Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing composite soft magnetic material exhibiting excellent magnetic characteristics, high strength and low iron loss

A soft magnetic material and soft magnetic technology, which is applied in the fields of inductance/transformer/magnet manufacturing, inorganic material magnetism, thin material processing, etc., can solve the problems of low strength and low durability

Inactive Publication Date: 2006-12-20
MITSUBISHI MATERIALS PMG CORP
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Composite soft magnetic materials using this water glass as a binder have lower strength than composite soft magnetic materials using organic resins as a binder, and are softened by absorbing moisture, so durability is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] As raw materials, a phosphoric acid film forming soft magnetic powder obtained by subjecting pure iron powder to phosphoric acid treatment to form a phosphoric acid film, and a liquid silicone resin were prepared. A liquid silicone resin was added to the phosphoric acid film-forming soft magnetic powder in the ratio shown in Table 1, and mixed in the air to prepare a silicone resin film-forming soft magnetic powder having a silicone resin film with an average thickness shown in Table 1.

[0030] category

[0031] This silicone resin film forms soft magnetic powder and heats to the temperature shown in table 2~3, and the silicone resin film that has been heated forms soft magnetic powder in the mold that has been heated to the temperature shown in table 2~3, with table 2~ Press compression molding shown in 3 to make a molded body, and then heat the molded body to the temperature shown in Tables 2 to 3 in the atmosphere, and keep the time shown in Tables 2 to 3 t...

Embodiment 2

[0038] As raw materials, pure iron powder and liquid silicone resin were prepared. Liquid silicone resin was added to the pure iron powder in the ratio shown in Table 4, and mixed in the air to prepare a silicone resin film-forming soft magnetic powder having a silicone resin film with an average thickness shown in Table 4.

[0039] category

[0040] The soft magnetic powder formed by the silicone resin film in Table 4 is heated to the temperature shown in Tables 5 to 6, and the heated silicone resin film is used to form the soft magnetic powder and filled in the mold heated to the temperature shown in Tables 5 to 6. 5 to 6 show the pressure compression molding, thereby making a molded body, and then the molded body is heated to the temperature shown in Tables 5 to 6 in the atmosphere, and the time shown in Tables 5 to 6 is maintained to implement the method 18 to 6 of the present invention. 27 and comparative methods 8 to 13, a soft magnetic test piece having the fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

A method for producing a composite soft magnetic material exhibiting excellent magnetic characteristics, a high strength and a low iron, which comprises the steps of forming a silicone resin coating film having an extremely low thickness of 0.1 to 5 mum on the surface of a soft magnetic powder or a soft magnetic powder coated with a phosphate coating film, to prepare a soft magnetic powder having a silicone resin coating film formed thereon, heating the soft magnetic powder having a silicone resin coating film to a temperature of from room temperature to 150 C, filling a mold heated to a temperature of 100 to 150 C with the soft magnetic powder having a silicone resin coating film and being heated to a temperature of from room temperature to 150 C, subjecting the soft magnetic powder having a silicone resin coating film to a green powder molding under a molding pressure of 600 to 1500 MPa, and firing the resulting molded article at a temperature of 400 to 600 C.

Description

technical field [0001] The invention relates to a manufacturing method of a composite soft magnetic material with excellent magnetic characteristics, high strength and low iron loss. The composite soft magnetic material is used in the manufacture of injector parts, ignition parts, magnetic cores for solenoid valves, magnetic cores for motors, and the like. Background technique [0002] Generally, iron powder, Fe-Si-based iron-based soft magnetic alloy powder, Fe-Al-based iron-based soft magnetic alloy powder, Fe-Si-Al-based iron-based soft magnetic alloy powder, Fe-Cr-based Iron-based soft magnetic alloy powder, Ni-based soft magnetic alloy powder or Fe-Co-based soft magnetic alloy powder, etc. [0003] It is known to use pure iron powder as the iron powder. [0004] As the Fe-Si series iron-based soft magnetic alloy powder, it is known to use Fe-Si series iron-based soft magnetic alloy powder containing 0.1 to 10% Si, and the remainder is composed of Fe and unavoidable im...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/26H01F1/33H01F41/02B22F3/00B22F1/102B22F1/16
CPCB22F1/02Y10T428/12014H01F41/0246B22F2998/10H01F1/26B22F1/16B22F1/102B22F3/02B22F3/10
Inventor 宫原正久森本耕一郎
Owner MITSUBISHI MATERIALS PMG CORP