Title:
MAGNETIZATION DEVICE
Document Type and Number:
Japanese Patent JP2021132175
Kind Code:
A
Abstract:
To provide a magnetization device which is magnetized to one part of a small diameter wire of a stainless steel whose diameter is 1.5 mm or less in a longitudinal direction.SOLUTION: A magnetization device comprises: a magnetization yoke 10 magnetizing a workpiece made of a power supply part generating a constant current and a magnetic body; and a controller controlling a temperature of an electromagnetic coil 12 of the magnetization yoke. The workpiece has a diameter of 0.1 to 1.5 mm and a length of 100 mm or larger. The length of a magnet part to be saturated and magnetized is 1 to 8 mm. The magnetization yoke is made of a bobbin 11 and the electromagnetic coil. The bobbin comprises a hollow pipe of an inner diameter of 0.3 to 2.0 mm. The electromagnetic coil is formed by an enamel wire of a diameter of 10 to 50 μm with a coil width of 1 to 8.4 mm so as to be turned in 500 to 3,000 times with a winding wire density of 400 times/mm or more. In addition, the magnetization yoke comprises two magnetic field distribution shapers made of a permanent magnet ring 141 magnetized in an axial direction of the bobbin on both outer sides of the bobbin and a yoke component 142 surrounding them.SELECTED DRAWING: Figure 7
Inventors:
MOTOKURA YOSHINOBU
MOTOKURA SHIMPEI
KIKUCHI NAGAYOSHI
MOTOKURA SHIMPEI
KIKUCHI NAGAYOSHI
Application Number:
JP2020028000A
Publication Date:
September 09, 2021
Filing Date:
February 21, 2020
Export Citation:
Assignee:
MAGNE DESIGN CORP
International Classes:
H01F13/00