magnesium sand casting_magnesium sand casting

Moreover, green sand molds are reusable; they can be reshaped and reused for subsequent casts, which can significantly reduce material waste. The process also benefits from quicker turnaround times since the cooling and solidification of the metal occur relatively fast due to the moisture content. However, the quality of the surface finish may not be as fine as that achieved with other methods, and excessive moisture can lead to defects like steam holes.

Clay, typically bentonite, acts as a binder in the green sand mixture, giving it the ability to retain its shape when molded. Bentonite is favored because of its swelling properties when combined with water, which enhances the binding effect and allows for better mold strength during the casting process. Water in the mixture also plays a crucial role by activating the clay, creating the plasticity needed for the molding process. Proper moisture content is essential; too much water can lead to defects in castings while too little can make the sand too dry to form adequate molds.

Stainless steel castings can be directly repaired by welding repair methods during use. When the product is repaired by its tungsten argon arc welding, its weld repair area and weld repair depth must meet its regulations. The product is welded The supplemented area refers to the area after expansion.