Green Sand Casting
Sand casting means the main material consisting of the mold is sand, and the melted metal fills the casting cavity only by its gravity. Generally, this method of making the casting products is so-called sand casting. There are several different kinds of sand applying to industrial casting production. The most common types are green sand, resin sand, and sodium silicate. However, green sand accounts for overwhelming usage on the iron casting product. Because of the cheap price, it is very suitable to make the middle and oversized part. If the part is not high demanding on property and specification, green sand mold casting is the ideal option.
The green sand mold casting is made by a mixture of sand, clay, water, and a few additional materials. Among them, the sand is the fire-resisting aggregate. Clay plays the role of adhesive when melted with water. The other additional materials are to improving the casting performances.
Basic Green Sand Mold Casting Process
The basic green sand mold casting process involves only simple steps. Starts with the preparation of mold, pouring molten metal into the sand mold, and remove the sand to release a casting product. But in order to get a good green sand mold casting product, a number of key parameters such as compression strength, permeability. The temperature of the pouring metal shall be controlled and applied correctly and accurately. Furthermore, according to the study and experience accumulation by our engineer, there are other factors that were found to be also important, such as grain size, and composition, fluidity, pouring time, cooling time, humidity, etc.
If you want to know more about what is green sand for casting, what is green sand in foundry, what is green sand casting and what is green sand moulding, please visit our website.
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