Round Pipe Steel Bar Making Machine , High Frequency Straight Seam Tube

Round Pipe Steel Bar Making Machine , High Frequency Straight Seam Tube

1.Applictions:

GGH-16z type precision high-frequency straight seam welding mill line is specialized to produce small pore diameter high frequency straight seam welded pipe for refrigeration & heat exchanger industry and structural pipe and industrial pipe with Φ6.35-Φ20mm and wall thickness of δ0.4-1.2mm(the pipes with Φ12mm-Φ16mm and thickness δ1.2-1.9mm should be processed on GGH-45z) Through optimization design, best materials choice, and accurately fabrication and rolls, the whole line can be reached high precision and high speed. Within suitable range of pipe diameter and wall thickness, pipe production speed can be adjusted.

2. Technical specification

1) Designed parameters

Welding mode: induction welding

Type of pipe: round pipe

Welder: 100kW solid state H.F. welder

Nominal power: 100kW

Rated DC power: P_d=120kW

Rated DC voltage: U_dN=450V

Rated DC current: I_dN=270A

The whole efficiency: η≥85%

Output power: P_out>100kW

Designed frequency: f=400~450kHz

MOSFET inverter: 60kW×2

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

2) Power distribution requirements

Nominal power: 100kW

Rated DC power: P_d=120kW

Line-in power factor: COSφ≥0.9

Power distribution capacity: S≥130kVA

Power supply voltage: 3-phase 380V/50Hz

Line-in current: I=220A

Line-in cable: each phase adopts 95mm² copper cable, 3-phase 4-line

3) Circulation soft water cooling system (air-water cooling system, GPKL-Ⅱ-0.35)

Cooling capacity: 30100K cal/h

Outlet temperature: ≤40°C

Working flux: 12m³/h

Working pressure: 0.15Mpa

Rated power: pipe pump motor 4.0kW, spray pump motor 0.55kW, fan motor0.37kW

Rated power: 3-phase 380V/50Hz

Noise: ≤85dB

With water tank level indication and temperature display, low water level and over-temperature protection function

3.Main parts list for solid state H.F. welder