344 Bloor Street W, Suite 607, Toronto, ON Canada M5S 3A7 www.lprglobal.com | www.uskoreahotlink.com Tel.: +1-416-901-5591 E-Mail: [email protected] Contents Page Introduction to our hydrodynamic bearing • Overview of our Facility and Experience 3-4 • Global Client Reference • Core Industry Served and Product Capability Our Bearing by Industry • Journal, Thrust and Tilting Pad Bearings for Turbines and 5 Generators • Configuration of Bearing on a Steam Turbine 6 • Hydroelectric power plants – Water Turbine Bearings 7 • Oil & Gas – Pump and Compressor Bearings 8 Projects, and R&D Capability • GE OEM Bearing Supplied to Nuclear Power Plant Clients 9 • Gas Turbine Bearing Cases 10 • Hydrodynamic Metal Bearing Quality Control 11 • Design, Analysis, and Repair – Rebabbitting 12 • Customized Engineering Design and Production 13-14 • PEEK material • New White Metal Centrifugal Casting Method- • >250 MW Gas Turbine Manufacturing Project • Horizontal Test Rig – Journal and Thrust Bearing Test Bearing Manufacturing Process 15 Certifications 16
http://www.uskoreahotlink.com/products/manufacturing/compressor-turbine-blade-manufacturer/ Hydrodynamic Metal Bearings Overview
Hydrodynamic Bearing Manufacturer - Introduction and History South Korea being the 5th largest nuclear power producer (generated electricity), A DMB started out as one of the largest 1p bearing producer for S.Korean nuclear ' plants, often supplying the entire fluid film bearings required for new plants. g 1 We’ve been supplying hydrodynamic - metal bearings and machine components v u¥ Gas Turbine Tilting Pad to not only nuclear, hydroelectric, and r renewable power plants but for global - + turbine, compressor, pump, engine, generator manufacturers. Gas Turbine Tilting Pad Journal Bearing Assembly With two ISO 9001 and ISO14001 certified manufacturing plants and an R&D center based in Busan, Korea, our factory is one of the few suppliers that was able to meet the needs and expectations of all six core power plants in S.Korea (Kepco). Our core competencies is in designing, manufacturing, repairing and rebabbitting of hydrodynamic bearings.
With 4 manufacturing patents and 2 design patents, our bearing designing and manufacturing skills produce quality parts for applications that require high precision, strength, and finishing quality such as power plants, gas turbines, steam turbines and generators, heavy machineries, hydro turbines, pumps, and marine propellers.
Major Clients
Over the years, we have manufactured for and served global clients providing custom designed bearings to global turbine OEM spec bearings as replacements. 3SBlissrposco iHYumi3GSEnergy TOSHIBA TMEiC Leading Innovation » @ Westingliouse ALST SN %-oi Wp drive industry HYUnDHI HALLA HSTEEL CEMENT
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 3 Hydrodynamic Metal Bearings Overview
Hydrodynamic Bearing Industry Served and Product Capability
Power Generation (Turbine, Generators for Nuclear, Thermal, Hydroelectric Plants) • Turbine Bearing Assembly • Liner Bearing • Liner and Casting Assembly • Bearing Ring • Journal Bearing (Sleeve) • Thrust Bearing Pad • Guide Bearing Pad • Upper Guide Pad • Turbine Guide Bearing Shell • Hydraulic Sealing • Gas Turbine Bearings • Double Tilting Pad Bearing and Assembly • Elliptical Bearing Casing • Thrust Bearing Casing • Thrust Ring • Thrust Plate
Compressor, Pumps, Industrial Plants • Pump Sleeve Bearing • Booster Pump Bearing • Thrust Pad Bearing • Guide Pad Bearing • Fan Sleeve Bearing • Compressor Thrust Bearing • Bushing Bearing • Labyrinth Seal • Lube Oil Tank Bearing • Pedestal Bearing – Bearing Housing
Shipbuilding and Marine • Camshaft Bearing and Ring • Crosshead Bearing • Shell Bearing • Guide Shoes • Ship Engine Bearing • Stern Tube Bearing • Intermediate Shaft Bearing Assembly • Thrust Pad Bearing
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 4 Power Industry Bearings: Turbine Bearings Generator Bearings
Our fluid film bearings are supplied to the power generation industry. Our bearings are installed inside power turbines and generators to support rotational movement of shafts. Our scope includes: Babbitt journal bearings, tilting pad bearings and assembly, thrust bearings. All our bearings are designed, manufactured in house.
