Cobalt Alloy Valve Seats in Industrial Generators Fuelled by Biogas

In recent years, the industrial generator market has experienced rapid growth, with expanding application areas and increasingly complex operating environments. Generators must not only withstand high temperatures and pressures but also address challenges posed by various special fuels. Take the example of a client of German company Onets GmbH, whose industrial generators extensively utilize biogas produced from the fermentation of Thai sugarcane peel as fuel. This biogas contains impurities and corrosive gases such as H2S, and operates at temperatures as high as 400–500 degrees Celsius. Traditional materials struggle to meet the demands of long-term stable operation under such conditions. In this context, identifying a material with properties such as high-temperature resistance, corrosion resistance, and high hardness has become critical to enhancing the performance of industrial generators. Cobalt alloy has emerged in the industrial sector to address this need, offering new possibilities for the development of industrial generators.

Cobalt Alloy

Cobalt alloy is a cobalt-based alloy with excellent high-temperature resistance, maintaining stable physical and chemical properties at temperatures of 400–500 degrees Celsius without deformation or performance degradation, providing reliable assurance for continuous operation of generators under high-temperature conditions. Secondly, cobalt alloy demonstrates exceptional performance in resisting corrosion from impurity-containing biogas. Corrosive gases such as H2S in biogas have a strong erosive effect on ordinary materials, but cobalt alloy, with its unique chemical composition and microstructure, can effectively resist corrosion and extend the service life of components. Additionally, the high hardness and wear resistance of cobalt alloy enable it to reduce wear and lower maintenance costs when used in frequent contact with valves.

Application of Cobalt Alloy in Industrial Generator Valve Seats

German Onets GmbH Customer As a repair shop with factories in Germany and Turkey and approximately 40 employees, the company undertakes the maintenance of 1,000 to 2,000 sets of industrial generators annually, with business operations spanning Europe, Bangladesh, Turkey, India, and other markets. In its repair work, valve seats are critical components of industrial generators. Intake valve seats are made of iron-based materials, while exhaust valves, which directly contact high-temperature biogas, require higher material standards. Therefore, cobalt alloy's T400 grade was selected as the material for exhaust valve seats.

Cobaly alloy exhaust valve seats (T400) demonstrate significant performance advantages in practical applications. In high-temperature environments, T400 maintains excellent mechanical properties, ensuring tight sealing between the valve seat and valve to prevent gas leakage and enhance the generator's combustion efficiency. When exposed to biogas containing H2S impurities, T400's corrosion resistance effectively protects the valve seat from erosion, reducing the likelihood of failures. Additionally, the T400 Cobalt  alloy valve seat offers excellent adaptability for different generator models, delivering its high-performance advantages for large, medium, or small valve seats, thereby meeting diverse market demands.  

Choose cobalt alloy to inject sustained power into industrial generators.  

In summary, cobalt alloy, with its high-temperature resistance, corrosion resistance, and high hardness, has become the core solution for high-performance valve seats in industrial generators. As demonstrated by actual application cases from German Onets GmbH customers, cobalt alloy valve seats perform exceptionally well under complex operating conditions, effectively enhancing generator performance and reliability while reducing operational costs for businesses. For companies in the industrial generator sector, choosing cobalt alloy means injecting sustained power into equipment and providing a solid foundation for stable business development. We look forward to collaborating with more companies to explore partnership opportunities.