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Details

PB236269

Publication Date	1974
Personal Author	Copeland, M. I.
Page Count	26
Abstract	A study was conducted to determine the effect of steel reheating practices in burning natural gas on the amount of silicon required to prevent the formation of copper on steels containing up to 1 wt-pct Cu. Formation of copper, which causes surface hot shortness, was readily prevented by as little as 0.3 wt-pct Si and by 2 vol-pct excess oxygen in the furnace atmosphere when reheating steel containing up to 0.8 wt-pct Cu. The Bureau of Mines sponsored this research effort to improve the recycling capability of copper-containing scrap steels by eliminating the major drawback to their use, the formation of surface cracks during hot working. (Modified author abstract)
Keywords	Steels Reclamation Reheating Copper Silicon Scaling Surface defects Metal scrap Brittleness Waste recycling
Source Agency	Bureau of Mines
NTIS Subject Category	68C - Solid Wastes Pollution & Control 71J - Iron & Iron Alloys
Corporate Authors	Bureau Of Mines, Albany, Oreg. Albany Metallurgy Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197425

Reducing Surface Hot Shortness of Copper-Containing Steels Using Silicon Additions and Controlled Rehaeating Conditions.

Reducing Surface Hot Shortness of Copper-Containing Steels Using Silicon Additions and Controlled Rehaeating Conditions.
PB236269

Publication Date	1974
Personal Author	Copeland, M. I.
Page Count	26
Abstract	A study was conducted to determine the effect of steel reheating practices in burning natural gas on the amount of silicon required to prevent the formation of copper on steels containing up to 1 wt-pct Cu. Formation of copper, which causes surface hot shortness, was readily prevented by as little as 0.3 wt-pct Si and by 2 vol-pct excess oxygen in the furnace atmosphere when reheating steel containing up to 0.8 wt-pct Cu. The Bureau of Mines sponsored this research effort to improve the recycling capability of copper-containing scrap steels by eliminating the major drawback to their use, the formation of surface cracks during hot working. (Modified author abstract)
Keywords	Steels Reclamation Reheating Copper Silicon Scaling Surface defects Metal scrap Brittleness Waste recycling
Source Agency	Bureau of Mines
NTIS Subject Category	68C - Solid Wastes Pollution & Control 71J - Iron & Iron Alloys
Corporate Authors	Bureau Of Mines, Albany, Oreg. Albany Metallurgy Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197425