Our tilting pad bearing allows bearing pads to move about a pivot, following the movement of the shaft to attain its own equilibrium position, and eliminating potential of whirl instability. Our tilting pad bearings are custom manufactured to have different number of pads, preload, pivot offset, type of pivot and orientation of the pads (LBP-load between pivots and LOP-load on pivots). Tilting pad journal bearings are applied to high speed and high performance compressors, as well as steam turbines, gas turbines and pumps, boosting dynamic stability of the rotors. We can supply the full customized pad bearing assembly, as well as the parts inside such as the casing and the pads.
Journal bearing capability: diameter up to 1,500 mm ID and length up to 2000 mm Thrust bearing capability: 2565 mm OD Base Metal: ASTM A105 / B50A517B2 / SF440A / SC450 / S20C-N, etc White (Babbitt) Metal: ASTM B23 Gr2 / B21A14 / WJ2/Tegostar/ WL2, etc
Tilting Pad Bearing Assembly Generator Bearing for Steam Turbine Elliptical Bearing Journal Bearing Assembly for Steam Turbine
Self-Equalizing Tilting Lower Tilting 2 Pad Pad Thrust Bearing Bearing for Gas Non-Equalizing Tilting Turbine Thrust Plate Pad Thrust Bearing
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 5 Sample Configuration of Bearing Assembly on Steam Turbine
ELLIPTICAL BEARING ASSEMBLY
DOUBLE TILTING PAD BEARING ASSEMBLY
THRUST BEARING ASSEMBLY http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ Hydroelectric power plants – Water Turbine Bearings
We provide specialized bearing materials for the hydro power industry. We make Babbitt bearings and a super engineered plastic material PEEK bearing that we’ve developed through a 3 year R&D partnership with the Korea Hydro & Nuclear Power. This material provides increased stability of the hydro turbine and saves material cost.
THRUST BEARING PAD
GUIDE BEARING PAD
UPPER GUIDE PAD
TURBINE GUIDE BEARING SHELL
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 7 Bearings for Oil & Gas – Pumps and Compressors
Booster Pump Bearing Pump Sleeve Bearing (Offset Half Bearing) (Pressure Dam Bearing)
Labyrinth Seal Bushing Bearing
Lube Oil Tank Bearing Compressor Bearing (Lobe Bearing) Guide Pad Bearing
LPB Tilting 5 Pad Bearing Fan Sleeve Bearing Pedestal Bearing
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 8 GE OEM Bearing Supplied to Nuclear Power Plant Clients
The process of manufacturing a bearing that fits GE specification starts with material selection and inspection. After tinning, we processed centrifugal casting with our centrifugal casting machine. Then we process ultra scan WM inspection before we move on to rough machining and final machining. For a bearing shell liner, we move straight into dimensional inspection and a non destructive testing before shipping out, but for a generator bearing assembly, we assemble the parts after rough machining, and go through final machining after.
Bearing Shell Liner
Generator Bearing Assembly
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 9 Gas Turbine Bearing Cases
The process of manufacturing a gas turbine bearings depends on the type of bearing required. For instance, our 4 pads that go inside a tilting pad bearing was manufactured by gravity casting, then a ultra scan WM inspection. After that, we processed through final machining, and dimensional check. Then we need to check for assembly clearance, and machined clearance. We finish off with PT check. But when we make lower 2 pads for the tilting pad bearing, we start with tinning, then gravity casting. We inspect the specimen via Chalmers Test, then contact check. We then move on to machining- final machining and relief machining. Lastly we proceed to PT check and dimensional check before we ship out. Tilting Pad Bearing (4 Pads)
Tilting Pad Bearing (Lower 2 Pads)
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 10 ' i i i IMI 1 H i I I 1 1 I i I I I i I i I I M I I I t i l I i ! - i | I 3 • m s
Hydrodynamic Metal Bearing Quality Controlli . r ! i I . / iiiiii a ; ! r i ! ! ^ 5
We have strict quality control processes from the designing stage, to analysis andf manufacturing, with - / jiiiiii test reports at the end to produce bearings and pedestals that meet the quality. . Bearing Designing Capability a i * § ID * 8 ) ) ) n n * « 8 a p - ( Ntn ) ( N < kW 3 ( rwaa 8
CYLINDRICAL JOURNAL BEARING LOM Stiff TNdVMM OFFSET HALF BEARING PRESSURE DAM BEARING Damping mr « net Film Po Direct On . 6 8 Mbv Avg Avg » i i - § i 2 * I I I « i J 3 il * ’ i i 1
ELIPTICAL JOURNAL BEARING TILTING PAD BEARING Bearing Analysis J r w : : * %
Bearing Pedestal Analysis M Pedestal bearing supporting the rotor in an . independent pedestal housing separated from the V % main casing. Designed through FE structural analysis.
