What is the name of the iron sheet hollowing process?

The iron sheet hollowing process is called "metal carving" or "metal carving" process. This process can carve patterns and characters on the iron sheet by cutting, drilling and polishing the metal surface, forming beautiful decorative effects. Metal carving can be applied to various materials, such as aluminum plate, stainless steel plate, copper plate, etc., which has high decorative and artistic value. Therefore, the iron sheet hollowing process is called "metal carving" or "metal carving" process.