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1．绪言铸件中由于金属液的充填状态不合适而产生缺陷如冷隔、浇不到等颇不少见,尤其在一箱多铸时,由于铸件布置位置不同而产生缺陷数量亦不同的情况已为实践所证实。现以铸钢一箱浇18件为例,在所确定的浇注方案中,离直浇口位置最远的铸件,常产生浇不到、气孔等缺陷。开始从缺陷的状态和它的位置分析认为是金属液充填不充分所致,于是设计出能够较多地供给金属液的浇道,但未见效果。对此,由研究金属液的充填状态入手,概略地算出能够改善不均匀状态等的浇注系统的尺寸,进一步以水、钢水证实它的流出状态,然后作出浇注系统方案并加以实施。
1. Introduction In the casting due to improper filling of liquid metal and produce defects such as cold, pour less than quite a lot of see, especially in a box of more cast, due to the castings of different locations and the number of defects are also different Confirmed. Casting is cast in a box of 18 cases, for example, in the determined casting program, the casting from the sprue the furthest position often produce less than pouring, porosity and other defects. Initially, the state of the defect and the analysis of its position were considered to be caused by inadequate filling of the molten metal. Thus, a runner in which a large amount of molten metal was supplied was designed but no effect was observed. In view of this, starting with the investigation of the filling state of the molten metal, the dimensions of the casting system capable of improving the unevenness and the like are roughly calculated, the flowing state of the casting system is further verified with water and molten steel, and the pouring system scheme is made and implemented.