flaw in casting meaning in English

铸造缺陷

The influence of technological factors on the quality of dissolved mold casting of aluminium alloy was discussed , the connection between the process parameters and the flaw in casting was analyzed
摘要讨论了各工艺因素对消失模铝合金铸造质量的影响，分析了各工艺参数与铸造缺陷之间的关系。
The results show that the heat preservation coating and its proper thickness are favorable to the enhancement of filling mold speed of aluminium alloy ; the higher the pouring temperature is and the larger the ratio of hollow areas of vertical pouring is , the faster the speed of filling mold of aluminium alloy is ; if the mold is too thick or too thin , it may decrease the speed of filling mold ; the proper length and the area of vertical pouring are favorable to the enhancement of the speed of filling mold ; although negatire - pressure may improve filling the speed , too high negatire - pressure may enlarge the flaw in casting
结果表明：保温涂料及一定的涂层厚度有利于提高铝液的充型速度；浇注温度越高、直浇道空心面积率越大，铝液充型速度越快；模样厚度太厚或太薄，均会使铝液充型速度降低；一定的直浇道长度及直浇道面积有利于提高铝液的充型速度；施加负压会使铝液的充型速度大大提高，但负压过大会增大铸造缺陷。