Radiation orientation magnetic ring forming equipment and method
A technology of radiation orientation and forming equipment, which is applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve problems such as the difficulty of preparing radiation rings, and achieve the effects of uniform surface magnetism, high residual magnetism, and low loss of magnetic properties
Active Publication Date: 2015-06-17
BEIJING ZHONG KE SAN HUAN HI TECH
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[0004] However, the above-mentioned patents face many difficulties when preparing the radiation ring
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[0015] like Figure 2-4 As shown, the molding equipment of the present invention includes: a mold casing 1 , a magnetically permeable mold core 2 and a pole head 4 . The mold casing 1 is coaxial with the mold core 2, and a mold cavity 3 is formed between them. The mold cavity 3 is used for filling magnetic powder, and the loaded magnetic powder is pressed into a magnetic ring (radiation ring).
[0016] The part of the pole head 4 close to the magnetic ring is parabolically contracted, that is, the closer to the magnetic ring, the smaller the width of the pole head 4 . This shape of the pole head 4 facilitates the convergence of the magnetic field lines to the tip of the pole head 4 . like image 3 As shown, the width A of the tip of the pole head 4 is preferably 0.5 to 3 mm. The distance B between the tip of the pole head 4 and the mold case 1 is preferably 0.5-4 mm, which makes it possible to generate a very strong orientation magnetic field near the pole head 4 only by u...
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Abstract
The invention provides radiation orientation magnetic ring forming equipment and method. The equipment comprises a magnetic conductive die core, a die sleeve and a polar head. The outer peripheral surface of the die core is cylindrical. The die sleeve is in a barrel shape and coaxial with the die core, and an annular die cavity is formed between the inner peripheral surface of the die sleeve and the outer peripheral surface of the die core. The polar head is located on the outer radial side of the outer peripheral surface of the die sleeve and used for generating an orientation magnetic field. The orientation magnetic field accounts for more than 50% of the annular die cavity within 360 degrees. A radiation ring manufactured through the equipment and method is low in magnetic performance loss, high in residual magnetism, even in surface magnetism and matched with an ideal model, the orientation direction is radial, the geometric center is totally consistent with the magnetic field center, and material loading and material taking are convenient to conduct.
Description
technical field [0001] The invention relates to a radiation orientation magnetic ring forming equipment and method. Background technique [0002] The radiation orientation magnetic ring is referred to as the radiation ring, and its magnetization direction is radial along the radial direction of the magnetic ring, and N-level and S-level are respectively formed on the inner and outer sides of the magnetic ring. Radiation rings are widely used in the motor industry. One of the key technologies for preparing radiant rings is pressing and orienting the magnetic powder. [0003] Patents 200710106670.1 and 200810066269.4 disclose a method and equipment for forming a radiant ring. They produce radiating rings with relative rotational movement between poles and rings. [0004] However, the above-mentioned patents face many difficulties when preparing the radiation ring. For example, if the relative rotation speed is too high, the coercive force will be too large and the residual...
Claims
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IPC IPC(8): H01F41/02B22F3/03
Inventor 侯德柱吴晓平王东明王进东
Owner BEIJING ZHONG KE SAN HUAN HI TECH