Butt Welding Machine

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Flash butt welder used in the steel wheel production line for welding steel wheel rims

The butt welding machine used in steel wheel production line is designed for joining and welding the ends of the coiled hoops together to form wheel rims. Both clamping and welding functions are operated hydraulically, with welding parameters easily adjustable via a touch screen.

Butt welding machines can be provided with AC or DC butt welding process. The DC welder offers faster welding speed and superior weld quality, ideal for high-precision needs, but requires stricter material and flatness specifications. The choice of machine type depends on specific production needs, allowing customization for optimal performance.

Process Flow Process Flow

Flattening weld joint
Flash butt welding

AC Flash Butt Welding Machine

Model	UNV-400	UNV-630	UNV-800	UNV-1000	UNV-1250	UNV-1500
Rated input voltage of main circuit	380V	380V	380V	380V	380V	380V
Rated input voltage of control circuit	380V/50HZ	380V/50HZ	380V/50HZ	380V/50HZ	380V/50HZ	380V/50HZ
Secondary voltage	6.3V-12.6V	6.3V-12.6V	7.9V-15.8V	7.9V-15.8V	9V-18V	9V-18V
Solenoid valve voltage	24V	24V	24V	24V	24V	24V
Total power input	400KVA	630KVA	800KVA	1000KVA	1250KVA	1500KVA
Max. upsetting force	280KN	280KN	320KN	320KN	400KN	400KN
Max. clamping force	540KN	540KN	600KN	600KN	750KN	750KN
Max. welding area	1500mm²	2100mm²	3200mm²	3600mm²	7200mm²	9600mm²
Max. width of wheel rim	300mm	350mm	400mm	450mm	800mm	800mm
Max. thickness of wheel rim	5mm	6mm	8mm	8mm	9mm	12mm
Min. diameter of welded rim	250mm	300mm	400mm	400mm	540mm	540mm
Cooling water flow rate	80L/min	100L/min	140L/min	160L/min	180L/min	200L/min
Cooling water pressure	0.2-0.4Mpa	0.2-0.4Mpa	0.2-0.4Mpa	0.2-0.4Mpa	0.2-0.4Mpa	0.2-0.4Mpa
Cooling water temperature	≤30℃	≤30℃	≤30℃	≤30℃	≤30℃	≤30℃
Cooling water type	Purified water	Purified water	Purified water	Purified water	Purified water	Purified water

DC Butt Welding Machine

Model	DC350*4
Rated input voltage of main circuit	380V
Rated input voltage of control circuit	380V/50HZ
Solenoid valve voltage	24V
Total power input	1400KVA
Max. upsetting force	320KN
Max. clamping force	600KN
Max. welding area	1500mm²
Max. width of wheel rim	300mm
Max. thickness of wheel rim	5mm
Min. diameter of wheel rim	460mm
Cooling water flow rate	200L/min
Cooling water pressure	0.2-0.4Mpa
Cooling water temperature	≤30℃
Cooling water type	Purified water

Features

Multi-level adjustable welding current settings support a variety of rim specifications.
The high-quality alloy copper electrodes ensure excellent conductivity and high durability.
The hydraulic system on the flash butt welding machine has a compact structure that minimizes the required footprint.
It supports both automatic and manual welding, making it user-friendly.
All electrical components of the butt welder have integrated connection that makes the installation and maintenance easier.
Its framework design enhances welding strength and precision.
The rim welding machine can be equipped with an automatic slag conveyer to clean the slag from the electrodes and the bottom of the butt welder.