Fixture for Forming Evaporative Pattern (EPC) Process Patterns

Details

• Personal Author:
  Hansen, Jeffrey S. ; Jordan RR ; Turner, P. C.
• Description:
  A method of casting metal using evaporative pattern casting process patterns in combination with a fixture for creating and maintaining a desired configuration in flexible patterns. A pattern is constructed and gently bent to the curvature of a suitable fixture. String or thin wire, which burns off during casting, is used to tie the pattern to the fixture. The fixture with pattern is dipped in a commercially available refractory wash to prevent metal adherence and sticking to the fixture. When the refractory wash is dry, the fixture and pattern are placed in a flask, and sand is added and compacted by vibration. The pattern remains in position, restrained by the fixture. Metal that is poured directly into the pattern replaces the pattern exactly but does not contact or weld to the fixture due to the protective refractory layer. When solid, the casting is easily separated from the fixture. The fixture can be cleaned for reuse in conventional casting cleaning equipment. [Description provided by NIOSH]
• Subjects:
  Metals Metal Workers Mining Occupational Health Safety
• Keywords:
  Foundries Metallurgical-processes Metallurgy Metalworking Mining-industry
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Other
• Place as Subject:
  Oregon ; OSHA Region 10
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-9
• NIOSHTIC Number:
  nn:10005277
• Citation:
  US Pat 5,265,664 1993 Nov; :1-9
• Federal Fiscal Year:
  1994
• Peer Reviewed:
  False
• Source Full Name:
  United States Patent 5,265,664
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5d61cec30c5f2320d94f87bd18bb41e17495c2638b057508b5a0c3ec48183d324e908da8b77f252c81cb3c178d0c526e3112c601299c2c9037a2188f0aec588f
• Download URL:
  https://stacks.cdc.gov/view/cdc/219657/cdc_219657_DS1.pdf
• File Type:
  [PDF - 125.82 KB ]