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冷芯盒的芯盒设计

发布时间:2020-01-11
冷芯盒的芯盒设计Design of core box for cold core box1 简单的芯盒1 simple core box根据需要该射嘴可能很大也可能很小。射嘴尽可能大 ,以便在最小的射压下也能将足够多的The nozzle may be large or small. The nozzle can be as large as possible so that it can be enough at the lowest ejection pressure.芯砂射入芯盒 ,大射嘴的其他优点如下: ①延长芯盒的使用寿命(低磨损) ; ②减少芯盒的清理费用; ③减少射嘴下端粘结剂的堆积; ④改善、加快催化剂的渗透(面积大) ; ⑤减少催化剂的用量。Core sand into the core box, the other advantages of the large ejection nozzle are as follows: (1) prolonging the service life of the core box (low wear); (2) reducing the cleaning cost of the core box; 3. Reducing the accumulation of binder at the bottom of the nozzle; (4) improving and accelerating the penetration of the catalyst (large area); and 5 reducing the amount of catalyst.2 较复杂的大芯盒2 more complex large core boxes尺寸:长500 mm ,高300 mm ,宽 400 mm ,芯子重量 20 kg。图中带有射嘴的芯子 ,特征是芯盒的上部由于芯子的高度而使用大量的排气塞。基本原理是每一芯盒的充填都是从上往下的 ,即芯盒中的气体是顺着砂子的堆积方向流动 ,必须由顶部的排气塞中排出,这是芯盒上部排气塞较多的原因。然而 ,采用冷芯盒法必须考虑气态催化剂在芯砂中的Size: length 500 mm, height 300 mm, width 400 mm, core weight 20 kg. The core with a nozzle is characterized by a large number of exhaust plugs on the upper part of the core box due to the height of the core. The basic principle is that the filling of each box is from top to bottom, that is, the gas in the core box flows along the sand''s accumulation direction, and must be discharged from the exhaust plug at the top, which is the reason for the more exhaust plug on the top of the core box. However, the cold core box method must consider the gaseous catalyst in the core sand.渗透量,这意味着如果芯盒上部的排气塞较多 ,催化剂会从排气塞中溢出,在芯子的底部可能会产生不硬化的现象。针对这一原因 ,对每一个芯子必须综合考虑砂芯上部的紧实度和催化剂的用量。因此 ,进气口的排列是使砂芯快速硬化 ,冷芯盒法最大的优点是在较短的时间内能制造大量的砂芯。This means that if the exhaust plug on the upper part of the core box is more, the catalyst will overflow from the exhaust plug, and there may be no hardening phenomenon at the bottom of the core. For this reason, every core must consider the compactness of the upper part of the sand core and the dosage of the catalyst. Therefore, the arrangement of air intake is to rapidly harden sand cores. The biggest advantage of cold box method is that a lot of sand cores can be produced in a short time.
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