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Manufacturing method of spherical bronze alloy powder

A technology of bronze alloy and manufacturing method, which is applied in the field of manufacturing spherical bronze alloy powder, can solve the problems of high sphericity, large gas consumption, and narrow particle size distribution of spherical alloy powder, and achieve high powder sphericity and simple process method , good surface quality

Active Publication Date: 2015-04-08
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent application number CN201210389646.4 discloses the production method of submicron tin-copper alloy powder. The spherical alloy powder prepared by evaporation principle has high sphericity and narrow particle size distribution, but the method requires high equipment and is collected by airflow cooling. The consumption of gas is large, and there is a problem with the emission of particulate gas

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  • Manufacturing method of spherical bronze alloy powder
  • Manufacturing method of spherical bronze alloy powder
  • Manufacturing method of spherical bronze alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation of tin bronze spherical alloy powder for brazing (spray) welding, at first, obtains copper-tin alloy (Cu 60 sn 40 , the subscript is the weight percentage), and the copper-tin alloy is mechanically crushed to obtain a powder with an average size of about 10 μm as a raw material. Take 1 gram of copper-tin alloy powder and graphene powder with a size less than about 1 μm, and mix them uniformly after mechanical stirring at a ratio of 5:1 by weight.

[0023] Put the mixed copper-tin alloy / graphene mixed powder into the alumina crucible, put the crucible into the non-heating zone of the annealing furnace, and evacuate to 6×10 -3 Pa, heat the heating zone of the annealing furnace to 800°C, push the crucible containing the copper-tin alloy / graphene powder into the heating zone of 800°C, and after holding the heat for 5 minutes, pull the crucible containing the copper-tin alloy / graphene powder Leave the heating zone to cool.

[0024] The copper-tin alloy / gra...

Embodiment 2

[0026] The preparation of the bronze spherical alloy powder containing 10% by mass of tin, at first, adopts irregular industrial bronze powder with an average size of about 30 μm as a raw material. Take 1 gram of bronze alloy powder and graphene powder whose size is smaller than about 5:1 by weight, mix them evenly after mechanical stirring.

[0027] Put the mixed copper-tin alloy / graphene mixed powder into the alumina crucible, put the crucible into the non-heating zone of the annealing furnace, and evacuate to 6×10 -3Pa, heat the heating zone of the annealing furnace to 1050°C, push the crucible containing the copper-tin alloy / graphene powder into the heating zone of 1050°C, and after holding for 5 minutes, pull the crucible containing the copper-tin alloy / graphene powder Leave the heating zone to cool.

[0028] The alloy / graphene mixed powder is soaked in water, and the copper-tin alloy micron-spherical powder is obtained by ultrasonic cleaning. figure 2 It is a scanning...

Embodiment 3

[0030] Bronze spherical alloy powder is produced by metal oxide. Weigh copper oxide and tin oxide powder according to the mass percentage of required bronze alloy components (Cu:Sn=90:10wt%) and mix evenly, take 1 gram of copper oxide and tin oxide mixed powder and nano Graphite powder, according to the mass ratio of 1:1, mechanically stirred, and mixed evenly again.

[0031] Put the mixed powder of the above-mentioned metal oxide / nano-graphite powder into an alumina crucible, put the crucible into the heating zone of the annealing furnace, and evacuate to 6×10 -3 Pa, pass in hydrogen gas 0.02MPa, heat to 450°C for reduction, and realize pre-diffusion alloying at the same time, after holding for 60 minutes, vacuumize to 10Pa, heat the heating zone of the annealing furnace to 1050°C, hold for 10 minutes, and the obtained The crucible of copper-tin alloy / nano-graphite powder is pulled out of the heating zone for cooling.

[0032] The alloy / graphene mixed powder is soaked in wa...

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Abstract

Disclosed is a manufacturing method of spherical bronze alloy powder. The manufacturing method includes steps of preparing bronze alloy powder; preparing uniform mixture of the alloy powder with carbon powder or ceramic powder; subjecting the uniform mixture to thermal treatment so as to melt bronze alloy and solidify to obtain metallic balls; separating the carbon powder or ceramic powder to obtain spherical alloy powder. The component of the bronze alloy includes CudSnaXbYc according to the weight percentage, wherein X indicates one or several kinds of Al, Be, Zn, Ni, Cr, Mn, Co, F3, Ag, Sb and Pb, Y indicates one or several kinds of Li, Ti, In, RE, P, Si and B, the weight percentage of a, b and c is 1-40, 0-30 and 0-2 respectively, and the balance is the weight percentage of d. The manufacturing method of the spherical bronze alloy powder is simple and applicable to bronze alloy added to multi-element intensified elements.

Description

technical field [0001] The invention relates to a method for manufacturing spherical bronze alloy powder suitable for metal 3D printing, spraying (brazing) welding metal powder, self-lubricating bearing material, wear-resistant material, metal filter, powder metallurgy and other fields. Background technique [0002] Spherical bronze alloy powder is mainly used in the manufacture of spray (brazing) welding materials, metal filters, porous components, high-speed electrified rail contact materials, and wear-resistant materials due to its wear resistance and corrosion resistance, low temperature toughness, good electrical and thermal conductivity, and excellent weldability. , Self-lubricating bearings, widely used in aero-engines, electronic power, surface modification, transportation, mechanical engineering, national defense and military industries. With the development of powder metallurgy industry technology, the quality requirements of bronze alloy powder are getting higher ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04
Inventor 唐少龙雷成龙程振之黄海富都有为
Owner NANJING UNIV
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