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铸型的紧实度决定了铸件的精度和表面质量。为了获得沿铸型高度 H 稳定的紧实度 V,探讨了在附加压块下震击紧实型砂的方法。这种方法的特点是型腔上、下的型砂同时受到变形、故又被称为双面惯性紧实法。这种带有附加冲击压实的方法,使砂箱内型砂的紧实度获得重新分布。工作时,工作台带着模板,下辅助柜、砂箱和型砂上备50—80毫米、然后下降,并在行程终点,与机座打击。在打击的瞬间,型砂、辅助柜、砂箱和压块由惯性向下运动的状态,因工作台的弹性回跳,改变运动方向、使型砂在某个时间内受到各方面的压实。
The compaction of the mold determines the accuracy and surface quality of the casting. In order to obtain a stable solidity V along the height of the mold H, a method of shocking the compact sand under additional briquetting was discussed. This method is characterized by cavities, under the sand by deformation at the same time, it is also known as double-sided inertia tightening method. This method of additional impact compaction redistributes the compaction of the sand in the flask. Work, the workbench with the template, under the auxiliary cabinets, sand boxes and sand preparation 50-80 mm, and then drop, and at the end of the trip, hit with the base. In the moment of attack, the sand, auxiliary cabinet, sand box and briquetting block move downwards from the inertia state. Due to the elastic bounce of the table, the direction of the movement is changed so that the molding sand is compacted in all aspects at certain time.