Common cast iron parts and types
Good fluidity, low body shrinkage and linear shrinkage. The comprehensive mechanical properties are low, and the compressive strength is about 3-4 times higher than the tensile strength. Good vibration absorption. The elastic modulus is low.
The fluidity is similar to that of gray cast iron; The body shrinkage is greater than that of gray cast iron, while the linear shrinkage is smaller, which is prone to forming shrinkage pores and looseness. The comprehensive mechanical properties are high, and the elastic modulus is higher than that of gray cast iron; Good wear resistance; Good impact toughness and fatigue strength. The vibration damping capacity is lower than that of gray cast iron.
3. Malleable cast iron parts
Poor flowability compared to gray cast iron; The body shrinkage is large, and after annealing, the final linear shrinkage is very small. Before annealing, it is very brittle and the blank is easily damaged. The comprehensive mechanical properties are slightly inferior to ductile iron, and the impact toughness is 3-4 times greater than gray iron.
4. Steel castings
Poor fluidity, high sensitivity to volume shrinkage, linear shrinkage, and cracking. High comprehensive mechanical properties; The compressive strength and tensile strength are almost equal. Poor vibration absorption.
5. Tin bronze and Phosphor bronze parts
The casting performance is similar to gray cast iron. But with a large crystallization range, it is easy to produce shrinkage pores; Poor liquidity; Poor high-temperature performance and susceptibility to brittleness. The strength decreases significantly with increasing cross-section. Good wear resistance.
6. Wuxi bronze and brass parts
Large shrinkage, small crystallization range, easy to produce concentrated shrinkage pores; Good liquidity. Good wear and corrosion resistance.
7. Aluminum alloy parts
The casting performance is similar to that of cast steel, but the strength decreases more significantly with increasing wall thickness.
