Detailed Product Description
System Tube Bending Machine, Membrane Panel Production Line
mainly used in the superheater, reheater, economizer serpentuator processing of large-capacity power plant boiler. This uses means of opening the upper die and lifting lower die. Angle control, pulse encoder; imported proportional valve controls the bending speed, boosting pressure; parameters can be controlled through the touch screen.
parameters:
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Tube diameter
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Ø32~ Ø76mm
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Tube thickness
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3~12mm
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Tube material
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Carbon steel, low alloy steel, head resisting steel and stainless steel
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Max .bending capacity
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Ø76×12
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Max. tensile strength
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700N/mm²
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Max. bending radius
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250mm
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Min. bending radius
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1D(thickness≥10% diameter)
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Max. bending angle
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190°
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Bending angle precision
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±0.1°
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Bending speed
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0~3rmp
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Min. straight section between two adjacent elbows
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≥120mm
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Minimum length of tube ending
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≥1500mm
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Ending techniques of tube length
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≥1700mm
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The distance between heading seized tube and the center of the bending model
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1500mm
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Maximum expansion of length of serpentuator tube row
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144m
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Maximum running torque of bending model
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8tm
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Maximum stroke of heading machine
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28t
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Maximum boosting spring force
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20t
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Maximum boosting stroke
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880mm
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Maximum loading pressure of hydraulic system
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21MPa
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technical requirements:
l Feeding tube means (choice)
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means
parameters
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roller
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Cartype
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Turnaround feeding precision
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±0.2 mm/10m
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Turnaround feeding speed
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0～35 m/min
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0～35 m/min
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Max. feeding length once
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Infinite
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10m
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Feeding force
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Φ76×10
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At speed of 35 m/min carry the tube of length 60 M weight 1000 kg
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l Tube is separable from the lower die and the upper die during transporting tube.
l Bending moment:Meeting the tube of length 60m, weight 1000kg bending requirement.
l Bending force:Meeting minimum bending radius requirement
l Blank holder device need be installed when processing thin-wall serpentuator.
l Blank holder device should be reasonable in structure and equipped with automatic lubrication device.
l The position of boosting clamp should be adjustable; the chuck position had better close the starting of bending.
l Bending tube program should store 15 sets
l The main components adopt imported brands (proportional valve, servos, PLC, input interface), which are available at home.
l Equipped with Oil temperature control system, which could regulate the oil temperature to ensure that keep 25℃～50℃through electric heating system and water cooling system.
l Bending process could be automatic, but it could also stop if needed at any time; manual control is fit to single action.
Acceptance criteria:
l Ovality : ≤10%
Ovality =2×(Dmax-Dmin)/(Dmax+Dmin)×100%
l Thinning volume
(t-t0)/t≤1/(4×R/D+2)
Where: t=tube thickness
t0=min thickness of outside elbow
R=elbow radius
D=tube diameter
l Other parameters of elbow should meet the JB/T1611 and UG0156 requirements
l Oval elbow, the thinning should not be less than the following requirements:
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Relative bend radius
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Ellipticity
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Maximum thinning rate
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R=1.2D
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10
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12
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R=1.5D
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8
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10
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R=2D
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5
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5
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