IP Library › Patent Application 13188750
Patent Application
App. No. 13/188,750

ELECTROMAGNETIC MACHINE AND SYSTEM INCLUDING SILICON STEEL SHEETS

Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US None
App. No.
13/188,750
Abstract

A silicon steel sheet formed from a silicon steel alloy composition includes, in parts by weight, iron, carbon present in an amount of from about 0.002 to about 0.06, silicon present in an amount of from about 1.5 to about 4.0, aluminum present in an amount of from about 0.1 to 1.0, titanium present in an amount of less than or equal to about 0.03, vanadium present in an amount of less than or equal to about 0.005, and cobalt present in an amount of from about 0.001 to about 5.0 based on 100 parts by weight of the composition. Neither niobium nor zirconium is present in the composition. A silicon steel sheet system including the silicon steel sheet and a coating disposed thereon, and an electromagnetic machine having a magnetic core including a plurality of sheets stacked adjacent one another are also disclosed.

Claims (103)

1 . A silicon steel sheet formed from a silicon steel alloy composition comprising:

iron;

carbon present in an amount of from about 0.002 parts by weight to about 0.06 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

silicon present in an amount of from about 1.5 parts by weight to about 4.0 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

aluminum present in an amount of from about 0.1 parts by weight to about 1.0 part by weight based on 100 parts by weight of the silicon steel alloy composition;

titanium present in an amount of less than or equal to about 0.03 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

vanadium present in an amount of less than or equal to about 0.005 parts by weight based on 100 parts by weight of the silicon steel alloy composition; and

cobalt present in an amount of from about 0.001 parts by weight to about 5.0 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

wherein neither niobium nor zirconium is present in the silicon steel alloy composition.

2 . The silicon steel sheet of claim 1 , wherein the silicon steel alloy composition includes cobalt present in an amount of from about 0.01 parts by weight to about 3.5 parts by weight based on 100 parts by weight of the electrical steel alloy composition.

3 . The silicon steel sheet of claim 1 , wherein the silicon steel alloy composition includes titanium present in an amount of less than or equal to about 0.02 parts by weight based on 100 parts by weight of the silicon steel alloy composition.

4 . The silicon steel sheet of claim 2 , wherein the silicon steel alloy composition includes vanadium present in an amount of from less than or equal to about 0.002 parts by weight based on 100 parts by weight of the silicon steel alloy composition.

5 . The silicon steel sheet of claim 1 , wherein the silicon steel alloy composition further includes manganese present in an amount of from about 0.030 parts by weight to about 0.600 parts by weight based on 100 parts by weight of the silicon steel alloy composition.

6 . The silicon steel sheet of claim 1 , wherein the silicon steel alloy composition further includes phosphorus present in an amount of from about 0.002 parts by weight to about 0.020 parts by weight based on 100 parts by weight of the silicon steel alloy composition.

7 . The silicon steel sheet of claim 1 , wherein the silicon steel sheet is further defined as non-oriented silicon steel sheet.

8 . The silicon steel sheet of claim 1 , wherein the silicon steel sheet is further defined as grain-ordered silicon steel sheet.

9 . The silicon steel sheet of claim 1 , having a thickness of from about 0.2 mm to about 0.65 mm.

10 . The silicon steel sheet of claim 1 , having a thickness of from about 0.315 mm to about 0.385 mm.

11 . The silicon steel sheet of claim 1 , wherein the silicon steel alloy composition further includes;

titanium present in an amount of less than or equal to about 0.02 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

vanadium present in an amount of less than or equal to about 0.002 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

aluminum present in an amount of from about 0.4 parts by weight to about 0.55 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

manganese present in an amount of from about 0.030 parts by weight to about 0.600 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

phosphorus present in an amount of from about 0.002 parts by weight to about 0.020 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

nickel present in an amount of from about 0.002 parts by weight to about 0.060 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

chromium present in an amount of from about 0.006 parts by weight to about 0.090 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

molybdenum present in an amount of from about 0.003 parts by weight to about 0.015 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

copper present in an amount of from about 0.003 parts by weight to about 0.09 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

tin present in an amount of from about 0.001 parts by weight to about 0.050 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

boron present in an amount of from about 0.0001 parts by weight to about 0.004 parts by weight based on 100 parts by weight of the silicon steel alloy composition; and

tungsten present in an amount of less than or equal to about 0.001 parts by weight based on 100 parts by weight of the silicon steel alloy composition.

12 . The silicon steel sheet of claim 1 , wherein the silicon steel alloy composition further includes;

carbon present in an amount of from about 0.004 parts by weight to about 0.008 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

silicon present in an amount of from about 2.0 parts by weight to about 3.5 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

aluminum present in an amount of from about 0.4 parts by weight to about 0.55 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

titanium present in an amount of less than or equal to about 0.02 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

vanadium present in an amount of less than or equal to about 0.002 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

manganese present in an amount of from about 0.030 parts by weight to about 0.600 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

phosphorus present in an amount of from about 0.002 parts by weight to about 0.020 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

nickel present in an amount of from about 0.002 parts by weight to about 0.060 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

chromium present in an amount of from about 0.006 parts by weight to about 0.090 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

molybdenum present in an amount of from about 0.003 parts by weight to about 0.015 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

copper present in an amount of from about 0.003 parts by weight to about 0.09 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

tin present in an amount of from about 0.001 parts by weight to about 0.050 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

boron present in an amount of from about 0.0001 parts by weight to about 0.004 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

tungsten present in an amount of less than or equal to about 0.001 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

sulfur present in an amount of from about 0.002 parts by weight to about 0.009 parts by weight based on 100 parts by weight of the silicon steel alloy composition;

oxygen present in an amount of from about 0.001 parts by weight to about 0.040 parts by weight based on 100 parts by weight of the silicon steel alloy composition; and

nitrogen present in an amount of from about 0.002 parts by weight to about 0.010 parts by weight based on 100 parts by weight of the silicon steel alloy composition.

