Mar 26 2019

The Quality

Posted by domain admin in News

The minority of products, processes, or causing the quality characteristics of the bulk of waste or rework costs. The minority of rejections that represents the majority of customer complaints. The minority of sellers who is linked to the majority of rejected parts. The minority of the bulk of the delay in a process that cause problems. The minority of products that represent the majority of earnings. The minority of elements representing the greater part of the cost of an inventory etc. Example of application of the Pareto diagram: see the layout of the Pareto chart in a practical application: A manufacturer of plastic accessories you want to scan are most frequent defects that appear in the units out of the production line. For this purpose, began by classifying all possible defects in its various types: type of defect detail the problem bad color color does not conform to what is required by the customer Outside measurement greater than the supported Ovalization bad termination occurrence of burrs break attachment breaks during installation accessory imbalance requires additional counterweights crushing accessory is crushed during installation incomplete lack any of the metallic inserts bad level of other other not acceptable warp warp defects later, an inspector checks each accessory as it leaves production registering their defects according to these types.

The third column shows the number of accessories that presented every type of defect, i.e., the frequency with which each defect appears. Instead of the numerical frequency we can use the percentage frequency, i.e. the percentage of accessories in every type of defect, which is indicated in the fourth colummna. In the last column we accumulate the percentages to make more obvious defects that appear most frequently have ordered the table in descending order of frequency data. We see that category others must always go to the end, regardless of its value. Thus, if it had a higher value, it should just have been located in the last row original author and source of the article.

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