The production process of fasteners involves multiple steps and requires specialized manufacturing equipment. Below are the main machines used for fastener manufacturing:
device name | main application | explain |
cold header | Form the wire into a blank through cold extrusion. | With high production efficiency and optimal material utilization, this equipment serves as the core facility for fastener forming. |
thread rolling machine | Process thread | The thread is formed through rolling with a wire rolling plate, resulting in excellent surface quality. |
Drilling machine | Process the internal thread of the nut | For nuts or parts requiring internal threads |
lathe/CNC lathe | precision finishing | For the machining of high-precision, small-batch, or custom-made fasteners |
heat-treating facility | Increase intensity | Systems such as mesh belt furnaces and quenching-and-tempering production lines are used to enhance the hardness and tensile strength of fasteners. |
Surface treatment equipment | Rust-proof coating | Such as electroplating lines, Dacromet coating equipment, and blackening treatment equipment |
Screening/Detection Equipment | quality control | Optical sorting machine, hardness tester, thread pass/fail gauge testing equipment |
In addition, there are auxiliary equipment such as wire drawing machines (used to reduce coarse wire to the required diameter) and annealing furnaces (used to soften wire for cold heading).
Summary: A complete fastener production line typically includes the following processes: wire drawing → cold heading forming → thread rolling/tapping → heat treatment → surface treatment → inspection and sorting.