落砂,是当前我国铸造生产中的薄弱环节之一.大多数铸工车间仍沿用大锤落砂的笨重方法,而使用落砂机的尚属少数。在已实现落砂工序机械化的单位,多半采用青岛铸造机械厂制造的ИР-12型落砂机。据了解,这种机械在使用上还存在一些问题,例如许多使用单位由于将浇注后的砂箱直接压 Falling sand is one of the weakest links in China’s current casting production. Most of the foundry workshops still use the heavy method of sledgehammer falling sand, and the use of sand-falling machines is still a minority. In the units that have achieved mechanization of the sand falling process, most of them use the И Р-12 sand-falling machine manufactured by Qingdao Foundry Machinery Plant. It is understood that there are still some problems in the use of this type of machine, for example, many use units press directly after pouring the sand box.