integrated solid state hf induction welder
integrated solid state hf induction welder take induction heating as heating method , water cooling system. All in one design could save much room and much 
more efficient compared with traditional hf welder . 

• The new generation HF welder adopts PWM chop-wave technology and DPLL inverter control technology .DC Chopper is used to cut the power supply voltage properly to

• achieve the voltage change of the teminal load. 

• Product Name: integrated solid state hf induction welder 

• Application : Used for ERW tube mill welding of round pipe , square tube and rectangulare pipes . 

• Advantages of solid state integrated HF tube welder  

•  1. High Efficiency    Compared to traditional tube/ pipe solid state induction welding equipment, save power up to 15%~25%

•  2. Less Area Covered  Saving 35% area than traditional solid state welder

•  3. Esay Installation  Comparing to 5-7 days for traditional welder installation, integrated HF welder  installation is only 1 day. 

•  4. Less Installation Cost  Take 100kw HF welder for example, the traditional installation cost is around USD700 (purchasing cable, nozzles,

•      cable bridge and brackets), moreover, welder room or elevated platform is necessary, all cost will be about USD700-USD1000 .

•  5. Welding Quality Benefitted from PWM precise control voltage and three level of filtering, the output voltage is stable, ripple coefficient is 50% lower than

•      traditional welder. The welding quality is obviously better than tradtional solid state welder. 

•  

•  Comparison for two generation solid state high frequency welder 

•  

Comparison parameter	Traditional HF welder	Integrated HF Solid State Welder
Controlled components	SCR	IGBT
Frequency	50Hz	5-14KHz
Control mode	Phase shift trigger	PWM modulation
Input filtering	Without	L
Output filtering	L,C	LC
Output DC	Half wave	High density DC square wave
Voltage regulation precision	<5%	<1%
Current regulation precision	<5%	<1%
Cooling mode	Water cooling	Water cooling
Efficiency AC-DC	<90%,reactive power loss is big	0.97
Power factor	It changes from 0 to 0.90.	≥97%
Control circuit	Complex, there are synchronous requirement, not easy integration	Simple, special control board, fully enclosed
Volume	Large volume, structure scattered, heavy weight	Small volume, compact structure, light Weight
The interference to power grid	large, difficult to eliminate	Small, easy to eliminate
Regulator speed	Slower (ms)	Very fast (μs)
Energy saving effect	Better	More better