13 . A silicon steel sheet system comprising:

a silicon steel sheet formed from a silicon steel alloy composition, wherein said silicon steel alloy composition includes;

iron;

carbon present in an amount of from about 0.002 parts by weight to about 0.06 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

silicon present in an amount of from about 1.5 parts by weight to about 4.0 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

aluminum present in an amount of from about 0.1 parts by weight to about 1.0 part by weight based on 100 parts by weight of said silicon steel alloy composition;

titanium present in an amount of less than or equal to about 0.03 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

vanadium present in an amount of less than or equal to about 0.005 parts by weight based on 100 parts by weight of said silicon steel alloy composition; and

cobalt present in an amount of from about 0.001 parts by weight to about 5.0 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

wherein neither niobium nor zirconium is present in said silicon steel alloy composition; and

a coating disposed on said silicon steel sheet.

14 . The silicon steel sheet system of claim 13 , wherein said coating has a thickness of from about 0.2 microns to about 0.5 microns.

15 . The silicon steel sheet system of claim 13 , wherein said silicon steel alloy composition further includes;

carbon present in an amount of from about 0.004 parts by weight to about 0.008 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

silicon present in an amount of from about 2.0 parts by weight to about 3.5 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

aluminum present in an amount of from about 0.4 parts by weight to about 0.55 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

titanium present in an amount of less than or equal to about 0.02 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

vanadium present in an amount of less than or equal to about 0.002 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

manganese present in an amount of from about 0.030 parts by weight to about 0.600 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

phosphorus present in an amount of from about 0.002 parts by weight to about 0.020 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

nickel present in an amount of from about 0.002 parts by weight to about 0.060 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

chromium present in an amount of from about 0.006 parts by weight to about 0.090 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

molybdenum present in an amount of from about 0.003 parts by weight to about 0.015 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

copper present in an amount of from about 0.003 parts by weight to about 0.09 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

tin present in an amount of from about 0.001 parts by weight to about 0.050 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

boron present in an amount of from about 0.0001 parts by weight to about 0.004 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

tungsten present in an amount of less than or equal to about 0.001 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

sulfur present in an amount of from about 0.002 parts by weight to about 0.009 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

oxygen present in an amount of from about 0.001 parts by weight to about 0.040 parts by weight based on 100 parts by weight of said silicon steel alloy composition; and

nitrogen present in an amount of from about 0.002 parts by weight to about 0.010 parts by weight based on 100 parts by weight of said silicon steel alloy composition.

16 . An electromagnetic machine comprising:

a magnetic component including a plurality of silicon steel sheets stacked adjacent one another, wherein each of said plurality of silicon steel sheets is formed from a silicon steel alloy composition including;

iron;

carbon present in an amount of from about 0.002 parts by weight to about 0.06 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

silicon present in an amount of from about 1.5 parts by weight to about 4.0 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

aluminum present in an amount of from about 0.1 parts by weight to about 1.0 part by weight based on 100 parts by weight of said silicon steel alloy composition;

titanium present in an amount of less than or equal to about 0.03 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

vanadium present in an amount of less than or equal to about 0.005 parts by weight based on 100 parts by weight of said silicon steel alloy composition; and

cobalt present in an amount of from about 0.001 parts by weight to about 5.0 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

wherein neither niobium nor zirconium is present in said silicon steel alloy composition.

17 . The electromagnetic machine of claim 16 , wherein said silicon steel alloy composition further includes;

titanium present in an amount of less than or equal to about 0.02 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

vanadium present in an amount of less than or equal to about 0.002 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

aluminum present in an amount of from about 0.4 parts by weight to about 0.55 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

manganese present in an amount of from about 0.030 parts by weight to about 0.600 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

phosphorus present in an amount of from about 0.002 parts by weight to about 0.020 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

nickel present in an amount of from about 0.002 parts by weight to about 0.060 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

chromium present in an amount of from about 0.006 parts by weight to about 0.090 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

molybdenum present in an amount of from about 0.003 parts by weight to about 0.015 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

copper present in an amount of from about 0.003 parts by weight to about 0.09 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

tin present in an amount of from about 0.001 parts by weight to about 0.050 parts by weight based on 100 parts by weight of said silicon steel alloy composition;

boron present in an amount of from about 0.0001 parts by weight to about 0.004 parts by weight based on 100 parts by weight of said silicon steel alloy composition; and

tungsten present in an amount of less than or equal to about 0.001 parts by weight based on 100 parts by weight of said silicon steel alloy composition.

18 . The electromagnetic machine of claim 16 , wherein said magnetic component is a rotor.

Assignments (2)
SECURITY AGREEMENT Recorded Jun 28, 2012
From: GM GLOBAL TECHNOLOGY OPERATIONS LLC
To: WILMINGTON TRUST COMPANY
Reel/Frame 028466/0870 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2011
From: WAKADE, SHEKHAR G.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 026634/0837 →