A Brief Introduction To The Process Technology Of Cold Heading Screws
Cold heading technology is one of the new processes of cutting-free metal pressure machining. It is a processing method that makes use of the plastic deformation of the metal under the action of an external force, and with the help of a die shell, the volume of the metal is redistributed and transferred, thus producing the desired part or blank.
The majority of dowels used in many industries today are cold headed screws. It is likely that you are not familiar with cold heading screws, so let me tell you about them!
The dowel is cut to the appropriate length, a suitable die is selected according to the engineering drawings and the cable is pressed and squeezed by the cold heading machine to produce the plastic deformation required by the engineering drawings. There are many materials that can be used for cold heading, such as carbon steel, stainless steel and brass. The cold heading process is usually used in large quantities, as it is very fast and reduces material consumption.
The majority of cold heading machines are multi-tapping machines, as they can be used to process cables step-by-step from stabilisation, top of head forming, chamfering and tooth rolling in a sequential order. Like the more common dowels we usually use, with cold heading to produce processing, every minute can do three hundred - four hundred, work efficiency is already considered very high. Certain hexagonal screws, hexagonal screws and cross-shaped cavities are usually produced in this way, except that some other work has to be done before cold heading.
The process of cold heading nuts and cold heading screws is the same. The quality of a dowel is not only determined by the cold pier forming process, but also by the heat treatment of the finished product. The heat treatment process is carried out according to the different materials of the dowel. In simple terms, it starts with high-temperature quenching, followed by medium-temperature heating and then a low-temperature carburising treatment.