The formation mechanism of scale in the hot core box of the sand core shooting machine is mainly due to the impact of the sand jet airflow on the surface of the core sand during the sand shooting process, part of the resin is broken, and a small amount of resin is pressed and adhered to On the surface of the core box, a layer of hard and dense hardened resin scale is gradually formed on the surface of the core box.
In sand compaction, sand flow energy and pressure difference are the two main factors of core shooting machine sand compaction. In addition, poor exhaust can also lead to poor sand core compactness. Let’s analyze these three main influencing factors and how to solve them.
The core shooting machine has been widely used in recent years. Because the use of core shooting modeling can save the high salary of sand core molding workers, the foundry now prefers to use the core shooting machine to produce sand cores. Therefore, improving the production efficiency of core shooting machines has become one of the most concerning issues of foundry processing plants.
The core shooting machine mold is the key structure of the core shooting machine to produce sand core products. Whether the core shooting machine can produce good quality and high-quality products, the mold plays a very important step. So, here comes the problem:
Sand leakage in the core shooting machine is a common problem. There are different solutions for sand leakage at different locations. Briefly analyze several situations:
The casting process flows: liquid metal → filling → solidification shrinkage → casting. Liquid metal is poured into a mold cavity suitable for the shape and size of the part, and it is cooled and solidified to obtain a blank or part production method, which is usually called liquid metal forming or casting.
The casting methods in the metal casting process include two main types, sand casting and special casting.
The difference between the coated sand core shooting machine and the coated sand shell core machine is mainly on the casting mold installed on the equipment. Therefore, the production method is also different. They are mainly used for sand core casting in foundries. The appearance of this equipment marks the development of the foundry industry towards automation. The original casting shape will gradually be eliminated.
