2014年3月13日星期四

Titanium medical grade titanium plate

At this stage, the majority of aviation engine parts using  Xinnuo medical grade titanium alloy, according to the assembly requirements , dimensional accuracy and surface finish surface roughness are required in order to ensure the quality of the grinding surface of the part . Because of their physical and mechanical properties of titanium alloys , surface grinding process prone to burn, reduce surface integrity , is urgently needed to address the problem of grinding titanium alloy , so choosing the right wheel is very necessary. When using silicon carbide,  titanium and titanium alloys  oxide grinding wheel , abrasive dust easily attached to the wheel surface , a large grinding force , wheel wear serious, leading to the workpiece surface quality. Linear relationship between force and grinding depth chip deformation due to the existence of size effect , starting from the basic principles of fracture mechanics , in fact, the grinding process is the process of crack propagation . Size effect is mainly caused by the grinding force of the  titanium alloy sheet  force . The relationship between the metal removal rate and the normal grinding force , in fact, and not just depend on the workpiece material and grinding wheel dressing , because there are also size effect . In addition to metal mill grinding depth than a great impact, which is due to the role of the size effect . Workpiece speed impact is much smaller , so that the normal force with the addition of metal grinding ratio is nonlinear .

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