Technical Study On Improving The Front Cover Casting Quality Of K5X Engine

The front cover is the left crankcase cover of the engine, and its intrinsic quality has great influence on the overall performance of the engine. The structure of motorcycle engine crankcase cover can prevent oil leakage, reduce crankshaft running out and engine noise. It improves the overall performance of the engine. The die casting process and operating procedures of the front cover directly affect the quality of the casting. Therefore, the key points are improving the passing rate of die-casting, optimizing Die-casting process and operating proceduresThe following research of the paper is about improving the casting level of front cover of loncin K5 X engine:1. Casting system design optimization. In order to improve the passing rate of die-casting, we must change the casting system to solve the running water of the mold casting which improves fullness, gas porosity, shrinkage and other defects caused by mold casting.2. Adjusting the ratio of raw material ADC12 alloy. Changing the ratio of Si, Fe, Cu can improve the hardness of the front cover which can improve the the passing rate of die-casting.3. Changing the casting operating process to improve the the passing rate of die-casting. The higher aluminum water temperature leads is good for the purity of aluminum water. And more time for the confectioning separate of the front cover can reduce gas porosity, shrinkage and other casting defects which can improve the passing rate of die-casting.The paper researches the die-casting process and operating procedures which affect the passing rate of die-casting. The paper summarizes a series of technical measures of improving the passing rate of die-casting which provides a reference research for the quality improvement of the similar products.