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Method for preparing granules of nonoxidation stannic balls and forming machine used

A tin oxide ball and forming machine technology, applied in the field of forming machine, tin or tin alloy ball particles, can solve the problems of lower product quality, low production efficiency, poor sphericity of tin particles, etc., and achieve simple equipment and reasonable structure , the effect of short process

Inactive Publication Date: 2003-07-23
重庆工学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition to the low production efficiency of the known method, what is more serious is that the sphericity of the tin particles produced is poor, and there are many particle conglomerates, which cannot avoid surface oxidation.
Due to the large specific surface of the particles, the surface oxidation phenomenon directly reduces the product quality, resulting in many irreparable use defects, seriously affecting its use range
This kind of low-sphericity tin particles that cannot avoid surface oxidation is not suitable for precision electroplating, fine chemical products, electronic assembly, chemical reagents and additives

Method used

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  • Method for preparing granules of nonoxidation stannic balls and forming machine used
  • Method for preparing granules of nonoxidation stannic balls and forming machine used

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Embodiment Construction

[0023] see figure 1 , The structure of the molding machine designed by the inventive method is as follows: the upper section is a melting furnace, the middle section is a drip disperser, and the lower section is a spheroidizing former. The melting furnace, droplet disperser and spheroidizer are all circular, and their centers are on the same axis in the vertical direction.

[0024] In the melting furnace part, a controllable electric heating wire 10 is provided on the side and bottom of the container shell 17, and an insulation layer 9 is provided on the outside of the electric heating wire 10, and a controllable valve 11 is provided on the bottom of the container shell 17 , A conduit 18 is connected below the valve 11, a furnace cover 12 is arranged on the top of the container shell 17, and air inlet and outlet holes 13, 14 and a thermometer 15 are arranged on the furnace cover.

[0025] The droplet disperser part is provided with a controllable electric heating wire 5 on th...

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Abstract

A process for preparing unoxidized tin particles includes in the protecting atmosphere, introducing molten tin to a container whose bottom has uniform multiple fine holes, vertically vibrating the container to drop down in oil bath, cooling to form small balls, washing and drying. Its shaping machine is composed of smelting furnace, dropper, and sphericizing shaper. Its advantages are high productivity and high quality.

Description

technical field [0001] The invention relates to the manufacturing technology of low-melting-point metal particles, in particular to a method for preparing non-oxidized tin or tin alloy spherical particles and a molding machine used. Background technique [0002] Spherical metal particles are well known to have a wide variety of uses. At present, tin particles with an equivalent spherical diameter of 0.5-4.0 mm are generally produced by the metal liquid phase infusion method, specifically, the metal is melted and dropped into a cooling liquid through a drip tube or a drip tray to form it. In addition to the low production efficiency of the known method, what is more serious is that the sphericity of the tin particles produced is poor, and there are many particle conglomerates, which cannot avoid surface oxidation. Due to the large specific surface of the particles, the surface oxidation phenomenon directly reduces the product quality, resulting in many irreparable use defect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 杜长华陈方黄伟九张津
Owner 重庆工学院
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