Cold and Hot Separation Vacuum Eutectic Furnace, V3DM

Feature Introduction

Welding Temperature: The actual welding temperature of the V3DM hot-cold separation vacuum eutectic furnace is ≤600℃.

Ultimate vacuum ≤ 0.3 Pa, operating vacuum 5Pa-200Pa.

Uniformity of temperature: ≤±1% within the effective welding area.

Effective Welding Area: ≤300mm x 300mm

Furnace chamber height: ≤100mm.

Heating Method: Bottom and top infrared radiation heating, with a semiconductor-grade graphite silicon carbide platform for the heating plate.

Graphite-doped silicon carbide platforms are resistant to deformation with long-term use.

Rise Rate: 150℃/min rise rate.

The V3DM hot and cold separation vacuum eutectic furnace is equipped with top heating, which not only improves the heating efficiency but also ensures a more uniform platform temperature, enhancing the welding process.

Consistency and quality are a must.

Cooling Rate: 200℃/min (from unloaded high temperature to -150℃ range).

Silicon Carbide Heating Platform: Utilizes a combination of air-cooling and water-cooling for rapid heat sink cooling, enhancing the rate of temperature decrease, and preventing device sintering due to excessive temperature difference during the cooling process.

Meets welding requirements for various solders (≤450℃).

For example: In97Ag3, In52Sn48, Au80Sn20, SAC305, Sn90Sb10, Sn63Pb37, Sn62Pb36Ag2

Pre-formed welding strips (suitable for eutectic welding with or without flux) and various types of solder paste.

Weld porosity rate:

The V3DM vacuum eutectic furnace with heat separation ensures, after extensive customer validation during soft soldering, void rates below 2%.

Optional Positive Pressure Module:

The equipment can be optionally equipped with a positive pressure module ≤0.2Mpa, which can meet both positive and negative pressure process requirements. The positive pressure process effectively addresses the issue of displacement of small devices during welding (such as MiniLED, MicroLED, etc.) and solves the problem of solder paste flux splatter in the soldering process (for lead frame products).

Temperature Control and Measurement Systems

The V3DM Cold-Hot Separation Vacuum Eutectic Furnace utilizes advanced intelligent temperature control technology, with a temperature control accuracy of ±1°C.

The V3DM cold-heat separation vacuum eutectic furnace temperature curve can be set up with 40 segments, and is equipped with 3 sets of PID (with 6 options) for precise temperature control, ensuring welding consistency and reliability. Temperature control is lagging control, while PID control has a predictive adjustment function, which can enhance the accuracy and stability of temperature control.

The V3DM cold-hot separation vacuum eutectic furnace is equipped with 2 sets of temperature measuring thermocouples standardly. During operation, it can provide real-time feedback on the temperature at any position within the furnace cavity, and display the temperature curve in real-time within the control software. This ensures better temperature control in the welding area, supporting the achievement of an excellent process curve.

Cavity atmosphere environment

The V3DM vacuum eutectic furnace with heat and cold separation can be filled with inert gas nitrogen to assist welding, and it meets the requirements of formic acid and nitrogen-hydrogen mixed gas reduction atmosphere processes. The process atmosphere can be precisely controlled by time or by an MFC mass flow controller, ensuring consistent completion of each set process. Suitable for welding without flux.

V3DM Cold-Hot Separation Vacuum Eutectic Furnace Configuration Software Control System:

The software control system is based on the Windows operating system and is easy to operate.

Process programming can be achieved through conditions such as temperature, time, pressure, and vacuum, with the software automatically controlling the entire process.

The process curve programming features an infinite number of process actions, catering to complex process requirements.

The control system accommodates various welding process curves and allows for setting, modifying, storing, and recalling according to different processes.

The control system features an integrated analysis function, capable of analyzing process curves to determine information such as heating, constant temperature, and cooling.

The software control system automatically records the welding process and temperature control/temperature measurement curves in real-time, ensuring traceability of the device's process, and automatically stores them in the corresponding directory based on the process working time.

The V3DM Cold-Hot Separation Vacuum Eutectic Furnace features an all-automatic closed-cavity structure for long-term reliability. The lid automatically closes during operation, preventing component displacement and avoiding vibration that could affect welding quality. The single-chamber process meets both heating and cooling requirements. Hand-protection design ensures operator safety.

V3DM Cold-Hot Separation Vacuum Eutectic Furnace, featuring an illuminated viewing window on the lid for observing the sintering process under a microscope. The lid automatically raises and lowers, with all other operations, except for manual handling of parts, controlled by the software.

The V3DM heating plate is made of pure material without additional structures like cold water pipes, ensuring a more even temperature distribution.

The V3DM cooling method utilizes the Zhongke Comrade's water cooling technology. During heating, water cooling does not affect the uniformity of the thermal field temperature. During cooling, each heating plate features six independent water cooling units, resulting in even higher temperature uniformity. Particularly suitable for high-quality encapsulation welding of gold-tin eutectic and indium solder eutectic.

Unique Advantages

Door Locking Method: Automatically locked via program

2. Heating tube installation method: Distributed at a 90-degree angle at the bottom and top, ensuring even temperature distribution, especially at the four edges of the heating plate.

3. The heating tube comes with a quartz sleeve, ensuring that the vacuum in the furnace chamber is not affected during replacement, for convenient and quick maintenance.

4. A specially designed bracket ensures the heating tube is centered within the quartz tube, effectively extending the quartz tube's lifespan.

5. The heating tube features a high-temperature coating on its back, enhancing heat utilization efficiency.

6. The vacuum chamber is precision-machined as a single piece using CNC technology, reducing the risk of焊接漏焊, and boasts a vacuum stability of over 10 years.

7. The vacuum door automatic locking device is made through CNC integrated processing, effectively enhancing the stability of micro-positive pressure and suitable for long-term use.

8. The vacuum cavity cooling pipeline is precision machined as a CNC integrated unit, eliminating the risk of water leakage from the welding of the vacuum cavity cold water pipes.

9. The vacuum cavity is processed with special materials, combined with 12 years of vacuum design and process accumulation, ensuring the vacuum oil pump achieves a vacuum of 3*10^-1 Pa and a vacuum dry pump of 1.3 Pa.