Butt Welding Machine

Butt welding machines are an essential part in a wheel rim production line, using a hydraulic drive for clamping and welding of workpieces. The welding parameters are set on a touch screen, and this equipment features a high degree of automation, reliable operation system, and easy adjustment. The butt welder consists of the welding machine, electrical system, and hydraulic system.

Process drawings Flattening weld joint
Flash butt welding
Features There is a welding slag scraper on the welding jaw to automatically remove slags and facilitate usage. The welding current is multi-stage adjustable, applicable to welding rims in different specs. A high-quality copper electrode features an outstanding electrical conductivity, offering a high welding quality and a rejection rate within 0.5%. The hydraulic system is designed with a compact structure to save floor space. A filth blockage resistant hydraulic pump and servo valve is used, giving the hydraulic system an excellent resistance to dust pollution and low requirements for dustless production environments to save initial investment costs. Combined manual control and automatic control is easy to operate. The integrated control circuit features a convenient installation and maintenance. The overall frame design ensures a high strength and ensures the welding accuracy. An automatic welding slag conveyor is an optional accessory to remove slag at the bottom of the welder. Technical specs

No.	Items	Data
1	Model	UNB2-630	UNB2-800	UNB2-1000	UNB2-1600
2	Main circuit rated input voltage	AC 380V/1Phase	AC 380V/1Phase	AC 380V/1Phase	AC 380V/1Phase
3	Control circuit rated input voltage	AC 380V/3Phase/50Hz	AC 380V/3Phase/50Hz	AC 380V/3Phase/50Hz	AC 380V/3Phase/50Hz
4	Secondary voltage	6.55V to 11.8V	8.8V to 14.6V	8.8V to 14.6V	8.8Vto19.6V
5	Voltage of solenoid valve	DC 24V	DC 24V	DC 24V	DC 24V
		YV11, YV12 @AC 220V	YV11, YV12 @AC 220V	YV11, YV12 @AC 220V	YV11, YV12 @AC 220V
6	Total power input	630kVA	825kVA	1050kVA	1610kVA
7	Rated power at 50% transformer utilization factor	600kVA	800kVA	1000kVA	1600kVA
8	Max. upsetting force	280kN	320kN	320kN	400kN
9	Max. clamping force	650kN	650kN	650kN	650kN
10	Max. welding cross section area	3200mm 2	3500mm 2	4000mm 2	6000mm 2
11	Max. width of rim band	350mm	410mm	500mm	800mm
12	Max. thickness of rim band	4.5mm	8mm	10mm	13mm
13	Min. diameter of rim welded	250mm	400mm	400mm	500mm
14	Cooling water flow rate	4500liters/hour	4500L /H	5000L /H	6000L /H
15	Pressure of cooling water	0.2~0.4MPa	0.2~0.4MPa	0.2~0.4MPa	0.2~0.4MPa
16	Temperature of cooling water	No more than 20℃	No more than 20℃	No more than 20℃	No more than 20℃
17	Rejection rate	No more than 0.5%	No more than 0.5%	No more than 0.5%	No more than 0.5%