Electroplating of electronic screws should not be rigid to affect the quality of screw products;
First, it is difficult to meet the quality requirements of electroplating with different screws under conventional electroplating conditions.
Second, the specifications of hardware screws are too close, the size and length seem to be similar. Large hex bolts and outer hex bolts are notched, so they are plated separately. Otherwise it will be difficult to split the screen when the plating is good.
Third, the heavier screws and lighter screws, smaller screws and larger screws are plated separately. Otherwise, the two may meet in the plating process, resulting in screw damage.
Fourth, screws are easy to screw. Two kinds of cards stuck together should be plated separately. Otherwise, two different types of screws and nails stick together during electroplating and become a ball. Electroplating fails. Even after electroplating, it is difficult to distinguish between these two types of screws.
Thread cutting: generally refers to the method of processing thread on the workpiece with forming tools or abrasive tools, including turning, milling, tapping, tapping, grinding, grinding, cyclone cutting, etc. When turning, milling, and grinding threads, the transmission chain of the machine ensures that the turning tool, milling cutter, or grinding wheel moves one lead accurately and evenly along the workpiece’s axis each time the workpiece is turned. In tapping or tapping, the tool (tap or die) rotates relative to the workpiece, and the tool (or workpiece) is guided by a pre-formed thread slot for axial motion.
Thread rolling: Process in which threads are produced by plastic deformation of the workpiece by forming a rolling die, also known as cold heading. The machines used in this production mode are generally single – mode machines, multi – station machines, clamping machines, etc. The screws produced by this method are faster and cheaper to produce, but the screw heads produced by this process are better compared to the cutting process.
Each approach has its advantages. Although the cutting speed is not as fast as cold heading, the accuracy is higher than cold heading, and cold heading can produce more, faster and cheaper in quantity and speed. Especially in the precision of small screws, cold heading is more cost-effective than turning.
Post time: Feb-15-2023