High Frequency Welded Pipe Mill for Gas Water 50m/min

• Loading car

The coil car is used for make the steel coil from loading position to uncoiler. At the same time lift oil cylinder, so that the steel coil inner hole is accurately set on the mandrel of the uncoiler, the uncoiler tension, push back to the original position.

Load-bearing: 12.0T

Moving motor power: 2.2KW

• Uncoiler

The uncoiler is of the structure of single expansion and cantilever mandrels. It contains two main parts: main body and the fixed base. The main body is equipped with pneumatic system to satisfy the needs of expanding, contracting and braking of the mandrels.

• Straightener

This unit is main used to lead the new coil steel head feed into the flattener unit after uncoiler unit bring the coil into the working place.

Positive and negative two-way loading.

Processing pressure:7Mpa

Electric motor power:2.2KW

• Flattener unit

This unit is main used to flatten the head and trail of the strip steel and prepare for the next step cutting and shear welding so as to ensure the strip steel opposed flate and straight in the shear welding.

Flattener level and pressing capability:

The style of the adjust velocity:No grade of the adjust velocity

The structure style:Pressing & carry,Five roll flattener unit

Up & down style:Hydraulic system

Width of the flattener:357-688mm

Flattener thickness :3-9mm

Electric motor power:45KW

• Automatic shear and welder

Used to cut off the irregular part of the tape head and tail, and align the tape tail of the previous coil with the tape head of the next coil, and weld them together to continuously feed the looper.

Structural form: shear welding bed, pinch feeding device, double centering device, double shearing shearing system, shearing plate system, welding bottom plate driving system, etc.

• Horizontal accumulator 10M

This machine is between shear welder and host (forming sizing mill) ,use for after a roll of strip steel are used up, before the next roll strip since prepared from uncoiling, shearing and butt welding time to ensure that the host (forming sizing mill) continuous production and store enough strip steel.

This unit is main include in press & carry material device, accumulator assemble, carry off material unit, electric control unit

specification:

• Forming & Sizing

The forming & sizing unit is the vital equipment to the pipe mill line. This unit abide by the roll frame theory. It could continue process some specification steel tube by no-contact welding, that is carrying some strip steel to this unit and let it passing the frame roll to frame tube raw, and then take the electric fluid together on the tube welding surface so as to treat the tube temperature higher to suit welding by the pressing roll welding, and then after cooling, forming sizing and flattener to product what is your demand tube.

• Saw

Flying Saw

Flying saws are hot-cutting saws, which fuse pipes by high-speed heating. Using high accurate STD control system and machinery system, the quickly ability and accurate processing is this unit advantage.

cutting tube Dia:Φ114-219mm

precisely dimension :8-12m

accurate:±3mm

max cutting times:7 times /min

max working velocity :50m/min

cutting piece dimension:Φ1100×5×Φ110mm

travel machine max route:2.8m

electric motor power of the cutting :132KW

working electric motor power:45KW

​Milling Saw

Cold cutting saw is an emerging online cutting technology in the welded pipe industry. The main feature is that it adopts the principle of cold milling. After cutting, the pipe end is flat and free of burrs. There is no need for secondary cutting for applications with high processing requirements.

Maximum linear speed: 50 m/min.

Cutting length range: 8 ~ 12meters

Cutting length accuracy: ±1.5mm (Line speed fluctuation does not exceed 2%)

Main controller: Siemens Simotion D435-2

Cutting type: Double saw blade, milling cut

Tracking speed: Same as tube mill (10-50m/min)

Control type: AC servo

• Transit roller + Unloading Rack

The finished pipes run along the Transit roller and to be automatically moved onto the Bench. Then simple Packing Machine packs the pipes in hexagon shape.

Motor: 3kw x2 set

Length: 24m

• Hydraulic testing machine

Φ114～Φ219.1mm Double-station hydraulic testing machine

Technical parameter:

1. Diameter range of test steel pipe: Φ114～Φ219.1 mm

2. Length of test steel pipe: 6～12m

3. Test steel pipe material: plain carbon steel

4. The maximum test pressure of steel pipe: Max 10MPa (100bars)

5. Holding time (settable): 3～5 sec

6. Number of roots per test: 2 roots/time

7. Sealing form: outer radial seal

8. Pipe body requirements: Straightness: pipe body ≤ 2mm/m, pipe end ≤ 3mm (pipe end length 1 meter),

Full length ≤20mm; deburring of pipe ends;

10. Pressure test medium: emulsion/water (to ensure that the medium is clean and free of impurities)

11. Flushing method: low pressure centrifugal pump IS125-100-315

12. Flushing active roller table rotation: reducer XWD0.55-3-47×2

13. Low-pressure water filling method: low-pressure centrifugal pump IS150-125-315

14. Pressurization method: high pressure plunger pump 3D2-SZ-75/25

15. Main cylinder at fixed end: Bore φ280

16. The main cylinder of the mobile end: Bore φ280

17. Mobile seat motor: XWED0.75-53-289

18. Tension beam form: Double tension beam

19. Equipment installed capacity: ～130KW

20. Efficiency: 1 piece/minute

Work process:

Upper pipe → align → chain transport to the water pressure center → clamp → fixed and mobile end test head extends to seal both ends of the steel pipe → low-pressure water fills with water, exhausts → closes the water filling valve and exhaust valve → pressurizes → Protects pressure→Relieve pressure→Retract the fixed and mobile end test head→Clamp loose→Send the steel pipe out of the chain→empty water→discharge

• Automatic palletizing machine

• Roller

Material: Cr12

Hardness of roller: HRC58-62

Deepness of quench hardening: ≥ 10mm

Roughness of surface: Ra≤0.8um

• 800KW High Frequency Welder

Output power: Pout＞800kW

Designed frequency: f=100~200KHZ

① Designed parameters

lNominal power: 800kW

lRated DC power: Pd=800kW

lRated DC voltage: UdN=450V

lRated DC current: IdN=2000A

lThe whole efficiency: η≥85%

lPout >800kw

lMOSFET inverter: 100kW×8

lTank circuit output mode: no welding transformer output, secondary resonance