CN1657203A - Nonferrous metal powder - Google Patents
Nonferrous metal powder Download PDFInfo
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- CN1657203A CN1657203A CN 200410079654 CN200410079654A CN1657203A CN 1657203 A CN1657203 A CN 1657203A CN 200410079654 CN200410079654 CN 200410079654 CN 200410079654 A CN200410079654 A CN 200410079654A CN 1657203 A CN1657203 A CN 1657203A
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Abstract
A process for preparing the low-smelting-point (lower than 500 deg.C) non-ferrous metal and alloy powder (3-100 mm spherical particles) includes such steps as smelting, delivering the molten liquid to an atomizer via a sealed heated pipe, high-speed centrifugal atomizing, fast cooling, rounding and solidifying. Its apparatus is composed of smelting furnace, high-speed centrifugal atmozer and powder collector.
Description
Technical field
The present invention relates to non-ferrous metal powder preparation technology and device, be specifically related to 500 ℃ of following low melting point non-ferrous metals and alloy powder " high speed centrifugation atomization " preparation technology and device.
Background technology
The application model of non-ferrous metal and alloy powder is very extensive, is the important foundation raw material of industries such as chemical industry, metallurgy, machine-building, electronics industry.Its preparation method adopts " gas atomization " to reach " ultrasonic atomization method " at present mostly.Though it is big that gas atomization prepares non-ferrous metal powder output, particle size distribution is wide, and the product pattern is irregular, the oxygen content height; Though the narrow and hypoxic product of ultrasonic atomization method energy prepared sizes distribution yields poorly.
Summary of the invention
The object of the present invention is to provide a kind of output height, the non-ferrous metal powder preparation technology that Granularity Distribution is narrow, oxygen content is low and pattern is regular.Be particularly useful for making non-ferrous metal and alloy powder that fusing point is lower than 500 ℃, as Sn, Pb, Bi, Zn, Sb and Sn-Pb, Sn-Sb, Sn-Bi, Bi-Sb, Sn-Pb-Bi, Sn-Ag-Bi etc.
" high speed centrifugation atomization " provided by the invention produces low melting point non-ferrous metal and alloy powder preparation technology mainly by metal and alloy melting, the high speed centrifugation atomizing, and chilling is received operations compositions such as circle, solidification forming.After it is characterized in that non-ferrous metal and alloy melting, under certain atmosphere, temperature, through airtight heating carrier pipe fused solution is delivered on the atomizing disk, fused solution flies away from disk and is atomized into fine liquid grain under the effect of high speed centrifugation power, powder round through cooling off rapidly, receiving, that be frozen into required pattern.
Preparation technology's essential condition provided by the present invention is as follows:
1, melting process: do not need any special atmosphere protection during fusing.
2, high speed centrifugation atomizing operation:, can make the powder of heterogeneity, different-shape (spherical, class is spherical, rod is let down shape etc.) by parameters such as control atomization temperature, rotating speed and atomizing atmosphere.Its main technologic parameters is:
(1) atomizing rotating speed: per minute 10000～40000 changes
(2) atomization temperature: overheated 30～70 ℃ on the metal or alloy fusing point
(3) control of atmosphere: oxygen content is at 20～80ppm
According to above-mentioned preparation technology, high speed centrifugation atomising device used in the present invention is made up of melting furnace, high speed centrifugation atomizer, powder collecting bucket.It is characterized in that fused solution being delivered to the high speed centrifugation atomizer from melting furnace, flow into automatically by conducting oneself with dignity on the atomizing disk that rotates at a high speed and be atomized into shape by the liquid pushing tube of a controlled heat tracing layer.
Described melting furnace part: circumference has heat-insulation layer, and the bottom is provided with controlled electric furnace, and temperature-control heat couple and controlled bleeder valve are equipped with in inside, and bleeder valve is connected the outer liquid pushing tube that controlled heat tracing layer is arranged by tap hole, and the end of liquid pushing tube is provided with controlled leakage mouth.
Described high speed centrifugation atomizer part: the high speed disk diameter is 30～60mm, is to be driven by special high-speed motor, and rotating speed is at 10000～40000r/min, and according to the difference of prepared powder, rotating speed is adjustable; The atomizer housing is diameter of phi 3000mm, the cone of high 3000mm, and the bottom connects powder collecting bucket.
Compared with prior art, the present invention has the following advantages:
1, Technological adaptability is strong, by adjusting diameter, the rotating speed of high speed atomizing disk, atomizing atmosphere, melting liquid atomization temperature, flow velocity, parameter such as atomizing atmosphere etc. can prepare the different grain size of different components, the powder of sphere or other patterns, low, the narrow particle size distribution of product oxygen content.