Force Condition: 2000 kg Bonded (Vertical, Z) B.C Bearing Condition Assembly at Mounting Interface Locations
Fixed B.C Condition at bottom face
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 11 Bearing Repair – Rebabbitting
Bearing Repairs: RCP Retrofit and Rebabbitting As a rare quality class I certificate holder for nuclear power plant services and vast experiences providing services on-site for reactor coolant pump repair and turbomachinery repairs, our facility provides rapid bearing restoration to minimize operation costs for power plants. Our bearing repair process involves the removal of damaged babbiting metal, and Rebabbitting a new babbitting metals (or white metals) in as little as 4 days. Journal Bearing repairs involve bearing failure analysis, and bearing retrofit design.
Send in your original housing or casings for rebabbitting, and save 50% cost compared to producing a new bearing assembly.
Journal Bearing Repair case
RCP Bearing Retrofitting case
M 120°C
TIUJUXC lucise UCI toct
Trailing Edge Leading Edge /
a) 73 m/s,T75/75 = 114°C, T..= I64°C
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 12 Customized Engineering Design and Production
Power Plant Super Engineering Plastic Bearing for Aberration Generators
For the possibility of using K-PEEK instead of white metal for thrust bearing, and to lower friction and increase efficiency on the guide bearings, and to extend the life of turbine bearings
Undamped Mode of SJG1 Hydro TG Rotor 5000 Mode 3, Forward whirl 3D Undamped Mode Shape of SJG1Hydro TG Rotor Rotating speed (rpm) = 514 4000 Mode 3, Forward whirl Whirl natural freq (rpm) = 2370.21 . Rotating speed (rpm) = 514 LogDec = 2.68515e 010 3000 - - Whirl natural freq. (rpm) = 2370.21
200P OCOQOO cm
1000 5 17 O f 0
-1000 TSrg.# 1 Irg.# 2 Br 5 3 -2000 ^ -3000 Only Kxx = Kyy= 5e8 N/m considered -4000 Only Kxx = Kyy= 5e8 N/m considered -5000 0 2000 4000 6000 8000 10000 Axial Location on Rotor (mm)
New White Metal Centrifugal Casting Method- In Partnership with TEGOSTAR
90 N/mm' ECKA* TEGO$TAR *"
50 N/mm' 47 N/mm' WM8r\ TEGOTENAX 27 N/mm1 ASTM 623-2
20 C 100 c 235 C Variance of compressive yield strength Variance of material creep test
Pulverizing Mill Reduction Gear Thrust >250 MW Gas Turbine Manufacturing Bearing -In Partnership with KOSPO Project- Bearing Supplied
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 13 Customized Engineering Design and Production
Horizontal Test Rig – Journal and Thrust Bearing Test
Journal Bearing and Thrust Bearing with a shaft Horizontal Bearing Test Rig Schema diameter of Ø 100mm ~ 200mm | Speed: 3,600rpm
Static Pressure Radial Load: 5 Ton | Thrust Load: 2 Ton Shaft (Journal) Diameter Thrust Bearing (Maximum Load 2 Ton)
Motor (20KW)
Radial Bearing Static Pressure (Tilting or Journal Bearing) (Maximum Load 5 Ton)
Vertical Test Rig – Turbine Shaft
Vertical Bearing Test Rig Schema Turbine Shaft of diameter Ø 95mm and speed of 800 rpm: 800rpm Static Pressure (Maximum Load 2 Ton) Thrust Load: 2 Ton
Upper Guide Bearing
Tilting Thrust Bearing Shaft (Journal) Diameter (095)
Radial Bearing Lower Guide Bearing
Motor (5KW)
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 14 Metal Bearing Manufacturing Process
Material Supply- Forging, Rough Machining for size Back Metal NDT-UT/MT Heat Treatment Casting or Copper, etc secure and Removing mill Material quality check and Hydrogen removal and scale confirm inspection by specialist Stress relief
Machining Before Babbitting Tinning – 99.9% of Tin (Sn) Centrifugal Casting – rpm Rough Machining After and determination of Babbitt Temp. and holding hour and jig temperature Babbitting Inner side of Babbitt thickness monitored and maintained. monitored metal surface machining
White Metal /Babbitt Metal Accessory Machining- Includes Final Machining White/Babbitt Metal NDT-PT NDT / UT - Follows the half joint machining, hold and PT Testing of the Babbitt acceptance criteria of tap machining and oil dam material surface inside customer machining process
Inspection -Dimensional Polishing and Assembly- Packaging and Shipping inspection, visual inspection Removal of dirt, and polishing burr
http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/ 15 / Certifications
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