As the stainless steel casting cleaning is not timely or long time not used, the surface will have a lot of black spots. This is the phenomenon of spheroidization, a great impact on the use of today Xiaobian with everyone to understand how to solve the stainless steel castings produced by the phenomenon of spheroidization.
1. Ensure that the addition of the nodularizer is sufficient.
2. To ensure that the stainless steel castings in the normal ball reaction when the amount of alloy must be appropriate.
3. To strictly control the sulfur content of the original hot metal, and the use of low-sulfur pig iron.
4. To improve the absorption rate of nodularizer, try to prevent the burning of magnesium.