Direct Forming Tube Mill Line 200×10

TMain parameter：

1.Model: LW200×200×10

 

2. Main parameter of the tube line:

2.1 Raw material requirements:

2.1.1. Raw material quality standard: Maily "GB", partly "JIS" "DIN" standard.

Tensile strength: max. 550 MPa;

Yield strength: 350 MPa

2.1.2. Milling speed: 10~35 m/min

2.1.3. Wall Thickness: 3~10 mm (Q345B ≤ 8mm, when size is 200*200 material strength ≤ Q235)

2.1.4. Feeding speed of entry section: 10 m/min

2.1.5. Feeding speed of forming section: 8 m/min

2.1.6. Welding speed: 10~35 m/min

2.1.7. Length of tube: 6..12 m

2.1.8. Width of coil: 300~800 mm

2.1.9. O.D. of coil: 1300~2000 mm

2.1.10. I.D. of coil: Ø610, Ø760 mm (with boots cover)

2.1.11. Weight of coil: ≤15T

2.1.12. The tube line production range:

 

Type	Specification (mm)	Thickness (mm)	Product Standard	Material
Square tube	80*80-200*200	3-10(Q345B ≤ 8mm)	DIN59411 GB6728-2002	Q235-Q345
Rectangular tube	80*100-100*220	3-10 (Q345B ≤ 8mm)

Total time of readjustment from the last tube of one size to the first tube of another size must be not more then one hour.

 

2.2Technical requirement in plant

Power: AC380V (±10%) 50 HZ

Control power: AC110V 50 HZ

Feed in direction: according to customer' requirement

Installed capacity: 2000 kw

 

3.Working Flow:

Coil storage → Coil loading → uncoiling → pinching&leveling → shearing and butt-welding → Feeding → accumulating → Guiding → Forming → HF welding → deburring → Weld seam polishing → water cooling → sizing and straightening → cut to length → run out table → automatic stacking and packing → bunding and emulsion drain → rotating → transportation → storage

 

4. Description and composition of the basic units of the line:

4.1. Storage table

Function: It storage the steel coil, reduce the using rate of the crane.

Structure: metal plate structure

Loading weight 15 tons

Quantity: 2 set

 

4.2. Сoil car

Function: loading steel coil and lift the coil to the uncoiler

Structure: consist of supporter, moving body, supporting roller, cylinder, rail

Lifting mode	Hydraulic Ø150
Coil weight	≤15 tons
Walking motor	1.5KW YEJ motor swing reducer driven

 

4.3. Uncoiler

Function: uncoiling and centering to deliver the coil, centering with hydraulic and rotating with AC motor, drive with pneumatic system.

Structure	Single cone Cantilever, expanding by slide block
Expanding	Hydraulic Ø125
Expanding range	-40~+20
Driving type	Hydraulic
Coil weight	≤15 tons
Motor	3kw
Supporting rack

 

4.4. Shovel head, pincing&feeding and leveling machine: Feed and Leveling the steel strip.

Structure: consists of vertical roller, pressing rubberized roller, peeler telescopic table, motor raster pinch roll with straightening

 

4.5. Shearing and butt welding device

Function: shearing&butt welding the steel strips. It is use to cut the irregular ends of the strips and then connect the strips by welding.

Structure: consist of hydraulic shearing device, pinching roller, pressing plate, aligning device, butt welding table.

 

Item	Specification
Strip width	300-800 mm
Pressing way of hydraulic shearing	Hydraulic
Welding thickness	2,5-10 mm
Hydraulic cutting type	Inclined shears
Welding type	CO2 protection welding
Pinching roller drive	AC motor 2.2 kw
Blade material	6CrW2Si

 

4.6. Horizontal spiral accumulator

Function: It store and feeding of to the steel strip to ensure the non stop tube production of the whole line during the process of the but welding.

