Microwave Oven Door Frame Projection Welding Machine
This is a special Resistance Spot Welder tailored for microwave oven door frame processing. It adopts capacitor discharge welding technology, delivering minimal surface discoloration and completely eliminating welding burrs. Fitted with a raster induction system to safeguard operator safety, the equipment will halt operation immediately if hands enter the working area during welding. As a professional Spot Welding Machine, it boasts outstanding performance and practical advantages as below: Equipped with boosting charge and discharge capacitors, this CNC Spot Welding Machine features highly precise output current. It causes slight impact on the power grid, saves energy effectively, and produces workpieces with nearly no deformation or discoloration, requiring no post-weld grinding. Charging voltage adopts feedback control for automatic voltage compensation, maintaining stable voltage output. It ensures consistent welding spots and superior weld quality.
The machine frame is constructed with thick steel sheets for excellent anti-deformation performance.
It outputs DC welding current with low reactance and high effective power.
Built-in overvoltage protection for charging circuits and open-circuit alarm functions for charging loops.
LED display panel simplifies daily operation and maintenance work.
It is configured with a water-cooled transformer assembled from 15000 gauss permeability silicon steel sheets. Adopting an all-copper alloy inner core with circulating cooling water, the transformer reduces impedance and improves power utilization. With a 20% duty cycle, it supports long-duration high-power welding tasks. This design extends service life, lowers operating noise, and creates a more compact and rational overall structure.
High-speed solenoid valves accelerate welding cycles, boost production efficiency and cut operational costs.
The cylinder is made of high-precision, wear-resistant duralumin material. It is rust-proof with low friction and noise, enabling rapid loading and effectively reducing weld spatter.
Stable overall performance brings a low failure rate and longer service life of the equipment.
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MODEL
| Input capacity | Input voltage | Capacitance | energy | Duty cycle | Max pressure | Operational stroke | Electrode stroke | Cooling water flux | Welding capacity (aluminium) |
| KVA | V | UF | J | % | N | MM | MM | L/Min | MM |
| DTR-3000 | 5 | 380 | 30000 | 3000 | 20 | 1900 | 30 | 70 | 2 | 1.2+1.2 |
| DTR-4500 | 5 | 380 | 45000 | 4500 | 20 | 1900 | 30 | 70 | 2 | 1.5+1.5 |
| DTR-6000 | 8 | 380 | 60000 | 6000 | 20 | 4800 | 30 | 70 | 3 | 2.0+2.0 |
| DTR-8000 | 8 | 380 | 80000 | 8000 | 20 | 7800 | 30 | 70 | 3 | 2.2+2.2 |
| DTR-10000 | 10 | 380 | 100000 | 10000 | 20 | 7800 | 30 | 70 | 3 | 2.4+2.4 |
| DTR-15000 | 15 | 380 | 150000 | 15000 | 20 | 7800 | 30 | 70 | 3 | 2.6+2.6 |
| DTR-20000 | 20 | 380 | 200000 | 20000 | 20 | 12000 | 30 | 70 | 3 | 3.0+3.0 |
| DTR-30000 | 30 | 380 | 300000 | 30000 | 20 | 12000 | 30 | 70 | 3 | 3.0+3.0 |
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