CN104439260B - A kind of manufacture method of two-nozzle atomization composite granule - Google Patents
A kind of manufacture method of two-nozzle atomization composite granule Download PDFInfo
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- CN104439260B CN104439260B CN201410709670.0A CN201410709670A CN104439260B CN 104439260 B CN104439260 B CN 104439260B CN 201410709670 A CN201410709670 A CN 201410709670A CN 104439260 B CN104439260 B CN 104439260B
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Abstract
The present invention relates to cladded type composite powder manufacturing technology field, the manufacture method of a kind of two-nozzle atomization composite granule.The utilization rate of raw material can be ensured to greatest extent, all can realize accurate control as the aluminum powder particle size of kernel powder body and the content of encasement powder.Step 1) adopt aluminium ingot and copper ingot to manufacture copper-clad aluminium powder as raw material, adopt aluminium ingot and nickel ingot to manufacture Al contained Ni as raw material；2) raw material puts in smelting furnace and melts；Regulating smelting furnace parameter: 3) each smelting furnace carries out nebulisation operation after being connected with aerochamber；4) by controlling rate of cooling and the travel distance of atomization powder body, making aluminium powder first spray, then ejection copper powder or nikel powder, after aluminium powder nucleation, the half solidification state liquid pearl bombardment with copper or nickel forms cladded type composite granule.The invention has the beneficial effects as follows: without chemical composition, course of reaction is simple；Manufacture is controlled flexibly, all can realize accurate control as the aluminum powder particle size of kernel powder body and the content of encasement powder.
Description
Technical field
The present invention relates to cladded type composite powder manufacturing technology field, particularly relate to the manufacture method of a kind of two-nozzle atomization composite granule.
Background technology
Composite powder refers to the powder that each granule is made up of two or more heterogeneities, it is divided into mixed type composite powder and cladded type composite powder, cladded type composite granule is different from traditional mixed type composite granule, it has nucleocapsid structure, it is made up of central particles and clad, not homophase in cladded type composite granule can reach intergranular mixing one by one, and general composite granule does not then realize the Homogeneous phase mixing degree in particle rank.
The surface of aluminium powder own is unstable, it is easy to the oxygen generation redox reaction in air, forms fine and close alumina layer, makes activity reduction, and the aluminium powder surface of coated copper or nickel has non-oxidizability, is widely used in different fields.But traditional cladding aluminium powder method such as chemical method, not only to use chemical drugs, have unsafe factor, it is easy to cause environmental pollution, and there is composite powder uneven components, the shortcoming of usability difference.
Summary of the invention
The invention provides the manufacture method of a kind of two-nozzle atomization composite granule, without chemical composition, the utilization rate of raw material can be ensured to greatest extent, and manufacture is controlled flexibly, all can realize accurate control as the aluminum powder particle size of kernel powder body and the content of encasement powder.
In order to achieve the above object, the present invention realizes by the following technical solutions:
The manufacture method of a kind of two-nozzle atomization composite granule, comprises the steps:
1) adopt aluminium ingot and copper ingot to manufacture copper-clad aluminium powder as raw material, adopt aluminium ingot and nickel ingot to manufacture Al contained Ni as raw material；
2) raw material surface being cleared up, the raw material after cleaning is good puts into respectively in special smelting furnace and melts after being completely dried；Regulate and each smelting furnace parameter of monitor in real time:
The pressure of aluminium ingot smelting furnace is 600-700Pa, and temperature is 500-1000 DEG C, oxygen content≤0.6%；
The pressure of copper ingot smelting furnace is 700-1000Pa, and temperature is 900-1500 DEG C, oxygen content≤0.6%；
The pressure of nickel ingot smelting furnace is 700-1200Pa, and temperature is 800-1700 DEG C, oxygen content≤0.6%；
3) regulating atomizing nozzle structure, whole process filling with inert gas, each smelting furnace carries out nebulisation operation after being connected with aerochamber；
4) by controlling rate of cooling and the travel distance of atomization powder body, aluminium powder is made first to spray, then ejection copper powder or nikel powder, wherein:
The weight ratio of aluminium powder and copper powder is 20:(13-17), the weight ratio of aluminium powder and nikel powder is 100:(1-5)；
The granularity of aluminium powder is 10-100um, and the copper powder of outer cladding, nikel powder granularity are 10-100um；
Copper-clad aluminium powder surface copper content 10-95%, the content 0.3-20% of Al contained Ni surface nickel；
After aluminium powder nucleation, the half solidification state liquid pearl bombardment with copper or nickel forms cladded type composite granule；
5) after cooling, cladding powder is collected, encapsulates, weighs, packed.
