MDVES-3545-3 6 Offline multi-layer vacuum soldering furnace mass production type

Product Introduction

MDVES-3545-3/6 Offline multi-layer vacuum soldering furnace mass production type

Model: MDVES-3545-3/6

Welding area 350 * 450MM * 3 layers

Welding area 350 * 450MM * 6 layers

Single and double warehouses can work independently

Ultimate vacuum degree 10Pa

Heating rate 40 ° C/min, cooling rate 60 ° C/min

Lateral temperature difference ± 3 ℃

Formic acid+nitrogen, reducing protective gas

Siemens PLC control system

Welding process plan for on-board IGBT power module

Process plan for multi-layer vacuum welding furnace - overall process time of 30min/furnace

SAC305 technological process：

Preheating section preheating, formic acid reduction

1. Vacuum to a set vacuum level below 1mbar

2. Fill with nitrogen gas and set the flow rate to 60-100L/min to 950mbar

3. Heat up to 200 ℃

4. Maintain the temperature for 30 seconds while vacuuming to 1 mbar

5. Fill with formic acid, set the flow rate to 30L/min, and charge to 850mbar

6. Maintain 150S in a formic acid environment at 200 ℃

Welding section vacuum extraction and bubble discharge

7. Heat up to welding temperature of 260 ℃

8. After reaching the target temperature, maintain for 30 seconds

9. Vacuum to 1mbar, maintain for 60s after reaching the vacuum level

10. Charge nitrogen to 1000mbar at atmospheric pressure

cooling

11. Set target temperature of 45 ℃ and cooling water temperature of 23 ℃

12. End after reaching the target temperature

Process Plan for Offline Vacuum Welding Furnace