high quality tube machine different sizes tube making machine Steel pipe makeing machine

1.machine Summary

Finished product will be of round, square or rectangular pipe.The mill is intended for manufacturing of round pipe of Φ38mm-Φ127mm with thickness of 1.5mm–5.0mm from cold-rolled and hot-rolled coil strip by means of un closed tubular blank with its subsequent welding into tube, edge heating by means of solid state high-frequency welder, longitudinal seam welding in rolls of tube welding machine, cooling, further sizing or shaping and on-stream cutting of endless tube in measured lengths. This machine can be made into different sizes of tube by changing the molds.

2.The technical flow of the production line

{SteelTape}→→ Single-arbor un-coiler →→Strip-head Cutter and welder→→

Spiral Accumulator→→Forming section(Flattening unit +Main driving unit +Forming unit +Guide unit +High frequency induction welding unit +squeeze roller)+ De-burr frame →→Cooling unit →→ Sizing unit and straightener →→Flying saw under computer-control →→ Run-out table→→straightening

3Basic conditions

a) Steel Pipe Specification

(1)Round Pipe diameter: Φ38 –Φ127mm

Pipe Thickness: 1.5 – 5.0mm

(2)Square Pipe: 30X30mm –100X100mm

Rectangle Pipe: 20X40mm –120X80mm

Pipe Thickness: 1.5 – 5.0mm

(3)Pipe Length: 6.0m – 12.0m

(4)Length Tolerance: 0-6mm

b) Steel Tape Specification

1.Material: Low Carbon steel (δb≤500Mpa, δs≤235Mpa)

2.Steel Tape: Inner diameter: Φ510-610mm

Outer diameter: Max.Φ1800mm

Strip steel width: 120mm-400mm

Strip steel thickness:1.5mm-5.0mm

The maximum weight: 6.0 tons

c) Electricity

1. Dynamic power: AC380V±10%, 3phases, 50Hz±1.0%
2. Control Power: AC220V±10%, one phase, 50 Hz ±1.0%
3. d) Electric installed capacity: appro. 900KW
4. e) Cooling water
5. Reservoir for High Frequency equipment: 30 m³, one set
6. Reservoir for circulating cooling water: 25 m³, one set
7. f) Compressed air
8. Pressure: 0.4Mpa
9. Flow: 3.0m3/h
10. g) Production capacity

Annual output: 70000 ton, according to the yearly working days, daily working hours and the products.

1. h) Line speed: 30-60m/min
2. Equipment makeup and main parameters of single unit:
3. Hydraulic Single-arbor uncoiler with peeler

1.1. Parameters:

- Coil width: max.400mm

- Coil OD: max. Φ1800mm

- Coil ID: max.Φ508mm

- Coil weight: max. 6.0 tons

1.3. Mandrel expansion by hydraulic

2. Five-roll Flattener

2.1 Brief:

There are pairs of nipping and sending roller. Flatten rolls are arranged for two top and three below. Nipping and sending is pressured by hydraulic cylinder, flatter roll motor is cogged by worm wheel and worm screw reduced speed, the worm screws in front and one in back can come true be in-phase by sleeve connecting, which can ensure top leveling roll and under leveling roll be parallel, thereby which reach in the intention of flatten.

2.2 Parameters:

- Quantity of withdrawal roll: 2

- Material of withdrawal roll: 40Cr

- Quantity of flattener roll: 5

- Flattener Speed: 10m/min

- Rigidity of Roller: HRC50-60

3. Shearing & butt welding machine

3.1 Hydraulic shearing parameters machine:

- Cutting by hydraulic system

- Width: ≤400mm

- Thickness: ≤ 5.0mm

3.2 Butt welding machine by manual

- welding machine

3.3 Horizontal spiral accumulator(O.D.: 5.0m)

3.1 Low bracket: 1 set

3.2 Revolver: 1 set

3.3 7 rollers Flattening unit: 1 set

3.4 2 rollers feeding: 1 set

3.5 Accumulator: 1 set

- Feeding speed: Max.200m/min

- Storing capacity: 500meter -700 meter

3.6 High bracket: 1 set

3.7 Hydraulic system 1 set

3.8 Electrical system 1 set

3.9 Motor: Feeding motor: 30KW

4.1 Forming mill gearbox, universal joint

4.1.1 Mill entry flattener by up-horizontal roll and below-horizontal roll, one positive five-roll flattener, one pair of feeding vertical roll.

4.1.2 Forming mill consists of:

- Driven stand: 7 sets (Horizontal)

- Driven stand shaft: Φ 110mm

- Material of shaft: 40Cr

- Side roll stand: 8 sets(Vertical)

- Side roll stand shaft: Φ70mm

- Material of shaft: 40Cr

- Gear box & universal joint: 7sets

- Material of gear box: cast steel

- Material of bevel gear: 20CrMnTi

- Main motor: 110kW 1 set

- Main redactor: ZLY280 1 set

- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.

4.2 Sizing mill gear box, universal joint

4.2.1 Sizing mill consist of:

- Driven stand: 5 sets (Horizontal)

- Driven stand shaft: Φ 110mm

- Material of shaft: 40Cr

- Side roll stand: 5 sets (Vertical)

- Side roll stand shaft: Φ 70mm

- Material of shaft: 40Cr

- Gear box & universal joint: 5 sets

- Material of gear box: cast steel

- Material of gear: 20CrMnTi

- Main motor: 160kW 1 set

- Main redactor: ZLY280 1 set

- 2 sets single head Turkshead, with 4 rollers*2sets

- One speed testing roller with air cylinder for CNC flying saw

- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.

5. Welding section

5.1 Welding section consist of:

- Seam guide unit: 1 set

- Squeeze stand: 4 rollers(Φ80mm)

- De-burr frame: 1 set (2 heads)

- Horizontal unit for seam ironing: 2 rollers

5.2 Cooling section

- Cooling trough: 1 set

- Cooling trough length: 4.0 m

5.3 Solid state High frequency welder(GGP300KW)

- Nominal power: 4300kW

- Rated DC power: Pd=360kW

- Rated DC voltage: UdN=450V

- Rated DC current: IdN=1070A

- The whole efficiency: η≥85%

- Output power: Pout＞300kW

- Designed frequency: f=200~300kHz

- MOSFET inverter: 120kW×3

- Tank circuit output mode: no welding transformer output, secondary resonance.

- With water-water cooler for welder

6. CNC flying friction saw

6.1 Flying cut-off, mechanical section consist of:

- Saw disk: OD800mm×ID110mm×6.0mm

- Saw waver: Pneumatic

- Pipe clamp: Pneumatic

- Saw carriage travel: Rack and pinion with gear lath

- Motor for travel: DC 30KW

- Motor for sawing: AC 45KW

- Length Tolerance: 0-6mm