What is the main purpose of the core shooter?
The core shooting machine uses compressed air to inject the core sand into the core box at a speed of about so meters per second, and compresses the air. Under the combined action of the kinetic energy of the core sand and the pressure difference, the core sand is compacted into a high-efficiency core-making machine. Although some countries started to use core shooters in the 1950s: but because of the obsolete craftsmanship.
For example, oil sand, baking and a large number of drying boards are still used. The production cycle is long, the dimensional accuracy of the sand core is not high, and the adaptability of the core shooter to the complex sand core of clay sand is limited, etc.), the application area has not been enough After that, although there has been a new process of using water glass sand to shoot cores and blowing carbon dioxide to harden them, there are also auxiliary machines for core shooting machines with carbon dioxide blowing hardening. However, due to the longer hardening time. Casting cleaning It is difficult, and the strength and surface quality of the sand core are not ideal. This kind of core shooting machine has not been promoted yet. In the 1960s, hot core box core shooters and shell core machines appeared successively, that is, using thermosetting synthetic resin as the binder of core sand, the core sand was injected into the heated core box and hardened in the core box. , Take out the sand core which is almost completely usable.
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