Ends respectively with the active to transfer motion and force the rod member and a driven member hinge in the link mechanism. For example, in the reciprocating piston power machinery and compressor rod to connect the piston and crank. Mostly steel rod, the Sintered Bronze Bushing cross-section of the main part of round or I shaped, both ends of the hole, the hole fitted with bronze bushings or needle bearings for the load of axle pin hinge. The connecting rod is of the important parts of the engine such as automobile and ship, and it is connected with the piston and the crankshaft, its role is the reciprocation of the piston is converted to rotational movement of the crankshaft, and the force acting on the piston to Bronze Bar the crankshaft in order to output power.
Link in the work, in addition to withstand the pressure generated by the combustion chamber gas, but also to withstand the longitudinal and transverse inertia force. Thus, the rod work in a complex stress state. It by alternating tension Cast Bronze Sleeve and compression stress and bending stress. Link major damage in the form of a fatigue fracture and excessive deformation. Usually fatigue fracture site of the three areas of high stress on the connecting rod. The link operating conditions that require a link having a higher strength and fatigue resistance; also requested to have enough resistance and toughness of steel. Traditional the link processing technology in its material commonly used 45 steel, the 40Cr or 40MnB quenched and tempered steel, but is now widely used in the foreign advanced processing of the connecting rod cracking (conrodfracturesplitting), the technical requirements of their brittleness, higher hardness, therefore, German auto companies to produce a new type of the link material such as C70S6 high carbon microalloying non-quenched and tempered steel the, SPLITASCO Forged, FRACTIM forged steel and S53CV-FS forged steel (all Germany din standard). Alloy steel has high strength, but are very sensitive to stress concentration. So, in terms of connecting rod shape, excessive fillet need strict requirements should also be noted that the surface quality in order to improve the fatigue strength, or the application of high-strength alloy steel and can not achieve the desired fruit.
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