At present, there are many materials used in cold heading machines, and the longest used materials are divided into two categories: ferrous metals and non-ferrous metals.
Cold heading machine materials include ferrous metals, mainly including steel, carbon and some other materials. From the perspective of technology, there are several classification methods for the use of steel.
According to the quality of steel, it is divided into ordinary carbon steel, high-quality carbon structural steel, special cold heading machine steel, and alloy steel; According to the composition of steel, it is divided into low carbon steel, medium carbon steel, high carbon steel and special steel; According to the smelting method of steel, it is divided into boiling steel and calming steel.
Non-ferrous metal materials for cold heading machine: aluminum, copper and its alloys and other materials. The grades of pure copper commonly used in China are T1, T2, etc., which are mostly used for upsetting rivets, contact screws and other electrical parts. Commonly used copper alloys include zinc brass H62, tin brass HSn62-1, lead brass HPb63-3, etc., with a hardness of 40-65Hv0.2 or 60-85 Hv0.2 for wear-resistant and corrosion-resistant fasteners, upsetting rivets, machine screws, nuts and other fasteners with special properties.
