norsk induksjonsrørbøying as. factors: heating speed bending temperature cooling speed mother pipe...
TRANSCRIPT
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Norsk Induksjonsrørbøying AS
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Induction Bending
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Factors:
Heating Speed Bending Temperature
Cooling Speed Mother Pipe Material Properties
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Bending Machine:
Air-ringInductorQuench ring
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PB450-18”Induction Bending Machine
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PB400-16”Induction Bending Machine
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Profiles:
All materials that can conduct electricity are bendable, almost regardless of the profile shape!
Induction bending gives you great freedom of choice:• Bending radius: Step-less from 60 mm to 22.000 mm• Bending angle: 0 to 300 degrees• Profile dimensions: max. 300 X 600 mm (width x
height).
Pipe dimensions from 16 mm to 457,2 mm (18”)
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Ω – Spool reduced with8 welds and better flow
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ExamplesOf cost reducing designs
Ex. 1. Traditional method, with welded standard pipes.6 welded joints
Ex. 2. Induction bends, with long straight ends.1 welded joint
Ex. 3. Induction spool.0 welding
Ex. 4. Induction bends, with long straight ends.2 welded joints
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Heating Speed:
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Bending Temperature/temperature tolerance
Material Grade Carbon material (870º – 930º)
Duplex / Super Duplex
(1050º – 1120º)
Mother pipe material certificates
Wall thickness
Induction coil
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Cooling Speed:
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Motherpipe Material Properties
Carbon steel / Stainless steel
Seamless / longitudinal welded
Weld cap (G48)
Segregation / Intermetallic phases in the middle of the plate thickness
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Post Bend Heat Treatment (PBHT)
Heating of steel
Capacity: 3,5 tons
Temperature 580°C to 1150°C
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Carbon steel - Tempering (SML 360 / 415) - Quenching and Tempering (SML 415 / 450) - Normalizing (SML 360)
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Duplex / Superduplex - Wall thickness - Pipe manufacturer - Seamless / Seamwelded - Bending radius
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PBHT – Increasing Cost - PBHT - PBHT Batch test - Blasting / Pickling - Single bends = more welds
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• NORSOK M-630, • DNV OS-F101, • ISO 15590-1, • TR 2000• TR 1969• TR 1120• And a lot of other
specifications
Specifications:
How do we ensure the quality of the bends?
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Mechanical Testing
1. Qualification Test2. Production Test3. Batch Test
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Norsk Induksjonsrørbøying AS - NIRASBø Industriområde 23802 Bø i [email protected]: (+47) 35 06 13 10Faks: (+47) 35 06 13 11
Contact Info:
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Induction Bending