Metal casting machinery handles the removal of excess metal from the castings through various methods and processes. One common technique used is called "trimming" or "fettling." Trimming involves cutting or grinding off the excess metal from the castings to achieve the desired shape and dimensions. This process can be performed manually using handheld tools or automated machinery equipped with cutting blades or grinding wheels.
Another method employed is the use of vibratory finishing or tumbling. In this process, the castings are placed in a vibratory bowl or drum along with abrasive media. The vibrations cause the media to rub against the castings, effectively removing the excess metal and smoothing the surface. This method is often used for smaller and more intricate castings.
Additionally, some metal casting machinery utilizes shot blasting or sandblasting techniques. Shot blasting involves propelling small metallic particles or shot at high speeds onto the castings, which removes the excess metal and provides a uniform finish. Sandblasting, on the other hand, uses high-pressure air to propel sand or other abrasive media onto the castings, effectively removing the excess metal and creating a textured surface.
Overall, metal casting machinery employs a range of techniques such as trimming, vibratory finishing, shot blasting, and sandblasting to handle the removal of excess metal from castings. These processes ensure that the castings meet the desired specifications in terms of shape, dimensions, and surface finish, resulting in high-quality and functional metal components.
Metal casting machinery typically handles the removal of excess metal from the castings through various methods such as grinding, cutting, or sandblasting. These techniques are employed to achieve the desired shape, size, and surface finish of the final product.
