Generally, it is used when the process is under stable & statically control. ![]() In both cases, we would like to verify whether the process can meet the customer requirements or not. ![]() FAQ: What is the difference between Cp & Cpk?Īns.: Cp & CpK are termed as process capability and process capability index. downloading links are provided at top of this Article. Note: Download the Cp & Cpk excel template or format and deploy it in manufacturing process. Standard Deviation = Average of Range / d2 = 4.23Ĭp = (USL-LSL)/6*Standard Deviation = 1.2ĬPU = ((USL-Average of Mean)/3 x Standard Deviation) = 0.872ĬPL = ((Average of Mean-LSL)/3 x Standard Deviation) = 1.489ĬpK = 0.872(minimum of CPU or CPL). Laddle Temperature Specification= 600 ± 15☌ The process engineer has collected the 100 nos laddle temperature reading and the same is mentioned in the below table. ![]() Process Capability Analysis with Manufacturing Example ![]() (20 times X 5-readings at a time).Īfter doing the Process Capability Analysis on Scratch hardness readings, we got the below result value: Characteristics: Scratch Hardness In the above two tables (Table-1 &2), we have taken the 100 reading i.e. Scratch hardness readings Table: Table-1 Sl.No.
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