Our Work

3E

GE 8309 S Frame

Issue

• Welds Broken Where The Bars Meet The Endrings

Solution

• Removal Of Aluminum Cage Bars
• Replacement Of All Cage Bars With Copper Alloy
• Endrings Brazed To Cage Bars
• Machined
• Dynamically Balanced

Jenkins

844 HP 877 RPM NEW LAMINATION ROTOR REPAIR

Issue

• Melted copper bars lifted through top of slots, destroying rotor lamination’s

Solution

• All new lamination’s and spacers
• All new fabricated copper alloy bars inserted with tight interference
• Thicker redesigned endrings brazed to cage bars
• Machined to spec

Crimson

350 hp 1080 rpm

Issue

• Destroyed Iron
• Melt Cage Bars And End-rings

Solution

• Removal Of Cage Bars
• Separation Of All Lamination
• Re-insulation And Restack
• Replacement Of All Cage Bars
• Double Endrings Brazed To Cage Bars
• Machined
• Dynamically Balanced
• Shipped To Customer 9 Days After Arrival

Demaria

3000 hp 3600 rpm

Issue

• Majority Of Bars Broken
• Iron Shorted And Melted

Solution

• Removal Of Cage Bars
• Separation Of All Lamination
• 1/2 New Laser Cut Lamination Combined With 1/2 Original Lamination And Restacked
• Replacement Of All Cage Bars
• Endrings Brazed To Cage Bars
• Stainless Steel Retainer Rings Shrink Fit To Endrings
• Machined
• Dynamically Balanced

Continential

1600 HP/1800 RPM

Issue

• Lose original bars
• Fused laminations
• Cracked welds on endrings

Solution

• 12 Day Turn Around
• 3/4 Of Lamination Core Restacked and Refurbished
• All New Bar Material Milled And Brazed
• Machined
• Dynamically Balanced
• Shipped Back To Customer

IPS

600 hp 1200 rpm

Issue

• Melted Cast Aluminum Alloy Cage And End rings
• Partial Destroyed Lamination’s

Solution

• Removal Of All Aluminum Alloy Cage And Endrings
• Unstacking Then Restacking Of Original Lamination’s With New Insulation
• All New Copper Alloy Fabricated Cage Bars
• New Copper Endrings With Matched Cooling Fans
• Machined And Epoxied
• Dynamically Balanced

Rotor

3000 hp 900 rpm

Issue

• Cracked and melted weld joints at end ring
• Melted bars

Solution

• Poles detached and delivered
• Removal of all original bars
• Material tested
• Water jet cut end rings
• Fabricated bars sized and installed
• End ring fitted and brazed