Insulated Powder

Insulated Powder Technical Publications

201. Soft Magnetic Material for A.C. Applications Soft magnetic material using powder metallurgical techniques are gaining wide spread use in motors, compressors and other rotating devices. A high-density soft magnetic material (AncorLam) was developed with excellent induction and coercive force. A green density of 7.55g/cm3 at 13-tons/cm2, coercivity of 310 A/m, resistivity of 8000 micro-ohm cm, and a green strength of 100MPa are achieved. This presentation will discuss application of this material in motors, in general, operating at frequencies above 400 Hertz.

122. Advances, Applications and Opportunities for Coated Iron Powder for Electromagnetic Applications This paper reviews how the advances made in iron coating technology over the last fifteen years can be applied to a variety of common electromagnetic applications. The properties of several traditional alloys are reviewed. In addition, properties of newly developed insulated materials are also presented. Specific application examples include use of coated iron powder in brushless DC motors. Opportunities for application of insulated material in components for the 42V automotive electrical system are also outlined.

61. Application of High Performance Material Processing - Electromagnetic Products The use of powder metallurgy (P/M) parts in AC applications is limited by the inability to reduce the total core loss of the P/M components to levels achieved with conventional laminations. The use of iron powder polymer composites has proven successful in high frequency applications such as ignition coils and high-speed motors. Broader application of P/M in AC applications will require a metedal that will provide superior magnetic performance at low frequencies. This paper will discuss the use of high performance materials for DC applications (in particular, alloys of iron and silicon) as well as the use of insulated powders for both high and Low frequency applications.

47. The Manufacture of Electromagnetic Components by the Powder Metallurgy Process The powder metallurgy process provides the ability to manufacture net shape parts from a variety of materials in a cost effective manner. A market segment that has exhibited the ability to take advantage of powder metallurgy's flexibility has been in electromagnetic applications. This area has shown significant growth in the past decade that should continue for the foreseeable future.

This paper will discuss materials and processes that have proven successful in several electromagnetic applications. Both sintered materials for DC type applications and insulated materials for AC applications will be reviewed along with appropriate processing techniques for each. Specific applications for both materials will be presented.

44. Powder Metallurgy Materials for AC Magnetic Applications Ancorsteel Insulated Powders provide the ability to utilize ferrous powder metallurgy materials in alternating magnetic field applications. These materials, unlike sintered components, offer the ability to control eddy current generation at high frequencies. The development process involved in the evolution of these materials is reviewed along with magnetic and physical properties. Potential part applications are presented with special emphasis placed on utilizing powder metallurgy's unique shape making capabilities.

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