Vacuum Fluxless Soldering of AuSn SAC305 solder folil with Forming Gas/Inert Atmosphere
Function Introduction:
1. TORCH promotes a new Vacuum Reflow Oven in RS series which is the third generation of its small Vacuum Reflow Oven (eutectic furnace). It especially designed for the fields in small batch production, R&D and functional materials test, etc.
RS series Vacuum Reflow Oven (eutectic furnace) meets the requirements of heating in vacuum, nitrogen and reducing atmosphere (formic acid) to achieve void-free solder joints, which can fully meet the requirements of R&D department for testing and small batch production.
RS series Vacuum Reflow Oven (eutectic furnace) can minimize the void range into 1% , while the average reflow oven void range is around 20%.
RS series vacuum reflow (eutectic furnace) can be used in all types of solder paste processes,as well as fluxless soldering (solder slice) processes. The inert protective gas nitrogen can be used, or the formic acid or nitrogen-hydrogen mixture can be used for the reduction application.
RS series vacuum reflow (eutectic furnace) software control system, simple operation, can connect control equipment and set various welding process curves, and set, modify, store and recall according to different processes; software comes with analysis function, the process curve can be analyzed to determine information such as temperature rise, constant temperature, and temperature drop. The software control system automatically records the welding process and the temperature control and temperature measurement curves in real time to ensure the traceability of the device process.
2. RS series vacuum reflow is mainly for some highly demanding welding fields, such as military products, industrial grade high reliability products, that is, nitrogen protection can not meet the reliability requirements of products. For materials testing, chip packaging, power equipment,
automotive products, train control, aerospace, aviation systems and other high-reliability welding requirements, the voids and oxidation of solder materials must be eliminated or reduced. How to effectively reduce the void rate and reduce the oxidation of the pad or component pins, vacuum reflow soldering machine is the only choice. To achieve high weld quality, a vacuum reflow machine must be used. This is the latest process innovation of SMT welding experts in Germany, Japan, the United States and other countries.
3. Industry application: RS series vacuum reflow soldering machine is the ideal choice for R&D, process research and development, low to high capacity production, and is the best choice for high-end R&D and production in military enterprises, research institutes, universities, aerospace and other fields.
4. Application: Mainly used for defect-free soldering of chips and substrates, tube shell and cover plate,and perfect solderless soldering, such as IGBT package, solder paste process, laser diode package process, optical communication device soldering, mixing Integrated circuit package, tube shell and cover plate package, MEMS and vacuum package.
5. Vacuum reflow has become an essential equipment for high-end manufacturing of military and industrial enterprises, aviation and aerospace in developed countries such as Europe and the United States, and has been widely used in chip packaging and electronic soldering.
Features
1. It can realize welding under vacuum, nitrogen and reducing atmosphere. The 2-way process atmosphere system nitrogen and formic acid, nitrogen and formic acid are controlled by MFC mass flow meter, which precisely controls the input of process gas to ensure the consistency of each welding process.
2. Temperature control system independently developed by ourself TORCH, temperature control accuracy
±1 °C; 2 flexible (patented technology) temperature sensor in the device cavity, real-time testing the
temperature of heating plate surface and fixture surface or internal, surface of the device, provides temperature feedback for components soldering, and the number of temperature sensors can be increased according to
customer needs.
3. Use graphite material as heating platform to ensure temperature uniformity within the welding area ≤±2%.
4. Equipped with a mechanical vacuum pump, the vacuum can be up to 10Pa.
5. The upper cover of the cavity is equipped with an observation window, which can observe
the internal device changes in the cavity in real time.
6. Through the patented water cooling technology, to achieve rapid cooling and cooling in the
atmosphere, vacuum environment, the industry's fastest cooling effect.
7. The self-developed temperature control software, up to the industry's 40-stage
programmable temperature control system, can set the most perfect process curve.
8. Closed cavity structure ensures long-term reliability. When the upper cover is closed during use, the device will not be displaced, avoid device vibration affecting the quality of the weld.
9. The unique water-cooling technology can ensure that the cavity is not overheated during welding, and at the same time. At the same time, the cooling of the heating plate is achieved during cooling, thereby improving the cooling efficiency.
10. TORCH technology patented technology temperature control system, can ensure the consistency of the welding process, the temperature curve can be realistically repeated in the software system, through the coincidence of the process curve can determine the process consistency of the same process of the same product.
11. Set the process curve by yourself and monitor the set process curve in real time. The process curve is set according to the process requirements (up to 6 sets of PID settings), the process steps are not limited; can be stored, modified, recalled, etc., in the process curve software. the process curve during welding is displayed in real time and automatically saved, which is convenient for the process traceability; the software has its own process curve analysis function to analyze the heating, constant temperature and cooling; The unique welding curve repeating display technology of the same process can prove the consistency of each sintering process by the coincidence of the process curve, ensuring that the device process of each soldering is consistent.
12. The software has anti-error interlocking, over-temperature, over-pressure, time-out alarm and other protection functions. When the hardware of the device fails or the software is set incorrectly, the software automatically prompts and alarms to determine whether the process continues.
Equipment Parameter
| Model |
RS220 |
| Soldering Size |
220*220mm |
| Furnace height |
40mm(other Hights is optional) |
| Temperature Range |
Up to 450ºC |
| Connector |
Serial 485 network / USB |
| Control Mode |
Software control (temperature, pressure, etc.) |
| Temperature curve |
can store several curves Temperature of 40 segments |
| Voltage |
380V |
| Rated Power |
9KW |
| Actual Power |
6KW(without vacuum pump) |
| Dimension |
600*600*1300mm |
| Wight |
250KG |
| The maximum heating rate |
120ºC/min |
| The maximum cooling rate |
Only water-cooled 60ºC/min, Air-cooled + water-cooled 120ºC/min |
| Cooling Way |
Air-cooled / water-cooled (shell, heating plate) |
Configuration List:
- 1 set vacuum reflow soldering furnace main machine.
- 1 set temperature control system (Torch technology).
- 2 sets Temperature measuring system (comrade technology).
- vacuum system 1). 1 set vacuum pump (mechanical oil pump), 2) 1 piece vacuum valve, 3) 1 piece vacuum gauge
- 1 set graphite heating platform (hard graphite).
- 1 set water cooling system (including water cooling machine).
- 1 set nitrogen atmosphere system.
- 1 set formic acid atmosphere system.
- 1 set vacuum reflow welding control software system (Torch technology software control system).
- 1 set industrial computer (advantech industrial computer).
- 1 set MFC mass flowmeter.
- 3 heating pipes and 2 thermocouples.
Optional:
- vacuum system: Vacuum pump (mechanical dry pump).
- Nitrogen hydrogen mixture atmosphere.
- Upper heating system.
- CCD video system
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