Reducing Surface Hot Shortness of Copper-Bearing Steels

Details

• Personal Author:
  Copeland, Mark I. ; Kelley, John E.
• Description:
  A study was conducted to determine if commonly used alloying additions or coating materials can prevent the formation of a liquid- copper phase during the reheating of copper-containing steels. If so, the tendency of such steels to surface crack during hot working might be eliminated. Steel specimens were scaled by heating them either isothermally or in a programed manner that simulated industrial furnace practice. Metallographic examination of the heated specimens showed that molten fayalite (fe2sio4) completely prevented the formation of liquid copper at the surface. Fayalite, which melts at 2,200 deg f (1,205 deg c), was formed by internal oxidation of the silicon contained in the steel. By forming complex molten oxides, coatings of borax glass were also effective in preventing the occurrence of liquid copper at the steel surface. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-19
• NIOSHTIC Number:
  nn:10008939
• NTIS Accession Number:
  PB-212660
• Citation:
  NTIS: PB 212 660 :19 pages
• Federal Fiscal Year:
  1972
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 212 660
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d221b989b82de01f5320da7b8980442b00af5120bf6a127cd2668b0c8b89ee187ddb4d4e7dcb11decee1cd44d247ba810a78965ec1d570afae68fc6c99b2f9b4
• Download URL:
  https://stacks.cdc.gov/view/cdc/237460/cdc_237460_DS1.pdf
• File Type:
  [PDF - 9.79 MB ]