Cold Headed Parts
Cold formed parts are metal parts formed using any cold working process. Cold headed parts are a specific type of cold formed metal part; all cold headed parts feature an enlarged section on one end. To create cold headed parts, manufacturers use cold heading, a specialized technique that falls within the broader category of manufacturing known as cold forming .
During both the cold forming and cold head processes, manufacturers form metal products at approximately room temperature.
Applications and Products
Using cold heading production, manufacturers can create a wide range of items. Typically, though, the products manufacturers make using cold heading operations are small items and product components, like fasteners and electrical contacts. Fasteners include bolts (socket bolts, carriage bolts, hex bolts, etc.), rivets (universal rivets, nut rivets), pins (also known as cold headed pins), nail-type fasteners, screw-type fasteners (hexagonal head screws, Phillips-head screws, etc.), and the like. While they can use cold heading to make larger products, manufacturers usually only do so if the products aren’t too complex. Cold forming in general is a less practical manufacturing solution for complex parts.
Products like these are in high demand in many different industries, from aerospace to hardware to injection molding and agriculture.
Process Details
The exact manufacturing methods may vary, but almost all cold forming processes make use of extreme pressure. Extreme pressure is necessary to cause the deformation of the materials. With deformation, cold headed parts manufacturers can shape the right characteristics into the metal.
What actually happens during the application of this pressure is this: First, it goes through plastic deformation. In other words, it changes shape. Second, as a result of plastic deformation, the metal experiences countless microscopic dislocations. This means that, basically, the crystalline structure moves around. As this happens, atomic movement becomes more and more difficult until it is almost impossible. In essence, the metal becomes very hard or strong. The process of the metal hardening after microscopic dislocation is called work hardening.
To start things off, cold heading manufacturers select a material and stock form of metal with which to work. Usually, they work with metals like steel, stainless steel, aluminum, iron, brass, copper, and titanium. Some of the most common stock forms with which they work include wire, plate, or sheet. Once they’ve decided on material and stock shape, manufacturers can start the cold forming/cold heading process.
After they have completed the initial cold heading process, manufacturers have the option of moving onto one or more secondary operations. Some of those operations they may perform include piercing, sizing, trimming, pointing, and/or thread rolling. After that, they can wrap things up with one or more finishing operations, like patching, tapping, milling, shaving, bending, drilling, and/or knurling.
Contact person: Bob Zhang
Company:Shijiazhuang Binpu Metal Products Co., Ltd.
Address:No.351,Youyi North Street,Xinhua District, Shijiazhuang, Hebei
Email: hebmetals@163.com
Tel:86311 87768543
