A ball milling process and device for iron-based alloy powder

An iron-based alloy and powder technology, which is applied in the field of metal alloy powder manufacturing, can solve the problems of small output unit power consumption, excessive dust in the operation room, and low drum speed, so as to reduce the power consumption of ball mills, high degree of automation, and energy consumption. The effect of power reduction

Inactive Publication Date: 2011-12-07
陈登刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this process and device are: the low rotation speed of the drum (generally less than 60 rpm) leads to low production efficiency, long cycle between discharging and feeding, and a lot of dust in the operation room
The advantage of the jet mill is that it does not stop the material in and out, and it can be produced continuously. The powder can be collected according to the particle size classification, and there is less dust in the operation room. The disadvantage is that the output is small, and the unit power consumption is 3-5 times higher than other ball mills.

Method used

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  • A ball milling process and device for iron-based alloy powder
  • A ball milling process and device for iron-based alloy powder
  • A ball milling process and device for iron-based alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: A ball milling device for iron-based alloy powder, such as figure 1 , figure 2 , which includes a wet ball mill and a centrifuge 19, the wet ball mill includes a motor and a speed change device 1, a vertical grinding drum 2, a vertical stirring shaft 3, a body 4 and a slurry pump 5, and the body 4 is installed On the vertical grinding drum 2, the motor and the transmission device 1 are installed on the top of the body 4, and the upper end of the vertical stirring shaft 3 is connected to the output end of the motor and the transmission device 1, passes through the body 4 and extends to the end of the vertical grinding drum 2 At the bottom, the lower end of the vertical stirring shaft 3 is provided with 1 to 8 stirring arms 6. The relative installation angle between the stirring arms 6 is 60 to 90°, and the distance between the stirring arms 6 is not less than 50 mm. The vertical stirring shaft 3 and The vertical grinding cylinder 2 is concentric and perpen...

Embodiment 2

[0044] Example 2: The structure of a ball milling device for iron-based alloy powder is the same as in Embodiment 1.

[0045] A ball milling process for iron-based alloy powders, specifically ball milling iron-based alloy powders containing 85%Fe-9.6%Si-5.4%Al, comprising the following steps:

[0046] (1) Add steel balls, ball milling media, and iron-based alloys with a weight ratio of 10:0.8:1.2 to the aforementioned wet ball mill respectively. The feed particle size of the iron-based alloy is 1.2mm. Among them, the vertical The ratio of the inner diameter and height of the grinding cylinder is 1:1.1;

[0047] (2) Start the motor and adjust the speed of the stirring shaft with frequency conversion (the stirring shaft can also be assembled with a motor and a gearbox to achieve a constant speed);

[0048] (3) Start the slurry pump to make the slurry form a circular ball mill from top to bottom, and control the ball milling time for 1.2 hours.

[0049] (4) Start the centrifu...

Embodiment 3

[0055] Example 3: The structure of a ball milling device for iron-based alloy powder is the same as in Embodiment 1.

[0056] A ball milling process for iron-based alloy powders, specifically ball milling iron-based alloy powders containing 83.7%Fe-7.8%Si-4.4%Al-4.1%Sb, comprising the following steps:

[0057] (1) Add steel balls, ball milling media, and iron-based alloys with a weight ratio of 10:1:1.2 to the aforementioned wet ball mill respectively. The feed particle size of the iron-based alloy is 1 mm. Among them, the vertical wet ball mill The ratio of the inner diameter and height of the grinding cylinder is 1:1;

[0058] (2) Start the motor and adjust the speed of the stirring shaft with frequency conversion (the stirring shaft can also be assembled with a motor and a gearbox to achieve a constant speed);

[0059] (3) Start the slurry pump to make the slurry form a circular ball mill from top to bottom, and control the ball milling time for 30 hours.

[0060] (4) S...

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Abstract

The invention discloses a ball milling process and device for iron-based alloy powder. The iron-based alloy powder contains more than 80% iron. It includes a wet ball mill and a centrifuge (19). The wet ball mill includes a motor, a speed change device (1), The vertical mill cylinder (2), the vertical stirring shaft (3), the machine body (4) and the slurry pump (5) are subjected to circular ball milling and centrifugal drying to obtain iron-based alloy powder. The beneficial effects of the present invention are: high degree of automation, easy operation, changing the way of discharging, reducing manual operation, shortening the feeding and discharging cycle by 30-50 minutes, increasing the shift output by 20-50%; the milling efficiency is higher by 2 -5 times, the one-time yield is as high as 70%, and the device can run continuously for more than 96 hours, reducing noise and ball mill power consumption, and there is almost no dust in the operation room, reducing power consumption by 60-80%, thereby greatly reducing production cost.

Description

technical field [0001] The invention belongs to the field of metal alloy powder manufacturing, in particular to a ball milling process and device for iron-based alloy powder, specifically a multi-element iron-based alloy with iron as the main component (Fe>80%) wet ball milled into powder Ball milling process and equipment. Background technique [0002] Iron-based alloys are a type of hard surface materials that are widely used. The biggest feature of this type of material is that they have good comprehensive performance, a wide range of applications, and low material prices. They have been widely used in modern production, especially It is a soft magnetic base alloy containing Fe >80% (wt%), such as Fe-Si-Al, Fe-Si, Fe-Si-B, etc., which are emerging soft magnetic materials in recent years. [0003] The iron-based alloy produced by smelting is made into powder. The existing powder-making process is divided into two types: one is to use the brittle mechanical crushing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04
Inventor 陈登刚
Owner 陈登刚
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