Patents Assigned to Waterbury Rolling Mills, Inc.
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Patent number: 6695934Abstract: A copper base alloy consisting essentially of tin in an amount from about 0.1 to about 1.5% by weight, phosphorous in an amount from about 0.01 to about 0.35% by weight, iron in an amount from about 0.01 to about 0.8% by weight, zinc in an amount from about 1.0 to about 15% by weight, and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix, is described. The alloy is characterized by an excellent combination of physical properties. The process of forming the copper base alloy described herein includes casting, homogenizing, rolling, process annealing and stress relief annealing.Type: GrantFiled: March 16, 2000Date of Patent: February 24, 2004Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 6679956Abstract: A process for making a copper base alloy comprises the steps of casting a copper base alloy containing tin, zinc, iron and phosphorous and forming phosphide particles uniformly distributed throughout the matrix. The forming step comprises homogenizing the alloy at least once for at least one hour at a temperature from 1000 to 1450° F., rolling to final gauge including at least one process anneal for at least one hour at 650 to 1200° F. followed by slow cooling, and stress relief annealing at final gauge for at lest one hour at 300 to 600° F.Type: GrantFiled: March 14, 2001Date of Patent: January 20, 2004Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 6436206Abstract: The present invention relates to copper base alloys containing tin, phosphorous, iron, and zinc and having phosphide particles uniformly distributed through the alloy matrix, which phosphide particles include fine and coarse phosphide particles. The alloy is produced using a process which comprises casting a copper base alloy consisting essentially of tin in an amount greater than about 1.5 wt. % up to 4.0 wt. %, phosphorous from 0.01 to 0.20 wt. %, iron from 0.01 to 0.80 wt. %, zinc in an amount greater than 1.0 wt. % up to 8.0 wt. %, and the balance essentially copper; homogenizing at least once for at least one hour at from 1000° F. to 1450° F.; rolling to final gauge including at least one process anneal for at least one hour at 650° F. to 1200° F. followed by slow cooling, preferably at a rate in the range of 20° F. to 200° F. per hour; and stress relief annealing at final gauge for at least one hour at 300° F. to 600° F.Type: GrantFiled: April 1, 1999Date of Patent: August 20, 2002Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Publication number: 20010009168Abstract: The present invention relates to copper-magnesium-phosphorous alloys. In a first embodiment, copper-magnesium-phosphorous alloys in accordance with the present invention consist essentially of magnesium in an amount from about 0.01 to about 0.25% by weight, phosphorous in an amount from about 0.01 to about 0.2% by weight, silver in an amount from about 0.001 to about 0.1% by weight, iron in an amount from about 0.01 to about 0.25% by weight, and the balance copper and inevitable impurities. Preferably, the magnesium to phosphorous ratio is greater than 1.0. In a second embodiment, copper-magnesium-phosphorous alloys in accordance with the present invention consist essentially of magnesium in an amount from about 0.01 to about 0.25% by weight, phosphorous in an amount from about 0.01 to about 0.2% by weight, optionally silver in an amount from about 0.001 to about 0.1% by weight, at least one element selected from the group consisting of nickel, cobalt, and mixtures thereof in an amount from about 0.Type: ApplicationFiled: March 7, 2001Publication date: July 26, 2001Applicant: WATERBURY ROLLING MILLS, INC.Inventor: Ashok K. Bhargava
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Patent number: 6241831Abstract: The present invention relates to copper-magnesium-phosphorous alloys. In a first embodiment, copper-magnesium-phosphorous alloys in accordance with the present invention consist essentially of magnesium in an amount from about 0.01 to about 0.25% by weight, phosphorous in an amount from about 0.01 to about 0.2% by weight, silver in an amount from about 0.001 to about 0.1% by weight, iron in an amount from about 0.01 to about 0.25% by weight, and the balance copper and inevitable impurities. Preferably, the magnesium to phosphorous ratio is greater than 1.0. In a second embodiment, copper-magnesium-phosphorous alloys in accordance with the present invention consist essentially of magnesium in an amount from about 0.01 to about 0.25% by weight, phosphorous in an amount from about 0.01 to about 0.2% by weight, optionally silver in an amount from about 0.001 to about 0.1% by weight, at least one element selected from the group consisting of nickel, cobalt, and mixtures thereof in an amount from about 0.Type: GrantFiled: June 7, 1999Date of Patent: June 5, 2001Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 6099663Abstract: A copper base alloy consisting essentially of tin in an amount from about 0.1 to about 1.5% by weight, phosphorous in an amount from about 0.01 to about 0.35% by weight, iron in an amount from about 0.01 to about 0.8% by weight, zinc in an amount from about 1.0 to about 15% by weight, and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix, is described. The alloy is characterized by an excellent combination of physical properties. The process of forming the copper base alloy described herein includes casting, homogenizing, rolling, process annealing and stress relief annealing.Type: GrantFiled: June 24, 1998Date of Patent: August 8, 2000Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 5985055Abstract: A copper base alloy consisting essentially of tin in an amount from about 1.0 to 11.0% by weight, phosphorous in an amount from about 0.01 to 0.35% by weight, iron in an amount from about 0.01 to about 0.8% by weight, and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix, is described. The alloy is characterized by an excellent combination of physical properties. The process of forming the copper base alloy described herein includes casting, homogenizing, rolling, process annealing and stress relief annealing.Type: GrantFiled: August 11, 1998Date of Patent: November 16, 1999Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 5916386Abstract: A copper base alloy consisting essentially of tin in an amount from about 1.0 to 11.0% by weight, phosphorous in an amount from about 0.01 to 0.35% by weight, iron in an amount from about 0.01 to about 0.8% by weight, and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix, is described. The alloy is characterized by an excellent combination of physical properties. The process of forming the copper base alloy described herein includes casting, homogenizing, rolling, process annealing and stress relief annealing.Type: GrantFiled: July 28, 1998Date of Patent: June 29, 1999Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 5893953Abstract: A copper base alloy consisting essentially of tin in an amount from about 0.1 to about 1.5% by weight phosphorous in an amount from about 0.01 to about 0.35% by weight, iron in an amount from about 0.01 to about 0.8% by weight, zinc in an amount from about 1.0 to about 15% by weight, and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix, is described. The alloy is characterized by an excellent combination of physical properties. The process of forming the copper base alloy described herein includes casting, homogenizing, rolling, process annealing and stress relief annealing.Type: GrantFiled: September 16, 1997Date of Patent: April 13, 1999Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 5865910Abstract: Copper base alloys consisting essentially of 1.0 to 4.0% tin, 0.01 to 0.20% phosphorous, 0.01 to 0.80% iron, 0.1 to 12.0% zinc and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix. The alloy is characterized by an excellent combination of physical properties. The process of the present invention includes homogenizing, rolling, process annealing and stress relief annealing.Type: GrantFiled: November 7, 1996Date of Patent: February 2, 1999Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava
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Patent number: 5820701Abstract: A copper base alloy consisting essentially of tin in an amount from about 1.0 to 11.0% by weight, phosphorous in an amount from about 0.01 to 0.35% by weight, iron in an amount from about 0.01 to about 0.8% by weight, and the balance essentially copper, including phosphide particles uniformly distributed throughout the matrix, is described. The alloy is characterized by an excellent combination of physical properties. The process of forming the copper base alloy described herein includes casting, homogenizing, rolling, process annealing and stress relief annealing.Type: GrantFiled: December 26, 1996Date of Patent: October 13, 1998Assignee: Waterbury Rolling Mills, Inc.Inventor: Ashok K. Bhargava