Castings are an important part of mechanical products. In order to improve the overall performance of mechanical products, it is necessary to improve the performance of castings accordingly. Different casting materials have different casting properties.
1. The cast steel
The output of cast steel is relatively stable, while the quality, variety and performance of cast steel, alloy steel and special steel proportion are constantly increasing. Adopting various refining processes and technologies, developing new cast steel materials can improve their strength, toughness and special properties.
2. Casting light alloy
Casting light alloy has a series of excellent characteristics, such as low density, high specific strength and corrosion resistance, which will be widely used in aviation, aerospace, automobile, machinery and other industries. Especially in automobile industry, to reduce fuel consumption and improve energy efficiency, it is a long-term development trend to replace steel and iron castings with aluminum and nickel alloy castings. It focuses on non-pollution, efficient and easy to operate refining technology, metamorphism technology, grain refining technology and rapid detection technology before furnace. In order to further improve the material performance and give full play to the material potential, high-quality aluminum alloy materials, especially aluminum matrix composite materials, can be developed to meet the performance requirements of different working conditions. Strengthen the research on the smelting technology of cluster alloy, develop and research on the continuous alloy die casting and extrusion casting technology and related technology; Improve the development and research of smelting equipment and related technology and process of ferroalloy.
3. Casting composites
The casting composite material will be devoted to the development and research of metal matrix composite base material and reinforced component material to accelerate the development and research of its application. Casting composite material has become a new engineering material in the 21st century.
4. Cast iron
The application and development of cast iron are enduring because of its low cost, good technicability and resource and energy saving from remelting and regeneration.
The inner quality of castings mainly depends on the properties of casting materials, and the quality of castings will also be improved with the increasing requirements of national economy on machinery and equipment.