Abstract

        In 2020, Shanggu's engineering team faced a series of challenges such as high temperature resistance, low temperature resistance, corrosion resistance, and product resilience requirements for the sealing of key parts in internal combustion engines/turbochargers, and successfully broke through the production technology difficulties of metal W-rings and metal multi wave rings. By using high nickel alloy stainless steel material that is resistant to high temperature and corrosion, this metal W-ring can achieve sufficient compression deformation while ensuring effective rebound, thereby achieving a reliable sealing effect that satisfies customers.

        After a series of rigorous tests, the results showed that the sealing solution not only achieved sealing effects beyond expectations, but also ensured high reliability sealing that satisfied customers.

Application Challenge

        In the environment of cold and hot cycles, factors such as thermal expansion, deformation, and aging pose severe challenges to the sealing performance. Therefore, it is necessary to ensure the long-term stability of product resilience and sealing performance to ensure the reliable operation of the engine. The sealing of internal combustion engine turbochargers/turbochargers/gas turbines faces the following specific challenges:
        ·Working temperature: The sealing component needs to maintain the required sealing performance within the temperature range of -100 ℃ to 800 ℃;
        ·Resilience: Room temperature elasticity requirement: plastic deformation of axial width shall not exceed 4%; High temperature elasticity requirement: plastic deformation of axial width shall not exceed 6.5%;
        ·Sealing medium: providing reliable sealing solutions for gases such as air, gas, exhaust, acidic atmosphere, etc;
        ·High reliability requirement: It is required that the seals can operate stably for a long time to ensure continuous sealing effect, thereby reducing the frequency of maintenance and replacement.

Application Effect

The sealing effect exceeded expectations 

        After testing, the leakage test results of the system were obtained after applying the Shanggu sealing case<0.67 × 10-3 (m3/h), and maintain sealing performance under a test pressure of 10MPa.
High reliability 

        Compared with other types of sealing rings on the market, metal W-rings exhibit significant advantages in high temperature resistance, product resilience, and corrosion resistance. These sealing rings have achieved long-term high reliability, effectively ensuring sealing performance and ensuring the safety and stability of internal combustion engine turbochargers/gas turbines during operation, winning recognition from globally renowned enterprises.

Solution-Product Display

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