High Frequency Welded Pipe Mill 1.5-4.0 Mm In Thickness Round 33.78～60.3mm
Product Specifications
| Attribute | Value |
| Coil Thickness | 1.5-4mm |
| Coil Width | 80-300mm |
| Inner diameter | 480-510mm |
| Outer diameter | 1000-1600mm |
| Speed | max 70m/min |
| Warranty | One year |
| Material | Low carbon HRC |
Main Parameters
- 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
| Power Volume of the Line | Approx. 800KW |
| Power Source | 380V/50Hz/3phases |
| Circulation Cooling Water Flow | 30T/h～40 T/h |
| Pool Volume | 60m³ |
| Compressed Air Flow | 5m³/min |
| Pressure | 5～7kg/cm² |
Production Process
Coil Loading → Cutting and Welding → Accumulator → Forming, HF welding, Deburring, Cooling, Sizing, Straightening → STD Cold-cutting saw → Transmitting → Packing → Storage
Machine Components and Specifications
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 | Max 4T |
| 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 |
3. Spiral Accumulator Unit
This unit mainly includes press & carry material device, accumulator assemble, carry off material unit, and electric control unit.
| Working style | Change circle |
| Advantage | Storage material more, no strike to strip steel surface |
| 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.
| 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 |
| Number 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.
| 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
| 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.
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