2, because centrifugal atomizing speed is fast, production efficiency and output height, output 120～170kg/h.
3, during powder by atomization, metal and alloy superheat low (being lower than 50 ℃), power consumption low (600kwh/t) and the gas atomization degree of superheat is 100～150 ℃.
4, whole powder by atomization process is carried out in closed container, noise＜70 decibel, and do not have dust emission, be a kind of technology of efficient and environment-friendly type.
Description of drawings
Accompanying drawing is a high speed centrifugation atomising device schematic diagram of the present invention
Referring to accompanying drawing, the high speed centrifugation atomising device that invention is adopted mainly is made up of melting furnace, high speed centrifugation atomizer two parts.
Melting furnace part: be contained at the circumference of melting pot 1 and have insulation material 2, the bottom is provided with controlled electric furnace 4, temperature-control heat couple 3 and controlled bleeder valve 11 are housed in the inside of melting pot 1, bleeder valve 11 is connected the outer liquid pushing tube 14 that controlled heat tracing layer 15 is arranged by tap hole 13, and the end of liquid pushing tube 14 is provided with controlled leakage mouth 20.
High speed centrifugation atomizer part: controlled leakage mouth 20 puts in the atomizing bucket 5, high speed electric machine support 8 is provided with adjustable speed high-speed motor 7, atomizing disk 6 is arranged on 7, atomizing bucket 5 housings are provided with the exhaust tube 19 and the blast pipe 17 of charged magnet valve 16,18, and there are discharge butterfly valve 9 and powder collecting bucket 10 in atomizing bucket 5 housing lower ends.
The specific embodiment
The present invention can produce non-ferrous metal and the alloy powder that fusing point is lower than 500 ℃, as metal and alloy powders such as Sn, Pb, Bi, Zn, Sb and Sn-Pb, Sn-Sb, Sn-Bi, Bi-Sb, Sn-Pb-Bi, Sn-Ag-Bi, the concrete alloyage as requested that only needs, adjust atomization parameter, diameter, rotating speed as the high speed atomizing disk, melting liquid atomization temperature, flow velocity, atomizing atmosphere etc., get final product the powder product of required different-grain diameter, different-shape (spherical, rod let down shape).
The present invention further specifies by following examples.
Embodiment one
Utilize above-mentioned fuel pulverizing plant, the preparation composition is that the sphere weldering of 63%Sn, 37%Pb divides, control and the main technologic parameters of adjusting are: 230～250 ℃ of fusion temperatures, 210～230 ℃ of atomization temperatures, melting flow quantity: 150kg/h during atomizing, atomizing disk diameter 50mm, atomizing rotating speed 20000～40000r/min, oxygen atmosphere: 20～60ppm.
Have higher out of roundness after testing by the prepared product of above-mentioned parameter, the surface-brightening zero defect, oxygen content:＜50ppm, its size distribution is as follows:
％＜ 10 25 50 75 90
um 12.96 25.06 37.39 50.78 66.86
Embodiment two
Producing composition by the method for embodiment one and step is 97%Bi3%Sb, and metal and alloy powders such as 58%Bi42%Sn only need the fusion temperature of alloyage as requested overheated 30～70 ℃, all the other parameter constants.Products obtained therefrom granularity and distribution, pattern, oxygen content etc. are identical with embodiment one.
Claims (8)
1, a kind of nonferrous metal powder is characterized in that this technology by metal molten, the high speed centrifugation atomizing, and chilling is received circle, solidification forming technology is formed.
2, preparation technology according to claim 1 is characterized in that the high speed centrifugation atomization speed is that per minute 10000～40000 changes, and atomization temperature is overheated 30～70 ℃ on the metal or alloy fusing point.
3, preparation technology according to claim 1, it is characterized in that by adjusting diameter, the rotating speed of high speed atomizing disk, atmosphere in the atomizer, parameters such as melting liquid atomization temperature, flow velocity, can prepare sphere, class sphere, the rod different-shapes such as shape of leting down, the powder of different-grain diameter; Wherein oxygen atmosphere content is 20～80ppm in the atomizer.
4, a kind of high speed centrifugation atomising device for preparing the non-ferrous metal powder is characterized in that being made up of melting furnace, high speed centrifugation atomizer, powder collecting bucket.
5,, it is characterized in that described atomizing high speed disk is that high-speed motor by rotating speed＞20000r/min is driven, and rotating speed is adjustable according to right 4 described high speed centrifugation atomising devices.
6, according to right 4 described high speed centrifugation atomising devices, the diameter that it is characterized in that described atomizing disk is 30～60mm.
