Factor heat into your measurements

Article Abstract:

Temperature variations are the leading cause of dimensional-measurement errors on the shop floor. There are several sources of temperature fluctuations and steps should be taken to manage these fluctuations to achieve truly accurate measurements. The most important step is to make measurements at a reference temperature. Manufacturers can refer to ASME B89.6.2. to make the appropriate corrections to dimensional measurements made when there are temperature variations. Calculations can be made using the NDE, which corrects for nominal differential expansion.

Methods, Management, Manufacturing industry, Manufacturing industries, Shop floor control, Temperature control

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Quality readers critique SPC program

Article Abstract:

Readers critiquing SQCpack, a statistical process control software package by PQ Systems Inc. of Miamisburg, OH, found it to be easy to use as well as useful in their jobs. Many also said it greatly contributes to efficiency and strongly recommend it to others. Among satisfied SQCpack users who offered their opinions via Quality magazine's Web site, Quality Online, are Charles Johnson, quality assurance manager at Great Northern Tool & Die Inc. and Lee Anderson, VP for Partners for Change Inc. of Owatonna, MN.

Prepackaged software, Software Publishers, Business Software Pkgs (Micro), Evaluation, Software, Product/Service Evaluation, Business management software, Suites (Software), Surveys, Statistical process control, Quality (Periodical), SQCpack (Statistical/mathematical software)

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Prepare to meet a new hardness standard

Article Abstract:

The National Institute of Standards and Technology will release a new standard for the Rockwell C hardness scale by the end of 1996. The standard provides new standard reference materials for three different hardness levels to cover the entire C scale. Most industry members expect the standard to stabilize industry. Slight differences in hardness values between the US and other countries will remain despite the implementation of the standard, albeit much smaller.

Standards, United States. National Institute of Standards and Technology, Hardness, Hardness (Materials)

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