1. The reason why the base material is defective is visible on the bottom plate: scratches are caused during the transportation process, resulting in gaps in the circuit. The defects will affect the product routing. Therefore, it is necessary to strengthen control, standardize the operation, and reduce scratches as much as possible.
2. White spots appear due to poor base material: The plate is subjected to the impact of inappropriate mechanical external forces. For example, the cutting blade needs to be ground after a certain period of time. However, the material that has not been ground will have cracks and cracks, which will appear after etching. White spots will affect the appearance and electrical connections.
3. The cutting size is too small: Before cutting, you must verify the size requirements on the process card, calculate how many small pieces can be cut from one large piece of material, and reasonably allocate the maximum utilization rate of the plate to reduce waste of materials. For example, the cutting size is too small The use of a series of tools in small post-processes will be limited, which will affect the production progress, delay delivery, and some boards will be scrapped; the size deviation will have an impact on the layout of the post-process boards. Therefore, in the cutting section, dimensional data is extremely important and must be Carefully check the dimensions on the process card, adjust the cutting machine as required before cutting, and start according to the operating instructions.10Zhang material or20After opening the large material, stop the machine to check whether there are any differences in the size of the material, deviation, scratches, scratches and other problems. After confirming that there are no errors, restart the machine.