19-10-2012, 04:48 PM
Ciemat Mechanical Workshop and test of the Stainless steel plate machining for the CALICE-HCAL.
Ciemat Mechanical Workshop.ppt (Size: 4.12 MB / Downloads: 37)
Ciemat mechanical workshop.
Milling Machines:
CNC machine of aprox 4x1 m2 working table. Accuracy of aprox 0.03 mm/m, with temperature compensation.
This is the machine that can be used to produce the plates for the HCAL prototype.
CNC machines of aprox. 0.7x0.4 m2 working table. Accuracy of aprox 0.02 mm, with temperature compensation.
Test on a plate of 1510x810x25 mm3
To study the capacity and posibilities of the Ciemat workshop to produce the prototype:
We was machining a plate of AISI 304 L, to obtain the following plate:
To verify the planarity of the plate we was used a comparator on the CNC machine. And to verify the CNC machine we will use interferometer measurements (not yet finished). The final planarity of the plate will be measure by the interferometer, if this is considered necessary.
Results:
We obtain a planarity of aprox. 0.6-0-7 mm, mainly due to the internal stress of the material. Because we do not take care to use thermal stabilized plate. The rest of the test was stoped. We need to buy this material type, and also start of pre-calibrated plates.
To do this test we take aprox 3-4 ‘Ciemat’s working days’.The plate weigh aprox 190 kg. This mean that it is necessary lot of time during the several manipulation and positioning operations to produce the piece.