Medium-frequency Spot Welding Machine

The welding transformer is small in size but has a large output capacity. Because its frequency has been increased from the normal power supply's 50/60Hz to 1000Hz, it can significantly reduce the weight of the iron core material. Moreover, the rectifier diodes in the secondary circuit of the transformer convert electrical energy into a direct current power supply for the welding machine, which can greatly improve the inductance value of the secondary circuit and save more than 30% of the user's power consumption.

The principle of the capacitor energy storage type point convex welding machine is to charge and store energy in a group of high-capacity capacitors through a smaller transformer beforehand

This multi-head gantry spot welder is designed for welding reinforcement ribs on various sheet metal parts.

Infrared non-contact temperature measurement, precise and with a range of 300-1200°C. This product is a subsidiary of the Chinese Academy of Sciences in Beijing.

Seam welding machines are used for seam welding. Seam welding, also known as girth welding, uses a pair of roller electrodes instead of the cylindrical electrodes used in spot welding.

Choosing between a spot welder and a traditional welding machine (primarily arc welding equipment) isn't a simple "one or the other" decision; it's a comprehensive decision based on your product design, production needs, and process requirements.

Spot welding machines and traditional welding machines (usually arc welding machines, such as manual arc welding, argon arc welding, and carbon dioxide shielded welding) have fundamental differences in principles, applications, and operations.

Model			SMD-20T	SMD-20			SMD-40		SMD-60	SMD-80	SMD-100
Rated capacity			50KVA	50KVA			90KVA		180KVA	250KVA	300KVA
Power supply	Rated voltage		380V/ 3φ 50/60Hz
	Switch		600V, 16A	600V, 63A			600V, 100A		600V, 250A	600V, 300A	600V, 350A
	fuse value		50A	63A			100A		250A	300A	350A
Effective working stroke of the electrode			50mm	80mm
Distance between electrode arms			120mm	310mm				300mm
Electrode Arm extension			120mm	460mm
Maximum electrode pressure			4700N	7300-12000N
Standard welding thickness M.S			2mm	3mm+3mm			5mm+5mm		6.5mm+6.5mm	8mm+8mm	10mm+10mm
Secondary Max. Short Current			20KA	20KA			40KA		60KA	80KA	100KA
Rated duty cycle			50%
Secondary voltage			11.1-12.2V			11.9-13.9V
Compressor air pressure			0.6Mpa		0.6Mpa		0.6Mpa		0.6Mpa	0.6Mpa	0.6Mpa
Cooling water		Pressure	4L/min
		Flow	8L/min		15L/min		40L/min		60L/min	60L/min	80L/min
		Temp.	Inlet temperature 15-25°C
		Specific resistance	>5KΩ.CM3