Described noble gas is liquid argon.
The removing surface of described raw material adopts fully-automatic sprinkling cleaning drying machine, outward appearance no-sundries.
Described aerochamber is two-nozzle atomization room.
Compared with prior art, the invention has the beneficial effects as follows:
1) adopt two-nozzle atomization method to manufacture composite granule, ensure the utilization rate of raw material to greatest extent；
2) without chemical composition, course of reaction is simple, and full safety is pollution-free, does not produce harmful substance；
3) manufacture is controlled flexibly, all can realize accurate control as the aluminum powder particle size of kernel powder body and the content of encasement powder.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of copper cover aluminum powder body in embodiment 1.
Fig. 2 is the scanning electron microscope (SEM) photograph of Al contained Ni body in embodiment 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
The manufacture method of a kind of two-nozzle atomization composite granule of the present invention, comprises the steps:
1) adopt aluminium ingot and copper ingot to manufacture copper-clad aluminium powder as raw material, adopt aluminium ingot and nickel ingot to manufacture Al contained Ni as raw material；
2) raw material surface being cleared up, the raw material after cleaning is good puts into respectively in special smelting furnace and melts after being completely dried；Regulate and each smelting furnace parameter of monitor in real time:
The pressure of aluminium ingot smelting furnace is 600-700Pa, and temperature is 500-1000 DEG C, oxygen content≤0.6%；
The pressure of copper ingot smelting furnace is 700-1000Pa, and temperature is 900-1500 DEG C, oxygen content≤0.6%；
The pressure of nickel ingot smelting furnace is 700-1200Pa, and temperature is 800-1700 DEG C, oxygen content≤0.6%；
3) regulating atomizing nozzle structure, whole process filling with inert gas, each smelting furnace carries out nebulisation operation after being connected with aerochamber；
4) by controlling rate of cooling and the travel distance of atomization powder body, aluminium powder is made first to spray, then ejection copper powder or nikel powder, wherein:
The weight ratio of aluminium powder and copper powder is 20:(13-17), the weight ratio of aluminium powder and nikel powder is 100:(1-5)；
The granularity of aluminium powder is 10-100um, and the copper powder of outer cladding, nikel powder granularity are 10-100um；
Copper-clad aluminium powder surface copper content 10-95%, the content 0.3-20% of Al contained Ni surface nickel；
After aluminium powder nucleation, the half solidification state liquid pearl bombardment with copper or nickel forms cladded type composite granule；
5) after cooling, cladding powder is collected, encapsulates, weighs, packed.
Described noble gas is liquid argon.
The removing surface of described raw material adopts fully-automatic sprinkling cleaning drying machine, outward appearance no-sundries.
Described aerochamber is two-nozzle atomization room.
Following example are carried out under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.In following embodiment, method therefor is conventional method if no special instructions.
[embodiment 1]
Aluminium ingot and copper ingot is adopted to manufacture copper-clad aluminium powder as raw material:
Raw material surface is cleared up, and aluminium ingot after cleaning is good and copper ingot put in aluminium ingot smelting furnace and copper ingot smelting furnace respectively and melt after being completely dried；Regulate and each smelting furnace parameter of monitor in real time:
The pressure of aluminium ingot smelting furnace is 600-700Pa, and temperature is 800 DEG C, oxygen content≤0.6%；
The pressure of copper ingot smelting furnace is 800-900Pa, and temperature is 1000 DEG C, oxygen content≤0.6%；
Regulating atomizing nozzle structure, whole process filling with inert gas, aluminium ingot smelting furnace and copper ingot smelting furnace carry out nebulisation operation after being connected with aerochamber respectively；
The rate of cooling controlling atomization powder body is 0.93 DEG C/S, and travel distance 30m makes aluminium powder first spray, then sprays copper powder；
The weight ratio of aluminium powder and copper powder is 20:15:
The granularity of aluminium powder is 25um, and the copper powder particle size of outer cladding is 20um；
Copper-clad aluminium powder surface copper content 85%；
After cooling, cladding powder is collected, encapsulates, weighs, packed.
As it is shown in figure 1, be the scanning electron microscope (SEM) photograph of the present embodiment finished product copper cover aluminum powder body.
