Introduction
The pouring temperature of steel castings is a key factor affecting their performance. For example, the casting performance of alloy steel castings such as high chromium steel and high manganese steel is closely related to their pouring temperature. The pouring temperature is too high, the hardness and strength of the castings will increase, but the toughness will decrease; and the pouring temperature is too low, the casting performance will become worse. Therefore, in the actual production, how to determine the pouring temperature of steel castings is an important issue.
Factors influence the pouring temperature of steel castings
One of the most important factors that influence the pouring temperature of steel castings is the composition of the alloy. For example, when the alloy contains a high content of silicon and manganese, the pouring temperature is lower than that of low silicon and manganese alloy. In addition, different alloying elements have different effects on the pouring temperature. For example, adding chromium to the alloy can reduce the pouring temperature, but adding molybdenum to the alloy can increase the pouring temperature.
The pouring temperature also changes with the size and shape of the castings. Overweight, large and complex castings require higher pouring temperatures because the molten metal must fill it evenly. The pouring temperature also changes with the geometry of the castings. The ductility of thin-walled castings requires a high pouring temperature; while thick-walled castings can usually filled in at a lower pouring temperature.
Conclusion
In general, the pouring temperature of steel castings is related to the composition of the alloy, the shape and size of the castings. When determining the pouring temperature, we should first understand the above factors, and then adjust the pouring temperature according to the parameters of these factors. At the same time, we should pay attention to the temperature control system and other monitoring instruments in order to ensure the rationality and uniformity of the pouring temperature.
