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Typical Application
A crankshaft is made of carbon structural steel or nodular cast iron; it is the critical rotating part of the engine. When mounted with connecting rod,piston converts linear reciprocating motion into rotating motion. At present, the maximum revolving speed of automotive engine we are familiar with can reach 6000r/min above, which places more strict requirements on process technique including location consistency, circularity, and straightness of hole-centre of a different crankshaft, surface roughness, etc
The cylinder head is one of the key components of aengine, with cova er mounting surface as the top surface, lower surface mating with upper surface on the cylinder body, exhaust pipe joint surface at two sides, front shroud in the front, transmission at the rear, respectively. All six surfaces are mating surface, requiring accurate dimension, perpendicularity with each other, good flatness and lower surface roughness.