[embodiment 2]
Aluminium ingot and nickel ingot is adopted to manufacture Al contained Ni as raw material:
Raw material surface is cleared up, and aluminium ingot after cleaning is good and nickel ingot put in aluminium ingot smelting furnace and nickel ingot smelting furnace respectively and melt after being completely dried；Regulate and each smelting furnace parameter of monitor in real time:
The pressure of aluminium ingot smelting furnace is 600-700Pa, and temperature is 1000 DEG C, oxygen content≤0.6%；
The pressure of nickel ingot smelting furnace is 1000-1200Pa, and temperature is 1200 DEG C, oxygen content≤0.6%；
Regulating atomizing nozzle structure, whole process filling with inert gas, aluminium ingot smelting furnace and nickel ingot smelting furnace carry out nebulisation operation after being connected with aerochamber respectively；
The rate of cooling controlling atomization powder body is 0.75 DEG C/S, and travel distance 40m makes aluminium powder first spray, then sprays nikel powder；
The weight ratio of aluminium powder and nikel powder is 100:3；
The granularity of aluminium powder is 25um, and the nikel powder granularity of outer cladding is 30um；
Al contained Ni surface nickel content 5%；
After cooling, cladding powder is collected, encapsulates, weighs, packed.
As in figure 2 it is shown, be the scanning electron microscope (SEM) photograph of the present embodiment finished product Al contained Ni body.
Claims (4)
1. the manufacture method of a two-nozzle atomization composite granule, it is characterised in that comprise the steps:
1) adopt aluminium ingot and copper ingot to manufacture copper-clad aluminium powder as raw material, adopt aluminium ingot and nickel ingot to manufacture Al contained Ni as raw material；
2) raw material surface being cleared up, the raw material after cleaning is good puts into respectively in special smelting furnace and melts after being completely dried；Regulate and each smelting furnace parameter of monitor in real time:
The pressure of aluminium ingot smelting furnace is 600-700Pa, and temperature is 500-1000 DEG C, oxygen content≤0.6%；
The pressure of copper ingot smelting furnace is 700-1000Pa, and temperature is 900-1500 DEG C, oxygen content≤0.6%；
The pressure of nickel ingot smelting furnace is 700-1200Pa, and temperature is 800-1700 DEG C, oxygen content≤0.6%；
3) regulating atomizing nozzle structure, whole process filling with inert gas, each smelting furnace carries out nebulisation operation after being connected with aerochamber；
4) by controlling rate of cooling and the travel distance of atomization powder body, aluminium powder is made first to spray, then ejection copper powder or nikel powder, wherein:
The weight ratio of aluminium powder and copper powder is 20:(13-17), the weight ratio of aluminium powder and nikel powder is 100:(1-5)；
The granularity of aluminium powder is 10-100um, and the copper powder of outer cladding, nikel powder granularity are 10-100um；
Copper-clad aluminium powder surface copper content 10-95%, the content 0.3-20% of Al contained Ni surface nickel；
After aluminium powder nucleation, the half solidification state liquid pearl bombardment with copper or nickel forms cladded type composite granule；
5) after cooling, cladding powder is collected, encapsulates, weighs, packed.
2. the manufacture method of a kind of two-nozzle atomization composite granule according to claim 1, it is characterised in that described noble gas is liquid argon.
3. the manufacture method of a kind of two-nozzle atomization composite granule according to claim 1, it is characterised in that the removing surface of described raw material adopts fully-automatic sprinkling cleaning drying machine, outward appearance no-sundries.
4. the manufacture method of a kind of two-nozzle atomization composite granule according to claim 1, it is characterised in that described aerochamber is two-nozzle atomization room.
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| CN106000227B (en) * | 2016-07-13 | 2019-01-25 | 深圳市航盛新材料技术有限公司 | Gas-liquid biphase system for powder system |
| CN106862552B (en) * | 2017-03-13 | 2018-07-24 | 河南省远洋粉体科技股份有限公司 | Spherical super fine aluminium powder surface modifying method and its modified device |
| CN112935268A (en) * | 2021-02-23 | 2021-06-11 | 江苏威拉里新材料科技有限公司 | Preparation process of 3D printing metal powder |
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| CN100409980C (en) * | 2006-09-01 | 2008-08-13 | 鞍钢实业微细铝粉有限公司 | Production technology of two-nozzle atomization aluminium powder |
| EP2514542B1 (en) * | 2009-12-15 | 2016-05-04 | Korea Institute Of Machinery & Materials | Production method and production device for a composite metal powder using the gas spraying method |
| CN101798641B (en) * | 2010-04-15 | 2011-05-11 | 宁波汉博贵金属合金有限公司 | Spray atomization technology of silver tin oxide material |
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