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Medium Frequency Small Size DC Welding Machine For Electrical Copper Relay / Shunt

Medium Frequency Small Size DC Welding Machine For Electrical Copper Relay / Shunt

Medium Frequency Small Size DC Welding Machine For Electrical Copper Relay / Shunt
Medium Frequency Small Size DC Welding Machine For Electrical Copper Relay / Shunt
Medium Frequency Small Size DC Welding Machine For Electrical Copper Relay / Shunt
Product Details:
Place of Origin: China
Brand Name: HWASHI
Certification: CE/CCC/ISO
Model Number: WL-MF-25K
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: negotiation
Packaging Details: sea worthy wooden package
Delivery Time: 7-30 working days after received your payment
Payment Terms: L/C, T/T
Supply Ability: 50 sets per month
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Detailed Product Description
Name: Medium Frequency MF DC Spot Welding Machine Suitable For Hardware Application: Welding For Metals.
Max Welding Current: 28kA Welding Model: 101 Types
Mobile Feeder Length: 16400mm Feeder Moving Speed: 800mm/sec
Service Life: 8-10 Years Duty Cycle Rate: 20%
Rated Power: 25KVA
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dc spot welder


medium frequency welding

Medium Frequency Small Size DC Welding Machine for Electrical Copper Relay / Shunt



MF DC Inverter Spot Welder is one of the newest resistant welding technology


The three-phase power supply, through rectified by a special inverter, is converted into 1000Hz AC voltage and then is transmitted to a medium frequency transformer so the current is rectified in order to supply DC welding current.


The advantage is that it helps to greatly reduce the energy of iron core material, as the frequency of welding transformer is promoted from 50/60Hz of mains supply to 1000Hz.


Besides, the commutation diode of subloop of transformer could transform the electric energy into DC power which is used to provide power for welding.


Under such circumstance, the inductance coefficient of subloop could be improved dramatically and the production cost could be minimized because the inductance coefficient is an important factor that results in energy loss but could almost be ignored in DC welding circuit.





1) Advanced welding machine, adopt principle of MF inverter . Change the three phase AC power into DC power.

2) Welding current is DC , no inductance , higher heat input and output efficiency , more reliable and stable welding quality

3) Three phase load balance, power factor is close to 1

4) Intelligent digital controller, more precise and faster control of the welding current. The adjustment precision is 20 times higher than the AC machine

5) Reduce the production cost, save energy, reduce the requirement for cables and maintenance cost, improve the induction factor.

6) Store energy in a special inverter, more adaptation to the fluctuation of the power grid.

7) Smaller size and lower weight of welding transformer, one third of the AC machine .

8) Be able to weld aluminum and galvanized material product

9) Especially suitable for welding three-layer metal sheet or very thin product






Items Specification
Display 5 Inches Blue Display Screen
Rated Power 50KVA
Input Voltage AC 380V, 50Hz
Duty Cycle Rate 20%
Maximum Short Circuit Current 25000A
Inverter Frequency 1000Hz
Welding Cycle Period 11
Welding Pulse Times 3
Current Slow Rise And Down Control Yes
Stored Welding Models 20
Throat Depth 300mm
Cylinder Size ¢100x100mm





Sensor, LED and its lead, copper foil and vanished wire, relay, watch, capacitive slug and lead, copper wire, resistance pin, inductance, battery and stabilizer link, socket, welding lightning with tungsten and molybdenum material, silver contact and copper sheet, etc.





1. HWASHI is the leading brand in resistance welding industry in China for 20 years; Factory direct sale, competitive price.

2. Customized Service: We can help to design and develop the welding machine according to your requirement. We are flexible and capable Supplier.

3. Genuine Product with Excellent Quality: 12 months warranty. Our machines are strictly complied with ISO9001:2000 and China Compulsory Certification. Most of our machines enjoy 8-10 years service life. 100% guarantee test before delivery.

4. After Sales Service and Technical Assistance: 24 hours technical support by email. Our professional team is always here willing to be your technical consultant.

5. Quick Delivery: Our company provides just-in-time delivery.

6. Prompt Response to Customers: Your satisfaction is the goal we pursue.




Medium Frequency DC Welding Machine for Electrical Copper Relay / Shunt








dc spot welder,

Spot Welding Tool

Contact Details

Contact Person: Brian Chen

Tel: +8613380655812

Send your inquiry directly to us
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