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CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM 1 Electropolishing of W irises. SEM images. 1) Manufacturing ways. 2) CERN Workshop iris images. 3) Flueckiger.

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Presentation on theme: "CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM 1 Electropolishing of W irises. SEM images. 1) Manufacturing ways. 2) CERN Workshop iris images. 3) Flueckiger."— Presentation transcript:

1 CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM 1 Electropolishing of W irises. SEM images. 1) Manufacturing ways. 2) CERN Workshop iris images. 3) Flueckiger iris images. 4) Plansee iris images. 5) Conclusions.

2 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM2 Manufacturing ways. Sintered + Hot forged W Ø36mm rod, 99.96% purity Sintered + Hot forged W EDM EDM: Electrical Discharge Machining = Electro-erosion EP: Electropolishing EP test: - 6 µm - 7 µm Abrasive Blasting EDM Abrasive Blasting? EDM Cylindrical Grinding EP CERN Workshop FlueckigerPlansee Delivery 2 iris for delivery : µm & µm EP test: - 8 µm - 9 µm - 27 µm

3 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM3 CERN workshop Before Electropolishing (1/2) Edge Edge Stains Stains Flakes Flakes Blasting incrustation Blasting incrustation 400µm 50x

4 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM4 CERN Workshop Before Electropolishing (2/2) 20µm 100µm 1000x 200x

5 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM5 CERN Workshop After Electropolishing (1/2) - 8µm + - 9µm - 8µm + - 9µm Intergranular cracks Intergranular cracks Pores Pores 400µm 50x

6 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM6 CERN Workshop After Electropolishing (2/2) 20µm 100µm 1000x 200x

7 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM7 Flueckiger Before Electropolishing (1/2) Edge Edge 400µm 50x

8 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM8 Flueckiger Before Electropolishing (2/2) 20µm 100µm 1000x 200x

9 CLIC Meeting 21/08/2001G. Arnau Izquierdo EST/SM9 Flueckiger After Electropolishing (1/2) - 6µm + - 7µm - 6µm + - 7µm Intergranular cracks Intergranular cracks Pores Pores 400µm 50x


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