Precision screws are used for mobile phones, watches, Bluetooth earphones, cameras and other miniature products.In order to ensure the life and appearance of the screws can be used for a longer time, precision screws play a important role in the small details, so we should choose high-quality and high precision screws , precision screw manufacturers will tell you how to check the quality of precision screws:
First, we need to check and test the screw wire, because the raw material wire is directly related to the quality of precision screw . Better quality screws usually do not appear burst screw head, bad thread and so on;
Second, the engineer need check the forming process of the screw head.In the process of screw forming, first the engineer need to check the screw mould has the better forming capacity, can produce better quality screws. Then check the screw machine in the production, which is conducive to stable production. It is best to check the appearance of the molding screw, whether there are burrs, and check the size of the screw length, to see whether these sizes meet the standard or the specific requirements of the customer.
Finally, electroplating screw color detection and salt spray test detection. Check the color of electroplated screws, the smoothness of screw surface, salt spray test to check the rust time of screws or how many hours salt spray screws will rust, to meet the customer's salt spray test requirements.
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