II.Main composing equipments FOR ERW Pipe Making Machine:
The uncoiler of the structure is double expansion and cantilever mandrels. It contains two main parts: main body and the fixed base. The main body is manual expansion cones to satisfy the needs of expanding, one cone is working and the other is preparing, then turn 180°to work.
2. Cutting & welding machine
Cutting & welding machine is used to cut the irregular ends of the strips and then connect the strips by welding.
3. Storing machine: Horizontal spiral accumulator or vertical accumulator(cage type)
To guarantee continuous production, the horizontal spiral accumulator stores certain amount of strip and leaves the time for cutting&welding machine to connect the strips. During the producing, the coil length inside the accumulator is constant. The device is convenient in installation and easy for operation free from reduplicative fold and strip deformation. The strip can be fed smoothly with small resistance without tensile deformation. Then the foming&sizing mill consumes lower energy and low wear for the coils and bearings which is good for high quality welding seam and yield output.
4 Forming&sizing mill
Forming&sizing mill adopts roller type forming principle and high-frequency induction welding. The strip is fed into the forming machine by the feeding device in the mill and the forming roller continuously rotate and
press the strip into the required shape. Due to the skin and the kindred effect, the high-frequency current is concentrated on the weld joint that is heated rapidly and reaches the welding temperature. The tube
seam is welded under the pressure of squeeze rollers. The finished welded tube with required size can be obtained after the cooling, sizing and primary straightening.
5 Flying saw
Flying saw is used to precisely cut the pipe to length automatically under the condition that the pipe continuously
delivered from the mill at high speed.
6. 150KW solid-state High Frequency welder
The whole set of solid-state high frequency welder is composed of switch rectifying cabinet, inverter console, mechanical adjusting equipment,
and connection optical fiber.
7. Electric Control System
The electric control system adopts British Euro Digital DC Speed Regulating Unit.
8. Roll Table, Bench and Packing Machine
The finished pipes run along the Roll Table and to be automatically moved onto the Bench.
1. Runout table: length 20m, Motor: 5.5KW
2. Reversing device: one set
3. Bench: one set
4. Packing machine: one set
ERW Pipe Making Machine Model list
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