防止铸钢缩孔的方法1. 藉冒口转位来防止缩孔——这种方法是将浇口与冒口的位置按位置在铸件的一端,(如图6),浇铸前砂型距浇口较远的一端支起约20°左右(角度的大小应视铸件的长短而定;铸件长,角度要小;铸件短,角度要大),使最先浇入的钢水被后浇入的钢水推剂到顶端,因钢水流经的距离长,接触冷型壁的时间较久,所以温度先降低,而后浇入的钢水流经 To prevent the shrinkage of cast steel 1. Risking bit to prevent biting - This method is the position of the gate and riser by location at one end of the casting, (Figure 6), before casting sand from the pouring The longer end of the mouth support about 20 ° (the size of the angle should be determined depending on the length of the casting; casting long, the angle is small; castings short, the angle should be large), so that the first poured into the molten steel after being poured Steel push to the top, because the molten steel through the long distance, contact with the cold wall for a long time, so the temperature first reduced, and then pouring molten steel through