CLIC Meet ing 21/08 /2001 G. Arnau Izquierd o EST/SM 1 Electropolishing Electropolishing of W irises. SEM of W irises. SEM images. images. 1) Manufacturing ways. 2) CERN Workshop iris images. 3) Flueckiger iris images. 4) Plansee iris images. 5) Conclusions.
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.
Mar 28, 2015
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CLIC Meeting 21/08/2001
G. Arnau Izquierdo EST/SM
1
Electropolishing of W Electropolishing of W irises. SEM images.irises. SEM images.
1) Manufacturing ways.
2) CERN Workshop iris images.
3) Flueckiger iris images.
4) Plansee iris images.
5) Conclusions.
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
2
Manufacturing ways.Manufacturing ways.
Sintered + Hot forged W Ø36mm rod, 99.96% purity
Sintered +Hot forged W
EDM
EDM: Electrical Discharge Machining = Electro-erosionEP: Electropolishing
EP test: - 6 µm - 7 µm
Abrasive Blasting
EDM
Abrasive Blasting?
EDM
Cylindrical Grinding
EP
CERNWorkshop Flueckiger Plansee
Delivery2 iris for delivery : - 8.5 µm & - 16.5 µm
EP test: - 8 µm - 9 µm - 27 µm
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
3
CERN workshopCERN workshopBefore Electropolishing (1/2)Before Electropolishing (1/2) EdgeEdge StainsStains FlakesFlakes Blasting incrustation Blasting incrustation
400µm 50x
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
4
CERN WorkshopCERN WorkshopBefore Electropolishing (2/2)Before Electropolishing (2/2)
20µm
100µm
1000x
200x
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
5
CERN WorkshopCERN Workshop
After Electropolishing (1/2)After Electropolishing (1/2) - 8µm + - 9µm- 8µm + - 9µm Intergranular cracksIntergranular cracks PoresPores
400µm 50x
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
6
CERN WorkshopCERN WorkshopAfter Electropolishing (2/2)After Electropolishing (2/2)
20µm
100µm
1000x
200x
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
7
FlueckigerFlueckigerBefore Electropolishing (1/2)Before Electropolishing (1/2) EdgeEdge
400µm 50x
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
8
FlueckigerFlueckigerBefore Electropolishing (2/2)Before Electropolishing (2/2)
20µm
100µm
1000x
200x
CLIC Meeting 21/08/2001 G. Arnau Izquierdo EST/SM
9
FlueckigerFlueckiger
After Electropolishing (1/2)After Electropolishing (1/2) - 6µm + - 7µm- 6µm + - 7µm Intergranular cracksIntergranular cracks PoresPores
400µm 50x
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