Roundness of Molded Detonator Heads

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Description

The magnitude of the deviations from roundness of molded detonator heads, caused by the geometry of the part and by different materials, was investigated to provide a scientific basis which can be used to predict dimensions and tolerances of size and roundness for new heads. Injection presses were used to mold detonator heads to precision tolerances. Twenty parts were molded under optimum conditions in two different molds using both DAP filled with long glass fibers and DAP filled with asbestos. Each of the parts was analyzed for size and roundness, and the data were analyzed statistically. The results indicate: 1. ... continued below

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20

Creation Information

Wendeln, D. E. & Waldfogle, E. A. December 12, 1968.

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Description

The magnitude of the deviations from roundness of molded detonator heads, caused by the geometry of the part and by different materials, was investigated to provide a scientific basis which can be used to predict dimensions and tolerances of size and roundness for new heads. Injection presses were used to mold detonator heads to precision tolerances. Twenty parts were molded under optimum conditions in two different molds using both DAP filled with long glass fibers and DAP filled with asbestos. Each of the parts was analyzed for size and roundness, and the data were analyzed statistically. The results indicate: 1. Geometry is highly significant. 2. Material is highly significant. 3. Geometry and material do not interact. 4. Geometry affects magnitude of deviation from roundness. 5. Geometry affects magnitude of shrinkage.

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20

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  • Report No.: MLM-1552
  • Grant Number: AT-33-1-GEN-53
  • Office of Scientific & Technical Information Report Number: 968984
  • Archival Resource Key: ark:/67531/metadc932104

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 12, 1968

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Feb. 17, 2017, 4:02 p.m.

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Wendeln, D. E. & Waldfogle, E. A. Roundness of Molded Detonator Heads, report, December 12, 1968; Miamisburg, Ohio. (digital.library.unt.edu/ark:/67531/metadc932104/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.