Vacuum Eutectic Furnace for Cold and Hot Separation, V4D

Product Features

Welding Temperature: Actual welding temperature ≤ 600°C.

Vacuum Level: Ultimate vacuum ≤ 10 Pa, Operating vacuum 50 Pa - 200 Pa.

Effective Welding Area: ≤380mm x 310mm

Furnace chamber height: 100mm.

Heating Method: Bottom and top infrared radiation heating, with a semiconductor-grade graphite-doped silicon carbide platform for the heating plate. The graphite-doped silicon carbide platform is durable, resistant to deformation over long-term use, and boasts excellent thermal conductivity, ensuring a more even surface temperature on the heating plate.

Temperature uniformity: ≤±2% within the effective welding area.

Rise Rate: The rise rate can reach 120℃/min.

The V4D hot-cold separation vacuum eutectic furnace is equipped with top heating, which enhances heating efficiency while ensuring more uniform platform temperature, thereby improving welding consistency and quality.

Cooling Rate: Up to 120℃/min (cooling from high temperature of -150℃).

Silicon Carbide Heating Platform: Utilizes a combination of air and water cooling methods to achieve rapid cooling of the heating plate, enhancing the rate of temperature decrease, and preventing device sintering due to excessive temperature difference during the cooling process.

Meets the welding requirements of various solders (≤450℃).

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

Pre-formed welding sheets (available for eutectic welding without flux) and solder paste of various compositions.

Weld porosity rate:

The V4D Vacuum Eutectic Furnace with Heat Separation for cold soldering materials has been verified by numerous customers, achieving a porosity rate of less than 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 can effectively address the issue of displacement during the welding process of small devices (MiniLED, MicroLED, etc.) and solve the problem of solder paste flux splashing in the process (lead frame products, etc.).

Temperature Control and Measurement Systems

The V4D Cold-Hot Separated Vacuum Eutectic Furnace utilizes advanced temperature control technology, achieving a temperature control accuracy of ±1°C.

The V4D vacuum eutectic furnace features a temperature curve with 40 adjustable segments and is equipped with 3 sets of PID (6 sets available) for precise temperature control, ensuring consistent and reliable welding. Temperature control is lag-based, while PID control offers predictive adjustment, enhancing temperature accuracy and stability.

The V4D vacuum eutectic furnace cavity is standardly equipped with 2 sets of thermocouples for temperature measurement. During operation, the equipment can provide real-time feedback on the temperature at any position within the cavity, and the control software displays the temperature curve in real-time, ensuring better temperature control in the welding area and supporting the achievement of an optimal process curve.

Cavity atmosphere environment

The V4D vacuum eutectic furnace with heat and cold separation can be filled with inert nitrogen gas to assist in welding, while meeting the requirements of formic acid and nitrogen-hydrogen mixed gas reduction atmosphere processes. The process atmosphere can be precisely controlled by either time or an MFC mass flow controller, ensuring consistency in each set process. Suitable for welding without flux.

V4D 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 supports an infinite number of process actions, meeting complex process requirements.

Control systems accommodate various welding process curves and can be set, modified, stored, and retrieved based on 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/measurement curves in real-time, ensuring traceability of the device process, and stores them in the corresponding directory automatically based on the process working time.

The V4D Cold-Hot Separation Vacuum Eutectic Furnace features an all-encompassing, fully automatic cavity structure, ensuring reliability for long-term use. 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.

V4D vacuum eutectic furnace with a heated and cooled separation design, featuring a viewing window for observing the sintering process under a microscope. The lid automatically raises and lowers, with all operations except manual placement and removal being controlled by software.

The V4D heating plate is made of pure material without additional structures like cold water pipes, ensuring a more uniform temperature.

The V4D cooling method utilizes the Zhongke Comrade water cooling technology. During heating, water cooling does not affect the uniformity of the thermal field temperature. When 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.

Standard Equipment

1. One main unit 2. One industrial-grade control computer 3. One set of vacuum sintering furnace control software system 4. Nitrogen atmosphere system, formic acid atmosphere system

5. One MFC Flow Meter 6. Graphite Coated Silicon Carbide Heating Platform

【Select Options】

1. Vacuum Pumps (Mechanical Dry Pumps) 2. Molecular Pump Systems 3. Nitrogen-Hydrogen Digital Mixed Atmosphere System 4. Positive Pressure Modules

5. CCD Vision / Microscope 6. Nitrogen-Hydrogen Mixed Gas Atmosphere