Vacuum aluminum brazing is a precision aluminum component joining process that utilizes magnesium vapor from the brazing filler metal to break down the oxide film on the aluminum surface, achieving corrosion-free, highly airtight, and extremely clean connections without the use of any chemical fluxes. Compared to traditional aluminum brazing, its products exhibit extremely high airtightness and quality. The vacuum environment eliminates gas interference, resulting in an extremely dense weld with virtually no porosity or leakage risk. In recent years, vacuum aluminum brazing has been primarily used in aluminum plate-fin heat exchangers, automotive radiators, automotive air conditioning evaporators, condensers, radar network antennas, and waveguides.
Recently, we designed the RVB-101012-AL model vacuum aluminum brazing system for a client, mainly for vacuum aluminum brazing of Al3003. Its specific parameters are as follows:
| Furnace type | Horizontal type,single chamber, internal recycle |
| Loading method | Front loading |
| Effective working zone size | 1000*1000*1200(W×H×L mm) |
| Max. loading weight | 1200kg |
| Power supply | 3 Phase 380V(±5%);50Hz |
| Total power | 270kw |
| Heating power | 210kw |
| Power consumption | 120-180 kwh per hour |
| Max.desgin temperature | 750℃ |
| Max.working temperature | RT-700℃ |
| Temperature uniformity | 9 Points temp testing (±5℃) |
| Temperature control accuracy | Type K thermocouple ±1.2℃ |
| Quantity of heating zones | 10 Independent temperature control zones |
| Heating element | Nickel-chromium alloy strip |
| Time to reache working temperature | ≤45min |
| Heating rate (empty furnace) | 0~20℃ /min(Speed is adjustable and controllable) |
| Ultimate vacuum | 6.7*10-4 Pa(empty furnace, cold state, after thorough baking) |
| Working vacuum | 6.7*10-3 Pa |
| Time to reach working vacuum | ≤40 min(After diffusion pump pre-heating,empty furnace,cold state) |
| Nitrogen consumed per furnace | ≤17m³ |
| Pressure rise rate | ≤0.67 Pa/h (empty furnace, cold state) |
| Control mode | PLC automatic / manual control interlock protection |
| Equipment color | Customized |
Should you have any technical questions or requests, please feel free to contact kevin.liu@vacfurnace.com at any time; we are dedicated to serving you.
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