The machinability of S, S-Ca, S-RE, and S-RE-Ca system resulfurized composite free-cutting steels were investigated, where RE is rare earths, mostly cerium. The experimental results showed that in the low cutting speed range (_<35 m/min), the S-RE system free-cutting steel had better machinability than the others and that the S-RE-Ca system free-cutting steel exhibited the best machinability at high cutting speeds. A protective layer capable of preventing diffusion wear was formed on the rake face ofa P30 tool when S-RE-Ca system free-cutting steel was machined in the cutting speed range of 120 to 160 m/min.
The multineutral plane phenomenon of foldable panel can obviously reduce the strain of the active-matrix organic light-emitting diode (AMOLED) panel after being bent, but it also complicates the optimization of the panel structure.Considering the force balance at the axis of symmetry after the panel was folded, this paper established the basic theory of AMOLED panel structure optimization, which indicated the direction of structure optimization of the panel. Then, the theory was validated by numerical simulation. It can be used to guide the structural design of the foldable panel.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.