Invention Grant
- Patent Title: Lubricants for insulated soft magnetic iron-based powder compositions
- Patent Title (中): 绝缘软磁铁粉组合物润滑剂
-
Application No.: US11628638Application Date: 2005-06-21
-
Publication No.: US07718082B2Publication Date: 2010-05-18
- Inventor: Hilmar Vidarsson , Paul Skoglund , Björn Sk{dot over (a)}rman
- Applicant: Hilmar Vidarsson , Paul Skoglund , Björn Sk{dot over (a)}rman
- Applicant Address: SE Höganäs
- Assignee: Höganäs AB
- Current Assignee: Höganäs AB
- Current Assignee Address: SE Höganäs
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: SE0401644 20040623
- International Application: PCT/SE2005/000977 WO 20050621
- International Announcement: WO2006/001763 WO 20060105
- Main IPC: B22F1/00
- IPC: B22F1/00 ; C22C33/02 ; H01F1/24

Abstract:
The invention concerns a powder metallurgical composition containing, preferably a coarse, soft magnetic iron or iron-based powder, wherein the particles are surrounded by an insulating inorganic coating and as lubricant at least one non-drying oil or liquid having a crystalline melting point below 25° C., a viscosity (η) at 40° C. above 15 mPas and wherein said viscosity is temperature dependent according to the following formula: 10 log η=k/T+C wherein the slope k is above 800 T is in Kelvin and C is a constant in an amount between 0.05 and 0.4% by weight of the composition.
Public/Granted literature
- US20080019859A1 Lubricants For Insulated Soft Magnetic Iron-Based Powder Compositions Public/Granted day:2008-01-24
Information query