7,, it is characterized in that design has an airtight heating carrier pipe, the reliable gravity of fused solution to flow into automatically on the atomizing disk of rotation at a high speed in the atomizer according to right 4 described high speed centrifugation atomising devices.
8,, it is characterized in that the atomizer housing is diameter 3000mm, high 3000mm cone according to right 4 described high speed centrifugation atomising devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410079654 CN1657203A (en) | 2004-12-31 | 2004-12-31 | Nonferrous metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410079654 CN1657203A (en) | 2004-12-31 | 2004-12-31 | Nonferrous metal powder |
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| CN1657203A true CN1657203A (en) | 2005-08-24 |
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| CN 200410079654 Pending CN1657203A (en) | 2004-12-31 | 2004-12-31 | Nonferrous metal powder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949650A (en) * | 2014-04-25 | 2014-07-30 | 云南锡业集团有限责任公司研究设计院 | Preparation method of columnar zinc powder |
| CN105478789A (en) * | 2015-12-29 | 2016-04-13 | 深圳市中金岭南科技有限公司 | Preparation method of spherical and spheroidal zinc powder |
| CN106077687A (en) * | 2016-08-24 | 2016-11-09 | 横店集团东磁股份有限公司 | A kind of device preparing spindle alloy powder electromagnetic wave absorbent and its implementation |
| CN107812954A (en) * | 2017-12-01 | 2018-03-20 | 深圳市中金岭南科技有限公司 | The preparation method and its preparation facilities of a kind of copper powder |
| CN108213406A (en) * | 2018-01-04 | 2018-06-29 | 北京理工大学 | A kind of high physical activity spherical shape atomized aluminum zinc non-crystaline amorphous metal powder and preparation method thereof |
| CN108237230A (en) * | 2018-04-26 | 2018-07-03 | 苏州海森伯格环保科技有限公司 | A kind of intelligence atomising device |
| CN108247076A (en) * | 2018-04-26 | 2018-07-06 | 苏州海森伯格环保科技有限公司 | A kind of atomising device |
| CN108274011A (en) * | 2018-03-06 | 2018-07-13 | 北京工业大学 | A kind of preparation method with bimodal distribution metal powder suitable for 3D printing |
-
2004
- 2004-12-31 CN CN 200410079654 patent/CN1657203A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949650A (en) * | 2014-04-25 | 2014-07-30 | 云南锡业集团有限责任公司研究设计院 | Preparation method of columnar zinc powder |
| CN105478789A (en) * | 2015-12-29 | 2016-04-13 | 深圳市中金岭南科技有限公司 | Preparation method of spherical and spheroidal zinc powder |
| CN106077687A (en) * | 2016-08-24 | 2016-11-09 | 横店集团东磁股份有限公司 | A kind of device preparing spindle alloy powder electromagnetic wave absorbent and its implementation |
| CN106077687B (en) * | 2016-08-24 | 2018-06-29 | 横店集团东磁股份有限公司 | A kind of device and its implementation for preparing spindle alloy powder electromagnetic wave absorbent |
| CN107812954B (en) * | 2017-12-01 | 2020-08-21 | 深圳市中金岭南科技有限公司 | Preparation method and preparation device of copper powder |
| CN107812954A (en) * | 2017-12-01 | 2018-03-20 | 深圳市中金岭南科技有限公司 | The preparation method and its preparation facilities of a kind of copper powder |
| CN108213406A (en) * | 2018-01-04 | 2018-06-29 | 北京理工大学 | A kind of high physical activity spherical shape atomized aluminum zinc non-crystaline amorphous metal powder and preparation method thereof |
| CN108213406B (en) * | 2018-01-04 | 2021-02-26 | 北京理工大学 | Spherical atomized aluminum-zinc amorphous alloy powder and preparation method thereof |
| CN108274011B (en) * | 2018-03-06 | 2021-05-14 | 北京工业大学 | Preparation method of metal powder with bimodal distribution suitable for 3D printing |
| CN108274011A (en) * | 2018-03-06 | 2018-07-13 | 北京工业大学 | A kind of preparation method with bimodal distribution metal powder suitable for 3D printing |
| CN108237230A (en) * | 2018-04-26 | 2018-07-03 | 苏州海森伯格环保科技有限公司 | A kind of intelligence atomising device |
| CN108247076B (en) * | 2018-04-26 | 2019-06-11 | 易安达仪器科技(江苏)有限公司 | A kind of atomising device |
| CN108237230B (en) * | 2018-04-26 | 2019-04-19 | 福州超一工艺品有限公司 | A kind of intelligence atomising device |
| CN108247076A (en) * | 2018-04-26 | 2018-07-06 | 苏州海森伯格环保科技有限公司 | A kind of atomising device |
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