Explanation
It is a dental alloy suitable for forming with gift, pressing, punching, rolling, stretching, hammering and other machines plus 3: method. Forged alloy produces plastic deformation through the forging process and becomes the required finished products, semi-finished products or raw materials for further processing. After forging, the internal structure and properties of alloy will change. If strain hardening occurs, the hardness, elasticity, strength and magnetism of materials will increase, and the ductility and corrosion resistance will decrease. For alloy that need heat treatment to rearrange the atoms and recrystallization can be recovery, different heat treatment processes can be selected according to the requirements of materials composition, property and application. The heat treatment methods mainly include bating heat treatment, hardening heat treatment and stress relief. Forged alloy is the first metallic materials used in stomatology, mainly including 18-8 chromium nickel stainless steel, cobalt chromium alloy, nickel chromium alloy, gold alloy, titanium alloy and other products, mainly including alloy wire (clasp, orthodontic arch wire, ligation wire, etc.), rod (tongue rod, palate rod, etc.), piece (stainless steel molding piece, nickel chromium alloy piece, etc.) and crown sleeve. When making hammered crowns in clinic, heat treatment must be carried out due to strain hardening.
Classification
Biomedical materials -> Dental materials