The Production Process Of Screws
A screw is a device that tightens object parts from shallow to deep when screwed with the help of the physics and mathematics of beveled circular rotation and sliding friction of the object. Screws are the usual name for fasteners, the usual verbal term. That screw manufacturers are how the production and processing of it, we continue to look down together; it.
Screw production process.
1. the wire heated to a suitable temperature, maintain the corresponding time, and then slowly dissipate heat to adjust the crystalline organization, reduce the hardness and improve the processing of processing wire at room temperature.2. Remove the oxide film on the surface of the wire and then produce a phosphate film on the surface of the metal to reduce the scratching of the die-casting die during the production process of wire drawing and its cold pier or forming.
3. Cold drawing of the coils to the required wire diameter. For certain products there are two stages: rough drawing (shelling) and fine drawing.
4. The wire is cold-calcined (or hot-calcined) to achieve the shape and size (or thickness) of the semi-product.
5. Heating: The heating equipment is used to heat up the end of the billet to a white hot state, setting the heating temperature and time according to the product parameters. Usually 7-10 seconds for 3/4 or less, 15 seconds for 7/8-1".
6. Forming: The heated blank is quickly moved to the forming machine, where it is formed by using the back seat, the clamping die is tightened and the head die hits the blank. The spacing of the back seat can be adjusted according to the size of the blank.
7. Bunching: The product is shrunk on the bunching machine by means of a press.