We do valve retainer body. During machining we are able to achieve process capability morethan 1.67. But after Case hardeneing some of the dimensions like taper bore distance, wall thickenss are not meeting Cp 1.67. After heat treament no machining is done. We are analysing the issue and hopefully we can able to bring in control.
In the mean time we informed our customer regarding this and told them that we will do 100% inspection and send the parts that meets the specification. But customer is asking the lot only with in 1.67. For this we may have to reject lot of parts even if it is with in the specificaiton. Only because we could'nt achieve 1.67 we do 100% inspection, in this condition is it right to demend for cp level. pl. suggest how to go about in this situation.
In the mean time we informed our customer regarding this and told them that we will do 100% inspection and send the parts that meets the specification. But customer is asking the lot only with in 1.67. For this we may have to reject lot of parts even if it is with in the specificaiton. Only because we could'nt achieve 1.67 we do 100% inspection, in this condition is it right to demend for cp level. pl. suggest how to go about in this situation.