Different castings have different casting methods. Sand casting is commonly used, followed by special casting methods, such as: metal casting, investment casting, gypsum casting, etc.
Cemented carbide forging die is also called forging die. It has good heat resistance and fatigue resistance. It applies a certain pressing force through the closing and closing of the upper and lower dies, so that the forgings have better structure and mechanical properties.
The investment casting process is to use a fusible material to make a fusible model, apply several layers of special refractory coatings on it, dry and harden to form an integral shell, and then use steam or hot water to melt from the shell.
Isotopes are different nuclides of the same element. Their nuclides have the same number of protons but different numbers of neutrons. In nature, naturally occurring isotopes are called natural isotopes, and synthetic isotopes are called artificial isotopes.