CERM has different production processes and technologies for various metal alloys, and most of the production equipment are manufactured and run on its own, perfectly achieving the mutual promotion and improvement of production processes and equipment, assisting customers to solve difficult material problems or providing customized material processing. Its extraordinary and fast-growing product innovation capability is widely respected and praised in the market!
CERM has independently developed alloy processing technology with higher temperature bearing capacity and more mechanical deformation. Refractory alloys are characterized by poor thermoplasticity, small thermal processing window, and large deformation resistance, and these problems occur during the thermal processing all have their solutions.
As a key process for CERM to produce high-quality cemented carbides, Spark Plasma Sintering, SPS for short, uses pulsed DC current to create spark discharge between metallic powder and granules inside the graphite die, to form local high-temperature field and discharging impact pressure, purify surface and diffuse electric field, for the purpose of rapid sintering. SPS is characterized by fast heating and cooling rate, short holding time, low sintering temperature during the process, thus it can effectively inhibit grain growth, and fabricate high-density, ultrafine-structured materials by increasing the pressure while sintering.
CERM has solved a series of difficult technical problems in the production of high-temperature alloy precision castings such as large-size thin-walled castings, complicated shaped structural castings, etc. With these key technical breakthroughs, its developed and produced high-temperature alloy precision castings are able to satisfy the needs of users.
CERM adopts direct hot isostatic pressing process for powder high-temperature alloy products. The main process flows includes vacuum induction melting master alloy, plasma rotary electrode process (PREP) powder making, powder processing, degassing, sleeve sealing & welding, hot isostatic pressing (HIP) forming, machining, heat treatment, non-destructive ultrasonic testing, performance testing, product labeling and packaging, etc.
The fabrication technology of highly homogenized refractory superalloy turbine disk includes electroslag remelting continuous unidirectional solidification and 3D integral forging. Electroslag remelting continuous unidirectional solidification technology is applied to prepare high-purity, low-segregation, large-size unidirectional solidification ingots; 3D integral forging technology can prepare turbine disk forging blanks with high structural consistency, which can be die forged to prepare turbine disk to completely avoid low ultrasonic detectability and poor performance consistency caused by non-homogeneous structure.
Ti-Al intermetallic compound-based materials (incl. TiAl, Ti3Al, and Ti2AlNb alloys) have low density, high specific strength, and good oxidation resistance. These materials can meet the urgent requirements of various types of equipment and instruments to reduce their weight and improve efficiency, thereby effectively improving their own performance and better effecting other core components.
In the case of basically the same composition, the ultra-pure metal material and highly homogeneous structure have greatly improved the material’s performance, service life and reliability. CERM aims to produce "highly homogeneous & ultra-pure" key metal materials, and has developed a highly homogeneous and ultra-pure electroslag remelting refining process and mounting platform.
Based on independent research and development, CERM has made major breakthroughs in high-temperature alloy vacuum horizontal continuous casting technology. It has overcome the vacuum sealing comprehensive technology of high-temperature moving surfaces and dragging technology of high-precision continuous casting, and has successfully developed integrated technology and packaged equipment of the high-temperature alloy vacuum horizontal continuous casting. For the first time in the world, it has realized the smelting and continuous casting of superalloys in a complete vacuum environment, which can truly enable the high-quality continuous casting molding of the entire superalloy family, and without exaggeration, the packaged integrated technologies reach the world advanced level.
