method3, mobility≤20s/50g, bending strength performance is suitable with Pot metal powder, and wearability, draftability and corrosion resistance are superior to Pot metal powder。Therefore, this copper tin-nickel alloy powder can replace Pot metal powder very well, especially improves the impact on environment in sintering process of leaded metal material, it is to avoid environment is caused adverse consequences by leaded waste products。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention。
Claims (1)
1. the method for a preparing copper-tin-nickel alloy powder by water atomization, it is characterised in that comprise the following steps:
1st step, by the copper Cu that percentage by weight is 85%, the nickel of the stannum Sn and 9% of 6%, add smelting furnace, at normal pressure, the temperature of 1200 DEG C to 1300 DEG C, carry out melting, form aluminium alloy, wherein the total impurities content in Cu, Sn and Ni is less than 0.5%；
2nd step, alloy liquid carries out chemical refining deoxidation and rake slag operation processes；
3rd step, alloy liquid carries out composition observing and controlling, and the percentage by weight controlling Cu is 85%, the percentage by weight of Sn is 6%, the percentage by weight of Ni is 9%, impurity≤0.3% unavoidably maybe cannot rejected, and is subsequently adding coverture and stands insulation between 1220～1260 DEG C；
4th step, pour aluminium alloy into bottom pour ladle, bottom pour ladle leakage footpath is between 2.0-3.5mm, atomization bucket is flowed into by bottom pour ladle hole, it is broken that the water under high pressure alloy mixed liquor that enforcement high-pressure hydraulic pump produces carries out strike, alloy mixed liquor is formed tiny spherical powder through being smashed by nozzle water under high pressure out, nozzle angle is between 16-22 degree, in atomization process, moment keeps middle bottom pour ladle copper liquid height not higher than 15cm, maintain certain water level in atomization bucket simultaneously, described nozzle is plate hole nozzle, nozzle hole count is 16-20, injection diameter is 2.0～3.5mm, atomization hydraulic pressure is 4.0～5.0MPa, water temperature is 40-50 DEG C；
5th step, is dried process by the alloy powder after dehydration by drying machine, and alloy powder in drying machine does not specifically stop stirring, and dryer temperature is risen to 220 DEG C from 60 DEG C by whipping process；
6th step, sieve powder prepares the copper tin-nickel alloy powder of-325～+350 orders。
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| CN109943749B (en) * | 2017-12-20 | 2020-10-30 | 东莞市精研粉体科技有限公司 | Copper alloy spherical powder material applied to ornament 3D printing head die |
| CN113579237B (en) * | 2021-07-15 | 2023-08-18 | 江苏萌达新材料科技有限公司 | Preparation method for reducing apparent density of copper-tin alloy powder |
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| CN103042220A (en) * | 2012-12-14 | 2013-04-17 | 浦江汇凯粉体科技有限公司 | Method for preparing aluminum bronze powder by water atomization |
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Effective date of registration: 20160525 Address after: Zhongxing Road, Pujiang County, Zhejiang Province Huang Zhai Zhen 322204 Jinhua Zhongshan City Industrial Zone No. 11 Applicant after: ZHEJIANG XUDE NEW MATERIALS CO.,LTD. Address before: Zhongxing Road, Pujiang County, Zhejiang Province Huang Zhai Zhen 322204 Jinhua Zhongshan City Industrial Zone No. 1 Applicant before: PUJIANG HUIKAI POWDER TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A method for preparing copper tin nickel alloy powder by water atomization Effective date of registration: 20231121 Granted publication date: 20160622 Pledgee: Zhejiang Pujiang Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG XUDE NEW MATERIALS CO.,LTD. Registration number: Y2023980066577 |
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