How to improve the quality of machine tool castings

In the casting method of machine tool bed Castings, the first thing we use or the first thing we consider is sand casting. First, its cost is very low, and the whole production process is relatively simple, and the production time or cycle is relatively short, but in addition to this way, our machine tool bed casting method is lost foam casting process. In this case, its casting material is generally the casting of resin sand. Its advantages are: first, because the rigidity of resin sand is very good, the overall strength of sand is very high in the initial stage of pouring. This can eliminate defects, such as the elimination of shrinkage. The second is that the molten metal can replace the original position of the ranked plastic, so that it can be cooled and solidified into a solid casting with the same appearance. In fact, there are many castings, especially those used in our machinery. And not only the amount is the largest, but also its shape is very complicated. This involves the casting.