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Valve plate lapping case study


Case reference: Apple, USA


Piano Presitel, Mumbai, India


Material: Iron

Technological process

YUHUAN lapping solution
Roughness:Ra 0.2
Flatness:0.002 mm
Parallelism:0.002 mm
Grinding allowance:more than 100 um
Grinding efficiency:40-50 um /min
Thickness consistency:2 um 


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