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目前,模具钢具有附加值高、市场需求广泛等优点。但是中国模具钢的生产已经严重落后于世界先进水平。国内某厂现有模具钢的生产锭型存在全凝时间长、探伤不合格、成材率低的问题。通过铸造模拟分析,优化后的锭型,铸锭全凝时间缩短0.48h,本体凝固时间缩短0.41h,钢锭本体无缩孔,精轧后超声波探伤B级合格,试验生产成材率到达83.51%,比原指标提高了5.31%。
At present, the mold steel with high added value, market demand and other advantages. However, the production of China’s die steel has seriously lagged behind the world advanced level. The existing domestic production of a mold steel ingot production there is the whole condensate for a long time, unqualified test, the problem of low yield rate. Through casting simulation analysis and optimized ingot, the total solidification time of the ingot was shortened by 0.48h, the solidification time of the ingot was shortened by 0.41h, the ingot body had no shrinkage cavity, the grade B of the ultrasonic flaw detection after the finish rolling passed the test, the yield reached 83.51% 5.31% higher than the original indicator.