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  • Users: JosephERG
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  1. JosephERG

    How to determine "statistically valid" sampling plans

    Hi everyone, Good day!!!! Just want to ask if you could provide me some procedures on how to determine sampling plans. As of now, we perform sampling inspection in our production line but we have no basis whether or not the chosen sampling plan is statistically valid. We just choose...
  2. JosephERG

    Measuring Quality Performance of a Jobshop production

    Hi Everyone, Good Day!!! I would like to ask advise from you guys (especially from the "jobshop people") regarding the best method for measuring quality performance of a jobshop production. As of now, we are using the yield, %rejects, abnormal lots, and returned lots as our metrics for...
  3. JosephERG

    Yield Monitoring

    Hi All, Good day!!!!! I would like to inquire, especially for those in a job-shop business, if you can share some tips on how to monitor process yields. In our company, process yields are determined by getting the average yield for each process (of a particular product type), within a 6-month...
  4. JosephERG

    How to determine target yields

    Hi All, I would like to inquire if any of you guys, especially those in the fabrication business, can provide information on how to determine the "target yield". In our company, QC engineers are required to set the target yield for each process involved in the manufacture of our products...
  5. JosephERG

    production planning & control for fabrication business

    Good Day!!! I would like to seek advise about the best production planning and control system for a fabrication type of production. Currently, our company is using the "process yield" as basis for production planning. I think that this approach is more applicable for mass production type of...
  6. JosephERG

    Improvement of assembly method for push-up pins

    Hi guys!!!!! Is there anyone of you guys who happens to have an experience on assembling push-up pins? Push-up pins, by the way, is a tool used to remove chips (in an upward direction) from the wafer before it is wire-bonded. This tool is very common in the semi-conductor industry and our...
  7. JosephERG

    corrective actions for non-conforming products

    Hi All!!! I would just like to ask who formulates the corrective action/s for every non-conforming products that are transferred to QC? As a rule, we all know that the production group has to ensure that all devices transferred to QC must have no "rejects" that is why they perform 100%...
  8. JosephERG

    maintenance/calibration of thread gauges

    Hi All, Recently, we have received complaints from our customer that the thread condition of our dispensing tools are NO GOOD. Meaning, it doesn't fit into their standard thread gauge when inserted. FYI, my company and our customer uses the same inspection tool (the same brand as well). Just a...
  9. JosephERG

    About surface roughness

    Hi All, Do anyone of you guys know how to improve the surface quality (roughness) of inside surfaces specifically for stainless steel tubes with inside diameters as small as 0.41 to 0.55 mm? Our team is currently developing a dispensing tool that has low friction properties. Therefore...

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