D5080-D2020mm SSAW pipe mill main machines
This unit is used to produce D5080-D2020mm spiral welded pipes for natural gas pipeline, heat pipe network, low-pressure fluid pipeline, water pipeline, steel pipe, steel pipe for structural parts, and steel pipe for other purposes.
2.1Raw material specifications | ||
NO. | items | details |
1 | Material | Hot rolled steel Q345B Q335,X80 |
2 | Thickness | 5-25.4mm |
3 | Width | 1050--2000mm |
4 | Coil Inside diameter | Φ820-Φ760mm |
5 | Coil outside diameter | Φ1600—Φ2200mm |
6 | Coil weight | ≤35 t |
7 | flatness | ≤10/10000mm |
2.2 Steel pipe specifications | ||
NO. | items | details |
1 | OD. | D508—D2020mm |
2 | Pipe wall thickness | 5—25.4mm |
3 | Pipe weight | Max22T |
4 | Pipe length | 11—12.5m |
5 | Forming angle | 40?--85? |
6 | Spiral length | Max2100mm |
2.3 Spiral machinery unit specifications | ||
NO. | Items | Details |
1 | Unit style | Front swing center positioning |
2 | Production style | Continuous |
3 | Forming angle | 45?--80? |
4 | Output of pipe | Plasma, motor separation and hydraulic kicker |
5 | Welding type | Inside and outside double sub-merged arc welding |
6 | Feeding speed | 0.5--3m/min |
7 | Welding speed | 0.5—2.5m/min |
8 | Max. spiral distance | 2400mm |
9 | Forming style | Three roller forming, outside diameter control, double seats with all centered style. |
Get coil ready→decoiling→ end straightening→cut to leveling and cutting→motorized vertical rollers→edge miller→motorized vertical rollers feeder→edge miller→plate side cleaning→motorized double head forming vertical rollers to center strip→feeder inlet→guide plate→plate side clearing unit→two ends forming vertical rollers→forming machine→inside welding→outside welding→pipe cutting with required length→quick separation→hydraulic unit outlet
Coil trolley:Structure: It consists of a frame, a rotating roller and a hydraulic moving device. The rotating rollers are driven by the motor through gears. The hydraulic cylinder pushes the roll preparation car forward and backward.
Decoiler:
Double taper head unwinder consists of left and right taper head frame, lifting device, left and right moving device and braking device, lifting device is realized by lifting cylinder, moving cylinder controls opening and closing and left and right moving of taper head frame.
4.3 Spade arm: The arm consists of swinging mechanism, telescopic mechanism, shovel head, etc. The swinging and telescopic movements of the shovel knife are driven by the oil cylinder.
Structure:The leveler is used to feed the strip opened from the uncoiler forward and level the steel plate. The leveling rollers are driven by the motor to realize the active leveling through the gear box and connected by the universal shaft, and the leveling rollers are arranged in the upper four and lower three. In order to increase the leveling capacity, the leveling rollers are equipped with support rollers above and below. Transmission motor part of the clutch is set, when the strip is sent to the delivery machine clutch is opened to realize passive leveling. The press down of the leveling machine adopts double cylinders with linear displacement sensors, and the press down part is shown on the display screen.
Cutting unit
4.5.1 Specifications: cutting cylinder ODΦ400/Φ230mmX280mm
4.5.2 Structure：Shear characteristics:
Adopt single shear form, not only simple and easy to operate, but also has the characteristics of occupying less distance.
4.5.2.1 The shear mode adopts cross-cutting shear, with adjustable side clearance of shear blade; adjustable clearance of shear blade to meet the shear requirements of 6~25.4mm plate thickness;
4.5.2.2 The overall longitudinal movement of the shearing and milling machine is driven by double hydraulic cylinders with a stroke of 100mm;
4.5.2.3 Shear device using a single shear shear steel strip with head and tail, the structure of the form of hydraulic linkage, with sufficient shear capacity;
4.5.2.4 In the shear process shall be used to press the steel belt pressure device;
4.5.2.5 The rollers in the shearing device can hold up the steel belt during the feeding process to prevent the steel belt from being scratched;
