My company is using the following sampling table based on Nicholas Sequigla's Zero Acceptance Number Sampling Plan:
http://guidebook.dcma.mil/226/tools_links_file/stat-sample.htm
My question is where do the sampling size numbers in the table come from? What statistics equation/formula is used to arrive at these sampling size numbers? How is this statistics formula used to get these numbers?
Greetings everyone,
I have a question about the pitting of the electroless nickel plating on our parts. At first, we thought it was the porosity of the aluminum (6061-T6), but after looking at the mil spec for this type of plating, and some other internet seaching, it seems as though the plating process itself is suspect to be the cause of the pitting. Has anyone else had experience with this issue? We're trying to nail down the root cause of the pitting, so any insight will be appreciated, thanks!
Our process:
Variation is the bane of quality. Variation in materials, process, human perception and applied effort . . . all can create quality problems.
We engineered a system to eliminate practically all variation in process and human factors and to even compensate for the variation in materials. It may well be a good parable for others wanting to achieve high levels of process standardiztion in manufacturing environments where naysayers insist "it can't be done."
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ZYD Double Stages vacuum transformer oil purifier-- ZYD transformer oil purifier is particularly suitable for treating high-grade transformer oil, super-voltage transformer oil and new transformer oil. -- ZYD transformer oil purifier can quickly remove water, trace water, gas, particles as well as acetylene, hydrogen, methane and other harmful ingredients from oil effectively to improve oil’s dielectric strength, effectively making sure electric equipments working safely and normally.
Some of the products we machine are made from Macor ceramic. During the machining process, it is quite common to get chips in the material. We have taken great lengths to prevents as much as possible, but when you're running hundreds, there will always be some. I'm just wondering if there is a tolerance that conforms to ISO 14035 regulations or to industry standards for acceptance/rejection.
Purpose:The instrument is designed and made the National Standard GB/T510 “Test Methods for Solidifying Point of Petroleum Products”, GB/T3535 “Test Methods for Pour Point of Petroleum Products”, GB/T6986 “Test Methods for Cloud Point of Petroleum Products”, and the Industry Standard of Petrochemical SH/T0248 “Test Methods for Cold Filter Plugging Point of Distillate Fuels”. It is suitable to determine solidifying point, pour point, cloud point and cold filter plugging point of petroleum products.
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