Tuesday, March 15, 2016
Week 3
Last week I was given the task of the measuring parts again. This time I used the laser micrometer for the outer dimensions of the seal, the micrometer was programmed to scan specific portion of the seal and determine whether the seal had the acceptable measurements. We measured and recorded the data through blind testing to avoid operator bias and inserted the measurements of each seal into Minitab to examine patterns and find the mean of the data. I was taught to use gauge pins to measure the diameter of the hole in the center of the seal, different pins with different diameter in thickness are inserted into the hole to find the pin with the best fit.
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Hi Liwen! I was wondering what the data from measuring looked like this time. Were there any correlations or was it just random like before? You also mentioned in a previous post that if the batteries have any sort of defect, even cosmetic, the whole batch is rejected. What does the facility do with these batteries?
ReplyDeleteWe gave the results to Andy, our on-site adviser, and had to leave right after so we did get to see the finalized analysis. The facility don't actually make the batteries, they make plastic seals that are put into the batteries for safety. The Micotech produces these seals and send them to other factories where the actual batteries are assembled. The Quality Control department takes samples from each shipment beforehand and checks for defects. If a certain defect is found, they would examine the individual batched in the shipment for that defect and if the amount of seals that show defects is statistically significant the shipment would be recycled (Most parts are recyclable), they melt them down and reuse the material.
DeleteHi Liwen!
ReplyDeleteYour writing is great! Do you have any new updates on what you're working on?