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Soft magnetic ferrite blank carving processing process

A processing technology and green body technology, which is applied in the field of soft ferrite green body engraving and processing, can solve the problems of surface falling off, surface smoothness, and affecting use, so as to reduce production cost and production time Effect

Active Publication Date: 2018-02-09
NANTONG HUAXING MAGNETIC MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Now the spindle motor speed of the CNC engraving machine on the market is between 10,000 and 20,000 revolutions, and the processing of soft magnetic green body, even if it is used to 20,000 revolutions, the smoothness of the surface can not meet the customer's requirements. There are pieces on the surface, which will affect its use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. The soft magnetic material green body is made through the following steps:

[0044] (1) Mixing raw materials: 51.0 ± 0.3% of ferric oxide, 37.5 ± 0.2% of manganese oxide, and 11.5 ± 0.2% of zinc oxide are mixed in moles as percentage units;

[0045] (2) Granulation: Mix the three raw materials evenly in pure water, add polyvinyl alcohol, and then dry them through a spray tower to form granules;

[0046] (3) Pre-burning: Pre-burning is carried out through a rotary kiln, and the temperature is controlled at 850-950°C;

[0047] (4) Sand milling: In this process, add the additives required by the formula to the sand mill, that is, add impurities at one time, mix and grind with the raw materials; the added additives and molar percentages are CaCO 3 0.035%, Co 2 o 3 0.3%, Nb 2 o 5 0.04%, ZrO 0.04%;

[0048] (5) Spray granulation: same as step (2), by adjusting the size of nozzle hole and swirl plate, obtain the powder granule material that is beneficial to compress...

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PUM

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Abstract

The invention relates to a soft magnetic blank carving processing process. Production and processing of a soft magnetic material is performed through a numerical control carving machine; a cutter milling cutter has single number of blades with an angle of 60 degree; and a spindle motor of the numerical control carving machine is 80,000 turns in rotary speed. By virtue of the method, the manufacturing period can be shortened, the manufacturing cost can be lowered, and blank cracking also can be avoided; and by virtue of adjustment of the rotary speed of the motor, the difficulty of block falling-off and unqualified surface smoothness in the processing process can be relieved.

Description

technical field [0001] The invention relates to an engraving process of a soft magnetic green body, in particular to a method for engraving a soft magnetic ferrite green body in the electronic magnetic material industry. Background technique [0002] Soft ferrite is a new type of non-metallic magnetic material that has been developed rapidly in the past 30 years. It is widely used and is mostly used to make magnetic cores. The conventional processing technology is first hand engraving, the accuracy cannot be guaranteed, and the second is to open the mold first, press and shape according to the mold, the production cycle is long and the mold cost is high. The existing processing methods of soft magnetic materials are mainly compression molding with moulds, but the production cycle of this method is long (about 1 month) and the cost is high. For example, CNC engraving and milling machine is used for processing, but the processing method of ordinary CNC milling machine cannot ...

Claims

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Application Information

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IPC IPC(8): H01F1/34C04B35/26B44C1/22
CPCB44C1/225C04B35/2658H01F1/34
Inventor 杨甫进
Owner NANTONG HUAXING MAGNETIC MATERIAL
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