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弹簧壳体零件壁厚较大且不均匀,铸件多孔位,分布密集,给压铸生产带来了很大的困难。为生产出合格的铸件,将速度比降至10.4,并结合型芯表面涂层技术,解决型芯冲蚀和粘模的问题;通过提高浇注温度、增大溢流槽,增设辅助流道等措施解决了浇注不良的问题;通过延长冷却时间,解决了铸件脱模开裂的问题。通过工艺改进,最终生产出了合格的压铸件,产品不良率小于0.5%。
Spring shell parts larger and uneven wall thickness, porous castings, densely distributed, to die-casting production has brought great difficulties. In order to produce qualified castings, the speed ratio will be reduced to 10.4, combined with the core surface coating technology to solve the core erosion and sticky mold problems; by increasing the pouring temperature, increase the overflow tank, additional auxiliary runner Measures to solve the problem of poor pouring; by extending the cooling time to solve the casting mold release cracking problems. Through the process improvement, the final production of qualified die-casting, product defect rate of less than 0.5%.