125 November 2013 Holger Witte Brookhaven National Laboratory Advanced Accelerator Group Steel Procurement.

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Presentation transcript:

125 November 2013 Holger Witte Brookhaven National Laboratory Advanced Accelerator Group Steel Procurement

225 November 2013 Steel Procurement Steel: flame cut Issue: magnetic properties? –Thermal process –FeO Oxy-fuel cutting –Acetylene + oxygen –Bring iron to flame temperature –Add. Oxygen to oxidize Fe –O 2 blows FeO away from cut How much of material is affected by heat?

325 November 2013 Flame Cutting Wood, W.E. Heat-affected Zone Studies of Thermally Cut Structural Steels. Federal Highway Administration and Oregon Graduate Institute of Science and Technology, 1994.

425 November 2013 Hardness

525 November 2013 FEA Simulation Efficient simulation of oxygen cutting using a composite heat source model.

625 November 2013 Flame cutting

725 November 2013 Finite Element Simulation k, c p : constant Q: 6.44 x 10 9 W/m 3 v: 3 mm/s Worst case?

825 November 2013 Temperature Profile

925 November 2013 Flame-cutting –Can affect magnetic properties –If carried out correctly: limited effect? –Annealing? Monitoring PRY –fiducial markers? Summary