Liquid cooling, with its high thermal conductivity, is widely used in core applications such as automotive engines and computer equipment. Its reliability directly depends on the sealing effect between the radiator piping and the housing. Leakage can not only cause cooling system failure but also damage surrounding precision components. Therefore, sealing connection technology has always been a core issue in the optimization of liquid cooling systems.
Traditional liquid cooling radiator seals often use rubber sealing rings combined with mechanical pressing. This method is simple in structure and low in cost, and can meet basic sealing requirements under normal temperature conditions. However, in real-world applications such as automotive engine compartments and high-performance computer mainframes, liquid cooling systems often face long-term high-temperature environments exceeding 100°C. Rubber materials are prone to aging, hardening, and cracking, leading to a loss of sealing performance. Simultaneously, the tightening force of mechanical pressing gradually decreases with long-term vibration. These two factors result in a persistently high risk of leakage with traditional sealing solutions, becoming a key bottleneck restricting the lifespan of liquid cooling systems.
The innovative application of ultrasonic soldering irons provides a breakthrough solution to the sealing challenges of liquid cooling radiators. This technology abandons traditional rubber seals, achieving a seamless connection between the metal shell and the pipeline through a "micro-melting welding" process, completely eliminating the risk of aging and leakage from both material and structural perspectives. Its core principle utilizes high-frequency vibration energy, acting on the contact edges of the aluminum alloy shell and the copper pipe, causing instantaneous localized plastic deformation of the metal at the contact surface. Under pressure and vibration, the metal atoms tightly interlock, ultimately forming a gapless, integrated metal seal structure.
Compared to traditional solutions, ultrasonic soldering seals offer significant performance advantages. In terms of pressure resistance, the welded seal can withstand pressures of 1.5-2 MPa, fully meeting the actual operating requirements of various liquid cooling systems in automobiles, computers, and other applications, effectively resisting pressure fluctuations during system operation. Regarding temperature resistance, the metal seal structure can withstand temperatures exceeding 200°C, far exceeding the 80-120°C temperature limit of traditional rubber seals, maintaining a stable seal even under extreme high-temperature conditions.
This technological innovation not only solves the long-standing industry problem of seal failure but also simplifies the structural design of liquid cooling radiators. Eliminating the need for additional sealing rings and pressing components reduces the number of parts and assembly steps, while also lowering maintenance costs due to component wear and aging. In fields with extremely high requirements for heat dissipation reliability, such as high-performance computing and new energy vehicles, ultrasonic soldering iron sealing technology is expected to become a mainstream application solution, providing core assurance for the efficient and stable operation of liquid cooling systems and driving technological upgrades in related industries.
