I. Main Parameters and Specifications
Conforming to the YB189-64 standard
- Material: Low carbon steel and low alloy constructional steel
- Mechanical properties: σb≤520Mpa,σs≤340MPa
- Strip Width:100-190mm
- Strip Thickness:1.5-4.0mm
- Inner Diameter of Coils:φ480～φ510mm
- Outer Diameter of Coils:φ1000～φ1600mm
- Coil Weight:≤4T
- Pipe Size:φ33.7-φ60.3mm
- Thickness of Pipes:1.5-4.0mm
- Fixed Cutting length:4～6m
- Pipe-cutting Precision:0～3mm
- Forming Speed:20～70m/min
- Power, Water & Air Supply
| 1 | Power | Power Volume of the Line | Approx.800KW |
| Power Source | 380V/50Hz/3phases |
| 2 | Circulation Cooling Water
| Flow | 30T/h～40 T/h |
| Pool Volume | 60m3 |
| 3 | Compressed Air
| Flow | 5m3/min |
| Pressure | 5～7kg/ cm2 |
Workshop: 8m wide, 100m long, at least 5m high from Ceiling Rails
to Ground.
II. Coil Loading →Cutting and Welding → Accumulator → Forming, HF
welding, Deburring, Cooling, Sizing, Straightening →STD
Cold-cutting saw →Transmitting → Packing → Storage
III. Each machine parameters
1,Uncoiler
The uncoiler is of the structure of double 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.
| OD of coil | Φ1000-1600mm |
| ID of coil | Φ480-510mm |
| Width of strip | 100-190mm |
| Thickness of strip | 1.5-4.0mm |
| Weight of strip | Max4T |
| Expansion Type | Manual increases |
| Break | Pneumatic driving |
2,Shear and welder this machine is used to cut the irregular ends of the strips and
then connect the strips by welding.
| Strip width | 100-190mm |
| Welding thickness | 1.5-4.0mm |
| Cutting Type | Manual Cutting |
| Welding speed | Max 700mm/min |
| Welding Mode | Manual |
| Working Cycle | Max.180 seconds |
1. Spiral accumulator unit
This unit is main include in press& carry material device,
accumulator assemble, carry off material unit, electric control
unit.
(1) press & carry material device: It is main include frame,
electric motor, brake unit, circling direction transfer power axle
of the reduce velocity, press & carry roll, pressure air system of
guide roll, inspected velocity unit; it can supply the strip steel
to accumulator and the mean times it will transfer the carry
velocity information to electric control system, when we demand
stop carry the material to this unit, it will stop roll to the
electric motor and press& carry material roll by the break, and
also could adjust the velocity to carry electric motor and the unit
carry material velocity.
(2) Accumulator frame assemble: include the electric motor, frame ,
inner circle roll, out circle roll and pressure roll. It can be
used to storage the strip steel material from press& carry unit and
it could be draw from the center send-off material roll.
(3) Send-off material device: include frame, guide direction rolls,
guide out roll of high or lower place. It can carry the strip steel
to shape system and send the carry out material velocity
information to electric control device.
(4)technical parameters:
working style: change circle
advantage:storage material more, no strike to strip steel suface.
steel coil thickness:4mm
width:100-190mm
storage dia:5.0m
carry material going velocity:Vmax=240m/min
Pinch form:pneumatic 6Mpa
electric motor power of the press & carry:18.5KW
the electric motor of the accumulator frame :37KW
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 obtained after the cooling, sizing and primary
straightening.
| Forming Pipe OD. | Round pipe 33.7-60.3mm
|
| Forming Pipe Wall Thickness | 1.5-4.0mm |
| Forming speed | 20-70m/min |
Number. of forming stands, horizontal
| 7 |
Number. of forming stands, vertical
| 9 |
No. of sizing stands, horizontal
| 5 |
Number. of sizing stands, vertical
| 5 |
| Turks Head | 2 sets with single head
|
| Shaft dia. and material of horizontal roll stand | Φ90mm, Material 40Cr |
Shaft dia. and Material of vertical roll stand
| Φ50, Material 40Cr |
Bur Scraping Cutter
| 2 Sets |
| Main motor | 110kw+132kw |
5. cold saw
The cold saw used to precisely cut all kinds of frame tube
automatically. Concerning to using high accurate STD control system
and machinery system, this unit has the good precisely dimension
advantage, and the machinery transfer best advantage, so the
quickly ability and accurate processing,without Burr is this unit
advantage. |
| Square Pipe size | Φ33.7-60.3mm |
| Material | Q235. |
| Speed | Max.70m/min |
| Cutting Length | 7m |
| Precision | ±3mm |
| Drive motor | 15kw servo motor (yaskawa Japan) |
| Feeding motor | 4.4kw servo motor (yaskawa Japan) |
| Cutting motor | 11KW variable frequency motor. |
6. 300kw solid H.F welder
Designed parameters
Nominal power: 300kW Rated DC power: Pd=360kW
Rated DC voltage: UdN=450V Rated DC current: IdN=800A
The whole efficiency: η≥85% Output power: Pout＞300kW
Designed frequency: f=300~350kHz MOSFET inverter: 120kW×3
Tank circuit output mode: no welding transformer output, secondary
resonance
7. Roll Table, Bench & Packing Machine
The finished pipes run along the Roll Table and to be automatically
moved onto the Bench. Then simple Packing Machine packs the pipes
in hexagon shape.
The simple packing machine contains container and pneumatically
driven alignment
8. Roller :
The material :Cr12
The material Cr12 has the advantage of resisting abraded, and the
clients can choose it by yourself.
The roller is priced by its weight ,we can calculate the total
price of the rollers according to the specification of the welded
pipe from the clients.
