With the increasing requirements of energy saving and environmental protection as well as reducing production costs, automobile parts made by casting make full use of the advantages of casting forming, the original stamping, welding, forging and casting several parts, through reasonable design and structure optimisation, to achieve the casting of the integrated parts forming, which can effectively reduce the weight of the parts and reduce unnecessary This can effectively reduce the weight of the parts and reduce unnecessary machining processes, thus realising the lightweight and high performance of the parts.
Under the premise of ensuring the strength and safety performance of the car, reduce the overall mass of the car as much as possible, realise the light weight of the car castings, so as to improve the dynamics of the car, reduce the fuel consumption, and reduce the exhaust pollution. Automobile overall quality of every 100kg, 100km fuel consumption can be reduced by 0.3~0.6L, such as the car weight reduced by 10%, fuel efficiency can be improved by 6%~8%. With the need for environmental protection and energy saving, the lightweight of the car has become the trend of the world's automotive development, the lightweight of automotive castings has also become one of the important development direction of automotive castings.
In addition, improve the performance of materials, so that the unit weight of the parts can withstand higher loads, is one of the methods to effectively reduce the weight of casting car parts. Bracket-type structure castings account for a considerable proportion of automotive castings, and thus the development of its castings has become one of the focuses of attention. Through heat treatment and other measures, the microstructure of the material is changed so as to improve the strength, stiffness or toughness of the parts, which can effectively reduce the weight of the parts.