For the inspection of screw head forming, in the process of screw forming, the mold of the production screw is first inspected. Only a good mold can make a good screw product. It is the machine inspection of the screw production, which is conducive to safe and smooth production. The appearance of the formed screw is inspected to see if there is any burr, and the size and length of the formed screw are tested. See if these size lengths meet the national standard or the specific requirements of customers.
The next is the detection of screw teeth. Of course, the first thing to do when screwing your teeth is the dental plate. All teeth from a good dental plate can pass the stop. Pass the rules, stop the rules. There is also the detection of thread pitch of teeth. It also needs to meet the national standard of screws or customer requirements.
Finally, the color detection and salt spray test of the electroplated screws are performed. Look at the color of the screws after plating. How smooth is the surface of the screw. The salt spray test detects the rust time of the screw or how many hours the salt spray screw will rust. After that, we inspected the screw shipment. The method is to select unqualified screws. Give the best quality screws to customers. Ensure the quality of screws.