The manufacturing process of lost foam casting equipment is actually very simple

Many people will be curious about how the lost foam casting equipment works, and want to understand its working principle. In fact, its casting process is very simple. Let's follow the editor to understand it. The molding step of the lost foam casting equipment is to add dry sand to the sand box. To ensure that the dry sand is filled in place when adding sand, first add a certain thickness of bottom sand to the sand box and vibrate tightly, then put the model cluster into With a certain thickness of dry sand, bury the model clusters to one-third to one-half, and then vibrate appropriately to prompt the dry sand to fill the cavity of the model. After filling the sand box and vibrating, the vibration time should not be too long to ensure that the model is not damaged and deformed, and the coating layer does not fall off and cracks. Vibration parameters should be selected according to the casting structure and model cluster form. For most castings, vertical one-way vibration should generally be used. For castings with more complex structures, one-way horizontal vibration or two-dimensional and three-dimensional vibration can be considered. The magnitude of the vibration intensity has a great influence on the dry sand modeling, and the vibration acceleration is used to express the vibration intensity. For castings and model clusters of general complexity, the vibration acceleration is between 10 and 20 m/s2. The amplitude is an important vibration parameter that affects the model to maintain a certain rigidity. The amplitude of the lost foam casting is generally 0.5 to 3 mm. The choice of vibration time is more subtle and should be selected in combination with the casting and model cluster structure. However, in general, the vibration time should be controlled within 10-30 seconds. At the same time, the vibration time when the bottom sand and model clusters are half buried should be as short as possible, and the vibration time after the model clusters are fully buried is generally longer.