Production Machining

NOV 2017

Production Machining - Your access to the precision machining industrial buyer.

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?????? Cleaning Cleaning Protocols :: 41 with all the components to which this standard applies? What about only one type of component? Fasteners, for example, are specified with a variety of different finishes, including electroplatings, conversion coatings and organic/ inorganic coatings. Will one test liquid be compatible with the range of these finishes? Other customer-specific standards require that the test liquid be approved for use. While this requirement may be compatible with that of the industry standard, it begs the question, "How is the test liquid evaluated?" Is there a process for approving test liquids or is there approval without any special consideration? Choosing a compatible test liquid is essential to acquiring accurate data from cleanliness inspections. Inspections performed using an incompatible test liquid may deteriorate the component, resulting in contamination levels that are erroneously high. is could lead to misappropriation of personnel time or other resources that could otherwise solve real contamination problems. is review focused on only three requirements found in ISO 16232 and VDA 19, and evaluated how well some customer-specific standards comply with these industry standards. A brief review of a randomly selected subset For another article on this topic, visit the link below. Measuring Technical Cleanliness According to VDA 19 e aim is to assess and compare the technical cleanli- ness of parts produced by different manufacturers or at different locations. LINK :: suggests that more than 80 percent of the customer-specific standards in the automotive industry today violate at least one of these three requirements. What would this percentage be if all the requirements were considered? So, we come back to the question at hand. Should suppliers use a shop's technical cleanliness inspection procedure? at question cannot be answered directly. However, this information hopefully spurs shops to review the requirements placed on their suppliers and to consider the impact of those requirements. CONTRIBUTOR Ben Lang is supervisor of product development engineering at Acument Global Technologies. Contact him at

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