| Crankshaft is one of the key parts of the engine, under the outbreak pressure of gas, the inertia force and moment of inertia in the course of the engine at high speed. the force is large and very complicated.withstand the impact of alternating load, alternating load is so easy to cause crankshaft bending, torsion stress concentration, resulting in fatigue cracks, fatigue cracks were seen in the crankshaft fillet, eventually leading to rupture occurred in the crankshaft fillet. Therefore, crankshaft requires the use of enhanced technology to strengthen the fillets in machining process.the most commonly used induction hardening, plasma nitriding, gas soft nitriding, rolling strengthen and so on, Fillet rolling technology is One of the main methods to strengthen, it has significantly enhanced the effect, high efficiency, low cost, low pollution and low energy consumption, and gradually become the mainstream method of strengthening the engine crankshaft. The proportional of fillet rolling process to strengthen engine crankshaf in domestic and foreignt increase year by year, has now reached to more than80%.TR engine crankshaft production company is a professional factory, fillet rolling process are currently used in a variety to reinforced crankshaft, but in the application process,there are many quality problems affecting the crankshaft to use.For example, Protruding of rounded edges of fillet lead engine crankshaft beating,Crankshaft jumping overproof,even the crankshaft fatigue due to poor fillet rolling. Aiming at strengthening crankshaft fillet rolling applications process prone to quality issues analysis system, combined with total quality management and other advanced quality management methods, Further research the quality controled method of crankshaft rolling process to strengthen, and standardization through them and eventually formed a company for TR company rolling process quality control specifications and quality inspection standards, to ensure the stability of the crankshaft rolling enhanced the quality and reduce the risk of fracture of the crankshaft. |
