Used placement machine quality language

SMT quality term 1. An ideal solder joint has good surface wettability, that is, the molten solder should spread on the surface of the metal to be welded, form a complete, average, continuous solder cage cover, its contact angle should be greater than 90. Accurate solder volume, sufficient solder volume but no more less good soldering surface, solder joint surface should be complete, continuous smooth, but does require a very bright appearance. Good solder joint position The deviation of the position of the solder terminal lead on the pad within the specified range. The second-hand placement machine understands the development trend of existing products, products to be produced new products, understands the functions, characteristics, quality requirements, technical difficulties, development of products. This is a factor that needs to be considered when selecting equipment. By knowing the use of the product, the size of the printed board, the characteristics of the board components such as the package type number, the production batch, etc., you can roughly know the type of production line equipment range selected, what are the hub equipment hub parameters. The large size of the printed board used in the product determines the processing capacity of the equipment on the production line. Generally, the equipment is divided into M, XL types. For different types of products, you can choose equipment with different processing ranges to avoid extravagance.

High-reliability products In the production of high-reliability products such as military, aerospace medical, the printed board sizes are usually different in size, the difference is very large, the thickness of the board will vary greatly. There are many types of component packaging forms on the board, various packaging types will be encountered. The second-hand chip mounter is a new type of package that will be continuously updated as the product needs to be designed. The output of such products is usually limited. Therefore, it is required that the device has the ability flexibility to handle different boards. The choice of the placement machine mainly considers the convenience of programming.The placement components must have a certain breadth a certain degree of forward-looking.The selection range of feeder types numbers should be large.In addition to the tape feeder, the tray supply The processing capacity of the feeder should be strong, the tube feeder is essential.

The type of components used in the product, the size of the components, the shape of the components, the density of the mounted components determine the placement accuracy of the placement machine, the number of feeders, the selection of the camera accuracy. At the same time, the buyer must also foresee the components currently in the company's products in the future, whether the second-hand placement machine will be used, that is, the development trend of the components determines that the selected placement machine must be able to mount the components to be used. Only with some forward-looking, can we consider the placement after 3-5 years when selecting the equipment, for example, the placement of small components involves the configuration of feeders nozzles; the placement of POP equipment involves Choice of models brands.