Casting includes melting and molding. In fact, a casting worker is similar to a smelting worker. Smelting and casting workers just melt iron into water and then pour it into the model to obtain a blank with a specific shape. To tell the truth, unless you are in a big factory or a small factory, the induction furnaces you use now are relatively simple to smelt, such as the electric arc furnace in a big factory, which has strict requirements on composition. If you take the exam, you can generally take the intermediate exam. Large factories can generally organize exams, while small factories generally register for exams themselves. Specifically, you need to ask the local evaluation site. You can check it yourself.