Basic manufacturing processes of screw
Coarse line→ Wire →Heading →Thread rolling → Heat treatment → Plating (color) → Packing
Brief introduction of processes and machines needed:
(1). Pull the coarse line to the line patch needed. (Wire drawing machine)
(2). Adjust, produce, and form the head of the screw on the heading machine. (Screw heading machine)
(3).Grind tooth on the coil thread rolling machine, and form the screw completely (Thread rolling machine)
(4). Treat the semi-finished screw in the heat treatment according to the standard (Heat treatment furnace)
(5). According to the requirements, process plating, etc. (Zinc plating machine)
(6). Packing and out of the factory
