Ihe nke EQ491 engine camshaft bụ chromium-molybdenum alloy cast iron, na ihe mejupụtara kemịkal ya gosipụtara na tebụl 1.
Tebụl 1 Ngwakọta kemịkalụ w (%) nke chromium-molybdenum alloy cast iron

Ọdịdị metallographic nke chromium-molybdenum alloy cast iron camshaft tupu kpo oku bụ ụdị B graphite + ọmarịcha pearlite + mesh carbide.
A na-edobe oghere cam n’ime ọkụ ọkụ induction na steeti nke nkedo. The teknuzu chọrọ maka quenching bụ elu hardness nke 50-60HRC , peach n’ọnụ obi tara mmiri oyi akwa omimi nke 4.6mm-10.0mm , na isi okirikiri obi tara mmiri oyi akwa omimi nke 1.5mm-8.0mm .
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