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

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Presentation on theme: "125 November 2013 Holger Witte Brookhaven National Laboratory Advanced Accelerator Group Steel Procurement."— Presentation transcript:

1 125 November 2013 Holger Witte Brookhaven National Laboratory Advanced Accelerator Group Steel Procurement

2 225 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?

3 325 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.

4 425 November 2013 Hardness

5 525 November 2013 FEA Simulation Efficient simulation of oxygen cutting using a composite heat source model. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.10.011

6 625 November 2013 Flame cutting

7 725 November 2013 Finite Element Simulation k, c p : constant Q: 6.44 x 10 9 W/m 3 v: 3 mm/s Worst case?

8 825 November 2013 Temperature Profile

9 925 November 2013 Flame-cutting –Can affect magnetic properties –If carried out correctly: limited effect? –Annealing? Monitoring PRY –fiducial markers? Summary


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