Molding Process For Bucket Teeth

Now bucket teeth are made by sand casting, investment casting and squeeze casting. Different castings have different characteristic.

Molding material for sand casting is cheap and easy to get. The mold manufacturing is also easy. But there is always some defaults on bucket teeth surface. Such as sticky sand, sand inclusion, shrinkage hole, shrinkage porosity and so on.

Investment casting has high size precision, rough surface and small machining allowance. But it needs to set high riser for feeding. So that process yield rate will be decreased.

It is applying pressure to metal liquid continuous in the squeeze casting process. It can make the metal liquid solidified quickly. The grain refinement is better. Bucket teeth product has higher compactness because it solidification under pressure. Without using sand mold and sand core can prevent causing casting defaults at the same time, the product quality will be good, the process yield and production efficiency will be higher. While as a new kind of material forming technology, squeeze casting is usually in simple process, high material utilization rate, small machining allowance. Squeeze casting can save energy and without any waste discharge.