The performance requirements of the product are strict. The casting body and cast test bar shall meet the following requirements: tensile strength RM ≥ 270MPa and hardness 190hbw-240hbw. The internal structure is complex, the flow channel and inner cavity are crisscross, and the embedded stainless steel pipe process has high dimensional requirements. The pipe is made of 304 profile by wire cutting and assembly welding;
Compressor piston it is the core component of 550kv-sf6 circuit breaker in EHV power grid, a national key project. The first one in China has passed 5000 type tests. The material of the product is fcd450, the overall X-ray flaw detection is grade 2, and the wall thickness is thin. It is a single purchase.
Material: QT400-18, HT250, RuT420.
Unit weight 40 ~ 700kg.
Water oil double cavity, complex casting process and high technical requirements, with a yield of more than 94.5%, and more than 4500 pieces can be produced every year.
This product is the core part of a medium speed marine diesel engine authorized by man B-W company. It is the first company in China to pass the license production certification of L23 / 30h diesel engine piston of man B-W company. Material QT700-2. Weight 22kg. The rotating speed is 900. The wall is thin, the inner cavity is complex, and the casting and machining are difficult. 300 sets are supplied to the main engine factory every year.
Internal combustion engine supercharger box jointly developed by GE company of the United States and CRRC, and undertaken by our company. Material: special alloy cast iron, weight 360kg. The inner cavity is complex and the casting process is special. The double cavity mud core is adopted, and the machining geometric tolerance is 0.009. At present, the driving mileage is millions of kilometers. The annual supply volume is 500 sets.
L30 / 40 / man medium speed diesel engine cooling water jacket, material gt400-18, unit weight 250kg
The overall X-ray flaw detection is above grade 2, and the machined surface is free of defects, accounting for more than 80% of China’s installed market.