 

Structure: outside feeding device with the top drive and spiral accumulation device, consisted of rollers and motors. DC motor driven to feed material and adopt fixed circle.

 

Feeding speed	20~80 m/min
Feeding motor	DC 55 kw
Motor of accumulating device	AC 13pcs х 7,5 kw
Accumulator O.D.	10 m
Min. and Max. length strips	1000-1800 m

 

4.7.Automatic tube mill including forming, welding, cooling, sizing and straightening sections.

Automatic tube mill technical parameter and feature:

forming machine adopt cold rolled forming direct rolled into square type, rollers sharing 100%

there are 3 forming stands in the 1^st profiling area, the first 2 stands are single stands with two rollers type, both sides deforming at the same time. The 3^rd stand is passive stand with side rollers, when tube specification is changed, the roller moves on the horizontal axis, no need to change the roller;

there are 5 forming stands in the 2^nd profiling area. The forming technology is the same as the 1^st profiling area, both sides deforming at the same time. when tube specification is changed, the roller moves on the horizontal axis, no need to change the roller.

The closed profiling area forming area and the squeeze rollers, do not need to change the rollers when tube specification changes.

Sizing and straightening stand no need to change rollers when tube size changes.

 

4.8. Double blades orbital cutting saw

Function: Saw is used to precisely cut all kinds of square and rectangular tubes automatically. It adopt the high accurate STD control system and machinery system. Orbital cutting saw has the advantages of high precision of the cut, it makes short time cutting. The edge of the tubes after cut have no burr.

 

Specification:

Cutting size tube	Square – 80x80 – 200x200mm Rectangular – 80x100 – 100x220mm
Fixed cutting length	4~12 m
Cutting tolerance	0~3 mm
Orbital cutting motor	servo motor 35,6kw
Saw blade feeding motor	servo motor 1,9 kw x 2 sets
Cutting speed	Max. 40 m/min
Tube clamping type and quantity	pneumatic blocks 4 sets, no need to change clamps for different cutting sizes of tubes
Saw blade OD	350 mm

 

4.9. Run out table

Function: transport the piece of tube after cutting to the automatic stacking and packing machine, pull out defect tubes, stops the tube after transportation.

Specification:

Run out table is the welded steel plate structure with driven rollers. Run out table adopts the defect tube pull out device, providing device in to packing machine, tube stopping device. Tube stopping device is the damper in the end of run our table that stops the tube and dampens arising vibrations using hydraulics. The total length of run out table is 25m. The capacity od driven motor in 5.5KW.

 

4.10. Automatic stacking and packing machine

Function: automatically collecting and stacking of tubes into packs, manually packing of tube packs.

Structure: machine consists of tube fetching device, chained conveying mechanism, aligning device and stacking device, emulsion drain device, conveyors.

 

Processing description:

Tubes are moving on the chain conveyor from run out table by moving device motor. The chain bed motor deliver the tubes to the alignment device where tubes are align with the table.

After the computer finish collecting the tubes in the layer ant layer is complete, pushing mechanism push the tubes in to the stacking device. Stacking device collects the necessary quantity of tubes in the layer. Finished layer is putted down to the lifting device by the stacker. Lifting device move down the layer to be able to receive another one from the stacker. After the stacking is complete the tube package moving down on the transport conveyer.

Transport conveyer move the tubes package out from the lifting device in to the bunding and water drain station.

Tubes are packed by operators manually, using hand pneumatic bunding machines. Emulsion drain device inclines the package after bundling to ensure the emulsion flow out from the tubes.

When the tube package is complete, packing machine begin to collect new package from the new layers of tubes.

 

Technical specification:

	Speed of stacking and packing	up to 40m/min for all sizes of tubes
	Tube moving device	AC motor 7,5 KW
	Chained conveyor drive	AC motor 7,5KW
	pushing mechanism drive	hydraulic cylinder Ø 110x63
	Stacking device drive	AC motor 11KW

 

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