NS Series Vacuum Reflow Soldering Machine, NS260

Feature Introduction】

The NS series vacuum reflow soldering machines are the third generation of compact vacuum reflow soldering equipment introduced by Zhongke. Specifically designed for small batch production, R&D, and functional material testing applications. The NS series vacuum reflow soldering operates under vacuum to achieve void-free solder joints, fully meeting the requirements of the R&D department for testing and small batch production. The NS series can reduce the void range in the焊接 area of the devices to 2%, compared to the 20%~30% range of conventional reflow soldering. The NS series is applicable for soldering without flux, achieving void-free joints, and can be used with various atmospheres such as N2, N2/H2 (95%/5%), and more. It can utilize lead-free solder paste or tape processes, as well as soldering without flux. The software control system of the NS series vacuum reflow soldering is user-friendly, allowing direct control of the equipment and setting various welding process curves, which can be modified and created based on different processes.

The NS series vacuum reflow soldering machines are primarily designed for high-reliability welding applications, such as industrial-grade products requiring nitrogen protection or gas-phase welding. These include material testing, chip packaging, electrical equipment, automotive products, train control systems, aerospace, and aviation systems, where high circuit reliability is essential. To eliminate or reduce voids and oxidation in welding materials, vacuum reflow soldering machines are the ideal choice. To achieve high-quality焊接, vacuum reflow soldering machines must be used. This is a process innovation by welding experts in various fields from Germany, Japan, the United States, and other countries.

Industry Applications: The NS series vacuum reflow soldering machines are the ideal choice for R&D, process development, material testing, and device encapsulation testing. They are perfect for high-end research and production in enterprises, research institutes, universities, and aerospace fields.

Application Fields: Primarily used for defect-free welding and appropriate no-clean soldering in applications such as chip and substrate bonding, package and lid sealing, etc., including IGBT encapsulation, solder paste processes, laser diode packaging, hybrid integrated circuit encapsulation, package and lid sealing, MEMS, and vacuum encapsulation.

Vacuum reflow soldering has now become an essential piece of equipment for developed countries in Europe, America, and elsewhere, particularly in high-end manufacturing sectors such as aviation and aerospace. It has also been widely applied in fields like chip packaging and electronic welding.

Product Features

1. Welding in a true vacuum environment, achieving a vacuum level of up to 6*10^-1 Pa.

2. Pressure Holding Rate: Chamber vacuum below 30 Pa (pumped to 5 Pa, valve closed to start pressure holding) within 30 minutes for a low-activity flux welding environment.

3. Professional software control for an excellent operational experience.

4. A programmable temperature control system with up to 40 segments for the industry, capable of setting process curves.

5. Temperature settings are adjustable, allowing for a more precise工艺 that closely matches the welding material's process curve.

6. Standard equipment includes cooling technology for rapid temperature reduction.

7. Online temperature measurement feature. Achieves uniformity measurement of the welding area temperature. Provides expert-level support for process calibration.

8. Nitrogen or other inert gases, to meet the welding requirements of special processes.

9. Temperature of 450℃ (higher options available), meets all soft soldering process requirements.

10. Meets the requirement for simultaneous heating of both upper and lower greenhouses.

Unique Advantages

Locking Mechanism: Door retraction automated through program

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

3. The heating tube comes with a quartz sleeve, ensuring that replacing the heating tube does not affect the vacuum of the furnace chamber, making it convenient and quick.

4. The specially designed bracket ensures the heating tube is centered in the quartz tube, effectively extending the lifespan of the quartz tube.

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焊接漏焊, and boasts a vacuum stability of over 10 years.

7. The vacuum door automatic locking device is precision-machined as a single piece by CNC, 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 single piece via CNC, eliminating the risk of leakage at the welding points of the vacuum cavity cold water pipes.

9. The vacuum cavity is processed with special materials, combining 12 years of vacuum design and technology experience, ensuring the vacuum oil pump achieves a level of 7*10^-1 Pa, and the vacuum dry pump reaches 2 Pa.