High Frequency Induction Solid State Welder is a specialized machine that uses HF electromagnetic induction to heat and join metals without melting the base materials.
The H.F. welder commences with an induction coil connected to high frequency power supply encompasses the formed tube profile, to induce a high frequency current in the pipe profile. Leveraging the skin effect and proximity effect of high frequency current, the induced electricity is concentrated onto the bonding surface of the tube profile fringe. The resistance of metal itself heats up the profile fringe quickly up to welding temperature. The heated fringe is pressed together and welded by squeezing rolls.
Equipped with a complete automation control system, the H.F. Welder adopts a typical AC-DC-AC variable frequency structure. Rectifier adopts 3-phase bridge style thyristor phase-control rectifier circuit, DC side adopts inductor, capacitor to compose LC filter which meet with the working requirements of voltage type inverter. The voltage type inverter adopts modularization parallel structure to extend power supply power; each inverter module is single phase MOSFET bridge style circuit connected with series resonance tank circuit by H.F. matching transformer. On one hand, the matching transformer realizes power combination and impedance matching; on the other hand, it realizes electric isolation of load and power supply. To put effective and swift protection on over-current malfunction of voltage type inverter, the special and stable over-current protection circuit can guarantee safe and stable running of inverter.
| Model | Size (mm) | Speed (m/min) | Rated Output Power (Kw) | Rated DC Voltage (V) | Rated DC Current (A) | Effective Water Storage Capacity (m³) | Cooling Capacity (m³/h) |
| GP32 | ф10 – ф32 □10 – □25 | 20 – 150 | 200 | 500 | 400 | ≥7 | ≥21.6 |
| GP50 | ф12 – ф50 □10 – □40 | 20 – 130 | 300 | 500 | 600 | ≥9 | ≥25 |
| GP76 | ф32 – ф76 □25 – □70 | 20 – 120 | 400 | 500 | 800 | ≥15 | ≥43.3 |
| GP89 | ф32 – ф89 □30 – □75 | 30 – 110 | 400 | 500 | 800 | ≥15 | ≥43.3 |
| GP114 | ф40 – ф114 □32 – □90 | 30 – 90 | 500 | 500 | 1000 | ≥20 | ≥43.3 |
| GP140 | ф48 – ф140 □40 – □120 | 30 – 80 | 600 | 500 | 1200 | ≥25 | ≥43.3 |
| GP165 | ф76 – ф165 □60 – □130 | 20 – 60 | 600 | 500 | 1200 | ≥25 | ≥43.3 |
| GP219 | ф89 – ф219 □70 – □180 | 15 – 50 | 800 | 500 | 1600 | ≥25 | ≥70 |
| GP273 | ф114 – ф273 □89 – □200 | 15 – 35 | 1000 | 500 | 2000 | ≥25 | ≥80 |
| GP325 | ф165 – ф325 □130 – □260 | 10 – 30 | 1200 | 500 | 2400 | ≥30 | ≥100 |
| GP355 | ф165 – ф355 □130 – □280 | 10 – 30 | 1200 | 500 | 2400 | ≥30 | ≥100 |
| GP406 | ф219 – ф406 □180 – □300 | 10 – 30 | 1500 | 500 | 3000 | ≥40 | ≥100 |
| GP457 | ф219 – ф457 □180 – □360 | 10 – 30 | 1500 | 500 | 3000 | ≥40 | ≥100 |
| GP508 | ф273 – ф508 □200 – □400 | 10 – 25 | 1800 | 500 | 3600 | ≥50 | ≥100 |
| GP610 | ф273 – ф610 □200 – □480 | 10 – 25 | 2100 | 500 | 4200 | ≥60 | ≥130 |
| GP660 | ф325 – ф630 □250 – □550 | 10 – 25 | 2100 | 500 | 4200 | ≥60 | ≥130 |
| GP711 | ф325 – ф760 □250 – □600 | 10 – 25 | 2400 | 500 | 4800 | ≥60 | ≥150 |
