How to ensure PCB delivery time?
Short delivery in PCB industry, requires production management control the entire PCB manufacturing process from orders to complete, which requires ERP system to provide production scheduling and product management, in order to ensure PCB delivery and customer response speed.Therefore, the PCB manufacturing's most critical competitive advantage lies in: Engineering research and development, production management, material control, manufacturing, outsourcing processing, and so on, especially in the field of WIP (in products) control.
If the WIP control is improper, there will be a lot of mixed board, lost, stagnant spinning, WIP quantity is not allowed, the replenishment delay, the number of line change increased, delivery time is unclear, and so on the phenomenon of mismanagement.
There is a variety of PCB products in PCB industry, generally based on the layers can be divided into, single-sided PCB, double sided PCB, four-layer PCB eight-layer PCB, 10-layer PCB. PCB products processing materials, process, process parameters, detection methods, quality requirements, etc., will be produced by the production of Instructions (MI), issuing processing instructions to production department and the outsourcing unit.
For the production management of the PCB manufacturing industry, belong to the process flow type of manufacturing, so will use small scheduling (Run card scheduling) management technology. Therefore, in the scheduling process must pay attention to the following PCB production flow characteristics
PCB manufacturing is a representative of the flow processing, different from the mechanical assembly processing mode, it is mainly from a raw material input, and then accessory material input, processing technology around the main raw materials for processing. And due to the emergence of multi-layer board technology, PCB industry reflow production (that is, repeated one or a section of processing) is more and more.
How much raw material is required to process a certain amount of finished PCB, convert the number of sheets into small panel, so that to calculate the number of raw materials inputs. However, when there is scrape situation, combined with the proportion of the father-son work orders, sometimes lead to the increase in the workload of PCB factory and process is not smooth and incoherent.
Single piece Scrap
When a defect occurs in the process before the lamination, resulting in poor quality of a single panel A or B, it is not possible for a production person to simply litter the big panel, but to continue to use the material, while need to record a single scrap quantity against the single big panel.
Finally, the PCB industry is a OEM industry, product design changes are very frequent, often change the version. Once the customer changes the version, PCB manufacturing instructions and process cards will also be changed, There may even be partial changes, some of which will not change.
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