length of a light gauge coil sheet is long, for example, a 0.2mm thick coil length is 10times length of 2mm coil, steel sheet market is valued as per weight, higher weight production of cut sheets needs faster line speed, while normal stop cutting can not reach very high frequency cutting and line speed is limited.
Thin sheets length range usually short and maximum no more than 3m or 4m, thin sheet can be easily cut off in one fast stroke by fly rotary cutting: the sheet runs at stable speed, rotary shear rotates and cut off a sheet in a clycle under the closed loop length feedback, max cutting frequency can be up to 150times/min. linear producing speed up to 80m/min, this character is very suitable for thin and short sheets cutting.
Fly cutting shear is high precision, driven by servo motor, precisely calculates the coming length of sheet and match shear rotating speed to cut in stroke, the cutting speed is automatically adjusted as per sheet length.
The fly cutting line is continuous from uncoiling, leveling, pair of dual rollers feeding, filming, rotary shear, convey belts, dual stackers, the control system is high configuration including big screens, sensors, PLC, contactors, relays, etc.

Comparision of 2mm coil and 0.2mm coil:

Parameters:

Input Raw Material and Finished Product
Raw Materials	Cold Galvanized, Cold Rolled , Color Coated Coils
Mechanical Property	Tensile Strength σb≤460Mpa, σ0.2≤280Mpa
Thickness	0.3-3.0mm,
Width	500mm-1600mm(Max)
O.D.	≤Φ1800mm
I.D.	Φ508mm (enlarge to Φ610mm with gaskets)
Max Weight	15tons, 20 tons
Sheet length	200 - 4000mm
Length Tolerance	L ₀ = 1M±0.3 mm (uniform velocity)
Length Tolerance	L ₀ = 1 M±0.4 mm (acceleration / deceleration)
Diagonal Length Tolerance	L ₁ = 1M±0.5mm
Stacking Height	650mm Max (wooden support approx 150mm high)
Max Stacking Weight	5 tons

	Flying CTL Parameters
1	Linear Speed	0-80 m/min
2	Threading Speed	0-15 m/min
3	Power Supply	380V / 50Hz / 3PH
4	Installed Power	About 280KW
5	Cross Cutting Way	Two Knives Fly Counter Cutting
5	Cross Cutting Way	Cutting Mechanism track cutting
6	Control Way	AC, CNC and PLC Control
7	Drive Motor	a. Decoiling Motor: AC 37KW b. Leveling Motor: AC 90KW
7	Drive Motor	c. Rotary Shears Servo Motor: AC 110KW

Composition:

	Item	Qty
1	Loading Station	1
2	Loading Car	1
3	Decoiler	1
4	Precise Leveling Machine (19 Rollers)	1
5	Servo Feeding Device (Include Laminating Device)	1
6	Rotary High Speed fly Cutter	1
7	Three Stages Belt Conveyor	1
8	1^st Automatic sheets Gathering Machine	1
9	2^nd Automatic Gathering Machine	1
10	Hydraulic System	1
11	Pneumatic System	1
12	Lubricating System	1
13	Electrical System	1

Light Gauge Rotary Shear Fly Cut To Length Line Machine 3 X 1600

Metal Slitting Line