Detailed Explanation of Cold Headed Parts Cold Heading Process Technology

Cold heading is a processing technology that uses a mold to apply pressure to metal at room temperature to achieve plastic forming. It is currently the core forming method for the mass production of Cold Headed Parts. With advantages such as high efficiency and energy saving, high material utilization, and stable forming precision, this process has become the mainstream choice for manufacturing contact components in the electrical industry, widely adaptable to the production needs of various switches, contactors, relays, and other electrical components.

The core principle of cold heading relies on the inherent plastic deformation characteristics of metal. Under external force, the metal blank changes its shape and size, and the formed structure can be stably maintained after the force is released. By applying pressure to the metal blank using a specialized cold heading mold, shaping can be completed without high-temperature heating, perfectly meeting the stringent requirements of contacts for metal microstructure, surface finish, and overall strength. It is an indispensable technological foundation for the mass production of Cold Forming Process Contacts.

The core equipment used in the production of Bimetal Relay Contact Points includes various types of cold heading machines, with common models including single-stage, double-stage, and multi-station cold heading machines. The equipment mainly consists of a machine body, transmission system, feeding mechanism, and mold system. These modules work together to precisely complete the entire process, including wire feeding, positioning, and pressure forming. It can meet the batch processing needs of contacts of different specifications, and is suitable for the production of all types of contacts, from small precision contacts to medium and large-sized contacts.

Spring Electrical Contacts' standard processing flow is clear and standardized. First, wire or rod blanks are prepared, with strict control over material specifications and surface cleanliness to avoid oil stains and oxide scale affecting the conductivity and performance of the contacts. Then, the feeding mechanism precisely feeds the material into the mold cavity, followed by initial upsetting in the mold. Next, a secondary extrusion completes the final shape and size of the contact. After forming, it is cut. Finally, according to usage requirements, subsequent processes such as heat treatment and surface treatment are performed to ensure the mechanical properties and conductivity stability of the contacts.

The application of cold heading technology in the manufacture of Contactor Electrical Silver Contacts has certain limitations. The process demands high plasticity and hardness from raw materials; only metals with excellent plasticity and moderate hardness can be successfully cold-headed. High-hardness materials are prone to cracking defects during processing. Specialized forming molds have complex structures, require high machining precision, and are costly to manufacture. Furthermore, they are prone to wear and tear during long-term production, requiring regular maintenance and replacement. Additionally, due to process limitations, it is more suitable for producing symmetrical, simple, conventional contacts. The difficulty and cost of forming complex, irregularly shaped contacts increase significantly.

We have meticulously crafted our Cold Headed Parts series based on mature cold heading technology. Using high-quality alloy raw materials, these products are precision-formed, ensuring accurate dimensions, stable conductivity, wear resistance, and durability. They are suitable for various electrical equipment, such as contactors, relays, and switches, and support multi-specification customization and bulk supply. We welcome industry customers to consult us for product selection. Custom specifications are available upon request. We look forward to cooperating with you for mutual benefit.