Vacuum Eutectic Furnace with Cold and Hot Separation, V3D

Feature Introduction

Welding Temperature: The actual welding temperature of the V3D hot-cold separation vacuum eutectic furnace is ≤600°C.

Vacuum Degree: Ultimate vacuum ≤ 0.2 Pa, operating vacuum 50Pa-200Pa.

Effective Welding Area: ≤300mm x 300mm

Furnace chamber height: 100mm.

Heating Method: Bottom and top infrared radiation heating. The heat plate utilizes a semiconductor-grade graphite-doped silicon carbide platform. This platform is resistant to deformation over long-term use and boasts excellent thermal conductivity, ensuring a more uniform surface temperature of the heat plate.

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

Rising Rate: Rising rate ≥ 150℃/min.

The V3D Cold-Hot Separation Vacuum Eutectic Furnace is equipped with top heating, enhancing heating efficiency while ensuring more uniform platform temperatures, thereby improving welding consistency and quality.

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

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

Meets welding requirements for various solders (≤450°C).

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 V3D vacuum eutectic furnace with hot and cold separation has been verified by numerous customers during soft soldering, achieving an air pocket rate 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 can effectively address the issue of displacement of small devices during the welding process (such as MiniLED, MicroLED, etc.) and solve the problem of solder paste flux splatter (for lead frame products).

Temperature Control and Measurement Systems

The V3D Cold-Hot Separation Vacuum Eutectic Furnace utilizes advanced intelligent temperature control technology, achieving a temperature precision of ±1℃.

The V3D vacuum eutectic furnace features a temperature curve that can be set up to 40 segments, with 6 sets of PID settings for more precise temperature control, ensuring consistent and reliable welding. Temperature control is lagged, while PID control has a lead-adjusting effect, enhancing both temperature control accuracy and stability.

The V3D cold-heat separation vacuum eutectic furnace cavity is standardly equipped with two 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 of the welding area and supporting the achievement of an optimal process curve.

Cavity atmosphere environment

The V3D cold-hot separation vacuum eutectic furnace is capable of filling nitrogen inert gas to assist in welding, and meets the requirements of formic acid and nitrogen-hydrogen mixed gas reduction atmosphere process. The process atmosphere can be precisely controlled by time or by an MFC mass flow meter, ensuring consistency in each set of process completion. Suitable for welding without flux.

V3D 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 offers an infinite number of process actions, meeting complex process requirements.

The control system accommodates various welding process curves and allows for setting, modifying, storing, and recalling 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/temperature measurement curves in real-time, ensuring traceability of the device process, and stores them in the corresponding directory automatically according to the process working time.

The V3D vacuum eutectic furnace with cold and hot separation utilizes an all-enclosed, fully automatic cavity structure, ensuring reliability for long-term use. The cover automatically closes during operation, preventing device displacement and avoiding vibration that could affect焊接 quality. The single-chamber process meets both heating and cooling requirements. A safety guard design protects the operator.

V3D hot-cold separation vacuum eutectic furnace, featuring an illuminated observation window on the lid for observing the sintering process under a microscope. The lid automatically raises and lowers, with all operations except manual piece handling controlled by the software.

The V3DS heating plate is made of pure material without additional cold water pipes, ensuring a more even temperature distribution.

The V3DS cooling system employs water cooling technology, ensuring that the water cooling does not affect the uniformity of the thermal field during heating. Each heating plate features six independent water cooling units for enhanced temperature uniformity during cooling. Particularly suitable for high-quality packaging welding of gold-tin eutectic and indium solder eutectic.

Unique Advantages
1. Locking Method: Automatically locked via program

2. Heat tube installation: Distributed at 90 degrees at the bottom and top, ensuring even temperature distribution, especially around the four edges of the heating plate.

3. The heating tube comes with a quartz sleeve, ensuring the vacuum in the furnace chamber is unaffected during replacement, for a convenient and quick process.

4. Special-designed brackets ensure the heating tube is centered in the quartz tube, effectively extending its lifespan.

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

6. The vacuum chamber is precision-machined as a single unit using CNC technology, minimizing the risk of welding defects, and boasts a vacuum stability of over 10 years.

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

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

9. The vacuum cavity is processed with special materials, combining 12 years of vacuum design and technology experience to ensure that the vacuum oil pump configuration achieves 2*10^-1 Pa, and the vacuum dry pump reaches 1.3 Pa.